Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * PSA crypto layer on top of Mbed TLS crypto |
| 3 | */ |
Bence Szépkúti | 8697465 | 2020-06-15 11:59:37 +0200 | [diff] [blame] | 4 | /* |
Bence Szépkúti | 1e14827 | 2020-08-07 13:07:28 +0200 | [diff] [blame] | 5 | * Copyright The Mbed TLS Contributors |
Dave Rodgman | 16799db | 2023-11-02 19:47:20 +0000 | [diff] [blame] | 6 | * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7 | */ |
| 8 | |
Gilles Peskine | db09ef6 | 2020-06-03 01:43:33 +0200 | [diff] [blame] | 9 | #include "common.h" |
Ronald Cron | afbc7ed | 2023-01-24 16:02:04 +0100 | [diff] [blame] | 10 | #include "psa_crypto_core_common.h" |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 11 | |
| 12 | #if defined(MBEDTLS_PSA_CRYPTO_C) |
mohammad1603 | 2701005 | 2018-07-03 13:16:15 +0300 | [diff] [blame] | 13 | |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 14 | #if defined(MBEDTLS_PSA_CRYPTO_CONFIG) |
| 15 | #include "check_crypto_config.h" |
| 16 | #endif |
| 17 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 18 | #include "psa/crypto.h" |
Przemyslaw Stekiel | 705fb0f | 2021-11-24 08:47:29 +0100 | [diff] [blame] | 19 | #include "psa/crypto_values.h" |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 20 | |
Ronald Cron | d6d2888 | 2020-12-14 14:56:02 +0100 | [diff] [blame] | 21 | #include "psa_crypto_cipher.h" |
Gilles Peskine | 039b90c | 2018-12-07 18:24:41 +0100 | [diff] [blame] | 22 | #include "psa_crypto_core.h" |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 23 | #include "psa_crypto_invasive.h" |
Xiaokang Qian | e9c39c4 | 2023-08-09 08:50:19 +0000 | [diff] [blame] | 24 | #include "psa_crypto_driver_wrappers.h" |
Xiaokang Qian | fe9666b | 2023-09-11 10:36:20 +0000 | [diff] [blame] | 25 | #include "psa_crypto_driver_wrappers_no_static.h" |
Ronald Cron | 00b7bfc | 2020-11-25 15:25:26 +0100 | [diff] [blame] | 26 | #include "psa_crypto_ecp.h" |
Przemek Stekiel | 359f462 | 2022-12-05 14:11:55 +0100 | [diff] [blame] | 27 | #include "psa_crypto_ffdh.h" |
Steven Cooreman | 5f88e77 | 2021-03-15 11:07:12 +0100 | [diff] [blame] | 28 | #include "psa_crypto_hash.h" |
Steven Cooreman | 82c66b6 | 2021-03-19 17:39:17 +0100 | [diff] [blame] | 29 | #include "psa_crypto_mac.h" |
Ronald Cron | 00b7bfc | 2020-11-25 15:25:26 +0100 | [diff] [blame] | 30 | #include "psa_crypto_rsa.h" |
Ronald Cron | 7023db5 | 2020-11-20 18:17:42 +0100 | [diff] [blame] | 31 | #include "psa_crypto_ecp.h" |
Gilles Peskine | a8ade16 | 2019-06-26 11:24:49 +0200 | [diff] [blame] | 32 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | d089021 | 2019-06-24 14:34:43 +0200 | [diff] [blame] | 33 | #include "psa_crypto_se.h" |
Gilles Peskine | a8ade16 | 2019-06-26 11:24:49 +0200 | [diff] [blame] | 34 | #endif |
Gilles Peskine | 961849f | 2018-11-30 18:54:54 +0100 | [diff] [blame] | 35 | #include "psa_crypto_slot_management.h" |
Darryl Green | d49a499 | 2018-06-18 17:27:26 +0100 | [diff] [blame] | 36 | /* Include internal declarations that are useful for implementing persistently |
| 37 | * stored keys. */ |
| 38 | #include "psa_crypto_storage.h" |
| 39 | |
Gilles Peskine | b2b64d3 | 2020-12-14 16:43:58 +0100 | [diff] [blame] | 40 | #include "psa_crypto_random_impl.h" |
Gilles Peskine | 90edc99 | 2020-11-13 15:39:19 +0100 | [diff] [blame] | 41 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 42 | #include <stdlib.h> |
| 43 | #include <string.h> |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 44 | #include "mbedtls/platform.h" |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 45 | |
Gilles Peskine | 1c49f1a | 2020-11-13 18:46:25 +0100 | [diff] [blame] | 46 | #include "mbedtls/aes.h" |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 47 | #include "mbedtls/asn1.h" |
Jaeden Amero | 25384a2 | 2019-01-10 10:23:21 +0000 | [diff] [blame] | 48 | #include "mbedtls/asn1write.h" |
Gilles Peskine | a81d85b | 2018-06-26 16:10:23 +0200 | [diff] [blame] | 49 | #include "mbedtls/bignum.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 50 | #include "mbedtls/camellia.h" |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 51 | #include "mbedtls/chacha20.h" |
| 52 | #include "mbedtls/chachapoly.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 53 | #include "mbedtls/cipher.h" |
| 54 | #include "mbedtls/ccm.h" |
| 55 | #include "mbedtls/cmac.h" |
Dave Rodgman | 7870115 | 2023-08-29 14:20:18 +0100 | [diff] [blame] | 56 | #include "mbedtls/constant_time.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 57 | #include "mbedtls/des.h" |
Gilles Peskine | b7ecdf0 | 2018-09-18 12:11:27 +0200 | [diff] [blame] | 58 | #include "mbedtls/ecdh.h" |
Gilles Peskine | 969ac72 | 2018-01-28 18:16:59 +0100 | [diff] [blame] | 59 | #include "mbedtls/ecp.h" |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 60 | #include "mbedtls/entropy.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 61 | #include "mbedtls/error.h" |
| 62 | #include "mbedtls/gcm.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 63 | #include "mbedtls/md5.h" |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 64 | #include "mbedtls/pk.h" |
Chris Jones | daacb59 | 2021-03-09 17:03:29 +0000 | [diff] [blame] | 65 | #include "pk_wrap.h" |
Gilles Peskine | 3f10812 | 2018-12-07 18:14:53 +0100 | [diff] [blame] | 66 | #include "mbedtls/platform_util.h" |
Janos Follath | 24eed8d | 2019-11-22 13:21:35 +0000 | [diff] [blame] | 67 | #include "mbedtls/error.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 68 | #include "mbedtls/ripemd160.h" |
Gilles Peskine | 969ac72 | 2018-01-28 18:16:59 +0100 | [diff] [blame] | 69 | #include "mbedtls/rsa.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 70 | #include "mbedtls/sha1.h" |
| 71 | #include "mbedtls/sha256.h" |
| 72 | #include "mbedtls/sha512.h" |
Valerio Setti | 384fbde | 2024-01-02 13:26:40 +0100 | [diff] [blame] | 73 | #include "mbedtls/psa_util.h" |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 74 | #include "mbedtls/threading.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 75 | |
Przemek Stekiel | 75fe3fb | 2022-06-09 14:44:55 +0200 | [diff] [blame] | 76 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF) || \ |
| 77 | defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) || \ |
| 78 | defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 79 | #define BUILTIN_ALG_ANY_HKDF 1 |
Przemek Stekiel | 75fe3fb | 2022-06-09 14:44:55 +0200 | [diff] [blame] | 80 | #endif |
| 81 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 82 | /****************************************************************/ |
| 83 | /* Global data, support functions and library management */ |
| 84 | /****************************************************************/ |
| 85 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 86 | static int key_type_is_raw_bytes(psa_key_type_t type) |
Gilles Peskine | 48c0ea1 | 2018-06-21 14:15:31 +0200 | [diff] [blame] | 87 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 88 | return PSA_KEY_TYPE_IS_UNSTRUCTURED(type); |
Gilles Peskine | 48c0ea1 | 2018-06-21 14:15:31 +0200 | [diff] [blame] | 89 | } |
| 90 | |
Gilles Peskine | 5a3c50e | 2018-12-04 12:27:09 +0100 | [diff] [blame] | 91 | /* Values for psa_global_data_t::rng_state */ |
| 92 | #define RNG_NOT_INITIALIZED 0 |
| 93 | #define RNG_INITIALIZED 1 |
| 94 | #define RNG_SEEDED 2 |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 95 | |
Paul Elliott | 0db6a90 | 2024-03-15 13:48:20 +0000 | [diff] [blame] | 96 | /* IDs for PSA crypto subsystems. Starts at 1 to catch potential uninitialized |
| 97 | * variables as arguments. */ |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 98 | typedef enum { |
Paul Elliott | 0db6a90 | 2024-03-15 13:48:20 +0000 | [diff] [blame] | 99 | PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS = 1, |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 100 | PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS, |
| 101 | PSA_CRYPTO_SUBSYSTEM_RNG, |
| 102 | PSA_CRYPTO_SUBSYSTEM_TRANSACTION, |
| 103 | } mbedtls_psa_crypto_subsystem; |
| 104 | |
Paul Elliott | b24e36d | 2024-03-15 16:25:48 +0000 | [diff] [blame] | 105 | /* Initialization flags for global_data::initialized */ |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 106 | #define PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED 0x01 |
| 107 | #define PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS_INITIALIZED 0x02 |
| 108 | #define PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED 0x04 |
| 109 | |
| 110 | #define PSA_CRYPTO_SUBSYSTEM_ALL_INITIALISED ( \ |
| 111 | PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED | \ |
| 112 | PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS_INITIALIZED | \ |
| 113 | PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED) |
| 114 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 115 | typedef struct { |
Dave Rodgman | 864f594 | 2023-08-16 18:04:44 +0100 | [diff] [blame] | 116 | uint8_t initialized; |
| 117 | uint8_t rng_state; |
Gilles Peskine | 2d8a182 | 2021-11-08 22:20:03 +0100 | [diff] [blame] | 118 | mbedtls_psa_random_context_t rng; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 119 | } psa_global_data_t; |
| 120 | |
| 121 | static psa_global_data_t global_data; |
| 122 | |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 123 | static uint8_t psa_get_initialized(void) |
| 124 | { |
| 125 | uint8_t initialized; |
| 126 | |
| 127 | #if defined(MBEDTLS_THREADING_C) |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 128 | mbedtls_mutex_lock(&mbedtls_threading_psa_rngdata_mutex); |
| 129 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 130 | |
| 131 | initialized = global_data.rng_state == RNG_SEEDED; |
| 132 | |
| 133 | #if defined(MBEDTLS_THREADING_C) |
| 134 | mbedtls_mutex_unlock(&mbedtls_threading_psa_rngdata_mutex); |
| 135 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 136 | |
| 137 | #if defined(MBEDTLS_THREADING_C) |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 138 | mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex); |
| 139 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 140 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 141 | initialized = |
| 142 | (initialized && (global_data.initialized == PSA_CRYPTO_SUBSYSTEM_ALL_INITIALISED)); |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 143 | |
| 144 | #if defined(MBEDTLS_THREADING_C) |
| 145 | mbedtls_mutex_unlock(&mbedtls_threading_psa_globaldata_mutex); |
| 146 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 147 | |
| 148 | return initialized; |
| 149 | } |
| 150 | |
Paul Elliott | 3581652 | 2024-02-23 17:47:42 +0000 | [diff] [blame] | 151 | static uint8_t psa_get_drivers_initialized(void) |
| 152 | { |
| 153 | uint8_t initialized; |
| 154 | |
| 155 | #if defined(MBEDTLS_THREADING_C) |
| 156 | mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex); |
| 157 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 158 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 159 | initialized = (global_data.initialized & PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED) != 0; |
Paul Elliott | 3581652 | 2024-02-23 17:47:42 +0000 | [diff] [blame] | 160 | |
| 161 | #if defined(MBEDTLS_THREADING_C) |
| 162 | mbedtls_mutex_unlock(&mbedtls_threading_psa_globaldata_mutex); |
| 163 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 164 | |
| 165 | return initialized; |
| 166 | } |
| 167 | |
itayzafrir | 0adf0fc | 2018-09-06 16:24:41 +0300 | [diff] [blame] | 168 | #define GUARD_MODULE_INITIALIZED \ |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 169 | if (psa_get_initialized() == 0) \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 170 | return PSA_ERROR_BAD_STATE; |
itayzafrir | 0adf0fc | 2018-09-06 16:24:41 +0300 | [diff] [blame] | 171 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 172 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 173 | |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 174 | /* Declare a local copy of an input buffer and a variable that will be used |
| 175 | * to store a pointer to the start of the buffer. |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 176 | * |
| 177 | * Note: This macro must be called before any operations which may jump to |
| 178 | * the exit label, so that the local input copy object is safe to be freed. |
| 179 | * |
| 180 | * Assumptions: |
| 181 | * - input is the name of a pointer to the buffer to be copied |
| 182 | * - The name LOCAL_INPUT_COPY_OF_input is unused in the current scope |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 183 | * - input_copy_name is a name that is unused in the current scope |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 184 | */ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 185 | #define LOCAL_INPUT_DECLARE(input, input_copy_name) \ |
| 186 | psa_crypto_local_input_t LOCAL_INPUT_COPY_OF_##input = PSA_CRYPTO_LOCAL_INPUT_INIT; \ |
| 187 | const uint8_t *input_copy_name = NULL; |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 188 | |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 189 | /* Allocate a copy of the buffer input and set the pointer input_copy to |
| 190 | * point to the start of the copy. |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 191 | * |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 192 | * Assumptions: |
| 193 | * - psa_status_t status exists |
| 194 | * - An exit label is declared |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 195 | * - input is the name of a pointer to the buffer to be copied |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 196 | * - LOCAL_INPUT_DECLARE(input, input_copy) has previously been called |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 197 | */ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 198 | #define LOCAL_INPUT_ALLOC(input, length, input_copy) \ |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 199 | status = psa_crypto_local_input_alloc(input, length, \ |
| 200 | &LOCAL_INPUT_COPY_OF_##input); \ |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 201 | if (status != PSA_SUCCESS) { \ |
| 202 | goto exit; \ |
| 203 | } \ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 204 | input_copy = LOCAL_INPUT_COPY_OF_##input.buffer; |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 205 | |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 206 | /* Free the local input copy allocated previously by LOCAL_INPUT_ALLOC() |
| 207 | * |
David Horstmann | 3e72db4 | 2023-12-08 14:08:18 +0000 | [diff] [blame] | 208 | * Assumptions: |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 209 | * - input_copy is the name of the input copy pointer set by LOCAL_INPUT_ALLOC() |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 210 | * - input is the name of the original buffer that was copied |
David Horstmann | 3e72db4 | 2023-12-08 14:08:18 +0000 | [diff] [blame] | 211 | */ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 212 | #define LOCAL_INPUT_FREE(input, input_copy) \ |
| 213 | input_copy = NULL; \ |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 214 | psa_crypto_local_input_free(&LOCAL_INPUT_COPY_OF_##input); |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 215 | |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 216 | /* Declare a local copy of an output buffer and a variable that will be used |
| 217 | * to store a pointer to the start of the buffer. |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 218 | * |
| 219 | * Note: This macro must be called before any operations which may jump to |
| 220 | * the exit label, so that the local output copy object is safe to be freed. |
| 221 | * |
| 222 | * Assumptions: |
| 223 | * - output is the name of a pointer to the buffer to be copied |
| 224 | * - The name LOCAL_OUTPUT_COPY_OF_output is unused in the current scope |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 225 | * - output_copy_name is a name that is unused in the current scope |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 226 | */ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 227 | #define LOCAL_OUTPUT_DECLARE(output, output_copy_name) \ |
| 228 | psa_crypto_local_output_t LOCAL_OUTPUT_COPY_OF_##output = PSA_CRYPTO_LOCAL_OUTPUT_INIT; \ |
| 229 | uint8_t *output_copy_name = NULL; |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 230 | |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 231 | /* Allocate a copy of the buffer output and set the pointer output_copy to |
| 232 | * point to the start of the copy. |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 233 | * |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 234 | * Assumptions: |
| 235 | * - psa_status_t status exists |
| 236 | * - An exit label is declared |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 237 | * - output is the name of a pointer to the buffer to be copied |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 238 | * - LOCAL_OUTPUT_DECLARE(output, output_copy) has previously been called |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 239 | */ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 240 | #define LOCAL_OUTPUT_ALLOC(output, length, output_copy) \ |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 241 | status = psa_crypto_local_output_alloc(output, length, \ |
| 242 | &LOCAL_OUTPUT_COPY_OF_##output); \ |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 243 | if (status != PSA_SUCCESS) { \ |
| 244 | goto exit; \ |
| 245 | } \ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 246 | output_copy = LOCAL_OUTPUT_COPY_OF_##output.buffer; |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 247 | |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 248 | /* Free the local output copy allocated previously by LOCAL_OUTPUT_ALLOC() |
David Horstmann | 3e72db4 | 2023-12-08 14:08:18 +0000 | [diff] [blame] | 249 | * after first copying back its contents to the original buffer. |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 250 | * |
David Horstmann | 3e72db4 | 2023-12-08 14:08:18 +0000 | [diff] [blame] | 251 | * Assumptions: |
David Horstmann | 3e72db4 | 2023-12-08 14:08:18 +0000 | [diff] [blame] | 252 | * - psa_status_t status exists |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 253 | * - output_copy is the name of the output copy pointer set by LOCAL_OUTPUT_ALLOC() |
| 254 | * - output is the name of the original buffer that was copied |
David Horstmann | 3e72db4 | 2023-12-08 14:08:18 +0000 | [diff] [blame] | 255 | */ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 256 | #define LOCAL_OUTPUT_FREE(output, output_copy) \ |
| 257 | output_copy = NULL; \ |
David Horstmann | 5a945f5 | 2023-12-13 14:09:08 +0000 | [diff] [blame] | 258 | do { \ |
| 259 | psa_status_t local_output_status; \ |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 260 | local_output_status = psa_crypto_local_output_free(&LOCAL_OUTPUT_COPY_OF_##output); \ |
David Horstmann | 5a945f5 | 2023-12-13 14:09:08 +0000 | [diff] [blame] | 261 | if (local_output_status != PSA_SUCCESS) { \ |
| 262 | /* Since this error case is an internal error, it's more serious than \ |
| 263 | * any existing error code and so it's fine to overwrite the existing \ |
| 264 | * status. */ \ |
| 265 | status = local_output_status; \ |
| 266 | } \ |
| 267 | } while (0) |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 268 | #else /* !MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS */ |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 269 | #define LOCAL_INPUT_DECLARE(input, input_copy_name) \ |
| 270 | const uint8_t *input_copy_name = NULL; |
| 271 | #define LOCAL_INPUT_ALLOC(input, length, input_copy) \ |
| 272 | input_copy = input; |
| 273 | #define LOCAL_INPUT_FREE(input, input_copy) \ |
| 274 | input_copy = NULL; |
| 275 | #define LOCAL_OUTPUT_DECLARE(output, output_copy_name) \ |
| 276 | uint8_t *output_copy_name = NULL; |
| 277 | #define LOCAL_OUTPUT_ALLOC(output, length, output_copy) \ |
| 278 | output_copy = output; |
| 279 | #define LOCAL_OUTPUT_FREE(output, output_copy) \ |
| 280 | output_copy = NULL; |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 281 | #endif /* !MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS */ |
David Horstmann | e9a88ab | 2023-11-29 17:07:13 +0000 | [diff] [blame] | 282 | |
| 283 | |
Manuel Pégourié-Gonnard | 7abdf7e | 2023-03-09 11:17:43 +0100 | [diff] [blame] | 284 | int psa_can_do_hash(psa_algorithm_t hash_alg) |
| 285 | { |
| 286 | (void) hash_alg; |
Paul Elliott | 3581652 | 2024-02-23 17:47:42 +0000 | [diff] [blame] | 287 | return psa_get_drivers_initialized(); |
Manuel Pégourié-Gonnard | 7abdf7e | 2023-03-09 11:17:43 +0100 | [diff] [blame] | 288 | } |
Valerio Setti | c6f004f | 2023-12-12 11:27:36 +0100 | [diff] [blame] | 289 | |
Valerio Setti | 1fff4f2 | 2023-12-28 14:19:34 +0100 | [diff] [blame] | 290 | int psa_can_do_cipher(psa_key_type_t key_type, psa_algorithm_t cipher_alg) |
Valerio Setti | c6f004f | 2023-12-12 11:27:36 +0100 | [diff] [blame] | 291 | { |
Valerio Setti | 1fff4f2 | 2023-12-28 14:19:34 +0100 | [diff] [blame] | 292 | (void) key_type; |
Valerio Setti | c6f004f | 2023-12-12 11:27:36 +0100 | [diff] [blame] | 293 | (void) cipher_alg; |
Paul Elliott | 3581652 | 2024-02-23 17:47:42 +0000 | [diff] [blame] | 294 | return psa_get_drivers_initialized(); |
Valerio Setti | c6f004f | 2023-12-12 11:27:36 +0100 | [diff] [blame] | 295 | } |
| 296 | |
| 297 | |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 298 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT) || \ |
Przemek Stekiel | 5341050 | 2023-04-28 13:18:43 +0200 | [diff] [blame] | 299 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) || \ |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 300 | defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE) |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 301 | static int psa_is_dh_key_size_valid(size_t bits) |
| 302 | { |
Valerio Setti | 504a102 | 2024-01-17 15:19:30 +0100 | [diff] [blame] | 303 | switch (bits) { |
| 304 | #if defined(PSA_WANT_DH_RFC7919_2048) |
| 305 | case 2048: |
| 306 | return 1; |
| 307 | #endif /* PSA_WANT_DH_RFC7919_2048 */ |
| 308 | #if defined(PSA_WANT_DH_RFC7919_3072) |
| 309 | case 3072: |
| 310 | return 1; |
| 311 | #endif /* PSA_WANT_DH_RFC7919_3072 */ |
| 312 | #if defined(PSA_WANT_DH_RFC7919_4096) |
| 313 | case 4096: |
| 314 | return 1; |
| 315 | #endif /* PSA_WANT_DH_RFC7919_4096 */ |
| 316 | #if defined(PSA_WANT_DH_RFC7919_6144) |
| 317 | case 6144: |
| 318 | return 1; |
| 319 | #endif /* PSA_WANT_DH_RFC7919_6144 */ |
| 320 | #if defined(PSA_WANT_DH_RFC7919_8192) |
| 321 | case 8192: |
| 322 | return 1; |
| 323 | #endif /* PSA_WANT_DH_RFC7919_8192 */ |
| 324 | default: |
| 325 | return 0; |
Przemek Stekiel | d1cf1ba | 2023-04-27 12:04:21 +0200 | [diff] [blame] | 326 | } |
Przemek Stekiel | d1cf1ba | 2023-04-27 12:04:21 +0200 | [diff] [blame] | 327 | } |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 328 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT || |
Przemek Stekiel | 5341050 | 2023-04-28 13:18:43 +0200 | [diff] [blame] | 329 | MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY || |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 330 | PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE */ |
Manuel Pégourié-Gonnard | 7abdf7e | 2023-03-09 11:17:43 +0100 | [diff] [blame] | 331 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 332 | psa_status_t mbedtls_to_psa_error(int ret) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 333 | { |
Gilles Peskine | dbf6896 | 2021-01-06 20:04:23 +0100 | [diff] [blame] | 334 | /* Mbed TLS error codes can combine a high-level error code and a |
| 335 | * low-level error code. The low-level error usually reflects the |
| 336 | * root cause better, so dispatch on that preferably. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 337 | int low_level_ret = -(-ret & 0x007f); |
| 338 | switch (low_level_ret != 0 ? low_level_ret : ret) { |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 339 | case 0: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 340 | return PSA_SUCCESS; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 341 | |
Dave Rodgman | 4f47f3d | 2023-08-31 12:10:00 +0100 | [diff] [blame] | 342 | #if defined(MBEDTLS_AES_C) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 343 | case MBEDTLS_ERR_AES_INVALID_KEY_LENGTH: |
| 344 | case MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 345 | return PSA_ERROR_NOT_SUPPORTED; |
Dave Rodgman | 09a9e58 | 2023-08-31 11:05:22 +0100 | [diff] [blame] | 346 | case MBEDTLS_ERR_AES_BAD_INPUT_DATA: |
| 347 | return PSA_ERROR_INVALID_ARGUMENT; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 348 | #endif |
| 349 | |
| 350 | #if defined(MBEDTLS_ASN1_PARSE_C) || defined(MBEDTLS_ASN1_WRITE_C) |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 351 | case MBEDTLS_ERR_ASN1_OUT_OF_DATA: |
| 352 | case MBEDTLS_ERR_ASN1_UNEXPECTED_TAG: |
| 353 | case MBEDTLS_ERR_ASN1_INVALID_LENGTH: |
| 354 | case MBEDTLS_ERR_ASN1_LENGTH_MISMATCH: |
| 355 | case MBEDTLS_ERR_ASN1_INVALID_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 356 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 357 | case MBEDTLS_ERR_ASN1_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 358 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 359 | case MBEDTLS_ERR_ASN1_BUF_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 360 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 361 | #endif |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 362 | |
Dave Rodgman | 4f47f3d | 2023-08-31 12:10:00 +0100 | [diff] [blame] | 363 | #if defined(MBEDTLS_CAMELLIA_C) |
Jaeden Amero | 892cd6d | 2019-02-11 12:21:12 +0000 | [diff] [blame] | 364 | case MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA: |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 365 | case MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 366 | return PSA_ERROR_NOT_SUPPORTED; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 367 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 368 | |
Dave Rodgman | 4f47f3d | 2023-08-31 12:10:00 +0100 | [diff] [blame] | 369 | #if defined(MBEDTLS_CCM_C) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 370 | case MBEDTLS_ERR_CCM_BAD_INPUT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 371 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 372 | case MBEDTLS_ERR_CCM_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 373 | return PSA_ERROR_INVALID_SIGNATURE; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 374 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 375 | |
Dave Rodgman | 4f47f3d | 2023-08-31 12:10:00 +0100 | [diff] [blame] | 376 | #if defined(MBEDTLS_CHACHA20_C) |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 377 | case MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 378 | return PSA_ERROR_INVALID_ARGUMENT; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 379 | #endif |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 380 | |
Dave Rodgman | 4f47f3d | 2023-08-31 12:10:00 +0100 | [diff] [blame] | 381 | #if defined(MBEDTLS_CHACHAPOLY_C) |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 382 | case MBEDTLS_ERR_CHACHAPOLY_BAD_STATE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 383 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 384 | case MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 385 | return PSA_ERROR_INVALID_SIGNATURE; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 386 | #endif |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 387 | |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 388 | #if defined(MBEDTLS_CIPHER_C) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 389 | case MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 390 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 391 | case MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 392 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 393 | case MBEDTLS_ERR_CIPHER_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 394 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 395 | case MBEDTLS_ERR_CIPHER_INVALID_PADDING: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 396 | return PSA_ERROR_INVALID_PADDING; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 397 | case MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 398 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 399 | case MBEDTLS_ERR_CIPHER_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 400 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 401 | case MBEDTLS_ERR_CIPHER_INVALID_CONTEXT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 402 | return PSA_ERROR_CORRUPTION_DETECTED; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 403 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 404 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 405 | #if !(defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) || \ |
| 406 | defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE)) |
Gilles Peskine | bee96c8 | 2020-11-23 21:00:09 +0100 | [diff] [blame] | 407 | /* Only check CTR_DRBG error codes if underlying mbedtls_xxx |
| 408 | * functions are passed a CTR_DRBG instance. */ |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 409 | case MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 410 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 411 | case MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG: |
| 412 | case MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 413 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 414 | case MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 415 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 416 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 417 | |
Dave Rodgman | 4f47f3d | 2023-08-31 12:10:00 +0100 | [diff] [blame] | 418 | #if defined(MBEDTLS_DES_C) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 419 | case MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 420 | return PSA_ERROR_NOT_SUPPORTED; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 421 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 422 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 423 | case MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED: |
| 424 | case MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE: |
| 425 | case MBEDTLS_ERR_ENTROPY_SOURCE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 426 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 427 | |
Dave Rodgman | 4f47f3d | 2023-08-31 12:10:00 +0100 | [diff] [blame] | 428 | #if defined(MBEDTLS_GCM_C) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 429 | case MBEDTLS_ERR_GCM_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 430 | return PSA_ERROR_INVALID_SIGNATURE; |
Mateusz Starzyk | f28261f | 2021-09-30 16:39:07 +0200 | [diff] [blame] | 431 | case MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 432 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 433 | case MBEDTLS_ERR_GCM_BAD_INPUT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 434 | return PSA_ERROR_INVALID_ARGUMENT; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 435 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 436 | |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 437 | #if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) && \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 438 | defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE) |
Gilles Peskine | bee96c8 | 2020-11-23 21:00:09 +0100 | [diff] [blame] | 439 | /* Only check HMAC_DRBG error codes if underlying mbedtls_xxx |
| 440 | * functions are passed a HMAC_DRBG instance. */ |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 441 | case MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 442 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 443 | case MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG: |
| 444 | case MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 445 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 446 | case MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 447 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 448 | #endif |
| 449 | |
Dave Rodgman | dea266f | 2023-08-31 11:52:43 +0100 | [diff] [blame] | 450 | #if defined(MBEDTLS_MD_LIGHT) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 451 | case MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 452 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 453 | case MBEDTLS_ERR_MD_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 454 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 455 | case MBEDTLS_ERR_MD_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 456 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 457 | #if defined(MBEDTLS_FS_IO) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 458 | case MBEDTLS_ERR_MD_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 459 | return PSA_ERROR_STORAGE_FAILURE; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 460 | #endif |
| 461 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 462 | |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 463 | #if defined(MBEDTLS_BIGNUM_C) |
| 464 | #if defined(MBEDTLS_FS_IO) |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 465 | case MBEDTLS_ERR_MPI_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 466 | return PSA_ERROR_STORAGE_FAILURE; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 467 | #endif |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 468 | case MBEDTLS_ERR_MPI_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 469 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 470 | case MBEDTLS_ERR_MPI_INVALID_CHARACTER: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 471 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 472 | case MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 473 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 474 | case MBEDTLS_ERR_MPI_NEGATIVE_VALUE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 475 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 476 | case MBEDTLS_ERR_MPI_DIVISION_BY_ZERO: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 477 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 478 | case MBEDTLS_ERR_MPI_NOT_ACCEPTABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 479 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 480 | case MBEDTLS_ERR_MPI_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 481 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 482 | #endif |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 483 | |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 484 | #if defined(MBEDTLS_PK_C) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 485 | case MBEDTLS_ERR_PK_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 486 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 487 | case MBEDTLS_ERR_PK_TYPE_MISMATCH: |
| 488 | case MBEDTLS_ERR_PK_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 489 | return PSA_ERROR_INVALID_ARGUMENT; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 490 | #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) || defined(MBEDTLS_FS_IO) || \ |
| 491 | defined(MBEDTLS_PSA_ITS_FILE_C) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 492 | case MBEDTLS_ERR_PK_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 493 | return PSA_ERROR_STORAGE_FAILURE; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 494 | #endif |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 495 | case MBEDTLS_ERR_PK_KEY_INVALID_VERSION: |
| 496 | case MBEDTLS_ERR_PK_KEY_INVALID_FORMAT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 497 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 498 | case MBEDTLS_ERR_PK_UNKNOWN_PK_ALG: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 499 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 500 | case MBEDTLS_ERR_PK_PASSWORD_REQUIRED: |
| 501 | case MBEDTLS_ERR_PK_PASSWORD_MISMATCH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 502 | return PSA_ERROR_NOT_PERMITTED; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 503 | case MBEDTLS_ERR_PK_INVALID_PUBKEY: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 504 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 505 | case MBEDTLS_ERR_PK_INVALID_ALG: |
| 506 | case MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE: |
| 507 | case MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 508 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 509 | case MBEDTLS_ERR_PK_SIG_LEN_MISMATCH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 510 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | f9f1bdf | 2021-06-23 20:32:27 +0200 | [diff] [blame] | 511 | case MBEDTLS_ERR_PK_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 512 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 513 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 514 | |
Gilles Peskine | ff2d200 | 2019-05-06 15:26:23 +0200 | [diff] [blame] | 515 | case MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 516 | return PSA_ERROR_HARDWARE_FAILURE; |
Gilles Peskine | ff2d200 | 2019-05-06 15:26:23 +0200 | [diff] [blame] | 517 | case MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 518 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | ff2d200 | 2019-05-06 15:26:23 +0200 | [diff] [blame] | 519 | |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 520 | #if defined(MBEDTLS_RSA_C) |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 521 | case MBEDTLS_ERR_RSA_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 522 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 523 | case MBEDTLS_ERR_RSA_INVALID_PADDING: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 524 | return PSA_ERROR_INVALID_PADDING; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 525 | case MBEDTLS_ERR_RSA_KEY_GEN_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 526 | return PSA_ERROR_HARDWARE_FAILURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 527 | case MBEDTLS_ERR_RSA_KEY_CHECK_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 528 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 529 | case MBEDTLS_ERR_RSA_PUBLIC_FAILED: |
| 530 | case MBEDTLS_ERR_RSA_PRIVATE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 531 | return PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 532 | case MBEDTLS_ERR_RSA_VERIFY_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 533 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 534 | case MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 535 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 536 | case MBEDTLS_ERR_RSA_RNG_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 537 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 538 | #endif |
Manuel Pégourié-Gonnard | 93c0847 | 2021-04-15 12:23:55 +0200 | [diff] [blame] | 539 | |
Dave Rodgman | 1dab445 | 2023-09-01 09:59:51 +0100 | [diff] [blame] | 540 | #if defined(MBEDTLS_ECP_LIGHT) |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 541 | case MBEDTLS_ERR_ECP_BAD_INPUT_DATA: |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 542 | case MBEDTLS_ERR_ECP_INVALID_KEY: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 543 | return PSA_ERROR_INVALID_ARGUMENT; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 544 | case MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 545 | return PSA_ERROR_BUFFER_TOO_SMALL; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 546 | case MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 547 | return PSA_ERROR_NOT_SUPPORTED; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 548 | case MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH: |
| 549 | case MBEDTLS_ERR_ECP_VERIFY_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 550 | return PSA_ERROR_INVALID_SIGNATURE; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 551 | case MBEDTLS_ERR_ECP_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 552 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | 40d8160 | 2020-11-25 00:09:47 +0100 | [diff] [blame] | 553 | case MBEDTLS_ERR_ECP_RANDOM_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 554 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 40d8160 | 2020-11-25 00:09:47 +0100 | [diff] [blame] | 555 | |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 556 | #if defined(MBEDTLS_ECP_RESTARTABLE) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 557 | case MBEDTLS_ERR_ECP_IN_PROGRESS: |
| 558 | return PSA_OPERATION_INCOMPLETE; |
Dave Rodgman | 509b567 | 2023-08-16 19:26:23 +0100 | [diff] [blame] | 559 | #endif |
| 560 | #endif |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 561 | |
Janos Follath | a13b905 | 2019-11-22 12:48:59 +0000 | [diff] [blame] | 562 | case MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 563 | return PSA_ERROR_CORRUPTION_DETECTED; |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 564 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 565 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 566 | return PSA_ERROR_GENERIC_ERROR; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 567 | } |
| 568 | } |
| 569 | |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 570 | /** |
| 571 | * \brief For output buffers which contain "tags" |
| 572 | * (outputs that may be checked for validity like |
| 573 | * hashes, MACs and signatures), fill the unused |
| 574 | * part of the output buffer (the whole buffer on |
| 575 | * error, the trailing part on success) with |
| 576 | * something that isn't a valid tag (barring an |
| 577 | * attack on the tag and deliberately-crafted |
| 578 | * input), in case the caller doesn't check the |
| 579 | * return status properly. |
| 580 | * |
| 581 | * \param output_buffer Pointer to buffer to wipe. May not be NULL |
| 582 | * unless \p output_buffer_size is zero. |
| 583 | * \param status Status of function called to generate |
| 584 | * output_buffer originally |
| 585 | * \param output_buffer_size Size of output buffer. If zero, \p output_buffer |
| 586 | * could be NULL. |
| 587 | * \param output_buffer_length Length of data written to output_buffer, must be |
| 588 | * less than \p output_buffer_size |
| 589 | */ |
| 590 | static void psa_wipe_tag_output_buffer(uint8_t *output_buffer, psa_status_t status, |
Paul Elliott | 7118d17 | 2023-02-26 16:57:05 +0000 | [diff] [blame] | 591 | size_t output_buffer_size, size_t output_buffer_length) |
| 592 | { |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 593 | size_t offset = 0; |
| 594 | |
| 595 | if (output_buffer_size == 0) { |
| 596 | /* If output_buffer_size is 0 then we have nothing to do. We must not |
| 597 | call memset because output_buffer may be NULL in this case */ |
| 598 | return; |
| 599 | } |
| 600 | |
| 601 | if (status == PSA_SUCCESS) { |
| 602 | offset = output_buffer_length; |
| 603 | } |
| 604 | |
| 605 | memset(output_buffer + offset, '!', output_buffer_size - offset); |
| 606 | } |
| 607 | |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 608 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 609 | psa_status_t psa_validate_unstructured_key_bit_size(psa_key_type_t type, |
| 610 | size_t bits) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 611 | { |
| 612 | /* Check that the bit size is acceptable for the key type */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 613 | switch (type) { |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 614 | case PSA_KEY_TYPE_RAW_DATA: |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 615 | case PSA_KEY_TYPE_HMAC: |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 616 | case PSA_KEY_TYPE_DERIVE: |
Neil Armstrong | 4b5710f | 2022-05-25 11:30:27 +0200 | [diff] [blame] | 617 | case PSA_KEY_TYPE_PASSWORD: |
| 618 | case PSA_KEY_TYPE_PASSWORD_HASH: |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 619 | break; |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 620 | #if defined(PSA_WANT_KEY_TYPE_AES) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 621 | case PSA_KEY_TYPE_AES: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 622 | if (bits != 128 && bits != 192 && bits != 256) { |
| 623 | return PSA_ERROR_INVALID_ARGUMENT; |
| 624 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 625 | break; |
| 626 | #endif |
Gilles Peskine | 6c12a1e | 2021-09-21 11:59:39 +0200 | [diff] [blame] | 627 | #if defined(PSA_WANT_KEY_TYPE_ARIA) |
| 628 | case PSA_KEY_TYPE_ARIA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 629 | if (bits != 128 && bits != 192 && bits != 256) { |
| 630 | return PSA_ERROR_INVALID_ARGUMENT; |
| 631 | } |
Gilles Peskine | 6c12a1e | 2021-09-21 11:59:39 +0200 | [diff] [blame] | 632 | break; |
| 633 | #endif |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 634 | #if defined(PSA_WANT_KEY_TYPE_CAMELLIA) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 635 | case PSA_KEY_TYPE_CAMELLIA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 636 | if (bits != 128 && bits != 192 && bits != 256) { |
| 637 | return PSA_ERROR_INVALID_ARGUMENT; |
| 638 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 639 | break; |
| 640 | #endif |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 641 | #if defined(PSA_WANT_KEY_TYPE_DES) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 642 | case PSA_KEY_TYPE_DES: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 643 | if (bits != 64 && bits != 128 && bits != 192) { |
| 644 | return PSA_ERROR_INVALID_ARGUMENT; |
| 645 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 646 | break; |
| 647 | #endif |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 648 | #if defined(PSA_WANT_KEY_TYPE_CHACHA20) |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 649 | case PSA_KEY_TYPE_CHACHA20: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 650 | if (bits != 256) { |
| 651 | return PSA_ERROR_INVALID_ARGUMENT; |
| 652 | } |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 653 | break; |
| 654 | #endif |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 655 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 656 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 657 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 658 | if (bits % 8 != 0) { |
| 659 | return PSA_ERROR_INVALID_ARGUMENT; |
| 660 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 661 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 662 | return PSA_SUCCESS; |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 663 | } |
| 664 | |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 665 | /** Check whether a given key type is valid for use with a given MAC algorithm |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 666 | * |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 667 | * Upon successful return of this function, the behavior of #PSA_MAC_LENGTH |
| 668 | * when called with the validated \p algorithm and \p key_type is well-defined. |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 669 | * |
| 670 | * \param[in] algorithm The specific MAC algorithm (can be wildcard). |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 671 | * \param[in] key_type The key type of the key to be used with the |
| 672 | * \p algorithm. |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 673 | * |
| 674 | * \retval #PSA_SUCCESS |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 675 | * The \p key_type is valid for use with the \p algorithm |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 676 | * \retval #PSA_ERROR_INVALID_ARGUMENT |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 677 | * The \p key_type is not valid for use with the \p algorithm |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 678 | */ |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 679 | MBEDTLS_STATIC_TESTABLE psa_status_t psa_mac_key_can_do( |
Steven Cooreman | 58c94d3 | 2021-03-02 21:31:17 +0100 | [diff] [blame] | 680 | psa_algorithm_t algorithm, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 681 | psa_key_type_t key_type) |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 682 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 683 | if (PSA_ALG_IS_HMAC(algorithm)) { |
| 684 | if (key_type == PSA_KEY_TYPE_HMAC) { |
| 685 | return PSA_SUCCESS; |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 686 | } |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 687 | } |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 688 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 689 | if (PSA_ALG_IS_BLOCK_CIPHER_MAC(algorithm)) { |
| 690 | /* Check that we're calling PSA_BLOCK_CIPHER_BLOCK_LENGTH with a cipher |
| 691 | * key. */ |
| 692 | if ((key_type & PSA_KEY_TYPE_CATEGORY_MASK) == |
| 693 | PSA_KEY_TYPE_CATEGORY_SYMMETRIC) { |
| 694 | /* PSA_BLOCK_CIPHER_BLOCK_LENGTH returns 1 for stream ciphers and |
| 695 | * the block length (larger than 1) for block ciphers. */ |
| 696 | if (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) > 1) { |
| 697 | return PSA_SUCCESS; |
| 698 | } |
| 699 | } |
| 700 | } |
| 701 | |
| 702 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 703 | } |
| 704 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 705 | psa_status_t psa_allocate_buffer_to_slot(psa_key_slot_t *slot, |
| 706 | size_t buffer_length) |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 707 | { |
Valerio Setti | 8d4f150 | 2024-06-14 07:49:05 +0200 | [diff] [blame] | 708 | #if defined(MBEDTLS_PSA_STATIC_KEY_SLOTS) |
| 709 | if (slot->key.in_use) { |
| 710 | return PSA_ERROR_ALREADY_EXISTS; |
| 711 | } |
| 712 | |
| 713 | if (buffer_length > ((size_t) MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE)) { |
| 714 | return PSA_ERROR_NOT_SUPPORTED; |
| 715 | } |
| 716 | |
| 717 | slot->key.in_use = 1; |
| 718 | #else |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 719 | if (slot->key.data != NULL) { |
| 720 | return PSA_ERROR_ALREADY_EXISTS; |
| 721 | } |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 722 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 723 | slot->key.data = mbedtls_calloc(1, buffer_length); |
| 724 | if (slot->key.data == NULL) { |
| 725 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 726 | } |
Valerio Setti | 8d4f150 | 2024-06-14 07:49:05 +0200 | [diff] [blame] | 727 | #endif |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 728 | |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 729 | slot->key.bytes = buffer_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 730 | return PSA_SUCCESS; |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 731 | } |
| 732 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 733 | psa_status_t psa_copy_key_material_into_slot(psa_key_slot_t *slot, |
| 734 | const uint8_t *data, |
| 735 | size_t data_length) |
Steven Cooreman | f7cebd4 | 2020-10-13 20:27:40 +0200 | [diff] [blame] | 736 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 737 | psa_status_t status = psa_allocate_buffer_to_slot(slot, |
| 738 | data_length); |
| 739 | if (status != PSA_SUCCESS) { |
| 740 | return status; |
| 741 | } |
Steven Cooreman | f7cebd4 | 2020-10-13 20:27:40 +0200 | [diff] [blame] | 742 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 743 | memcpy(slot->key.data, data, data_length); |
| 744 | return PSA_SUCCESS; |
Steven Cooreman | f7cebd4 | 2020-10-13 20:27:40 +0200 | [diff] [blame] | 745 | } |
| 746 | |
Ronald Cron | a0fe59f | 2020-11-29 11:14:53 +0100 | [diff] [blame] | 747 | psa_status_t psa_import_key_into_slot( |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 748 | const psa_key_attributes_t *attributes, |
| 749 | const uint8_t *data, size_t data_length, |
| 750 | uint8_t *key_buffer, size_t key_buffer_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 751 | size_t *key_buffer_length, size_t *bits) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 752 | { |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 753 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 754 | psa_key_type_t type = attributes->type; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 755 | |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 756 | /* zero-length keys are never supported. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 757 | if (data_length == 0) { |
| 758 | return PSA_ERROR_NOT_SUPPORTED; |
| 759 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 760 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 761 | if (key_type_is_raw_bytes(type)) { |
| 762 | *bits = PSA_BYTES_TO_BITS(data_length); |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 763 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 764 | status = psa_validate_unstructured_key_bit_size(attributes->type, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 765 | *bits); |
| 766 | if (status != PSA_SUCCESS) { |
| 767 | return status; |
| 768 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 769 | |
Ronald Cron | dd04d42 | 2020-11-28 15:14:42 +0100 | [diff] [blame] | 770 | /* Copy the key material. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 771 | memcpy(key_buffer, data, data_length); |
Ronald Cron | dd04d42 | 2020-11-28 15:14:42 +0100 | [diff] [blame] | 772 | *key_buffer_length = data_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 773 | (void) key_buffer_size; |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 774 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 775 | return PSA_SUCCESS; |
| 776 | } else if (PSA_KEY_TYPE_IS_ASYMMETRIC(type)) { |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 777 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT) || \ |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 778 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 779 | if (PSA_KEY_TYPE_IS_DH(type)) { |
Przemek Stekiel | d1cf1ba | 2023-04-27 12:04:21 +0200 | [diff] [blame] | 780 | if (psa_is_dh_key_size_valid(PSA_BYTES_TO_BITS(data_length)) == 0) { |
Valerio Setti | 504a102 | 2024-01-17 15:19:30 +0100 | [diff] [blame] | 781 | return PSA_ERROR_NOT_SUPPORTED; |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 782 | } |
Przemek Stekiel | 33c91eb | 2023-05-30 15:16:35 +0200 | [diff] [blame] | 783 | return mbedtls_psa_ffdh_import_key(attributes, |
| 784 | data, data_length, |
| 785 | key_buffer, key_buffer_size, |
| 786 | key_buffer_length, |
| 787 | bits); |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 788 | } |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 789 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT) || |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 790 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) */ |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 791 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_IMPORT) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 792 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) |
| 793 | if (PSA_KEY_TYPE_IS_ECC(type)) { |
| 794 | return mbedtls_psa_ecp_import_key(attributes, |
| 795 | data, data_length, |
| 796 | key_buffer, key_buffer_size, |
| 797 | key_buffer_length, |
| 798 | bits); |
Steven Cooreman | 40120f6 | 2020-10-29 11:42:22 +0100 | [diff] [blame] | 799 | } |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 800 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_IMPORT) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 801 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) */ |
Valerio Setti | fe47890 | 2023-07-25 12:27:19 +0200 | [diff] [blame] | 802 | #if (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && \ |
| 803 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 804 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) |
| 805 | if (PSA_KEY_TYPE_IS_RSA(type)) { |
| 806 | return mbedtls_psa_rsa_import_key(attributes, |
| 807 | data, data_length, |
| 808 | key_buffer, key_buffer_size, |
| 809 | key_buffer_length, |
| 810 | bits); |
Steven Cooreman | 3ea0ce4 | 2020-10-23 11:37:05 +0200 | [diff] [blame] | 811 | } |
Valerio Setti | fe47890 | 2023-07-25 12:27:19 +0200 | [diff] [blame] | 812 | #endif /* (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && |
| 813 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 814 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */ |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 815 | } |
Steven Cooreman | 40120f6 | 2020-10-29 11:42:22 +0100 | [diff] [blame] | 816 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 817 | return PSA_ERROR_NOT_SUPPORTED; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 818 | } |
| 819 | |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 820 | /** Calculate the intersection of two algorithm usage policies. |
| 821 | * |
| 822 | * Return 0 (which allows no operation) on incompatibility. |
| 823 | */ |
| 824 | static psa_algorithm_t psa_key_policy_algorithm_intersection( |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 825 | psa_key_type_t key_type, |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 826 | psa_algorithm_t alg1, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 827 | psa_algorithm_t alg2) |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 828 | { |
Gilles Peskine | 549ea86 | 2019-05-22 11:45:59 +0200 | [diff] [blame] | 829 | /* Common case: both sides actually specify the same policy. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 830 | if (alg1 == alg2) { |
| 831 | return alg1; |
| 832 | } |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 833 | /* If the policies are from the same hash-and-sign family, check |
| 834 | * if one is a wildcard. If so the other has the specific algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 835 | if (PSA_ALG_IS_SIGN_HASH(alg1) && |
| 836 | PSA_ALG_IS_SIGN_HASH(alg2) && |
| 837 | (alg1 & ~PSA_ALG_HASH_MASK) == (alg2 & ~PSA_ALG_HASH_MASK)) { |
| 838 | if (PSA_ALG_SIGN_GET_HASH(alg1) == PSA_ALG_ANY_HASH) { |
| 839 | return alg2; |
| 840 | } |
| 841 | if (PSA_ALG_SIGN_GET_HASH(alg2) == PSA_ALG_ANY_HASH) { |
| 842 | return alg1; |
| 843 | } |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 844 | } |
| 845 | /* If the policies are from the same AEAD family, check whether |
Steven Cooreman | 7de9e2d | 2021-02-22 17:05:56 +0100 | [diff] [blame] | 846 | * one of them is a minimum-tag-length wildcard. Calculate the most |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 847 | * restrictive tag length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 848 | if (PSA_ALG_IS_AEAD(alg1) && PSA_ALG_IS_AEAD(alg2) && |
| 849 | (PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg1, 0) == |
| 850 | PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg2, 0))) { |
| 851 | size_t alg1_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg1); |
| 852 | size_t alg2_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg2); |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 853 | size_t restricted_len = alg1_len > alg2_len ? alg1_len : alg2_len; |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 854 | |
Steven Cooreman | 7de9e2d | 2021-02-22 17:05:56 +0100 | [diff] [blame] | 855 | /* If both are wildcards, return most restrictive wildcard */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 856 | if (((alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 857 | ((alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0)) { |
| 858 | return PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG( |
| 859 | alg1, restricted_len); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 860 | } |
| 861 | /* If only one is a wildcard, return specific algorithm if compatible. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 862 | if (((alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 863 | (alg1_len <= alg2_len)) { |
| 864 | return alg2; |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 865 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 866 | if (((alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 867 | (alg2_len <= alg1_len)) { |
| 868 | return alg1; |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 869 | } |
| 870 | } |
| 871 | /* If the policies are from the same MAC family, check whether one |
| 872 | * of them is a minimum-MAC-length policy. Calculate the most |
| 873 | * restrictive tag length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 874 | if (PSA_ALG_IS_MAC(alg1) && PSA_ALG_IS_MAC(alg2) && |
| 875 | (PSA_ALG_FULL_LENGTH_MAC(alg1) == |
| 876 | PSA_ALG_FULL_LENGTH_MAC(alg2))) { |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 877 | /* Validate the combination of key type and algorithm. Since the base |
| 878 | * algorithm of alg1 and alg2 are the same, we only need this once. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 879 | if (PSA_SUCCESS != psa_mac_key_can_do(alg1, key_type)) { |
| 880 | return 0; |
| 881 | } |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 882 | |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 883 | /* Get the (exact or at-least) output lengths for both sides of the |
| 884 | * requested intersection. None of the currently supported algorithms |
| 885 | * have an output length dependent on the actual key size, so setting it |
| 886 | * to a bogus value of 0 is currently OK. |
| 887 | * |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 888 | * Note that for at-least-this-length wildcard algorithms, the output |
| 889 | * length is set to the shortest allowed length, which allows us to |
| 890 | * calculate the most restrictive tag length for the intersection. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 891 | size_t alg1_len = PSA_MAC_LENGTH(key_type, 0, alg1); |
| 892 | size_t alg2_len = PSA_MAC_LENGTH(key_type, 0, alg2); |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 893 | size_t restricted_len = alg1_len > alg2_len ? alg1_len : alg2_len; |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 894 | |
Steven Cooreman | a1d8322 | 2021-02-25 10:20:29 +0100 | [diff] [blame] | 895 | /* If both are wildcards, return most restrictive wildcard */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 896 | if (((alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 897 | ((alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0)) { |
| 898 | return PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(alg1, restricted_len); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 899 | } |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 900 | |
| 901 | /* If only one is an at-least-this-length policy, the intersection would |
| 902 | * be the other (fixed-length) policy as long as said fixed length is |
| 903 | * equal to or larger than the shortest allowed length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 904 | if ((alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) { |
| 905 | return (alg1_len <= alg2_len) ? alg2 : 0; |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 906 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 907 | if ((alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) { |
| 908 | return (alg2_len <= alg1_len) ? alg1 : 0; |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 909 | } |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 910 | |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 911 | /* If none of them are wildcards, check whether they define the same tag |
| 912 | * length. This is still possible here when one is default-length and |
| 913 | * the other specific-length. Ensure to always return the |
| 914 | * specific-length version for the intersection. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 915 | if (alg1_len == alg2_len) { |
| 916 | return PSA_ALG_TRUNCATED_MAC(alg1, alg1_len); |
| 917 | } |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 918 | } |
| 919 | /* If the policies are incompatible, allow nothing. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 920 | return 0; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 921 | } |
| 922 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 923 | static int psa_key_algorithm_permits(psa_key_type_t key_type, |
| 924 | psa_algorithm_t policy_alg, |
| 925 | psa_algorithm_t requested_alg) |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 926 | { |
Gilles Peskine | 549ea86 | 2019-05-22 11:45:59 +0200 | [diff] [blame] | 927 | /* Common case: the policy only allows requested_alg. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 928 | if (requested_alg == policy_alg) { |
| 929 | return 1; |
| 930 | } |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 931 | /* If policy_alg is a hash-and-sign with a wildcard for the hash, |
| 932 | * and requested_alg is the same hash-and-sign family with any hash, |
| 933 | * then requested_alg is compliant with policy_alg. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 934 | if (PSA_ALG_IS_SIGN_HASH(requested_alg) && |
| 935 | PSA_ALG_SIGN_GET_HASH(policy_alg) == PSA_ALG_ANY_HASH) { |
| 936 | return (policy_alg & ~PSA_ALG_HASH_MASK) == |
| 937 | (requested_alg & ~PSA_ALG_HASH_MASK); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 938 | } |
| 939 | /* If policy_alg is a wildcard AEAD algorithm of the same base as |
| 940 | * the requested algorithm, check the requested tag length to be |
| 941 | * equal-length or longer than the wildcard-specified length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 942 | if (PSA_ALG_IS_AEAD(policy_alg) && |
| 943 | PSA_ALG_IS_AEAD(requested_alg) && |
| 944 | (PSA_ALG_AEAD_WITH_SHORTENED_TAG(policy_alg, 0) == |
| 945 | PSA_ALG_AEAD_WITH_SHORTENED_TAG(requested_alg, 0)) && |
| 946 | ((policy_alg & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0)) { |
| 947 | return PSA_ALG_AEAD_GET_TAG_LENGTH(policy_alg) <= |
| 948 | PSA_ALG_AEAD_GET_TAG_LENGTH(requested_alg); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 949 | } |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 950 | /* If policy_alg is a MAC algorithm of the same base as the requested |
| 951 | * algorithm, check whether their MAC lengths are compatible. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 952 | if (PSA_ALG_IS_MAC(policy_alg) && |
| 953 | PSA_ALG_IS_MAC(requested_alg) && |
| 954 | (PSA_ALG_FULL_LENGTH_MAC(policy_alg) == |
| 955 | PSA_ALG_FULL_LENGTH_MAC(requested_alg))) { |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 956 | /* Validate the combination of key type and algorithm. Since the policy |
| 957 | * and requested algorithms are the same, we only need this once. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 958 | if (PSA_SUCCESS != psa_mac_key_can_do(policy_alg, key_type)) { |
| 959 | return 0; |
| 960 | } |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 961 | |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 962 | /* Get both the requested output length for the algorithm which is to be |
| 963 | * verified, and the default output length for the base algorithm. |
| 964 | * Note that none of the currently supported algorithms have an output |
| 965 | * length dependent on actual key size, so setting it to a bogus value |
| 966 | * of 0 is currently OK. */ |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 967 | size_t requested_output_length = PSA_MAC_LENGTH( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 968 | key_type, 0, requested_alg); |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 969 | size_t default_output_length = PSA_MAC_LENGTH( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 970 | key_type, 0, |
| 971 | PSA_ALG_FULL_LENGTH_MAC(requested_alg)); |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 972 | |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 973 | /* If the policy is default-length, only allow an algorithm with |
| 974 | * a declared exact-length matching the default. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 975 | if (PSA_MAC_TRUNCATED_LENGTH(policy_alg) == 0) { |
| 976 | return requested_output_length == default_output_length; |
| 977 | } |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 978 | |
| 979 | /* If the requested algorithm is default-length, allow it if the policy |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 980 | * length exactly matches the default length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 981 | if (PSA_MAC_TRUNCATED_LENGTH(requested_alg) == 0 && |
| 982 | PSA_MAC_TRUNCATED_LENGTH(policy_alg) == default_output_length) { |
| 983 | return 1; |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 984 | } |
| 985 | |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 986 | /* If policy_alg is an at-least-this-length wildcard MAC algorithm, |
| 987 | * check for the requested MAC length to be equal to or longer than the |
| 988 | * minimum allowed length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 989 | if ((policy_alg & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) { |
| 990 | return PSA_MAC_TRUNCATED_LENGTH(policy_alg) <= |
| 991 | requested_output_length; |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 992 | } |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 993 | } |
Steven Cooreman | ce48e85 | 2020-10-05 16:02:45 +0200 | [diff] [blame] | 994 | /* If policy_alg is a generic key agreement operation, then using it for |
Steven Cooreman | fa5e631 | 2020-10-15 17:07:12 +0200 | [diff] [blame] | 995 | * a key derivation with that key agreement should also be allowed. This |
| 996 | * behaviour is expected to be defined in a future specification version. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 997 | if (PSA_ALG_IS_RAW_KEY_AGREEMENT(policy_alg) && |
| 998 | PSA_ALG_IS_KEY_AGREEMENT(requested_alg)) { |
| 999 | return PSA_ALG_KEY_AGREEMENT_GET_BASE(requested_alg) == |
| 1000 | policy_alg; |
Steven Cooreman | ce48e85 | 2020-10-05 16:02:45 +0200 | [diff] [blame] | 1001 | } |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 1002 | /* If it isn't explicitly permitted, it's forbidden. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1003 | return 0; |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 1004 | } |
| 1005 | |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 1006 | /** Test whether a policy permits an algorithm. |
| 1007 | * |
| 1008 | * The caller must test usage flags separately. |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1009 | * |
Steven Cooreman | 5a17267 | 2021-03-02 21:27:42 +0100 | [diff] [blame] | 1010 | * \note This function requires providing the key type for which the policy is |
| 1011 | * being validated, since some algorithm policy definitions (e.g. MAC) |
| 1012 | * have different properties depending on what kind of cipher it is |
| 1013 | * combined with. |
| 1014 | * |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1015 | * \retval PSA_SUCCESS When \p alg is a specific algorithm |
| 1016 | * allowed by the \p policy. |
| 1017 | * \retval PSA_ERROR_INVALID_ARGUMENT When \p alg is not a specific algorithm |
| 1018 | * \retval PSA_ERROR_NOT_PERMITTED When \p alg is a specific algorithm, but |
| 1019 | * the \p policy does not allow it. |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 1020 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1021 | static psa_status_t psa_key_policy_permits(const psa_key_policy_t *policy, |
| 1022 | psa_key_type_t key_type, |
| 1023 | psa_algorithm_t alg) |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 1024 | { |
Steven Cooreman | d788fab | 2021-02-25 11:29:17 +0100 | [diff] [blame] | 1025 | /* '0' is not a valid algorithm */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1026 | if (alg == 0) { |
| 1027 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1028 | } |
Steven Cooreman | d788fab | 2021-02-25 11:29:17 +0100 | [diff] [blame] | 1029 | |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1030 | /* A requested algorithm cannot be a wildcard. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1031 | if (PSA_ALG_IS_WILDCARD(alg)) { |
| 1032 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1033 | } |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1034 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1035 | if (psa_key_algorithm_permits(key_type, policy->alg, alg) || |
| 1036 | psa_key_algorithm_permits(key_type, policy->alg2, alg)) { |
| 1037 | return PSA_SUCCESS; |
| 1038 | } else { |
| 1039 | return PSA_ERROR_NOT_PERMITTED; |
| 1040 | } |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 1041 | } |
| 1042 | |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 1043 | /** Restrict a key policy based on a constraint. |
| 1044 | * |
Steven Cooreman | 5a17267 | 2021-03-02 21:27:42 +0100 | [diff] [blame] | 1045 | * \note This function requires providing the key type for which the policy is |
| 1046 | * being restricted, since some algorithm policy definitions (e.g. MAC) |
| 1047 | * have different properties depending on what kind of cipher it is |
| 1048 | * combined with. |
| 1049 | * |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 1050 | * \param[in] key_type The key type for which to restrict the policy |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 1051 | * \param[in,out] policy The policy to restrict. |
| 1052 | * \param[in] constraint The policy constraint to apply. |
| 1053 | * |
| 1054 | * \retval #PSA_SUCCESS |
| 1055 | * \c *policy contains the intersection of the original value of |
| 1056 | * \c *policy and \c *constraint. |
| 1057 | * \retval #PSA_ERROR_INVALID_ARGUMENT |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 1058 | * \c key_type, \c *policy and \c *constraint are incompatible. |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 1059 | * \c *policy is unchanged. |
| 1060 | */ |
| 1061 | static psa_status_t psa_restrict_key_policy( |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 1062 | psa_key_type_t key_type, |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 1063 | psa_key_policy_t *policy, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1064 | const psa_key_policy_t *constraint) |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 1065 | { |
| 1066 | psa_algorithm_t intersection_alg = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1067 | psa_key_policy_algorithm_intersection(key_type, policy->alg, |
| 1068 | constraint->alg); |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 1069 | psa_algorithm_t intersection_alg2 = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1070 | psa_key_policy_algorithm_intersection(key_type, policy->alg2, |
| 1071 | constraint->alg2); |
| 1072 | if (intersection_alg == 0 && policy->alg != 0 && constraint->alg != 0) { |
| 1073 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1074 | } |
| 1075 | if (intersection_alg2 == 0 && policy->alg2 != 0 && constraint->alg2 != 0) { |
| 1076 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1077 | } |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 1078 | policy->usage &= constraint->usage; |
| 1079 | policy->alg = intersection_alg; |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 1080 | policy->alg2 = intersection_alg2; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1081 | return PSA_SUCCESS; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 1082 | } |
| 1083 | |
Przemek Stekiel | 061f694 | 2022-11-30 10:51:35 +0100 | [diff] [blame] | 1084 | /** Get the description of a key given its identifier and policy constraints |
| 1085 | * and lock it. |
| 1086 | * |
| 1087 | * The key must have allow all the usage flags set in \p usage. If \p alg is |
| 1088 | * nonzero, the key must allow operations with this algorithm. If \p alg is |
| 1089 | * zero, the algorithm is not checked. |
| 1090 | * |
| 1091 | * In case of a persistent key, the function loads the description of the key |
| 1092 | * into a key slot if not already done. |
| 1093 | * |
Ryan Everett | 098c665 | 2024-01-03 13:03:36 +0000 | [diff] [blame] | 1094 | * On success, the returned key slot has been registered for reading. |
Ryan Everett | 93cea57 | 2024-02-20 18:01:29 +0000 | [diff] [blame] | 1095 | * It is the responsibility of the caller to then unregister |
| 1096 | * once they have finished reading the contents of the slot. |
| 1097 | * The caller unregisters by calling psa_unregister_read() or |
| 1098 | * psa_unregister_read_under_mutex(). psa_unregister_read() must be called |
| 1099 | * if and only if the caller already holds the global key slot mutex |
| 1100 | * (when mutexes are enabled). psa_unregister_read_under_mutex() encapsulates |
| 1101 | * the unregister with mutex lock and unlock operations. |
Przemek Stekiel | 061f694 | 2022-11-30 10:51:35 +0100 | [diff] [blame] | 1102 | */ |
| 1103 | static psa_status_t psa_get_and_lock_key_slot_with_policy( |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1104 | mbedtls_svc_key_id_t key, |
| 1105 | psa_key_slot_t **p_slot, |
| 1106 | psa_key_usage_t usage, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1107 | psa_algorithm_t alg) |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1108 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1109 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 1110 | psa_key_slot_t *slot = NULL; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1111 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1112 | status = psa_get_and_lock_key_slot(key, p_slot); |
| 1113 | if (status != PSA_SUCCESS) { |
| 1114 | return status; |
| 1115 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1116 | slot = *p_slot; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1117 | |
| 1118 | /* Enforce that usage policy for the key slot contains all the flags |
| 1119 | * required by the usage parameter. There is one exception: public |
| 1120 | * keys can always be exported, so we treat public key objects as |
| 1121 | * if they had the export flag. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1122 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type)) { |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1123 | usage &= ~PSA_KEY_USAGE_EXPORT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1124 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1125 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1126 | if ((slot->attr.policy.usage & usage) != usage) { |
Steven Cooreman | 328f11c | 2021-03-02 11:44:51 +0100 | [diff] [blame] | 1127 | status = PSA_ERROR_NOT_PERMITTED; |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1128 | goto error; |
Steven Cooreman | 328f11c | 2021-03-02 11:44:51 +0100 | [diff] [blame] | 1129 | } |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 1130 | |
Shaun Case | 8b0ecbc | 2021-12-20 21:14:10 -0800 | [diff] [blame] | 1131 | /* Enforce that the usage policy permits the requested algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1132 | if (alg != 0) { |
| 1133 | status = psa_key_policy_permits(&slot->attr.policy, |
| 1134 | slot->attr.type, |
| 1135 | alg); |
| 1136 | if (status != PSA_SUCCESS) { |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1137 | goto error; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1138 | } |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1139 | } |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1140 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1141 | return PSA_SUCCESS; |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1142 | |
| 1143 | error: |
| 1144 | *p_slot = NULL; |
Ryan Everett | fb792ca | 2024-01-31 13:40:05 +0000 | [diff] [blame] | 1145 | psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1146 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1147 | return status; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1148 | } |
Darryl Green | 940d72c | 2018-07-13 13:18:51 +0100 | [diff] [blame] | 1149 | |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1150 | /** Get a key slot containing a transparent key and lock it. |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1151 | * |
| 1152 | * A transparent key is a key for which the key material is directly |
Ronald Cron | ddae0f5 | 2021-08-24 15:39:44 +0200 | [diff] [blame] | 1153 | * available, as opposed to a key in a secure element and/or to be used |
| 1154 | * by a secure element. |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1155 | * |
Ronald Cron | ddae0f5 | 2021-08-24 15:39:44 +0200 | [diff] [blame] | 1156 | * This is a temporary function that may be used instead of |
| 1157 | * psa_get_and_lock_key_slot_with_policy() when there is no opaque key support |
| 1158 | * for a cryptographic operation. |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1159 | * |
Ryan Everett | 098c665 | 2024-01-03 13:03:36 +0000 | [diff] [blame] | 1160 | * On success, the returned key slot has been registered for reading. |
Ryan Everett | 93cea57 | 2024-02-20 18:01:29 +0000 | [diff] [blame] | 1161 | * It is the responsibility of the caller to then unregister |
| 1162 | * once they have finished reading the contents of the slot. |
| 1163 | * The caller unregisters by calling psa_unregister_read() or |
| 1164 | * psa_unregister_read_under_mutex(). psa_unregister_read() must be called |
| 1165 | * if and only if the caller already holds the global key slot mutex |
| 1166 | * (when mutexes are enabled). psa_unregister_read_under_mutex() encapsulates |
| 1167 | * psa_unregister_read() with mutex lock and unlock operations. |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1168 | */ |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1169 | static psa_status_t psa_get_and_lock_transparent_key_slot_with_policy( |
| 1170 | mbedtls_svc_key_id_t key, |
| 1171 | psa_key_slot_t **p_slot, |
| 1172 | psa_key_usage_t usage, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1173 | psa_algorithm_t alg) |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1174 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1175 | psa_status_t status = psa_get_and_lock_key_slot_with_policy(key, p_slot, |
| 1176 | usage, alg); |
| 1177 | if (status != PSA_SUCCESS) { |
| 1178 | return status; |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1179 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1180 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1181 | if (psa_key_lifetime_is_external((*p_slot)->attr.lifetime)) { |
Ryan Everett | fb792ca | 2024-01-31 13:40:05 +0000 | [diff] [blame] | 1182 | psa_unregister_read_under_mutex(*p_slot); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1183 | *p_slot = NULL; |
| 1184 | return PSA_ERROR_NOT_SUPPORTED; |
| 1185 | } |
| 1186 | |
| 1187 | return PSA_SUCCESS; |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1188 | } |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1189 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1190 | psa_status_t psa_remove_key_data_from_memory(psa_key_slot_t *slot) |
Darryl Green | 40225ba | 2018-11-15 14:48:15 +0000 | [diff] [blame] | 1191 | { |
Valerio Setti | 8d4f150 | 2024-06-14 07:49:05 +0200 | [diff] [blame] | 1192 | #if defined(MBEDTLS_PSA_STATIC_KEY_SLOTS) |
| 1193 | slot->key.in_use = 0; |
| 1194 | #else /* MBEDTLS_PSA_STATIC_KEY_SLOTS */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1195 | if (slot->key.data != NULL) { |
Tom Cosgrove | 52f7e18 | 2023-08-01 09:08:48 +0100 | [diff] [blame] | 1196 | mbedtls_zeroize_and_free(slot->key.data, slot->key.bytes); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1197 | } |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1198 | |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1199 | slot->key.data = NULL; |
Valerio Setti | 8d4f150 | 2024-06-14 07:49:05 +0200 | [diff] [blame] | 1200 | #endif /* MBEDTLS_PSA_STATIC_KEY_SLOTS */ |
| 1201 | |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1202 | slot->key.bytes = 0; |
Darryl Green | 40225ba | 2018-11-15 14:48:15 +0000 | [diff] [blame] | 1203 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1204 | return PSA_SUCCESS; |
Darryl Green | 40225ba | 2018-11-15 14:48:15 +0000 | [diff] [blame] | 1205 | } |
| 1206 | |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1207 | /** Completely wipe a slot in memory, including its policy. |
| 1208 | * Persistent storage is not affected. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1209 | psa_status_t psa_wipe_key_slot(psa_key_slot_t *slot) |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1210 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1211 | psa_status_t status = psa_remove_key_data_from_memory(slot); |
Ronald Cron | ddd3d05 | 2020-10-30 14:07:07 +0100 | [diff] [blame] | 1212 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1213 | /* |
| 1214 | * As the return error code may not be handled in case of multiple errors, |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1215 | * do our best to report an unexpected amount of registered readers or |
| 1216 | * an unexpected state. |
| 1217 | * Assert with MBEDTLS_TEST_HOOK_TEST_ASSERT that the slot is valid for |
| 1218 | * wiping. |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1219 | * if the MBEDTLS_TEST_HOOKS configuration option is enabled and the |
| 1220 | * function is called as part of the execution of a test suite, the |
| 1221 | * execution of the test suite is stopped in error if the assertion fails. |
| 1222 | */ |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1223 | switch (slot->state) { |
| 1224 | case PSA_SLOT_FULL: |
| 1225 | /* In this state psa_wipe_key_slot() must only be called if the |
| 1226 | * caller is the last reader. */ |
| 1227 | case PSA_SLOT_PENDING_DELETION: |
| 1228 | /* In this state psa_wipe_key_slot() must only be called if the |
| 1229 | * caller is the last reader. */ |
Gilles Peskine | 47ad2f7 | 2024-06-10 11:42:41 +0200 | [diff] [blame] | 1230 | if (slot->var.occupied.registered_readers != 1) { |
| 1231 | MBEDTLS_TEST_HOOK_TEST_ASSERT(slot->var.occupied.registered_readers == 1); |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1232 | status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1233 | } |
| 1234 | break; |
| 1235 | case PSA_SLOT_FILLING: |
| 1236 | /* In this state registered_readers must be 0. */ |
Gilles Peskine | 47ad2f7 | 2024-06-10 11:42:41 +0200 | [diff] [blame] | 1237 | if (slot->var.occupied.registered_readers != 0) { |
| 1238 | MBEDTLS_TEST_HOOK_TEST_ASSERT(slot->var.occupied.registered_readers == 0); |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1239 | status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1240 | } |
| 1241 | break; |
| 1242 | case PSA_SLOT_EMPTY: |
| 1243 | /* The slot is already empty, it cannot be wiped. */ |
| 1244 | MBEDTLS_TEST_HOOK_TEST_ASSERT(slot->state != PSA_SLOT_EMPTY); |
| 1245 | status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1246 | break; |
| 1247 | default: |
| 1248 | /* The slot's state is invalid. */ |
| 1249 | status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | ddd3d05 | 2020-10-30 14:07:07 +0100 | [diff] [blame] | 1250 | } |
| 1251 | |
Gilles Peskine | e8199f5 | 2024-06-10 11:53:33 +0200 | [diff] [blame] | 1252 | #if defined(MBEDTLS_PSA_KEY_STORE_DYNAMIC) |
| 1253 | size_t slice_index = slot->slice_index; |
| 1254 | #endif /* MBEDTLS_PSA_KEY_STORE_DYNAMIC */ |
| 1255 | |
| 1256 | |
Gilles Peskine | 3f7cd62 | 2019-08-13 15:01:08 +0200 | [diff] [blame] | 1257 | /* Multipart operations may still be using the key. This is safe |
| 1258 | * because all multipart operation objects are independent from |
| 1259 | * the key slot: if they need to access the key after the setup |
| 1260 | * phase, they have a copy of the key. Note that this means that |
| 1261 | * key material can linger until all operations are completed. */ |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1262 | /* At this point, key material and other type-specific content has |
| 1263 | * been wiped. Clear remaining metadata. We can call memset and not |
Ryan Everett | aa33c51 | 2023-12-21 17:32:07 +0000 | [diff] [blame] | 1264 | * zeroize because the metadata is not particularly sensitive. |
| 1265 | * This memset also sets the slot's state to PSA_SLOT_EMPTY. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1266 | memset(slot, 0, sizeof(*slot)); |
Gilles Peskine | e8199f5 | 2024-06-10 11:53:33 +0200 | [diff] [blame] | 1267 | |
| 1268 | #if defined(MBEDTLS_PSA_KEY_STORE_DYNAMIC) |
| 1269 | /* If the slot is already corrupted, something went deeply wrong, |
| 1270 | * like a thread still using the slot or a stray pointer leading |
| 1271 | * to the slot's memory being used for another object. Let the slot |
| 1272 | * leak rather than make the corruption worse. */ |
| 1273 | if (status == PSA_SUCCESS) { |
| 1274 | status = psa_free_key_slot(slice_index, slot); |
| 1275 | } |
| 1276 | #endif /* MBEDTLS_PSA_KEY_STORE_DYNAMIC */ |
| 1277 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1278 | return status; |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1279 | } |
| 1280 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1281 | psa_status_t psa_destroy_key(mbedtls_svc_key_id_t key) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1282 | { |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 1283 | psa_key_slot_t *slot; |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1284 | psa_status_t status; /* status of the last operation */ |
| 1285 | psa_status_t overall_status = PSA_SUCCESS; |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1286 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
| 1287 | psa_se_drv_table_entry_t *driver; |
| 1288 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1289 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1290 | if (mbedtls_svc_key_id_is_null(key)) { |
| 1291 | return PSA_SUCCESS; |
| 1292 | } |
Gilles Peskine | 1841cf4 | 2019-10-08 15:48:25 +0200 | [diff] [blame] | 1293 | |
Ronald Cron | f291111 | 2020-10-29 17:51:10 +0100 | [diff] [blame] | 1294 | /* |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1295 | * Get the description of the key in a key slot, and register to read it. |
| 1296 | * In the case of a persistent key, this will load the key description |
| 1297 | * from persistent memory if not done yet. |
| 1298 | * We cannot avoid this loading as without it we don't know if |
Ronald Cron | f291111 | 2020-10-29 17:51:10 +0100 | [diff] [blame] | 1299 | * the key is operated by an SE or not and this information is needed by |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1300 | * the current implementation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1301 | status = psa_get_and_lock_key_slot(key, &slot); |
| 1302 | if (status != PSA_SUCCESS) { |
| 1303 | return status; |
| 1304 | } |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1305 | |
Ryan Everett | c053d96 | 2024-01-25 17:56:32 +0000 | [diff] [blame] | 1306 | #if defined(MBEDTLS_THREADING_C) |
Ryan Everett | 763971f | 2024-01-29 17:13:36 +0000 | [diff] [blame] | 1307 | /* We cannot unlock between setting the state to PENDING_DELETION |
| 1308 | * and destroying the key in storage, as otherwise another thread |
| 1309 | * could load the key into a new slot and the key will not be |
| 1310 | * fully destroyed. */ |
Ryan Everett | c053d96 | 2024-01-25 17:56:32 +0000 | [diff] [blame] | 1311 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_lock( |
| 1312 | &mbedtls_threading_key_slot_mutex)); |
Ryan Everett | d868b74 | 2024-03-08 18:35:09 +0000 | [diff] [blame] | 1313 | |
| 1314 | if (slot->state == PSA_SLOT_PENDING_DELETION) { |
| 1315 | /* Another thread has destroyed the key between us locking the slot |
| 1316 | * and us gaining the mutex. Unregister from the slot, |
| 1317 | * and report that the key does not exist. */ |
| 1318 | status = psa_unregister_read(slot); |
| 1319 | |
| 1320 | PSA_THREADING_CHK_RET(mbedtls_mutex_unlock( |
| 1321 | &mbedtls_threading_key_slot_mutex)); |
| 1322 | return (status == PSA_SUCCESS) ? PSA_ERROR_INVALID_HANDLE : status; |
| 1323 | } |
Ryan Everett | c053d96 | 2024-01-25 17:56:32 +0000 | [diff] [blame] | 1324 | #endif |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1325 | /* Set the key slot containing the key description's state to |
| 1326 | * PENDING_DELETION. This stops new operations from registering |
| 1327 | * to read the slot. Current readers can safely continue to access |
| 1328 | * the key within the slot; the last registered reader will |
| 1329 | * automatically wipe the slot when they call psa_unregister_read(). |
| 1330 | * If the key is persistent, we can now delete the copy of the key |
| 1331 | * from memory. If the key is opaque, we require the driver to |
| 1332 | * deal with the deletion. */ |
Ryan Everett | d868b74 | 2024-03-08 18:35:09 +0000 | [diff] [blame] | 1333 | overall_status = psa_key_slot_state_transition(slot, PSA_SLOT_FULL, |
| 1334 | PSA_SLOT_PENDING_DELETION); |
Ryan Everett | c053d96 | 2024-01-25 17:56:32 +0000 | [diff] [blame] | 1335 | |
Ryan Everett | d868b74 | 2024-03-08 18:35:09 +0000 | [diff] [blame] | 1336 | if (overall_status != PSA_SUCCESS) { |
Ryan Everett | c053d96 | 2024-01-25 17:56:32 +0000 | [diff] [blame] | 1337 | goto exit; |
| 1338 | } |
Ronald Cron | f291111 | 2020-10-29 17:51:10 +0100 | [diff] [blame] | 1339 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1340 | if (PSA_KEY_LIFETIME_IS_READ_ONLY(slot->attr.lifetime)) { |
Gilles Peskine | 6687cd0 | 2021-04-21 22:32:05 +0200 | [diff] [blame] | 1341 | /* Refuse the destruction of a read-only key (which may or may not work |
| 1342 | * if we attempt it, depending on whether the key is merely read-only |
| 1343 | * by policy or actually physically read-only). |
Gilles Peskine | f9a046e | 2021-06-07 23:27:54 +0200 | [diff] [blame] | 1344 | * Just do the best we can, which is to wipe the copy in memory |
| 1345 | * (done in this function's cleanup code). */ |
| 1346 | overall_status = PSA_ERROR_NOT_PERMITTED; |
| 1347 | goto exit; |
Gilles Peskine | 6687cd0 | 2021-04-21 22:32:05 +0200 | [diff] [blame] | 1348 | } |
| 1349 | |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1350 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1351 | driver = psa_get_se_driver_entry(slot->attr.lifetime); |
| 1352 | if (driver != NULL) { |
Gilles Peskine | 60450a4 | 2019-07-25 11:32:45 +0200 | [diff] [blame] | 1353 | /* For a key in a secure element, we need to do three things: |
| 1354 | * remove the key file in internal storage, destroy the |
| 1355 | * key inside the secure element, and update the driver's |
| 1356 | * persistent data. Start a transaction that will encompass these |
| 1357 | * three actions. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1358 | psa_crypto_prepare_transaction(PSA_CRYPTO_TRANSACTION_DESTROY_KEY); |
Gilles Peskine | 8e33870 | 2019-07-30 20:06:31 +0200 | [diff] [blame] | 1359 | psa_crypto_transaction.key.lifetime = slot->attr.lifetime; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1360 | psa_crypto_transaction.key.slot = psa_key_slot_get_slot_number(slot); |
Gilles Peskine | 8e33870 | 2019-07-30 20:06:31 +0200 | [diff] [blame] | 1361 | psa_crypto_transaction.key.id = slot->attr.id; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1362 | status = psa_crypto_save_transaction(); |
| 1363 | if (status != PSA_SUCCESS) { |
| 1364 | (void) psa_crypto_stop_transaction(); |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1365 | /* We should still try to destroy the key in the secure |
| 1366 | * element and the key metadata in storage. This is especially |
| 1367 | * important if the error is that the storage is full. |
| 1368 | * But how to do it exactly without risking an inconsistent |
| 1369 | * state after a reset? |
| 1370 | * https://github.com/ARMmbed/mbed-crypto/issues/215 |
| 1371 | */ |
| 1372 | overall_status = status; |
| 1373 | goto exit; |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1374 | } |
| 1375 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1376 | status = psa_destroy_se_key(driver, |
| 1377 | psa_key_slot_get_slot_number(slot)); |
| 1378 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1379 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1380 | } |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1381 | } |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1382 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1383 | |
Darryl Green | d49a499 | 2018-06-18 17:27:26 +0100 | [diff] [blame] | 1384 | #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1385 | if (!PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) { |
Ryan Everett | 4a0ba80 | 2024-01-17 14:12:33 +0000 | [diff] [blame] | 1386 | /* Destroy the copy of the persistent key from storage. |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1387 | * The slot will still hold a copy of the key until the last reader |
| 1388 | * unregisters. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1389 | status = psa_destroy_persistent_key(slot->attr.id); |
| 1390 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1391 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1392 | } |
Darryl Green | d49a499 | 2018-06-18 17:27:26 +0100 | [diff] [blame] | 1393 | } |
| 1394 | #endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */ |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1395 | |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1396 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1397 | if (driver != NULL) { |
| 1398 | status = psa_save_se_persistent_data(driver); |
| 1399 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1400 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1401 | } |
| 1402 | status = psa_crypto_stop_transaction(); |
| 1403 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1404 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1405 | } |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1406 | } |
| 1407 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1408 | |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1409 | exit: |
Ryan Everett | 7ed542e | 2024-01-17 11:39:09 +0000 | [diff] [blame] | 1410 | /* Unregister from reading the slot. If we are the last active reader |
| 1411 | * then this will wipe the slot. */ |
| 1412 | status = psa_unregister_read(slot); |
| 1413 | /* Prioritize CORRUPTION_DETECTED from unregistering over |
| 1414 | * a storage error. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1415 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1416 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1417 | } |
Ryan Everett | c053d96 | 2024-01-25 17:56:32 +0000 | [diff] [blame] | 1418 | |
| 1419 | #if defined(MBEDTLS_THREADING_C) |
Ryan Everett | 7fee4f7 | 2024-02-09 14:11:27 +0000 | [diff] [blame] | 1420 | /* Don't overwrite existing errors if the unlock fails. */ |
| 1421 | status = overall_status; |
Ryan Everett | c053d96 | 2024-01-25 17:56:32 +0000 | [diff] [blame] | 1422 | PSA_THREADING_CHK_RET(mbedtls_mutex_unlock( |
| 1423 | &mbedtls_threading_key_slot_mutex)); |
| 1424 | #endif |
| 1425 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1426 | return overall_status; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1427 | } |
| 1428 | |
Gilles Peskine | bfd322f | 2019-07-23 11:58:03 +0200 | [diff] [blame] | 1429 | /** Retrieve all the publicly-accessible attributes of a key. |
| 1430 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1431 | psa_status_t psa_get_key_attributes(mbedtls_svc_key_id_t key, |
| 1432 | psa_key_attributes_t *attributes) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1433 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1434 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 1435 | psa_key_slot_t *slot; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1436 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1437 | psa_reset_key_attributes(attributes); |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 1438 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1439 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, 0, 0); |
| 1440 | if (status != PSA_SUCCESS) { |
| 1441 | return status; |
| 1442 | } |
Gilles Peskine | b870b18 | 2018-07-06 16:02:09 +0200 | [diff] [blame] | 1443 | |
Gilles Peskine | 7fad3ef | 2024-02-28 01:08:27 +0100 | [diff] [blame] | 1444 | *attributes = slot->attr; |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1445 | |
| 1446 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1447 | if (psa_get_se_driver_entry(slot->attr.lifetime) != NULL) { |
| 1448 | psa_set_key_slot_number(attributes, |
| 1449 | psa_key_slot_get_slot_number(slot)); |
| 1450 | } |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1451 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1452 | |
Gilles Peskine | 97c0b2f | 2024-02-16 00:49:46 +0100 | [diff] [blame] | 1453 | return psa_unregister_read_under_mutex(slot); |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1454 | } |
| 1455 | |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1456 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
| 1457 | psa_status_t psa_get_key_slot_number( |
| 1458 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1459 | psa_key_slot_number_t *slot_number) |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1460 | { |
Gilles Peskine | 972539c | 2024-02-28 01:49:45 +0100 | [diff] [blame] | 1461 | if (attributes->has_slot_number) { |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1462 | *slot_number = attributes->slot_number; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1463 | return PSA_SUCCESS; |
| 1464 | } else { |
| 1465 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1466 | } |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1467 | } |
| 1468 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1469 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1470 | static psa_status_t psa_export_key_buffer_internal(const uint8_t *key_buffer, |
| 1471 | size_t key_buffer_size, |
| 1472 | uint8_t *data, |
| 1473 | size_t data_size, |
| 1474 | size_t *data_length) |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1475 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1476 | if (key_buffer_size > data_size) { |
| 1477 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 1478 | } |
| 1479 | memcpy(data, key_buffer, key_buffer_size); |
| 1480 | memset(data + key_buffer_size, 0, |
| 1481 | data_size - key_buffer_size); |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1482 | *data_length = key_buffer_size; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1483 | return PSA_SUCCESS; |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1484 | } |
| 1485 | |
Ronald Cron | 7285cda | 2020-11-26 14:46:37 +0100 | [diff] [blame] | 1486 | psa_status_t psa_export_key_internal( |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1487 | const psa_key_attributes_t *attributes, |
| 1488 | const uint8_t *key_buffer, size_t key_buffer_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1489 | uint8_t *data, size_t data_size, size_t *data_length) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1490 | { |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 1491 | psa_key_type_t type = attributes->type; |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1492 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1493 | if (key_type_is_raw_bytes(type) || |
| 1494 | PSA_KEY_TYPE_IS_RSA(type) || |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 1495 | PSA_KEY_TYPE_IS_ECC(type) || |
| 1496 | PSA_KEY_TYPE_IS_DH(type)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1497 | return psa_export_key_buffer_internal( |
| 1498 | key_buffer, key_buffer_size, |
| 1499 | data, data_size, data_length); |
| 1500 | } else { |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1501 | /* This shouldn't happen in the reference implementation, but |
| 1502 | it is valid for a special-purpose implementation to omit |
| 1503 | support for exporting certain key types. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1504 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1505 | } |
| 1506 | } |
| 1507 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1508 | psa_status_t psa_export_key(mbedtls_svc_key_id_t key, |
Ryan Everett | 45ac526 | 2024-01-08 17:15:19 +0000 | [diff] [blame] | 1509 | uint8_t *data_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1510 | size_t data_size, |
| 1511 | size_t *data_length) |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1512 | { |
| 1513 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1514 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1515 | psa_key_slot_t *slot; |
Ryan Everett | 45ac526 | 2024-01-08 17:15:19 +0000 | [diff] [blame] | 1516 | LOCAL_OUTPUT_DECLARE(data_external, data); |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1517 | |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1518 | /* Reject a zero-length output buffer now, since this can never be a |
| 1519 | * valid key representation. This way we know that data must be a valid |
| 1520 | * pointer and we can do things like memset(data, ..., data_size). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1521 | if (data_size == 0) { |
| 1522 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 1523 | } |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1524 | |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1525 | /* Set the key to empty now, so that even when there are errors, we always |
| 1526 | * set data_length to a value between 0 and data_size. On error, setting |
| 1527 | * the key to empty is a good choice because an empty key representation is |
| 1528 | * unlikely to be accepted anywhere. */ |
Jaeden Amero | f24c7f8 | 2018-06-27 17:20:43 +0100 | [diff] [blame] | 1529 | *data_length = 0; |
| 1530 | |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1531 | /* Export requires the EXPORT flag. There is an exception for public keys, |
| 1532 | * which don't require any flag, but |
| 1533 | * psa_get_and_lock_key_slot_with_policy() takes care of this. |
| 1534 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1535 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 1536 | PSA_KEY_USAGE_EXPORT, 0); |
| 1537 | if (status != PSA_SUCCESS) { |
| 1538 | return status; |
| 1539 | } |
mohammad1603 | 06e7920 | 2018-03-28 13:17:44 +0300 | [diff] [blame] | 1540 | |
Ryan Everett | 45ac526 | 2024-01-08 17:15:19 +0000 | [diff] [blame] | 1541 | LOCAL_OUTPUT_ALLOC(data_external, data_size, data); |
| 1542 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 1543 | status = psa_driver_wrapper_export_key(&slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1544 | slot->key.data, slot->key.bytes, |
| 1545 | data, data_size, data_length); |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1546 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 1547 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Ryan Everett | 45ac526 | 2024-01-08 17:15:19 +0000 | [diff] [blame] | 1548 | exit: |
Ryan Everett | 35f6853 | 2024-01-25 12:02:03 +0000 | [diff] [blame] | 1549 | #endif |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 1550 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1551 | |
Ryan Everett | 45ac526 | 2024-01-08 17:15:19 +0000 | [diff] [blame] | 1552 | LOCAL_OUTPUT_FREE(data_external, data); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1553 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1554 | } |
| 1555 | |
Ronald Cron | 7285cda | 2020-11-26 14:46:37 +0100 | [diff] [blame] | 1556 | psa_status_t psa_export_public_key_internal( |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1557 | const psa_key_attributes_t *attributes, |
| 1558 | const uint8_t *key_buffer, |
| 1559 | size_t key_buffer_size, |
| 1560 | uint8_t *data, |
| 1561 | size_t data_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1562 | size_t *data_length) |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1563 | { |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 1564 | psa_key_type_t type = attributes->type; |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1565 | |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1566 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(type) && |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1567 | (PSA_KEY_TYPE_IS_RSA(type) || PSA_KEY_TYPE_IS_ECC(type) || |
| 1568 | PSA_KEY_TYPE_IS_DH(type))) { |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1569 | /* Exporting public -> public */ |
| 1570 | return psa_export_key_buffer_internal( |
| 1571 | key_buffer, key_buffer_size, |
| 1572 | data, data_size, data_length); |
| 1573 | } else if (PSA_KEY_TYPE_IS_RSA(type)) { |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1574 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT) || \ |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1575 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) |
| 1576 | return mbedtls_psa_rsa_export_public_key(attributes, |
| 1577 | key_buffer, |
| 1578 | key_buffer_size, |
| 1579 | data, |
| 1580 | data_size, |
| 1581 | data_length); |
Darryl Green | 9e2d7a0 | 2018-07-24 16:33:30 +0100 | [diff] [blame] | 1582 | #else |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1583 | /* We don't know how to convert a private RSA key to public. */ |
| 1584 | return PSA_ERROR_NOT_SUPPORTED; |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1585 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 1586 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */ |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1587 | } else if (PSA_KEY_TYPE_IS_ECC(type)) { |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 1588 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_EXPORT) || \ |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1589 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) |
| 1590 | return mbedtls_psa_ecp_export_public_key(attributes, |
| 1591 | key_buffer, |
| 1592 | key_buffer_size, |
| 1593 | data, |
| 1594 | data_size, |
| 1595 | data_length); |
Steven Cooreman | 560c28a | 2020-07-24 23:20:24 +0200 | [diff] [blame] | 1596 | #else |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1597 | /* We don't know how to convert a private ECC key to public */ |
| 1598 | return PSA_ERROR_NOT_SUPPORTED; |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 1599 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_EXPORT) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 1600 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) */ |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1601 | } else if (PSA_KEY_TYPE_IS_DH(type)) { |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 1602 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_EXPORT) || \ |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 1603 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) |
Przemek Stekiel | 152bb46 | 2023-06-01 11:52:39 +0200 | [diff] [blame] | 1604 | return mbedtls_psa_ffdh_export_public_key(attributes, |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1605 | key_buffer, |
| 1606 | key_buffer_size, |
| 1607 | data, data_size, |
| 1608 | data_length); |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 1609 | #else |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 1610 | return PSA_ERROR_NOT_SUPPORTED; |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 1611 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_EXPORT) || |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 1612 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1613 | } else { |
Przemek Stekiel | 0b11ee0 | 2023-05-16 13:26:06 +0200 | [diff] [blame] | 1614 | (void) key_buffer; |
| 1615 | (void) key_buffer_size; |
| 1616 | (void) data; |
| 1617 | (void) data_size; |
| 1618 | (void) data_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1619 | return PSA_ERROR_NOT_SUPPORTED; |
Steven Cooreman | 560c28a | 2020-07-24 23:20:24 +0200 | [diff] [blame] | 1620 | } |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1621 | } |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1622 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1623 | psa_status_t psa_export_public_key(mbedtls_svc_key_id_t key, |
Ryan Everett | b1d2c67 | 2024-01-08 17:19:30 +0000 | [diff] [blame] | 1624 | uint8_t *data_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1625 | size_t data_size, |
| 1626 | size_t *data_length) |
Moran Peker | dd4ea38 | 2018-04-03 15:30:03 +0300 | [diff] [blame] | 1627 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1628 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1629 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 1630 | psa_key_slot_t *slot; |
Darryl Green | dd8fb77 | 2018-11-07 16:00:44 +0000 | [diff] [blame] | 1631 | |
Ryan Everett | b1d2c67 | 2024-01-08 17:19:30 +0000 | [diff] [blame] | 1632 | LOCAL_OUTPUT_DECLARE(data_external, data); |
Darryl Green | dd8fb77 | 2018-11-07 16:00:44 +0000 | [diff] [blame] | 1633 | |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1634 | /* Reject a zero-length output buffer now, since this can never be a |
| 1635 | * valid key representation. This way we know that data must be a valid |
| 1636 | * pointer and we can do things like memset(data, ..., data_size). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1637 | if (data_size == 0) { |
| 1638 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 1639 | } |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1640 | |
Darryl Green | dd8fb77 | 2018-11-07 16:00:44 +0000 | [diff] [blame] | 1641 | /* Set the key to empty now, so that even when there are errors, we always |
| 1642 | * set data_length to a value between 0 and data_size. On error, setting |
| 1643 | * the key to empty is a good choice because an empty key representation is |
| 1644 | * unlikely to be accepted anywhere. */ |
| 1645 | *data_length = 0; |
| 1646 | |
| 1647 | /* Exporting a public key doesn't require a usage flag. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1648 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, 0, 0); |
| 1649 | if (status != PSA_SUCCESS) { |
| 1650 | return status; |
| 1651 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1652 | |
Ryan Everett | b1d2c67 | 2024-01-08 17:19:30 +0000 | [diff] [blame] | 1653 | LOCAL_OUTPUT_ALLOC(data_external, data_size, data); |
| 1654 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1655 | if (!PSA_KEY_TYPE_IS_ASYMMETRIC(slot->attr.type)) { |
| 1656 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 1657 | goto exit; |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1658 | } |
| 1659 | |
Ronald Cron | 6722798 | 2020-11-26 15:16:05 +0100 | [diff] [blame] | 1660 | status = psa_driver_wrapper_export_public_key( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 1661 | &slot->attr, slot->key.data, slot->key.bytes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1662 | data, data_size, data_length); |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1663 | |
| 1664 | exit: |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 1665 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1666 | |
Ryan Everett | b1d2c67 | 2024-01-08 17:19:30 +0000 | [diff] [blame] | 1667 | LOCAL_OUTPUT_FREE(data_external, data); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1668 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Moran Peker | dd4ea38 | 2018-04-03 15:30:03 +0300 | [diff] [blame] | 1669 | } |
| 1670 | |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1671 | /** Validate that a key policy is internally well-formed. |
| 1672 | * |
| 1673 | * This function only rejects invalid policies. It does not validate the |
| 1674 | * consistency of the policy with respect to other attributes of the key |
| 1675 | * such as the key type. |
| 1676 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1677 | static psa_status_t psa_validate_key_policy(const psa_key_policy_t *policy) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1678 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1679 | if ((policy->usage & ~(PSA_KEY_USAGE_EXPORT | |
| 1680 | PSA_KEY_USAGE_COPY | |
| 1681 | PSA_KEY_USAGE_ENCRYPT | |
| 1682 | PSA_KEY_USAGE_DECRYPT | |
| 1683 | PSA_KEY_USAGE_SIGN_MESSAGE | |
| 1684 | PSA_KEY_USAGE_VERIFY_MESSAGE | |
| 1685 | PSA_KEY_USAGE_SIGN_HASH | |
| 1686 | PSA_KEY_USAGE_VERIFY_HASH | |
| 1687 | PSA_KEY_USAGE_VERIFY_DERIVATION | |
| 1688 | PSA_KEY_USAGE_DERIVE)) != 0) { |
| 1689 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1690 | } |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1691 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1692 | return PSA_SUCCESS; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1693 | } |
| 1694 | |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1695 | /** Validate the internal consistency of key attributes. |
| 1696 | * |
| 1697 | * This function only rejects invalid attribute values. If does not |
| 1698 | * validate the consistency of the attributes with any key data that may |
| 1699 | * be involved in the creation of the key. |
| 1700 | * |
| 1701 | * Call this function early in the key creation process. |
| 1702 | * |
| 1703 | * \param[in] attributes Key attributes for the new key. |
| 1704 | * \param[out] p_drv On any return, the driver for the key, if any. |
| 1705 | * NULL for a transparent key. |
| 1706 | * |
| 1707 | */ |
| 1708 | static psa_status_t psa_validate_key_attributes( |
| 1709 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1710 | psa_se_drv_table_entry_t **p_drv) |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1711 | { |
Steven Cooreman | 81fe7c3 | 2020-06-08 18:37:19 +0200 | [diff] [blame] | 1712 | psa_status_t status = PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1713 | psa_key_lifetime_t lifetime = psa_get_key_lifetime(attributes); |
| 1714 | mbedtls_svc_key_id_t key = psa_get_key_id(attributes); |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1715 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1716 | status = psa_validate_key_location(lifetime, p_drv); |
| 1717 | if (status != PSA_SUCCESS) { |
| 1718 | return status; |
Ronald Cron | d2ed481 | 2020-07-17 16:11:30 +0200 | [diff] [blame] | 1719 | } |
| 1720 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1721 | status = psa_validate_key_persistence(lifetime); |
| 1722 | if (status != PSA_SUCCESS) { |
| 1723 | return status; |
| 1724 | } |
| 1725 | |
| 1726 | if (PSA_KEY_LIFETIME_IS_VOLATILE(lifetime)) { |
| 1727 | if (MBEDTLS_SVC_KEY_ID_GET_KEY_ID(key) != 0) { |
| 1728 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1729 | } |
| 1730 | } else { |
| 1731 | if (!psa_is_valid_key_id(psa_get_key_id(attributes), 0)) { |
| 1732 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1733 | } |
| 1734 | } |
| 1735 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 1736 | status = psa_validate_key_policy(&attributes->policy); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1737 | if (status != PSA_SUCCESS) { |
| 1738 | return status; |
| 1739 | } |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1740 | |
| 1741 | /* Refuse to create overly large keys. |
| 1742 | * Note that this doesn't trigger on import if the attributes don't |
| 1743 | * explicitly specify a size (so psa_get_key_bits returns 0), so |
| 1744 | * psa_import_key() needs its own checks. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1745 | if (psa_get_key_bits(attributes) > PSA_MAX_KEY_BITS) { |
| 1746 | return PSA_ERROR_NOT_SUPPORTED; |
| 1747 | } |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1748 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1749 | return PSA_SUCCESS; |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1750 | } |
| 1751 | |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1752 | /** Prepare a key slot to receive key material. |
| 1753 | * |
| 1754 | * This function allocates a key slot and sets its metadata. |
| 1755 | * |
| 1756 | * If this function fails, call psa_fail_key_creation(). |
| 1757 | * |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1758 | * This function is intended to be used as follows: |
| 1759 | * -# Call psa_start_key_creation() to allocate a key slot, prepare |
Ronald Cron | cf56a0a | 2020-08-04 09:51:30 +0200 | [diff] [blame] | 1760 | * it with the specified attributes, and in case of a volatile key assign it |
| 1761 | * a volatile key identifier. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1762 | * -# Populate the slot with the key material. |
| 1763 | * -# Call psa_finish_key_creation() to finalize the creation of the slot. |
| 1764 | * In case of failure at any step, stop the sequence and call |
| 1765 | * psa_fail_key_creation(). |
| 1766 | * |
Ryan Everett | b69118e | 2024-01-02 15:54:32 +0000 | [diff] [blame] | 1767 | * On success, the key slot's state is PSA_SLOT_FILLING. |
| 1768 | * It is the responsibility of the caller to change the slot's state to |
| 1769 | * PSA_SLOT_EMPTY/FULL once key creation has finished. |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1770 | * |
Gilles Peskine | df17914 | 2019-07-15 22:02:14 +0200 | [diff] [blame] | 1771 | * \param method An identification of the calling function. |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1772 | * \param[in] attributes Key attributes for the new key. |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1773 | * \param[out] p_slot On success, a pointer to the prepared slot. |
| 1774 | * \param[out] p_drv On any return, the driver for the key, if any. |
| 1775 | * NULL for a transparent key. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1776 | * |
| 1777 | * \retval #PSA_SUCCESS |
| 1778 | * The key slot is ready to receive key material. |
| 1779 | * \return If this function fails, the key slot is an invalid state. |
| 1780 | * You must call psa_fail_key_creation() to wipe and free the slot. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1781 | */ |
| 1782 | static psa_status_t psa_start_key_creation( |
Gilles Peskine | df17914 | 2019-07-15 22:02:14 +0200 | [diff] [blame] | 1783 | psa_key_creation_method_t method, |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1784 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1785 | psa_key_slot_t **p_slot, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1786 | psa_se_drv_table_entry_t **p_drv) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1787 | { |
| 1788 | psa_status_t status; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1789 | |
Gilles Peskine | df17914 | 2019-07-15 22:02:14 +0200 | [diff] [blame] | 1790 | (void) method; |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1791 | *p_drv = NULL; |
| 1792 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1793 | status = psa_validate_key_attributes(attributes, p_drv); |
| 1794 | if (status != PSA_SUCCESS) { |
| 1795 | return status; |
| 1796 | } |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1797 | |
Gilles Peskine | e8199f5 | 2024-06-10 11:53:33 +0200 | [diff] [blame] | 1798 | int key_is_volatile = PSA_KEY_LIFETIME_IS_VOLATILE(attributes->lifetime); |
| 1799 | psa_key_id_t volatile_key_id; |
| 1800 | |
Ryan Everett | 3d8118d | 2024-01-30 16:58:47 +0000 | [diff] [blame] | 1801 | #if defined(MBEDTLS_THREADING_C) |
| 1802 | PSA_THREADING_CHK_RET(mbedtls_mutex_lock( |
| 1803 | &mbedtls_threading_key_slot_mutex)); |
| 1804 | #endif |
Gilles Peskine | e8199f5 | 2024-06-10 11:53:33 +0200 | [diff] [blame] | 1805 | status = psa_reserve_free_key_slot( |
| 1806 | key_is_volatile ? &volatile_key_id : NULL, |
| 1807 | p_slot); |
Ryan Everett | 3d8118d | 2024-01-30 16:58:47 +0000 | [diff] [blame] | 1808 | #if defined(MBEDTLS_THREADING_C) |
| 1809 | PSA_THREADING_CHK_RET(mbedtls_mutex_unlock( |
| 1810 | &mbedtls_threading_key_slot_mutex)); |
| 1811 | #endif |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1812 | if (status != PSA_SUCCESS) { |
| 1813 | return status; |
| 1814 | } |
Gilles Peskine | e8199f5 | 2024-06-10 11:53:33 +0200 | [diff] [blame] | 1815 | psa_key_slot_t *slot = *p_slot; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1816 | |
Gilles Peskine | 76aa09c | 2019-07-31 14:15:34 +0200 | [diff] [blame] | 1817 | /* We're storing the declared bit-size of the key. It's up to each |
| 1818 | * creation mechanism to verify that this information is correct. |
| 1819 | * It's automatically correct for mechanisms that use the bit-size as |
Gilles Peskine | b46bef2 | 2019-07-30 21:32:04 +0200 | [diff] [blame] | 1820 | * an input (generate, device) but not for those where the bit-size |
Ronald Cron | c4d1b51 | 2020-07-31 11:26:37 +0200 | [diff] [blame] | 1821 | * is optional (import, copy). In case of a volatile key, assign it the |
| 1822 | * volatile key identifier associated to the slot returned to contain its |
| 1823 | * definition. */ |
Gilles Peskine | 76aa09c | 2019-07-31 14:15:34 +0200 | [diff] [blame] | 1824 | |
Gilles Peskine | 7fad3ef | 2024-02-28 01:08:27 +0100 | [diff] [blame] | 1825 | slot->attr = *attributes; |
Gilles Peskine | e8199f5 | 2024-06-10 11:53:33 +0200 | [diff] [blame] | 1826 | if (key_is_volatile) { |
Ronald Cron | c4d1b51 | 2020-07-31 11:26:37 +0200 | [diff] [blame] | 1827 | #if !defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER) |
| 1828 | slot->attr.id = volatile_key_id; |
| 1829 | #else |
| 1830 | slot->attr.id.key_id = volatile_key_id; |
| 1831 | #endif |
| 1832 | } |
Gilles Peskine | c744d99 | 2019-07-30 17:26:54 +0200 | [diff] [blame] | 1833 | |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1834 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 1835 | /* For a key in a secure element, we need to do three things |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1836 | * when creating or registering a persistent key: |
Gilles Peskine | 60450a4 | 2019-07-25 11:32:45 +0200 | [diff] [blame] | 1837 | * create the key file in internal storage, create the |
| 1838 | * key inside the secure element, and update the driver's |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1839 | * persistent data. This is done by starting a transaction that will |
| 1840 | * encompass these three actions. |
| 1841 | * For registering a volatile key, we just need to find an appropriate |
| 1842 | * slot number inside the SE. Since the key is designated volatile, creating |
| 1843 | * a transaction is not required. */ |
Gilles Peskine | 60450a4 | 2019-07-25 11:32:45 +0200 | [diff] [blame] | 1844 | /* The first thing to do is to find a slot number for the new key. |
| 1845 | * We save the slot number in persistent storage as part of the |
| 1846 | * transaction data. It will be needed to recover if the power |
| 1847 | * fails during the key creation process, to clean up on the secure |
| 1848 | * element side after restarting. Obtaining a slot number from the |
| 1849 | * secure element driver updates its persistent state, but we do not yet |
| 1850 | * save the driver's persistent state, so that if the power fails, |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1851 | * we can roll back to a state where the key doesn't exist. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1852 | if (*p_drv != NULL) { |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1853 | psa_key_slot_number_t slot_number; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1854 | status = psa_find_se_slot_for_key(attributes, method, *p_drv, |
| 1855 | &slot_number); |
| 1856 | if (status != PSA_SUCCESS) { |
| 1857 | return status; |
| 1858 | } |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1859 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 1860 | if (!PSA_KEY_LIFETIME_IS_VOLATILE(attributes->lifetime)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1861 | psa_crypto_prepare_transaction(PSA_CRYPTO_TRANSACTION_CREATE_KEY); |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1862 | psa_crypto_transaction.key.lifetime = slot->attr.lifetime; |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1863 | psa_crypto_transaction.key.slot = slot_number; |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1864 | psa_crypto_transaction.key.id = slot->attr.id; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1865 | status = psa_crypto_save_transaction(); |
| 1866 | if (status != PSA_SUCCESS) { |
| 1867 | (void) psa_crypto_stop_transaction(); |
| 1868 | return status; |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1869 | } |
Gilles Peskine | 66be51c | 2019-07-25 18:02:52 +0200 | [diff] [blame] | 1870 | } |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1871 | |
| 1872 | status = psa_copy_key_material_into_slot( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1873 | slot, (uint8_t *) (&slot_number), sizeof(slot_number)); |
Ryan Everett | b5a20d3 | 2023-11-15 16:26:01 +0000 | [diff] [blame] | 1874 | if (status != PSA_SUCCESS) { |
| 1875 | return status; |
| 1876 | } |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1877 | } |
Gilles Peskine | 3efcebb | 2019-10-01 14:18:35 +0200 | [diff] [blame] | 1878 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1879 | if (*p_drv == NULL && method == PSA_KEY_CREATION_REGISTER) { |
Gilles Peskine | 3efcebb | 2019-10-01 14:18:35 +0200 | [diff] [blame] | 1880 | /* Key registration only makes sense with a secure element. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1881 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 3efcebb | 2019-10-01 14:18:35 +0200 | [diff] [blame] | 1882 | } |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1883 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1884 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1885 | return PSA_SUCCESS; |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1886 | } |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1887 | |
| 1888 | /** Finalize the creation of a key once its key material has been set. |
| 1889 | * |
| 1890 | * This entails writing the key to persistent storage. |
| 1891 | * |
| 1892 | * If this function fails, call psa_fail_key_creation(). |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1893 | * See the documentation of psa_start_key_creation() for the intended use |
| 1894 | * of this function. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1895 | * |
Ryan Everett | b69118e | 2024-01-02 15:54:32 +0000 | [diff] [blame] | 1896 | * If the finalization succeeds, the function sets the key slot's state to |
| 1897 | * PSA_SLOT_FULL, and the key slot can no longer be accessed as part of the |
| 1898 | * key creation process. |
Ronald Cron | 5097294 | 2020-11-14 11:28:25 +0100 | [diff] [blame] | 1899 | * |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1900 | * \param[in,out] slot Pointer to the slot with key material. |
| 1901 | * \param[in] driver The secure element driver for the key, |
| 1902 | * or NULL for a transparent key. |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1903 | * \param[out] key On success, identifier of the key. Note that the |
| 1904 | * key identifier is also stored in the key slot. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1905 | * |
| 1906 | * \retval #PSA_SUCCESS |
Ronald Cron | cf56a0a | 2020-08-04 09:51:30 +0200 | [diff] [blame] | 1907 | * The key was successfully created. |
Gilles Peskine | ed73355 | 2023-02-14 19:21:09 +0100 | [diff] [blame] | 1908 | * \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription |
| 1909 | * \retval #PSA_ERROR_INSUFFICIENT_STORAGE \emptydescription |
| 1910 | * \retval #PSA_ERROR_ALREADY_EXISTS \emptydescription |
| 1911 | * \retval #PSA_ERROR_DATA_INVALID \emptydescription |
| 1912 | * \retval #PSA_ERROR_DATA_CORRUPT \emptydescription |
| 1913 | * \retval #PSA_ERROR_STORAGE_FAILURE \emptydescription |
gabor-mezei-arm | 452b0a3 | 2020-11-09 17:42:55 +0100 | [diff] [blame] | 1914 | * |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1915 | * \return If this function fails, the key slot is an invalid state. |
| 1916 | * You must call psa_fail_key_creation() to wipe and free the slot. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1917 | */ |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1918 | static psa_status_t psa_finish_key_creation( |
| 1919 | psa_key_slot_t *slot, |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1920 | psa_se_drv_table_entry_t *driver, |
| 1921 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1922 | { |
| 1923 | psa_status_t status = PSA_SUCCESS; |
Gilles Peskine | 30afafd | 2019-04-25 13:47:40 +0200 | [diff] [blame] | 1924 | (void) slot; |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1925 | (void) driver; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1926 | |
Ryan Everett | 91ffe5b | 2024-01-23 20:05:42 +0000 | [diff] [blame] | 1927 | #if defined(MBEDTLS_THREADING_C) |
| 1928 | PSA_THREADING_CHK_RET(mbedtls_mutex_lock( |
| 1929 | &mbedtls_threading_key_slot_mutex)); |
| 1930 | #endif |
| 1931 | |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1932 | #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1933 | if (!PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) { |
Gilles Peskine | 1df83d4 | 2019-07-23 16:13:14 +0200 | [diff] [blame] | 1934 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1935 | if (driver != NULL) { |
Gilles Peskine | b46bef2 | 2019-07-30 21:32:04 +0200 | [diff] [blame] | 1936 | psa_se_key_data_storage_t data; |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1937 | psa_key_slot_number_t slot_number = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1938 | psa_key_slot_get_slot_number(slot); |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1939 | |
Tom Cosgrove | 6ef9bb3 | 2023-03-08 14:19:51 +0000 | [diff] [blame] | 1940 | MBEDTLS_STATIC_ASSERT(sizeof(slot_number) == |
| 1941 | sizeof(data.slot_number), |
| 1942 | "Slot number size does not match psa_se_key_data_storage_t"); |
| 1943 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1944 | memcpy(&data.slot_number, &slot_number, sizeof(slot_number)); |
| 1945 | status = psa_save_persistent_key(&slot->attr, |
| 1946 | (uint8_t *) &data, |
| 1947 | sizeof(data)); |
| 1948 | } else |
Gilles Peskine | 1df83d4 | 2019-07-23 16:13:14 +0200 | [diff] [blame] | 1949 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1950 | { |
Steven Cooreman | 40120f6 | 2020-10-29 11:42:22 +0100 | [diff] [blame] | 1951 | /* Key material is saved in export representation in the slot, so |
| 1952 | * just pass the slot buffer for storage. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1953 | status = psa_save_persistent_key(&slot->attr, |
| 1954 | slot->key.data, |
| 1955 | slot->key.bytes); |
Gilles Peskine | 1df83d4 | 2019-07-23 16:13:14 +0200 | [diff] [blame] | 1956 | } |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1957 | } |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1958 | #endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */ |
| 1959 | |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1960 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 1961 | /* Finish the transaction for a key creation. This does not |
| 1962 | * happen when registering an existing key. Detect this case |
| 1963 | * by checking whether a transaction is in progress (actual |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1964 | * creation of a persistent key in a secure element requires a transaction, |
| 1965 | * but registration or volatile key creation doesn't use one). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1966 | if (driver != NULL && |
| 1967 | psa_crypto_transaction.unknown.type == PSA_CRYPTO_TRANSACTION_CREATE_KEY) { |
| 1968 | status = psa_save_se_persistent_data(driver); |
| 1969 | if (status != PSA_SUCCESS) { |
| 1970 | psa_destroy_persistent_key(slot->attr.id); |
Ryan Everett | 91ffe5b | 2024-01-23 20:05:42 +0000 | [diff] [blame] | 1971 | |
| 1972 | #if defined(MBEDTLS_THREADING_C) |
| 1973 | PSA_THREADING_CHK_RET(mbedtls_mutex_unlock( |
| 1974 | &mbedtls_threading_key_slot_mutex)); |
| 1975 | #endif |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1976 | return status; |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1977 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1978 | status = psa_crypto_stop_transaction(); |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1979 | } |
| 1980 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1981 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1982 | if (status == PSA_SUCCESS) { |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1983 | *key = slot->attr.id; |
Ryan Everett | b69118e | 2024-01-02 15:54:32 +0000 | [diff] [blame] | 1984 | status = psa_key_slot_state_transition(slot, PSA_SLOT_FILLING, |
| 1985 | PSA_SLOT_FULL); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1986 | if (status != PSA_SUCCESS) { |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1987 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1988 | } |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1989 | } |
Ronald Cron | 5097294 | 2020-11-14 11:28:25 +0100 | [diff] [blame] | 1990 | |
Ryan Everett | 91ffe5b | 2024-01-23 20:05:42 +0000 | [diff] [blame] | 1991 | #if defined(MBEDTLS_THREADING_C) |
| 1992 | PSA_THREADING_CHK_RET(mbedtls_mutex_unlock( |
| 1993 | &mbedtls_threading_key_slot_mutex)); |
| 1994 | #endif |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1995 | return status; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1996 | } |
| 1997 | |
| 1998 | /** Abort the creation of a key. |
| 1999 | * |
| 2000 | * You may call this function after calling psa_start_key_creation(), |
| 2001 | * or after psa_finish_key_creation() fails. In other circumstances, this |
| 2002 | * function may not clean up persistent storage. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 2003 | * See the documentation of psa_start_key_creation() for the intended use |
Ryan Everett | b69118e | 2024-01-02 15:54:32 +0000 | [diff] [blame] | 2004 | * of this function. Sets the slot's state to PSA_SLOT_EMPTY. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2005 | * |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 2006 | * \param[in,out] slot Pointer to the slot with key material. |
| 2007 | * \param[in] driver The secure element driver for the key, |
| 2008 | * or NULL for a transparent key. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2009 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2010 | static void psa_fail_key_creation(psa_key_slot_t *slot, |
| 2011 | psa_se_drv_table_entry_t *driver) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2012 | { |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 2013 | (void) driver; |
| 2014 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2015 | if (slot == NULL) { |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2016 | return; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2017 | } |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 2018 | |
Ryan Everett | b710144 | 2024-01-23 20:09:49 +0000 | [diff] [blame] | 2019 | #if defined(MBEDTLS_THREADING_C) |
Ryan Everett | 73feaf2 | 2024-02-14 11:36:41 +0000 | [diff] [blame] | 2020 | /* If the lock operation fails we still wipe the slot. |
| 2021 | * Operations will no longer work after a failed lock, |
| 2022 | * but we still need to wipe the slot of confidential data. */ |
Ryan Everett | b710144 | 2024-01-23 20:09:49 +0000 | [diff] [blame] | 2023 | mbedtls_mutex_lock(&mbedtls_threading_key_slot_mutex); |
| 2024 | #endif |
| 2025 | |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 2026 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Janos Follath | 1d57a20 | 2019-08-13 12:15:34 +0100 | [diff] [blame] | 2027 | /* TODO: If the key has already been created in the secure |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 2028 | * element, and the failure happened later (when saving metadata |
| 2029 | * to internal storage), we need to destroy the key in the secure |
Gilles Peskine | c9d7f94 | 2019-08-13 16:17:16 +0200 | [diff] [blame] | 2030 | * element. |
| 2031 | * https://github.com/ARMmbed/mbed-crypto/issues/217 |
| 2032 | */ |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 2033 | |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2034 | /* Abort the ongoing transaction if any (there may not be one if |
| 2035 | * the creation process failed before starting one, or if the |
| 2036 | * key creation is a registration of a key in a secure element). |
| 2037 | * Earlier functions must already have done what it takes to undo any |
| 2038 | * partial creation. All that's left is to update the transaction data |
| 2039 | * itself. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2040 | (void) psa_crypto_stop_transaction(); |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 2041 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 2042 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2043 | psa_wipe_key_slot(slot); |
Ryan Everett | b710144 | 2024-01-23 20:09:49 +0000 | [diff] [blame] | 2044 | |
| 2045 | #if defined(MBEDTLS_THREADING_C) |
| 2046 | mbedtls_mutex_unlock(&mbedtls_threading_key_slot_mutex); |
| 2047 | #endif |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2048 | } |
| 2049 | |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 2050 | /** Validate optional attributes during key creation. |
| 2051 | * |
| 2052 | * Some key attributes are optional during key creation. If they are |
| 2053 | * specified in the attributes structure, check that they are consistent |
| 2054 | * with the data in the slot. |
| 2055 | * |
| 2056 | * This function should be called near the end of key creation, after |
| 2057 | * the slot in memory is fully populated but before saving persistent data. |
| 2058 | */ |
| 2059 | static psa_status_t psa_validate_optional_attributes( |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2060 | const psa_key_slot_t *slot, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2061 | const psa_key_attributes_t *attributes) |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2062 | { |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 2063 | if (attributes->type != 0) { |
| 2064 | if (attributes->type != slot->attr.type) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2065 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2066 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2067 | } |
| 2068 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 2069 | if (attributes->bits != 0) { |
| 2070 | if (attributes->bits != slot->attr.bits) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2071 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2072 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2073 | } |
| 2074 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2075 | return PSA_SUCCESS; |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2076 | } |
| 2077 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2078 | psa_status_t psa_import_key(const psa_key_attributes_t *attributes, |
Ryan Everett | f028fe1 | 2024-01-08 17:14:44 +0000 | [diff] [blame] | 2079 | const uint8_t *data_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2080 | size_t data_length, |
| 2081 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2082 | { |
| 2083 | psa_status_t status; |
Ryan Everett | f028fe1 | 2024-01-08 17:14:44 +0000 | [diff] [blame] | 2084 | LOCAL_INPUT_DECLARE(data_external, data); |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2085 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 2086 | psa_se_drv_table_entry_t *driver = NULL; |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2087 | size_t bits; |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 2088 | size_t storage_size = data_length; |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2089 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 2090 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
| 2091 | |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 2092 | /* Reject zero-length symmetric keys (including raw data key objects). |
| 2093 | * This also rejects any key which might be encoded as an empty string, |
| 2094 | * which is never valid. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2095 | if (data_length == 0) { |
| 2096 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2097 | } |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 2098 | |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2099 | /* Ensure that the bytes-to-bits conversion cannot overflow. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2100 | if (data_length > SIZE_MAX / 8) { |
| 2101 | return PSA_ERROR_NOT_SUPPORTED; |
| 2102 | } |
Archana | 6ed4bda | 2021-08-04 10:47:15 +0530 | [diff] [blame] | 2103 | |
Ryan Everett | f028fe1 | 2024-01-08 17:14:44 +0000 | [diff] [blame] | 2104 | LOCAL_INPUT_ALLOC(data_external, data_length, data); |
| 2105 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2106 | status = psa_start_key_creation(PSA_KEY_CREATION_IMPORT, attributes, |
| 2107 | &slot, &driver); |
| 2108 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2109 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2110 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2111 | |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2112 | /* In the case of a transparent key or an opaque key stored in local |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2113 | * storage ( thus not in the case of importing a key in a secure element |
| 2114 | * with storage ( MBEDTLS_PSA_CRYPTO_SE_C ) ),we have to allocate a |
| 2115 | * buffer to hold the imported key material. */ |
Valerio Setti | 8d4f150 | 2024-06-14 07:49:05 +0200 | [diff] [blame] | 2116 | #if defined(MBEDTLS_PSA_STATIC_KEY_SLOTS) |
| 2117 | int is_slot_unused = (slot->key.in_use == 0); |
| 2118 | #else |
| 2119 | int is_slot_unused = (slot->key.data == NULL); |
| 2120 | #endif |
| 2121 | |
| 2122 | if (is_slot_unused) { |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 2123 | if (psa_key_lifetime_is_external(attributes->lifetime)) { |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2124 | status = psa_driver_wrapper_get_key_buffer_size_from_key_data( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2125 | attributes, data, data_length, &storage_size); |
| 2126 | if (status != PSA_SUCCESS) { |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 2127 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2128 | } |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 2129 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2130 | status = psa_allocate_buffer_to_slot(slot, storage_size); |
| 2131 | if (status != PSA_SUCCESS) { |
Gilles Peskine | b46bef2 | 2019-07-30 21:32:04 +0200 | [diff] [blame] | 2132 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2133 | } |
Gilles Peskine | 5d30967 | 2019-07-12 23:47:28 +0200 | [diff] [blame] | 2134 | } |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2135 | |
| 2136 | bits = slot->attr.bits; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2137 | status = psa_driver_wrapper_import_key(attributes, |
| 2138 | data, data_length, |
| 2139 | slot->key.data, |
| 2140 | slot->key.bytes, |
| 2141 | &slot->key.bytes, &bits); |
| 2142 | if (status != PSA_SUCCESS) { |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2143 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2144 | } |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2145 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2146 | if (slot->attr.bits == 0) { |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2147 | slot->attr.bits = (psa_key_bits_t) bits; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2148 | } else if (bits != slot->attr.bits) { |
Steven Cooreman | ac3434f | 2021-01-15 17:36:02 +0100 | [diff] [blame] | 2149 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 2150 | goto exit; |
Gilles Peskine | 5d30967 | 2019-07-12 23:47:28 +0200 | [diff] [blame] | 2151 | } |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 2152 | |
Archana | 6ed4bda | 2021-08-04 10:47:15 +0530 | [diff] [blame] | 2153 | /* Enforce a size limit, and in particular ensure that the bit |
| 2154 | * size fits in its representation type.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2155 | if (bits > PSA_MAX_KEY_BITS) { |
Archana | 6ed4bda | 2021-08-04 10:47:15 +0530 | [diff] [blame] | 2156 | status = PSA_ERROR_NOT_SUPPORTED; |
| 2157 | goto exit; |
| 2158 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2159 | status = psa_validate_optional_attributes(slot, attributes); |
| 2160 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 1801740 | 2019-07-24 20:25:59 +0200 | [diff] [blame] | 2161 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2162 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2163 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2164 | status = psa_finish_key_creation(slot, driver, key); |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2165 | exit: |
Ryan Everett | f028fe1 | 2024-01-08 17:14:44 +0000 | [diff] [blame] | 2166 | LOCAL_INPUT_FREE(data_external, data); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2167 | if (status != PSA_SUCCESS) { |
| 2168 | psa_fail_key_creation(slot, driver); |
| 2169 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2170 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2171 | return status; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2172 | } |
| 2173 | |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2174 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
| 2175 | psa_status_t mbedtls_psa_register_se_key( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2176 | const psa_key_attributes_t *attributes) |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2177 | { |
| 2178 | psa_status_t status; |
| 2179 | psa_key_slot_t *slot = NULL; |
| 2180 | psa_se_drv_table_entry_t *driver = NULL; |
Ronald Cron | cf56a0a | 2020-08-04 09:51:30 +0200 | [diff] [blame] | 2181 | mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT; |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2182 | |
| 2183 | /* Leaving attributes unspecified is not currently supported. |
| 2184 | * It could make sense to query the key type and size from the |
| 2185 | * secure element, but not all secure elements support this |
| 2186 | * and the driver HAL doesn't currently support it. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2187 | if (psa_get_key_type(attributes) == PSA_KEY_TYPE_NONE) { |
| 2188 | return PSA_ERROR_NOT_SUPPORTED; |
| 2189 | } |
| 2190 | if (psa_get_key_bits(attributes) == 0) { |
| 2191 | return PSA_ERROR_NOT_SUPPORTED; |
| 2192 | } |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2193 | |
Gilles Peskine | d72ad73 | 2024-06-13 16:06:45 +0200 | [diff] [blame] | 2194 | /* Not usable with volatile keys, even with an appropriate location, |
| 2195 | * due to the API design. |
| 2196 | * https://github.com/Mbed-TLS/mbedtls/issues/9253 |
| 2197 | */ |
| 2198 | if (PSA_KEY_LIFETIME_IS_VOLATILE(psa_get_key_lifetime(attributes))) { |
| 2199 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2200 | } |
| 2201 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2202 | status = psa_start_key_creation(PSA_KEY_CREATION_REGISTER, attributes, |
| 2203 | &slot, &driver); |
| 2204 | if (status != PSA_SUCCESS) { |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2205 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2206 | } |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2207 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2208 | status = psa_finish_key_creation(slot, driver, &key); |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2209 | |
| 2210 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2211 | if (status != PSA_SUCCESS) { |
| 2212 | psa_fail_key_creation(slot, driver); |
| 2213 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2214 | |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2215 | /* Registration doesn't keep the key in RAM. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2216 | psa_close_key(key); |
| 2217 | return status; |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2218 | } |
| 2219 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 2220 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2221 | psa_status_t psa_copy_key(mbedtls_svc_key_id_t source_key, |
| 2222 | const psa_key_attributes_t *specified_attributes, |
| 2223 | mbedtls_svc_key_id_t *target_key) |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2224 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2225 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 2226 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2227 | psa_key_slot_t *source_slot = NULL; |
| 2228 | psa_key_slot_t *target_slot = NULL; |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2229 | psa_key_attributes_t actual_attributes = *specified_attributes; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 2230 | psa_se_drv_table_entry_t *driver = NULL; |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2231 | size_t storage_size = 0; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2232 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 2233 | *target_key = MBEDTLS_SVC_KEY_ID_INIT; |
| 2234 | |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2235 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2236 | source_key, &source_slot, PSA_KEY_USAGE_COPY, 0); |
| 2237 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2238 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2239 | } |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2240 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2241 | status = psa_validate_optional_attributes(source_slot, |
| 2242 | specified_attributes); |
| 2243 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2244 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2245 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2246 | |
Archana | 9d17bf4 | 2021-09-10 06:22:44 +0530 | [diff] [blame] | 2247 | /* The target key type and number of bits have been validated by |
| 2248 | * psa_validate_optional_attributes() to be either equal to zero or |
| 2249 | * equal to the ones of the source key. So it is safe to inherit |
| 2250 | * them from the source key now." |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2251 | * */ |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 2252 | actual_attributes.bits = source_slot->attr.bits; |
| 2253 | actual_attributes.type = source_slot->attr.type; |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2254 | |
| 2255 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2256 | status = psa_restrict_key_policy(source_slot->attr.type, |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 2257 | &actual_attributes.policy, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2258 | &source_slot->attr.policy); |
| 2259 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2260 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2261 | } |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2262 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2263 | status = psa_start_key_creation(PSA_KEY_CREATION_COPY, &actual_attributes, |
| 2264 | &target_slot, &driver); |
| 2265 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2266 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2267 | } |
| 2268 | if (PSA_KEY_LIFETIME_GET_LOCATION(target_slot->attr.lifetime) != |
| 2269 | PSA_KEY_LIFETIME_GET_LOCATION(source_slot->attr.lifetime)) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2270 | /* |
Archana | 9d17bf4 | 2021-09-10 06:22:44 +0530 | [diff] [blame] | 2271 | * If the source and target keys are stored in different locations, |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2272 | * the source key would need to be exported as plaintext and re-imported |
| 2273 | * in the other location. This has security implications which have not |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2274 | * been fully mapped. For now, this can be achieved through |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2275 | * appropriate API invocations from the application, if needed. |
| 2276 | * */ |
Gilles Peskine | f4ee662 | 2019-07-24 13:44:30 +0200 | [diff] [blame] | 2277 | status = PSA_ERROR_NOT_SUPPORTED; |
| 2278 | goto exit; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2279 | } |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2280 | /* |
| 2281 | * When the source and target keys are within the same location, |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2282 | * - For transparent keys it is a blind copy without any driver invocation, |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2283 | * - For opaque keys this translates to an invocation of the drivers' |
| 2284 | * copy_key entry point through the dispatch layer. |
| 2285 | * */ |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 2286 | if (psa_key_lifetime_is_external(actual_attributes.lifetime)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2287 | status = psa_driver_wrapper_get_key_buffer_size(&actual_attributes, |
| 2288 | &storage_size); |
| 2289 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2290 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2291 | } |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2292 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2293 | status = psa_allocate_buffer_to_slot(target_slot, storage_size); |
| 2294 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2295 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2296 | } |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2297 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2298 | status = psa_driver_wrapper_copy_key(&actual_attributes, |
| 2299 | source_slot->key.data, |
| 2300 | source_slot->key.bytes, |
| 2301 | target_slot->key.data, |
| 2302 | target_slot->key.bytes, |
| 2303 | &target_slot->key.bytes); |
| 2304 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2305 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2306 | } |
| 2307 | } else { |
| 2308 | status = psa_copy_key_material_into_slot(target_slot, |
Archana | 9d17bf4 | 2021-09-10 06:22:44 +0530 | [diff] [blame] | 2309 | source_slot->key.data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2310 | source_slot->key.bytes); |
| 2311 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2312 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2313 | } |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2314 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2315 | status = psa_finish_key_creation(target_slot, driver, target_key); |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2316 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2317 | if (status != PSA_SUCCESS) { |
| 2318 | psa_fail_key_creation(target_slot, driver); |
| 2319 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2320 | |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 2321 | unlock_status = psa_unregister_read_under_mutex(source_slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2322 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2323 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2324 | } |
| 2325 | |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 2326 | |
| 2327 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 2328 | /****************************************************************/ |
Gilles Peskine | 20035e3 | 2018-02-03 22:44:14 +0100 | [diff] [blame] | 2329 | /* Message digests */ |
| 2330 | /****************************************************************/ |
| 2331 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2332 | psa_status_t psa_hash_abort(psa_hash_operation_t *operation) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2333 | { |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2334 | /* Aborting a non-active operation is allowed */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2335 | if (operation->id == 0) { |
| 2336 | return PSA_SUCCESS; |
| 2337 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2338 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2339 | psa_status_t status = psa_driver_wrapper_hash_abort(operation); |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2340 | operation->id = 0; |
| 2341 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2342 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2343 | } |
| 2344 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2345 | psa_status_t psa_hash_setup(psa_hash_operation_t *operation, |
| 2346 | psa_algorithm_t alg) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2347 | { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2348 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2349 | |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2350 | /* A context must be freshly initialized before it can be set up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2351 | if (operation->id != 0) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2352 | status = PSA_ERROR_BAD_STATE; |
| 2353 | goto exit; |
| 2354 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2355 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2356 | if (!PSA_ALG_IS_HASH(alg)) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2357 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 2358 | goto exit; |
| 2359 | } |
Jaeden Amero | 36ee5d0 | 2019-02-19 09:25:10 +0000 | [diff] [blame] | 2360 | |
Steven Cooreman | b6bf4bb | 2021-03-15 19:00:14 +0100 | [diff] [blame] | 2361 | /* Ensure all of the context is zeroized, since PSA_HASH_OPERATION_INIT only |
| 2362 | * directly zeroes the int-sized dummy member of the context union. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2363 | memset(&operation->ctx, 0, sizeof(operation->ctx)); |
Steven Cooreman | 893232f | 2021-03-15 12:23:37 +0100 | [diff] [blame] | 2364 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2365 | status = psa_driver_wrapper_hash_setup(operation, alg); |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2366 | |
| 2367 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2368 | if (status != PSA_SUCCESS) { |
| 2369 | psa_hash_abort(operation); |
| 2370 | } |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2371 | |
| 2372 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2373 | } |
| 2374 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2375 | psa_status_t psa_hash_update(psa_hash_operation_t *operation, |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2376 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2377 | size_t input_length) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2378 | { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2379 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2380 | LOCAL_INPUT_DECLARE(input_external, input); |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2381 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2382 | if (operation->id == 0) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2383 | status = PSA_ERROR_BAD_STATE; |
| 2384 | goto exit; |
| 2385 | } |
Gilles Peskine | 94e4454 | 2018-07-12 16:58:43 +0200 | [diff] [blame] | 2386 | |
Steven Cooreman | c828835 | 2021-03-04 14:02:19 +0100 | [diff] [blame] | 2387 | /* Don't require hash implementations to behave correctly on a |
| 2388 | * zero-length input, which may have an invalid pointer. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2389 | if (input_length == 0) { |
| 2390 | return PSA_SUCCESS; |
| 2391 | } |
Steven Cooreman | c828835 | 2021-03-04 14:02:19 +0100 | [diff] [blame] | 2392 | |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2393 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2394 | status = psa_driver_wrapper_hash_update(operation, input, input_length); |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2395 | |
| 2396 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2397 | if (status != PSA_SUCCESS) { |
| 2398 | psa_hash_abort(operation); |
| 2399 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2400 | |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2401 | LOCAL_INPUT_FREE(input_external, input); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2402 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2403 | } |
| 2404 | |
Thomas Daubney | 31d8c0b | 2024-01-18 15:26:59 +0000 | [diff] [blame] | 2405 | static psa_status_t psa_hash_finish_internal(psa_hash_operation_t *operation, |
Thomas Daubney | d241156 | 2024-01-25 17:25:07 +0000 | [diff] [blame] | 2406 | uint8_t *hash, |
| 2407 | size_t hash_size, |
| 2408 | size_t *hash_length) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2409 | { |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2410 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2411 | |
Steven Cooreman | fbe0928 | 2021-03-08 18:41:12 +0100 | [diff] [blame] | 2412 | *hash_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2413 | if (operation->id == 0) { |
| 2414 | return PSA_ERROR_BAD_STATE; |
| 2415 | } |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2416 | |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2417 | status = psa_driver_wrapper_hash_finish( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2418 | operation, hash, hash_size, hash_length); |
| 2419 | psa_hash_abort(operation); |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2420 | |
| 2421 | return status; |
| 2422 | } |
| 2423 | |
| 2424 | psa_status_t psa_hash_finish(psa_hash_operation_t *operation, |
| 2425 | uint8_t *hash_external, |
| 2426 | size_t hash_size, |
| 2427 | size_t *hash_length) |
| 2428 | { |
| 2429 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2430 | LOCAL_OUTPUT_DECLARE(hash_external, hash); |
| 2431 | |
| 2432 | LOCAL_OUTPUT_ALLOC(hash_external, hash_size, hash); |
| 2433 | status = psa_hash_finish_internal(operation, hash, hash_size, hash_length); |
| 2434 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 2435 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2436 | exit: |
Thomas Daubney | dedd100 | 2024-01-25 16:52:50 +0000 | [diff] [blame] | 2437 | #endif |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2438 | LOCAL_OUTPUT_FREE(hash_external, hash); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2439 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2440 | } |
| 2441 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2442 | psa_status_t psa_hash_verify(psa_hash_operation_t *operation, |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2443 | const uint8_t *hash_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2444 | size_t hash_length) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2445 | { |
Ronald Cron | 69a6342 | 2021-10-18 09:47:58 +0200 | [diff] [blame] | 2446 | uint8_t actual_hash[PSA_HASH_MAX_SIZE]; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2447 | size_t actual_hash_length; |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2448 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2449 | LOCAL_INPUT_DECLARE(hash_external, hash); |
| 2450 | |
| 2451 | status = psa_hash_finish_internal( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2452 | operation, |
| 2453 | actual_hash, sizeof(actual_hash), |
| 2454 | &actual_hash_length); |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2455 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2456 | if (status != PSA_SUCCESS) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2457 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2458 | } |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2459 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2460 | if (actual_hash_length != hash_length) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2461 | status = PSA_ERROR_INVALID_SIGNATURE; |
| 2462 | goto exit; |
| 2463 | } |
| 2464 | |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2465 | LOCAL_INPUT_ALLOC(hash_external, hash_length, hash); |
Dave Rodgman | 7870115 | 2023-08-29 14:20:18 +0100 | [diff] [blame] | 2466 | if (mbedtls_ct_memcmp(hash, actual_hash, actual_hash_length) != 0) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2467 | status = PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2468 | } |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2469 | |
| 2470 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2471 | mbedtls_platform_zeroize(actual_hash, sizeof(actual_hash)); |
| 2472 | if (status != PSA_SUCCESS) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2473 | psa_hash_abort(operation); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2474 | } |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2475 | LOCAL_INPUT_FREE(hash_external, hash); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2476 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2477 | } |
| 2478 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2479 | psa_status_t psa_hash_compute(psa_algorithm_t alg, |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2480 | const uint8_t *input_external, size_t input_length, |
| 2481 | uint8_t *hash_external, size_t hash_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2482 | size_t *hash_length) |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2483 | { |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2484 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2485 | LOCAL_INPUT_DECLARE(input_external, input); |
| 2486 | LOCAL_OUTPUT_DECLARE(hash_external, hash); |
| 2487 | |
Steven Cooreman | fbe0928 | 2021-03-08 18:41:12 +0100 | [diff] [blame] | 2488 | *hash_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2489 | if (!PSA_ALG_IS_HASH(alg)) { |
| 2490 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2491 | } |
Steven Cooreman | f66d5fd | 2021-03-08 18:40:40 +0100 | [diff] [blame] | 2492 | |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2493 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 2494 | LOCAL_OUTPUT_ALLOC(hash_external, hash_size, hash); |
| 2495 | status = psa_driver_wrapper_hash_compute(alg, input, input_length, |
Thomas Daubney | d241156 | 2024-01-25 17:25:07 +0000 | [diff] [blame] | 2496 | hash, hash_size, hash_length); |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2497 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 2498 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2499 | exit: |
Thomas Daubney | dedd100 | 2024-01-25 16:52:50 +0000 | [diff] [blame] | 2500 | #endif |
Thomas Daubney | 1c5118e | 2024-01-12 16:50:26 +0000 | [diff] [blame] | 2501 | LOCAL_INPUT_FREE(input_external, input); |
| 2502 | LOCAL_OUTPUT_FREE(hash_external, hash); |
| 2503 | return status; |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2504 | } |
| 2505 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2506 | psa_status_t psa_hash_compare(psa_algorithm_t alg, |
Thomas Daubney | 51ffac9 | 2024-01-18 15:46:26 +0000 | [diff] [blame] | 2507 | const uint8_t *input_external, size_t input_length, |
| 2508 | const uint8_t *hash_external, size_t hash_length) |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2509 | { |
Ronald Cron | 69a6342 | 2021-10-18 09:47:58 +0200 | [diff] [blame] | 2510 | uint8_t actual_hash[PSA_HASH_MAX_SIZE]; |
Steven Cooreman | 84d670d | 2021-02-18 16:22:53 +0100 | [diff] [blame] | 2511 | size_t actual_hash_length; |
Thomas Daubney | 51ffac9 | 2024-01-18 15:46:26 +0000 | [diff] [blame] | 2512 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2513 | |
| 2514 | LOCAL_INPUT_DECLARE(input_external, input); |
| 2515 | LOCAL_INPUT_DECLARE(hash_external, hash); |
Steven Cooreman | f66d5fd | 2021-03-08 18:40:40 +0100 | [diff] [blame] | 2516 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2517 | if (!PSA_ALG_IS_HASH(alg)) { |
Thomas Daubney | 51ffac9 | 2024-01-18 15:46:26 +0000 | [diff] [blame] | 2518 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 2519 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2520 | } |
Steven Cooreman | f66d5fd | 2021-03-08 18:40:40 +0100 | [diff] [blame] | 2521 | |
Thomas Daubney | 51ffac9 | 2024-01-18 15:46:26 +0000 | [diff] [blame] | 2522 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 2523 | status = psa_driver_wrapper_hash_compute( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2524 | alg, input, input_length, |
| 2525 | actual_hash, sizeof(actual_hash), |
| 2526 | &actual_hash_length); |
| 2527 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2528 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2529 | } |
| 2530 | if (actual_hash_length != hash_length) { |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2531 | status = PSA_ERROR_INVALID_SIGNATURE; |
| 2532 | goto exit; |
| 2533 | } |
Thomas Daubney | 51ffac9 | 2024-01-18 15:46:26 +0000 | [diff] [blame] | 2534 | |
| 2535 | LOCAL_INPUT_ALLOC(hash_external, hash_length, hash); |
Dave Rodgman | 7870115 | 2023-08-29 14:20:18 +0100 | [diff] [blame] | 2536 | if (mbedtls_ct_memcmp(hash, actual_hash, actual_hash_length) != 0) { |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2537 | status = PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2538 | } |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2539 | |
| 2540 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2541 | mbedtls_platform_zeroize(actual_hash, sizeof(actual_hash)); |
Thomas Daubney | 51ffac9 | 2024-01-18 15:46:26 +0000 | [diff] [blame] | 2542 | |
| 2543 | LOCAL_INPUT_FREE(input_external, input); |
| 2544 | LOCAL_INPUT_FREE(hash_external, hash); |
| 2545 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2546 | return status; |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2547 | } |
| 2548 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2549 | psa_status_t psa_hash_clone(const psa_hash_operation_t *source_operation, |
| 2550 | psa_hash_operation_t *target_operation) |
Gilles Peskine | ebb2c3e | 2019-01-19 12:03:41 +0100 | [diff] [blame] | 2551 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2552 | if (source_operation->id == 0 || |
| 2553 | target_operation->id != 0) { |
| 2554 | return PSA_ERROR_BAD_STATE; |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2555 | } |
Gilles Peskine | ebb2c3e | 2019-01-19 12:03:41 +0100 | [diff] [blame] | 2556 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2557 | psa_status_t status = psa_driver_wrapper_hash_clone(source_operation, |
| 2558 | target_operation); |
| 2559 | if (status != PSA_SUCCESS) { |
| 2560 | psa_hash_abort(target_operation); |
| 2561 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2562 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2563 | return status; |
Gilles Peskine | ebb2c3e | 2019-01-19 12:03:41 +0100 | [diff] [blame] | 2564 | } |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2565 | |
| 2566 | |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2567 | /****************************************************************/ |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2568 | /* MAC */ |
| 2569 | /****************************************************************/ |
| 2570 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2571 | psa_status_t psa_mac_abort(psa_mac_operation_t *operation) |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2572 | { |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2573 | /* Aborting a non-active operation is allowed */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2574 | if (operation->id == 0) { |
| 2575 | return PSA_SUCCESS; |
| 2576 | } |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2577 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2578 | psa_status_t status = psa_driver_wrapper_mac_abort(operation); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2579 | operation->mac_size = 0; |
| 2580 | operation->is_sign = 0; |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2581 | operation->id = 0; |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2582 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2583 | return status; |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2584 | } |
| 2585 | |
Ronald Cron | 2dff3b2 | 2021-06-17 16:33:22 +0200 | [diff] [blame] | 2586 | static psa_status_t psa_mac_finalize_alg_and_key_validation( |
| 2587 | psa_algorithm_t alg, |
Ronald Cron | 79bdd82 | 2021-06-17 16:46:44 +0200 | [diff] [blame] | 2588 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2589 | uint8_t *mac_size) |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2590 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2591 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2592 | psa_key_type_t key_type = psa_get_key_type(attributes); |
| 2593 | size_t key_bits = psa_get_key_bits(attributes); |
Steven Cooreman | 77e2cc5 | 2021-03-19 17:05:52 +0100 | [diff] [blame] | 2594 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2595 | if (!PSA_ALG_IS_MAC(alg)) { |
| 2596 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2597 | } |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2598 | |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 2599 | /* Validate the combination of key type and algorithm */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2600 | status = psa_mac_key_can_do(alg, key_type); |
| 2601 | if (status != PSA_SUCCESS) { |
| 2602 | return status; |
| 2603 | } |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2604 | |
Steven Cooreman | d1a68f1 | 2021-05-10 11:13:41 +0200 | [diff] [blame] | 2605 | /* Get the output length for the algorithm and key combination */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2606 | *mac_size = PSA_MAC_LENGTH(key_type, key_bits, alg); |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2607 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2608 | if (*mac_size < 4) { |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2609 | /* A very short MAC is too short for security since it can be |
| 2610 | * brute-forced. Ancient protocols with 32-bit MACs do exist, |
| 2611 | * so we make this our minimum, even though 32 bits is still |
| 2612 | * too small for security. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2613 | return PSA_ERROR_NOT_SUPPORTED; |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2614 | } |
Gilles Peskine | ab1d7ab | 2018-07-06 16:07:47 +0200 | [diff] [blame] | 2615 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2616 | if (*mac_size > PSA_MAC_LENGTH(key_type, key_bits, |
| 2617 | PSA_ALG_FULL_LENGTH_MAC(alg))) { |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 2618 | /* It's impossible to "truncate" to a larger length than the full length |
| 2619 | * of the algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2620 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 2621 | } |
| 2622 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2623 | if (*mac_size > PSA_MAC_MAX_SIZE) { |
Gilles Peskine | a9b6c80 | 2022-03-16 13:54:49 +0100 | [diff] [blame] | 2624 | /* PSA_MAC_LENGTH returns the correct length even for a MAC algorithm |
| 2625 | * that is disabled in the compile-time configuration. The result can |
| 2626 | * therefore be larger than PSA_MAC_MAX_SIZE, which does take the |
| 2627 | * configuration into account. In this case, force a return of |
| 2628 | * PSA_ERROR_NOT_SUPPORTED here. Otherwise psa_mac_verify(), or |
| 2629 | * psa_mac_compute(mac_size=PSA_MAC_MAX_SIZE), would return |
| 2630 | * PSA_ERROR_BUFFER_TOO_SMALL for an unsupported algorithm whose MAC size |
| 2631 | * is larger than PSA_MAC_MAX_SIZE, which is misleading and which breaks |
| 2632 | * systematically generated tests. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2633 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a9b6c80 | 2022-03-16 13:54:49 +0100 | [diff] [blame] | 2634 | } |
| 2635 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2636 | return PSA_SUCCESS; |
Ronald Cron | 2dff3b2 | 2021-06-17 16:33:22 +0200 | [diff] [blame] | 2637 | } |
| 2638 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2639 | static psa_status_t psa_mac_setup(psa_mac_operation_t *operation, |
| 2640 | mbedtls_svc_key_id_t key, |
| 2641 | psa_algorithm_t alg, |
| 2642 | int is_sign) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 2643 | { |
| 2644 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2645 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 2646 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2647 | |
| 2648 | /* A context must be freshly initialized before it can be set up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2649 | if (operation->id != 0) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 2650 | status = PSA_ERROR_BAD_STATE; |
| 2651 | goto exit; |
| 2652 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2653 | |
| 2654 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2655 | key, |
| 2656 | &slot, |
| 2657 | is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE, |
| 2658 | alg); |
| 2659 | if (status != PSA_SUCCESS) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 2660 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2661 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2662 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 2663 | status = psa_mac_finalize_alg_and_key_validation(alg, &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2664 | &operation->mac_size); |
| 2665 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2666 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2667 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2668 | |
| 2669 | operation->is_sign = is_sign; |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2670 | /* Dispatch the MAC setup call with validated input */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2671 | if (is_sign) { |
| 2672 | status = psa_driver_wrapper_mac_sign_setup(operation, |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 2673 | &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2674 | slot->key.data, |
| 2675 | slot->key.bytes, |
| 2676 | alg); |
| 2677 | } else { |
| 2678 | status = psa_driver_wrapper_mac_verify_setup(operation, |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 2679 | &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2680 | slot->key.data, |
| 2681 | slot->key.bytes, |
| 2682 | alg); |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2683 | } |
Gilles Peskine | 7e454bc | 2018-06-11 17:26:17 +0200 | [diff] [blame] | 2684 | |
Gilles Peskine | fbfac68 | 2018-07-08 20:51:54 +0200 | [diff] [blame] | 2685 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2686 | if (status != PSA_SUCCESS) { |
| 2687 | psa_mac_abort(operation); |
| 2688 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2689 | |
Ryan Everett | fb9857f | 2024-02-14 12:16:41 +0000 | [diff] [blame] | 2690 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2691 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2692 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2693 | } |
| 2694 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2695 | psa_status_t psa_mac_sign_setup(psa_mac_operation_t *operation, |
| 2696 | mbedtls_svc_key_id_t key, |
| 2697 | psa_algorithm_t alg) |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2698 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2699 | return psa_mac_setup(operation, key, alg, 1); |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2700 | } |
| 2701 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2702 | psa_status_t psa_mac_verify_setup(psa_mac_operation_t *operation, |
| 2703 | mbedtls_svc_key_id_t key, |
| 2704 | psa_algorithm_t alg) |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2705 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2706 | return psa_mac_setup(operation, key, alg, 0); |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2707 | } |
| 2708 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2709 | psa_status_t psa_mac_update(psa_mac_operation_t *operation, |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2710 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2711 | size_t input_length) |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2712 | { |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2713 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2714 | LOCAL_INPUT_DECLARE(input_external, input); |
| 2715 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2716 | if (operation->id == 0) { |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2717 | status = PSA_ERROR_BAD_STATE; |
| 2718 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2719 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2720 | |
Steven Cooreman | 6e7f291 | 2021-03-19 18:38:46 +0100 | [diff] [blame] | 2721 | /* Don't require hash implementations to behave correctly on a |
| 2722 | * zero-length input, which may have an invalid pointer. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2723 | if (input_length == 0) { |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2724 | status = PSA_SUCCESS; |
| 2725 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2726 | } |
Nir Sonnenschein | dcd636a | 2018-06-04 16:03:32 +0300 | [diff] [blame] | 2727 | |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2728 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 2729 | status = psa_driver_wrapper_mac_update(operation, input, input_length); |
| 2730 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2731 | if (status != PSA_SUCCESS) { |
| 2732 | psa_mac_abort(operation); |
| 2733 | } |
Steven Cooreman | 6e7f291 | 2021-03-19 18:38:46 +0100 | [diff] [blame] | 2734 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 2735 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2736 | exit: |
Thomas Daubney | c6705c6 | 2024-01-30 11:21:47 +0000 | [diff] [blame] | 2737 | #endif |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2738 | LOCAL_INPUT_FREE(input_external, input); |
| 2739 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2740 | return status; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2741 | } |
| 2742 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2743 | psa_status_t psa_mac_sign_finish(psa_mac_operation_t *operation, |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2744 | uint8_t *mac_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2745 | size_t mac_size, |
| 2746 | size_t *mac_length) |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2747 | { |
Steven Cooreman | a5b860a | 2021-03-19 19:04:39 +0100 | [diff] [blame] | 2748 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2749 | psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED; |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2750 | LOCAL_OUTPUT_DECLARE(mac_external, mac); |
Thomas Daubney | 1ffc5cb | 2024-01-31 18:09:36 +0000 | [diff] [blame] | 2751 | LOCAL_OUTPUT_ALLOC(mac_external, mac_size, mac); |
Steven Cooreman | 77e2cc5 | 2021-03-19 17:05:52 +0100 | [diff] [blame] | 2752 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2753 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2754 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2755 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2756 | } |
Jaeden Amero | 252ef28 | 2019-02-15 14:05:35 +0000 | [diff] [blame] | 2757 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2758 | if (!operation->is_sign) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2759 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2760 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2761 | } |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2762 | |
Steven Cooreman | 8af5c5c | 2021-05-11 11:09:13 +0200 | [diff] [blame] | 2763 | /* Sanity check. This will guarantee that mac_size != 0 (and so mac != NULL) |
| 2764 | * once all the error checks are done. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2765 | if (operation->mac_size == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2766 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2767 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2768 | } |
Steven Cooreman | 8af5c5c | 2021-05-11 11:09:13 +0200 | [diff] [blame] | 2769 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2770 | if (mac_size < operation->mac_size) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2771 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2772 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2773 | } |
Gilles Peskine | 5d0b864 | 2018-07-08 20:35:02 +0200 | [diff] [blame] | 2774 | |
Thomas Daubney | 1ffc5cb | 2024-01-31 18:09:36 +0000 | [diff] [blame] | 2775 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2776 | status = psa_driver_wrapper_mac_sign_finish(operation, |
| 2777 | mac, operation->mac_size, |
| 2778 | mac_length); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2779 | |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2780 | exit: |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2781 | /* In case of success, set the potential excess room in the output buffer |
| 2782 | * to an invalid value, to avoid potentially leaking a longer MAC. |
| 2783 | * In case of error, set the output length and content to a safe default, |
| 2784 | * such that in case the caller misses an error check, the output would be |
| 2785 | * an unachievable MAC. |
| 2786 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2787 | if (status != PSA_SUCCESS) { |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2788 | *mac_length = mac_size; |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2789 | operation->mac_size = 0; |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2790 | } |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2791 | |
Thomas Daubney | 03f1ea3 | 2024-02-01 16:16:27 +0000 | [diff] [blame] | 2792 | if (mac != NULL) { |
Thomas Daubney | 1ffc5cb | 2024-01-31 18:09:36 +0000 | [diff] [blame] | 2793 | psa_wipe_tag_output_buffer(mac, status, mac_size, *mac_length); |
| 2794 | } |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2795 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2796 | abort_status = psa_mac_abort(operation); |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2797 | LOCAL_OUTPUT_FREE(mac_external, mac); |
Gilles Peskine | 5d0b864 | 2018-07-08 20:35:02 +0200 | [diff] [blame] | 2798 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2799 | return status == PSA_SUCCESS ? abort_status : status; |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2800 | } |
| 2801 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2802 | psa_status_t psa_mac_verify_finish(psa_mac_operation_t *operation, |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2803 | const uint8_t *mac_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2804 | size_t mac_length) |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2805 | { |
Steven Cooreman | a5b860a | 2021-03-19 19:04:39 +0100 | [diff] [blame] | 2806 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2807 | psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED; |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2808 | LOCAL_INPUT_DECLARE(mac_external, mac); |
Steven Cooreman | 77e2cc5 | 2021-03-19 17:05:52 +0100 | [diff] [blame] | 2809 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2810 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2811 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2812 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2813 | } |
Jaeden Amero | 252ef28 | 2019-02-15 14:05:35 +0000 | [diff] [blame] | 2814 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2815 | if (operation->is_sign) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2816 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2817 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2818 | } |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2819 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2820 | if (operation->mac_size != mac_length) { |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2821 | status = PSA_ERROR_INVALID_SIGNATURE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2822 | goto exit; |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2823 | } |
| 2824 | |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2825 | LOCAL_INPUT_ALLOC(mac_external, mac_length, mac); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2826 | status = psa_driver_wrapper_mac_verify_finish(operation, |
| 2827 | mac, mac_length); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2828 | |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2829 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2830 | abort_status = psa_mac_abort(operation); |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2831 | LOCAL_INPUT_FREE(mac_external, mac); |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2832 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2833 | return status == PSA_SUCCESS ? abort_status : status; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2834 | } |
| 2835 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2836 | static psa_status_t psa_mac_compute_internal(mbedtls_svc_key_id_t key, |
| 2837 | psa_algorithm_t alg, |
| 2838 | const uint8_t *input, |
| 2839 | size_t input_length, |
| 2840 | uint8_t *mac, |
| 2841 | size_t mac_size, |
| 2842 | size_t *mac_length, |
| 2843 | int is_sign) |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2844 | { |
| 2845 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2846 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2847 | psa_key_slot_t *slot; |
| 2848 | uint8_t operation_mac_size = 0; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2849 | |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2850 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2851 | key, |
| 2852 | &slot, |
| 2853 | is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE, |
| 2854 | alg); |
| 2855 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2856 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2857 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2858 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 2859 | status = psa_mac_finalize_alg_and_key_validation(alg, &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2860 | &operation_mac_size); |
| 2861 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2862 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2863 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2864 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2865 | if (mac_size < operation_mac_size) { |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2866 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2867 | goto exit; |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2868 | } |
| 2869 | |
| 2870 | status = psa_driver_wrapper_mac_compute( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 2871 | &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2872 | slot->key.data, slot->key.bytes, |
| 2873 | alg, |
| 2874 | input, input_length, |
| 2875 | mac, operation_mac_size, mac_length); |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2876 | |
| 2877 | exit: |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2878 | /* In case of success, set the potential excess room in the output buffer |
| 2879 | * to an invalid value, to avoid potentially leaking a longer MAC. |
| 2880 | * In case of error, set the output length and content to a safe default, |
| 2881 | * such that in case the caller misses an error check, the output would be |
| 2882 | * an unachievable MAC. |
| 2883 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2884 | if (status != PSA_SUCCESS) { |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2885 | *mac_length = mac_size; |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2886 | operation_mac_size = 0; |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2887 | } |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 2888 | |
| 2889 | psa_wipe_tag_output_buffer(mac, status, mac_size, *mac_length); |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2890 | |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 2891 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2892 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2893 | return (status == PSA_SUCCESS) ? unlock_status : status; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2894 | } |
| 2895 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2896 | psa_status_t psa_mac_compute(mbedtls_svc_key_id_t key, |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2897 | psa_algorithm_t alg, |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2898 | const uint8_t *input_external, |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2899 | size_t input_length, |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2900 | uint8_t *mac_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2901 | size_t mac_size, |
| 2902 | size_t *mac_length) |
| 2903 | { |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2904 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2905 | LOCAL_INPUT_DECLARE(input_external, input); |
| 2906 | LOCAL_OUTPUT_DECLARE(mac_external, mac); |
| 2907 | |
| 2908 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 2909 | LOCAL_OUTPUT_ALLOC(mac_external, mac_size, mac); |
| 2910 | status = psa_mac_compute_internal(key, alg, |
Thomas Daubney | 7480a74 | 2024-01-30 11:29:47 +0000 | [diff] [blame] | 2911 | input, input_length, |
| 2912 | mac, mac_size, mac_length, 1); |
Thomas Daubney | c6705c6 | 2024-01-30 11:21:47 +0000 | [diff] [blame] | 2913 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 2914 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2915 | exit: |
Thomas Daubney | c6705c6 | 2024-01-30 11:21:47 +0000 | [diff] [blame] | 2916 | #endif |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2917 | LOCAL_INPUT_FREE(input_external, input); |
| 2918 | LOCAL_OUTPUT_FREE(mac_external, mac); |
| 2919 | |
| 2920 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2921 | } |
| 2922 | |
| 2923 | psa_status_t psa_mac_verify(mbedtls_svc_key_id_t key, |
| 2924 | psa_algorithm_t alg, |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2925 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2926 | size_t input_length, |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2927 | const uint8_t *mac_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2928 | size_t mac_length) |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2929 | { |
| 2930 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2931 | uint8_t actual_mac[PSA_MAC_MAX_SIZE]; |
| 2932 | size_t actual_mac_length; |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2933 | LOCAL_INPUT_DECLARE(input_external, input); |
| 2934 | LOCAL_INPUT_DECLARE(mac_external, mac); |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2935 | |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2936 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2937 | status = psa_mac_compute_internal(key, alg, |
| 2938 | input, input_length, |
| 2939 | actual_mac, sizeof(actual_mac), |
| 2940 | &actual_mac_length, 0); |
| 2941 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2942 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2943 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2944 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2945 | if (mac_length != actual_mac_length) { |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2946 | status = PSA_ERROR_INVALID_SIGNATURE; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2947 | goto exit; |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2948 | } |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2949 | |
| 2950 | LOCAL_INPUT_ALLOC(mac_external, mac_length, mac); |
Dave Rodgman | 7870115 | 2023-08-29 14:20:18 +0100 | [diff] [blame] | 2951 | if (mbedtls_ct_memcmp(mac, actual_mac, actual_mac_length) != 0) { |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2952 | status = PSA_ERROR_INVALID_SIGNATURE; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2953 | goto exit; |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2954 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2955 | |
| 2956 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2957 | mbedtls_platform_zeroize(actual_mac, sizeof(actual_mac)); |
Thomas Daubney | 8db8d1a | 2024-01-18 13:18:58 +0000 | [diff] [blame] | 2958 | LOCAL_INPUT_FREE(input_external, input); |
| 2959 | LOCAL_INPUT_FREE(mac_external, mac); |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2960 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2961 | return status; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2962 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 2963 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 2964 | /****************************************************************/ |
| 2965 | /* Asymmetric cryptography */ |
| 2966 | /****************************************************************/ |
| 2967 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2968 | static psa_status_t psa_sign_verify_check_alg(int input_is_message, |
| 2969 | psa_algorithm_t alg) |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2970 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2971 | if (input_is_message) { |
| 2972 | if (!PSA_ALG_IS_SIGN_MESSAGE(alg)) { |
| 2973 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2974 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2975 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2976 | if (PSA_ALG_IS_SIGN_HASH(alg)) { |
| 2977 | if (!PSA_ALG_IS_HASH(PSA_ALG_SIGN_GET_HASH(alg))) { |
| 2978 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2979 | } |
| 2980 | } |
| 2981 | } else { |
| 2982 | if (!PSA_ALG_IS_SIGN_HASH(alg)) { |
| 2983 | return PSA_ERROR_INVALID_ARGUMENT; |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2984 | } |
| 2985 | } |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2986 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2987 | return PSA_SUCCESS; |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2988 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2989 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2990 | static psa_status_t psa_sign_internal(mbedtls_svc_key_id_t key, |
| 2991 | int input_is_message, |
| 2992 | psa_algorithm_t alg, |
| 2993 | const uint8_t *input, |
| 2994 | size_t input_length, |
| 2995 | uint8_t *signature, |
| 2996 | size_t signature_size, |
| 2997 | size_t *signature_length) |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2998 | { |
| 2999 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3000 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3001 | psa_key_slot_t *slot; |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3002 | |
| 3003 | *signature_length = 0; |
| 3004 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3005 | status = psa_sign_verify_check_alg(input_is_message, alg); |
| 3006 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 3007 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3008 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3009 | |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3010 | /* Immediately reject a zero-length signature buffer. This guarantees |
gabor-mezei-arm | 12b4f34 | 2021-05-05 13:54:55 +0200 | [diff] [blame] | 3011 | * that signature must be a valid pointer. (On the other hand, the input |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3012 | * buffer can in principle be empty since it doesn't actually have |
| 3013 | * to be a hash.) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3014 | if (signature_size == 0) { |
| 3015 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 3016 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3017 | |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3018 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3019 | key, &slot, |
| 3020 | input_is_message ? PSA_KEY_USAGE_SIGN_MESSAGE : |
| 3021 | PSA_KEY_USAGE_SIGN_HASH, |
| 3022 | alg); |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3023 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3024 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3025 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3026 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3027 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3028 | if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) { |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3029 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 3030 | goto exit; |
| 3031 | } |
| 3032 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3033 | if (input_is_message) { |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3034 | status = psa_driver_wrapper_sign_message( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3035 | &slot->attr, slot->key.data, slot->key.bytes, |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3036 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3037 | signature, signature_size, signature_length); |
| 3038 | } else { |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3039 | |
| 3040 | status = psa_driver_wrapper_sign_hash( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3041 | &slot->attr, slot->key.data, slot->key.bytes, |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3042 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3043 | signature, signature_size, signature_length); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3044 | } |
| 3045 | |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3046 | |
| 3047 | exit: |
Paul Elliott | 59200a2 | 2023-02-21 15:07:40 +0000 | [diff] [blame] | 3048 | psa_wipe_tag_output_buffer(signature, status, signature_size, |
| 3049 | *signature_length); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3050 | |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 3051 | unlock_status = psa_unregister_read_under_mutex(slot); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3052 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3053 | return (status == PSA_SUCCESS) ? unlock_status : status; |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3054 | } |
| 3055 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3056 | static psa_status_t psa_verify_internal(mbedtls_svc_key_id_t key, |
| 3057 | int input_is_message, |
| 3058 | psa_algorithm_t alg, |
| 3059 | const uint8_t *input, |
| 3060 | size_t input_length, |
| 3061 | const uint8_t *signature, |
| 3062 | size_t signature_length) |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3063 | { |
| 3064 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3065 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3066 | psa_key_slot_t *slot; |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3067 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3068 | status = psa_sign_verify_check_alg(input_is_message, alg); |
| 3069 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 3070 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3071 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3072 | |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3073 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3074 | key, &slot, |
| 3075 | input_is_message ? PSA_KEY_USAGE_VERIFY_MESSAGE : |
| 3076 | PSA_KEY_USAGE_VERIFY_HASH, |
| 3077 | alg); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3078 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3079 | if (status != PSA_SUCCESS) { |
| 3080 | return status; |
| 3081 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3082 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3083 | if (input_is_message) { |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3084 | status = psa_driver_wrapper_verify_message( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3085 | &slot->attr, slot->key.data, slot->key.bytes, |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3086 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3087 | signature, signature_length); |
| 3088 | } else { |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3089 | status = psa_driver_wrapper_verify_hash( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3090 | &slot->attr, slot->key.data, slot->key.bytes, |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3091 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3092 | signature, signature_length); |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3093 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3094 | |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 3095 | unlock_status = psa_unregister_read_under_mutex(slot); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3096 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3097 | return (status == PSA_SUCCESS) ? unlock_status : status; |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3098 | |
| 3099 | } |
| 3100 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 3101 | psa_status_t psa_sign_message_builtin( |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3102 | const psa_key_attributes_t *attributes, |
| 3103 | const uint8_t *key_buffer, |
| 3104 | size_t key_buffer_size, |
| 3105 | psa_algorithm_t alg, |
| 3106 | const uint8_t *input, |
| 3107 | size_t input_length, |
| 3108 | uint8_t *signature, |
| 3109 | size_t signature_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3110 | size_t *signature_length) |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3111 | { |
| 3112 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3113 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3114 | if (PSA_ALG_IS_SIGN_HASH(alg)) { |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 3115 | size_t hash_length; |
| 3116 | uint8_t hash[PSA_HASH_MAX_SIZE]; |
| 3117 | |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3118 | status = psa_driver_wrapper_hash_compute( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3119 | PSA_ALG_SIGN_GET_HASH(alg), |
| 3120 | input, input_length, |
| 3121 | hash, sizeof(hash), &hash_length); |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3122 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3123 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3124 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3125 | } |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 3126 | |
| 3127 | return psa_driver_wrapper_sign_hash( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3128 | attributes, key_buffer, key_buffer_size, |
| 3129 | alg, hash, hash_length, |
| 3130 | signature, signature_size, signature_length); |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3131 | } |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3132 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3133 | return PSA_ERROR_NOT_SUPPORTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3134 | } |
| 3135 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3136 | psa_status_t psa_sign_message(mbedtls_svc_key_id_t key, |
| 3137 | psa_algorithm_t alg, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3138 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3139 | size_t input_length, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3140 | uint8_t *signature_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3141 | size_t signature_size, |
| 3142 | size_t *signature_length) |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3143 | { |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3144 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3145 | LOCAL_INPUT_DECLARE(input_external, input); |
| 3146 | LOCAL_OUTPUT_DECLARE(signature_external, signature); |
| 3147 | |
| 3148 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 3149 | LOCAL_OUTPUT_ALLOC(signature_external, signature_size, signature); |
| 3150 | status = psa_sign_internal(key, 1, alg, input, input_length, signature, |
| 3151 | signature_size, signature_length); |
| 3152 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 3153 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3154 | exit: |
Thomas Daubney | 3e65f52 | 2024-01-30 12:37:25 +0000 | [diff] [blame] | 3155 | #endif |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3156 | LOCAL_INPUT_FREE(input_external, input); |
| 3157 | LOCAL_OUTPUT_FREE(signature_external, signature); |
| 3158 | return status; |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3159 | } |
| 3160 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 3161 | psa_status_t psa_verify_message_builtin( |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3162 | const psa_key_attributes_t *attributes, |
| 3163 | const uint8_t *key_buffer, |
| 3164 | size_t key_buffer_size, |
| 3165 | psa_algorithm_t alg, |
| 3166 | const uint8_t *input, |
| 3167 | size_t input_length, |
| 3168 | const uint8_t *signature, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3169 | size_t signature_length) |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3170 | { |
| 3171 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3172 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3173 | if (PSA_ALG_IS_SIGN_HASH(alg)) { |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 3174 | size_t hash_length; |
| 3175 | uint8_t hash[PSA_HASH_MAX_SIZE]; |
| 3176 | |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3177 | status = psa_driver_wrapper_hash_compute( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3178 | PSA_ALG_SIGN_GET_HASH(alg), |
| 3179 | input, input_length, |
| 3180 | hash, sizeof(hash), &hash_length); |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3181 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3182 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3183 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3184 | } |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 3185 | |
| 3186 | return psa_driver_wrapper_verify_hash( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3187 | attributes, key_buffer, key_buffer_size, |
| 3188 | alg, hash, hash_length, |
| 3189 | signature, signature_length); |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3190 | } |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3191 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3192 | return PSA_ERROR_NOT_SUPPORTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3193 | } |
| 3194 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3195 | psa_status_t psa_verify_message(mbedtls_svc_key_id_t key, |
| 3196 | psa_algorithm_t alg, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3197 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3198 | size_t input_length, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3199 | const uint8_t *signature_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3200 | size_t signature_length) |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3201 | { |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3202 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3203 | LOCAL_INPUT_DECLARE(input_external, input); |
| 3204 | LOCAL_INPUT_DECLARE(signature_external, signature); |
| 3205 | |
| 3206 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 3207 | LOCAL_INPUT_ALLOC(signature_external, signature_length, signature); |
| 3208 | status = psa_verify_internal(key, 1, alg, input, input_length, signature, |
| 3209 | signature_length); |
| 3210 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 3211 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3212 | exit: |
Thomas Daubney | 3e65f52 | 2024-01-30 12:37:25 +0000 | [diff] [blame] | 3213 | #endif |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3214 | LOCAL_INPUT_FREE(input_external, input); |
| 3215 | LOCAL_INPUT_FREE(signature_external, signature); |
| 3216 | |
| 3217 | return status; |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3218 | } |
| 3219 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 3220 | psa_status_t psa_sign_hash_builtin( |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3221 | const psa_key_attributes_t *attributes, |
| 3222 | const uint8_t *key_buffer, size_t key_buffer_size, |
| 3223 | psa_algorithm_t alg, const uint8_t *hash, size_t hash_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3224 | uint8_t *signature, size_t signature_size, size_t *signature_length) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3225 | { |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 3226 | if (attributes->type == PSA_KEY_TYPE_RSA_KEY_PAIR) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3227 | if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) || |
| 3228 | PSA_ALG_IS_RSA_PSS(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3229 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3230 | defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) |
| 3231 | return mbedtls_psa_rsa_sign_hash( |
| 3232 | attributes, |
| 3233 | key_buffer, key_buffer_size, |
| 3234 | alg, hash, hash_length, |
| 3235 | signature, signature_size, signature_length); |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3236 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || |
| 3237 | * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3238 | } else { |
| 3239 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | acda834 | 2020-07-24 23:09:52 +0200 | [diff] [blame] | 3240 | } |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 3241 | } else if (PSA_KEY_TYPE_IS_ECC(attributes->type)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3242 | if (PSA_ALG_IS_ECDSA(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3243 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3244 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) |
| 3245 | return mbedtls_psa_ecdsa_sign_hash( |
| 3246 | attributes, |
| 3247 | key_buffer, key_buffer_size, |
| 3248 | alg, hash, hash_length, |
| 3249 | signature, signature_size, signature_length); |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3250 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3251 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3252 | } else { |
| 3253 | return PSA_ERROR_INVALID_ARGUMENT; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3254 | } |
Ronald Cron | 8a494f3 | 2021-02-17 09:49:51 +0100 | [diff] [blame] | 3255 | } |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3256 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3257 | (void) key_buffer; |
| 3258 | (void) key_buffer_size; |
| 3259 | (void) hash; |
| 3260 | (void) hash_length; |
| 3261 | (void) signature; |
| 3262 | (void) signature_size; |
| 3263 | (void) signature_length; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3264 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3265 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3266 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3267 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3268 | psa_status_t psa_sign_hash(mbedtls_svc_key_id_t key, |
| 3269 | psa_algorithm_t alg, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3270 | const uint8_t *hash_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3271 | size_t hash_length, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3272 | uint8_t *signature_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3273 | size_t signature_size, |
| 3274 | size_t *signature_length) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3275 | { |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3276 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3277 | LOCAL_INPUT_DECLARE(hash_external, hash); |
| 3278 | LOCAL_OUTPUT_DECLARE(signature_external, signature); |
| 3279 | |
| 3280 | LOCAL_INPUT_ALLOC(hash_external, hash_length, hash); |
| 3281 | LOCAL_OUTPUT_ALLOC(signature_external, signature_size, signature); |
| 3282 | status = psa_sign_internal(key, 0, alg, hash, hash_length, signature, |
| 3283 | signature_size, signature_length); |
| 3284 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 3285 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3286 | exit: |
Thomas Daubney | 3e65f52 | 2024-01-30 12:37:25 +0000 | [diff] [blame] | 3287 | #endif |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3288 | LOCAL_INPUT_FREE(hash_external, hash); |
| 3289 | LOCAL_OUTPUT_FREE(signature_external, signature); |
| 3290 | |
| 3291 | return status; |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 3292 | } |
| 3293 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 3294 | psa_status_t psa_verify_hash_builtin( |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3295 | const psa_key_attributes_t *attributes, |
| 3296 | const uint8_t *key_buffer, size_t key_buffer_size, |
| 3297 | psa_algorithm_t alg, const uint8_t *hash, size_t hash_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3298 | const uint8_t *signature, size_t signature_length) |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 3299 | { |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 3300 | if (PSA_KEY_TYPE_IS_RSA(attributes->type)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3301 | if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) || |
| 3302 | PSA_ALG_IS_RSA_PSS(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3303 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3304 | defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) |
| 3305 | return mbedtls_psa_rsa_verify_hash( |
| 3306 | attributes, |
| 3307 | key_buffer, key_buffer_size, |
| 3308 | alg, hash, hash_length, |
| 3309 | signature, signature_length); |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3310 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || |
| 3311 | * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3312 | } else { |
| 3313 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | acda834 | 2020-07-24 23:09:52 +0200 | [diff] [blame] | 3314 | } |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 3315 | } else if (PSA_KEY_TYPE_IS_ECC(attributes->type)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3316 | if (PSA_ALG_IS_ECDSA(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3317 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3318 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) |
| 3319 | return mbedtls_psa_ecdsa_verify_hash( |
| 3320 | attributes, |
| 3321 | key_buffer, key_buffer_size, |
| 3322 | alg, hash, hash_length, |
| 3323 | signature, signature_length); |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3324 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3325 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3326 | } else { |
| 3327 | return PSA_ERROR_INVALID_ARGUMENT; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3328 | } |
Ronald Cron | 8a494f3 | 2021-02-17 09:49:51 +0100 | [diff] [blame] | 3329 | } |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3330 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3331 | (void) key_buffer; |
| 3332 | (void) key_buffer_size; |
| 3333 | (void) hash; |
| 3334 | (void) hash_length; |
| 3335 | (void) signature; |
| 3336 | (void) signature_length; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3337 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3338 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3339 | } |
| 3340 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3341 | psa_status_t psa_verify_hash(mbedtls_svc_key_id_t key, |
| 3342 | psa_algorithm_t alg, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3343 | const uint8_t *hash_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3344 | size_t hash_length, |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3345 | const uint8_t *signature_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3346 | size_t signature_length) |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 3347 | { |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3348 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3349 | LOCAL_INPUT_DECLARE(hash_external, hash); |
| 3350 | LOCAL_INPUT_DECLARE(signature_external, signature); |
| 3351 | |
| 3352 | LOCAL_INPUT_ALLOC(hash_external, hash_length, hash); |
| 3353 | LOCAL_INPUT_ALLOC(signature_external, signature_length, signature); |
| 3354 | status = psa_verify_internal(key, 0, alg, hash, hash_length, signature, |
| 3355 | signature_length); |
| 3356 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 3357 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3358 | exit: |
Thomas Daubney | 3e65f52 | 2024-01-30 12:37:25 +0000 | [diff] [blame] | 3359 | #endif |
Thomas Daubney | 4f8847b | 2024-01-18 17:23:02 +0000 | [diff] [blame] | 3360 | LOCAL_INPUT_FREE(hash_external, hash); |
| 3361 | LOCAL_INPUT_FREE(signature_external, signature); |
| 3362 | |
| 3363 | return status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3364 | } |
| 3365 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3366 | psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key, |
| 3367 | psa_algorithm_t alg, |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3368 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3369 | size_t input_length, |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3370 | const uint8_t *salt_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3371 | size_t salt_length, |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3372 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3373 | size_t output_size, |
| 3374 | size_t *output_length) |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3375 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3376 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 3377 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 3378 | psa_key_slot_t *slot; |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 3379 | |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3380 | LOCAL_INPUT_DECLARE(input_external, input); |
| 3381 | LOCAL_INPUT_DECLARE(salt_external, salt); |
| 3382 | LOCAL_OUTPUT_DECLARE(output_external, output); |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3383 | |
Darryl Green | 5cc689a | 2018-07-24 15:34:10 +0100 | [diff] [blame] | 3384 | (void) input; |
| 3385 | (void) input_length; |
| 3386 | (void) salt; |
| 3387 | (void) output; |
| 3388 | (void) output_size; |
| 3389 | |
Nir Sonnenschein | ca466c8 | 2018-06-04 16:43:12 +0300 | [diff] [blame] | 3390 | *output_length = 0; |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3391 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3392 | if (!PSA_ALG_IS_RSA_OAEP(alg) && salt_length != 0) { |
| 3393 | return PSA_ERROR_INVALID_ARGUMENT; |
| 3394 | } |
Gilles Peskine | b3fc05d | 2018-06-30 19:04:35 +0200 | [diff] [blame] | 3395 | |
Valerio Setti | 5bb454a | 2024-01-15 10:43:16 +0100 | [diff] [blame] | 3396 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3397 | key, &slot, PSA_KEY_USAGE_ENCRYPT, alg); |
| 3398 | if (status != PSA_SUCCESS) { |
| 3399 | return status; |
| 3400 | } |
| 3401 | if (!(PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type) || |
| 3402 | PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type))) { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3403 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 3404 | goto exit; |
| 3405 | } |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3406 | |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3407 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 3408 | LOCAL_INPUT_ALLOC(salt_external, salt_length, salt); |
| 3409 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
David Horstmann | 93fa4e1 | 2024-03-12 15:02:28 +0000 | [diff] [blame] | 3410 | |
Przemyslaw Stekiel | 19e6142 | 2021-12-09 11:09:11 +0100 | [diff] [blame] | 3411 | status = psa_driver_wrapper_asymmetric_encrypt( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3412 | &slot->attr, slot->key.data, slot->key.bytes, |
Przemyslaw Stekiel | 19e6142 | 2021-12-09 11:09:11 +0100 | [diff] [blame] | 3413 | alg, input, input_length, salt, salt_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3414 | output, output_size, output_length); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3415 | exit: |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 3416 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3417 | |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3418 | LOCAL_INPUT_FREE(input_external, input); |
| 3419 | LOCAL_INPUT_FREE(salt_external, salt); |
| 3420 | LOCAL_OUTPUT_FREE(output_external, output); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3421 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3422 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 5b051bc | 2018-05-31 13:25:48 +0200 | [diff] [blame] | 3423 | } |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3424 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3425 | psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key, |
| 3426 | psa_algorithm_t alg, |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3427 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3428 | size_t input_length, |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3429 | const uint8_t *salt_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3430 | size_t salt_length, |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3431 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3432 | size_t output_size, |
| 3433 | size_t *output_length) |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3434 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3435 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 3436 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 3437 | psa_key_slot_t *slot; |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 3438 | |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3439 | LOCAL_INPUT_DECLARE(input_external, input); |
| 3440 | LOCAL_INPUT_DECLARE(salt_external, salt); |
| 3441 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 3442 | |
Darryl Green | 5cc689a | 2018-07-24 15:34:10 +0100 | [diff] [blame] | 3443 | (void) input; |
| 3444 | (void) input_length; |
| 3445 | (void) salt; |
| 3446 | (void) output; |
| 3447 | (void) output_size; |
| 3448 | |
Nir Sonnenschein | ca466c8 | 2018-06-04 16:43:12 +0300 | [diff] [blame] | 3449 | *output_length = 0; |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3450 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3451 | if (!PSA_ALG_IS_RSA_OAEP(alg) && salt_length != 0) { |
| 3452 | return PSA_ERROR_INVALID_ARGUMENT; |
| 3453 | } |
Gilles Peskine | b3fc05d | 2018-06-30 19:04:35 +0200 | [diff] [blame] | 3454 | |
Valerio Setti | 5bb454a | 2024-01-15 10:43:16 +0100 | [diff] [blame] | 3455 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3456 | key, &slot, PSA_KEY_USAGE_DECRYPT, alg); |
| 3457 | if (status != PSA_SUCCESS) { |
| 3458 | return status; |
| 3459 | } |
| 3460 | if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3461 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 3462 | goto exit; |
| 3463 | } |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3464 | |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3465 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 3466 | LOCAL_INPUT_ALLOC(salt_external, salt_length, salt); |
| 3467 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
David Horstmann | 93fa4e1 | 2024-03-12 15:02:28 +0000 | [diff] [blame] | 3468 | |
Przemyslaw Stekiel | 8d45c00 | 2021-12-13 08:58:19 +0100 | [diff] [blame] | 3469 | status = psa_driver_wrapper_asymmetric_decrypt( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3470 | &slot->attr, slot->key.data, slot->key.bytes, |
Przemyslaw Stekiel | 8d45c00 | 2021-12-13 08:58:19 +0100 | [diff] [blame] | 3471 | alg, input, input_length, salt, salt_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3472 | output, output_size, output_length); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3473 | |
| 3474 | exit: |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 3475 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3476 | |
Thomas Daubney | 6adbb2a | 2024-01-18 18:10:32 +0000 | [diff] [blame] | 3477 | LOCAL_INPUT_FREE(input_external, input); |
| 3478 | LOCAL_INPUT_FREE(salt_external, salt); |
| 3479 | LOCAL_OUTPUT_FREE(output_external, output); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3480 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3481 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 5b051bc | 2018-05-31 13:25:48 +0200 | [diff] [blame] | 3482 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3483 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3484 | /****************************************************************/ |
| 3485 | /* Asymmetric interruptible cryptography */ |
| 3486 | /****************************************************************/ |
| 3487 | |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3488 | static uint32_t psa_interruptible_max_ops = PSA_INTERRUPTIBLE_MAX_OPS_UNLIMITED; |
| 3489 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3490 | void psa_interruptible_set_max_ops(uint32_t max_ops) |
| 3491 | { |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3492 | psa_interruptible_max_ops = max_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3493 | } |
| 3494 | |
| 3495 | uint32_t psa_interruptible_get_max_ops(void) |
| 3496 | { |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3497 | return psa_interruptible_max_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3498 | } |
| 3499 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3500 | uint32_t psa_sign_hash_get_num_ops( |
| 3501 | const psa_sign_hash_interruptible_operation_t *operation) |
| 3502 | { |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3503 | return operation->num_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3504 | } |
| 3505 | |
| 3506 | uint32_t psa_verify_hash_get_num_ops( |
| 3507 | const psa_verify_hash_interruptible_operation_t *operation) |
| 3508 | { |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3509 | return operation->num_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3510 | } |
| 3511 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3512 | static psa_status_t psa_sign_hash_abort_internal( |
| 3513 | psa_sign_hash_interruptible_operation_t *operation) |
| 3514 | { |
| 3515 | if (operation->id == 0) { |
| 3516 | /* The object has (apparently) been initialized but it is not (yet) |
| 3517 | * in use. It's ok to call abort on such an object, and there's |
| 3518 | * nothing to do. */ |
| 3519 | return PSA_SUCCESS; |
| 3520 | } |
| 3521 | |
| 3522 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3523 | |
| 3524 | status = psa_driver_wrapper_sign_hash_abort(operation); |
| 3525 | |
| 3526 | operation->id = 0; |
| 3527 | |
Paul Elliott | e6145dc | 2023-02-07 12:51:21 +0000 | [diff] [blame] | 3528 | /* Do not clear either the error_occurred or num_ops elements here as they |
| 3529 | * only want to be cleared by the application calling abort, not by abort |
| 3530 | * being called at completion of an operation. */ |
| 3531 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3532 | return status; |
| 3533 | } |
| 3534 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3535 | psa_status_t psa_sign_hash_start( |
| 3536 | psa_sign_hash_interruptible_operation_t *operation, |
| 3537 | mbedtls_svc_key_id_t key, psa_algorithm_t alg, |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3538 | const uint8_t *hash_external, size_t hash_length) |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3539 | { |
| 3540 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3541 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3542 | psa_key_slot_t *slot; |
| 3543 | |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3544 | LOCAL_INPUT_DECLARE(hash_external, hash); |
| 3545 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3546 | /* Check that start has not been previously called, or operation has not |
| 3547 | * previously errored. */ |
| 3548 | if (operation->id != 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3549 | return PSA_ERROR_BAD_STATE; |
| 3550 | } |
| 3551 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3552 | status = psa_sign_verify_check_alg(0, alg); |
| 3553 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3554 | operation->error_occurred = 1; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3555 | return status; |
| 3556 | } |
| 3557 | |
| 3558 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 3559 | PSA_KEY_USAGE_SIGN_HASH, |
| 3560 | alg); |
| 3561 | |
| 3562 | if (status != PSA_SUCCESS) { |
| 3563 | goto exit; |
| 3564 | } |
| 3565 | |
| 3566 | if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) { |
| 3567 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 3568 | goto exit; |
| 3569 | } |
| 3570 | |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3571 | LOCAL_INPUT_ALLOC(hash_external, hash_length, hash); |
| 3572 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3573 | /* Ensure ops count gets reset, in case of operation re-use. */ |
| 3574 | operation->num_ops = 0; |
| 3575 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3576 | status = psa_driver_wrapper_sign_hash_start(operation, &slot->attr, |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3577 | slot->key.data, |
| 3578 | slot->key.bytes, alg, |
| 3579 | hash, hash_length); |
| 3580 | exit: |
| 3581 | |
| 3582 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3583 | operation->error_occurred = 1; |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3584 | psa_sign_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3585 | } |
| 3586 | |
Ryan Everett | dcc03d5 | 2024-02-14 15:44:13 +0000 | [diff] [blame] | 3587 | unlock_status = psa_unregister_read_under_mutex(slot); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3588 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3589 | if (unlock_status != PSA_SUCCESS) { |
| 3590 | operation->error_occurred = 1; |
| 3591 | } |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3592 | |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3593 | LOCAL_INPUT_FREE(hash_external, hash); |
| 3594 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3595 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3596 | } |
| 3597 | |
| 3598 | |
| 3599 | psa_status_t psa_sign_hash_complete( |
| 3600 | psa_sign_hash_interruptible_operation_t *operation, |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3601 | uint8_t *signature_external, size_t signature_size, |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3602 | size_t *signature_length) |
| 3603 | { |
| 3604 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3605 | |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3606 | LOCAL_OUTPUT_DECLARE(signature_external, signature); |
| 3607 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3608 | *signature_length = 0; |
| 3609 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3610 | /* Check that start has been called first, and that operation has not |
| 3611 | * previously errored. */ |
| 3612 | if (operation->id == 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3613 | status = PSA_ERROR_BAD_STATE; |
| 3614 | goto exit; |
| 3615 | } |
| 3616 | |
Paul Elliott | 096abc4 | 2023-02-03 18:33:23 +0000 | [diff] [blame] | 3617 | /* Immediately reject a zero-length signature buffer. This guarantees that |
| 3618 | * signature must be a valid pointer. */ |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3619 | if (signature_size == 0) { |
| 3620 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 3621 | goto exit; |
| 3622 | } |
| 3623 | |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3624 | LOCAL_OUTPUT_ALLOC(signature_external, signature_size, signature); |
| 3625 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3626 | status = psa_driver_wrapper_sign_hash_complete(operation, signature, |
| 3627 | signature_size, |
| 3628 | signature_length); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3629 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3630 | /* Update ops count with work done. */ |
Paul Elliott | de1114c | 2023-02-07 12:43:11 +0000 | [diff] [blame] | 3631 | operation->num_ops = psa_driver_wrapper_sign_hash_get_num_ops(operation); |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3632 | |
Paul Elliott | ebe225c | 2023-02-10 14:32:53 +0000 | [diff] [blame] | 3633 | exit: |
| 3634 | |
David Horstmann | c5064c8 | 2024-03-11 17:02:03 +0000 | [diff] [blame] | 3635 | if (signature != NULL) { |
| 3636 | psa_wipe_tag_output_buffer(signature, status, signature_size, |
| 3637 | *signature_length); |
| 3638 | } |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3639 | |
Paul Elliott | 53bb312 | 2023-02-10 14:22:22 +0000 | [diff] [blame] | 3640 | if (status != PSA_OPERATION_INCOMPLETE) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3641 | if (status != PSA_SUCCESS) { |
| 3642 | operation->error_occurred = 1; |
| 3643 | } |
| 3644 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3645 | psa_sign_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3646 | } |
| 3647 | |
David Horstmann | 4a523a6 | 2024-03-11 13:32:16 +0000 | [diff] [blame] | 3648 | LOCAL_OUTPUT_FREE(signature_external, signature); |
| 3649 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3650 | return status; |
| 3651 | } |
| 3652 | |
| 3653 | psa_status_t psa_sign_hash_abort( |
| 3654 | psa_sign_hash_interruptible_operation_t *operation) |
| 3655 | { |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3656 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3657 | |
| 3658 | status = psa_sign_hash_abort_internal(operation); |
| 3659 | |
| 3660 | /* We clear the number of ops done here, so that it is not cleared when |
| 3661 | * the operation fails or succeeds, only on manual abort. */ |
| 3662 | operation->num_ops = 0; |
| 3663 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3664 | /* Likewise, failure state. */ |
| 3665 | operation->error_occurred = 0; |
| 3666 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3667 | return status; |
| 3668 | } |
| 3669 | |
| 3670 | static psa_status_t psa_verify_hash_abort_internal( |
| 3671 | psa_verify_hash_interruptible_operation_t *operation) |
| 3672 | { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3673 | if (operation->id == 0) { |
| 3674 | /* The object has (apparently) been initialized but it is not (yet) |
| 3675 | * in use. It's ok to call abort on such an object, and there's |
| 3676 | * nothing to do. */ |
| 3677 | return PSA_SUCCESS; |
| 3678 | } |
| 3679 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3680 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3681 | |
| 3682 | status = psa_driver_wrapper_verify_hash_abort(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3683 | |
| 3684 | operation->id = 0; |
| 3685 | |
Paul Elliott | e6145dc | 2023-02-07 12:51:21 +0000 | [diff] [blame] | 3686 | /* Do not clear either the error_occurred or num_ops elements here as they |
| 3687 | * only want to be cleared by the application calling abort, not by abort |
| 3688 | * being called at completion of an operation. */ |
| 3689 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3690 | return status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3691 | } |
| 3692 | |
| 3693 | psa_status_t psa_verify_hash_start( |
| 3694 | psa_verify_hash_interruptible_operation_t *operation, |
| 3695 | mbedtls_svc_key_id_t key, psa_algorithm_t alg, |
David Horstmann | 0fea6a5 | 2024-03-11 13:41:05 +0000 | [diff] [blame] | 3696 | const uint8_t *hash_external, size_t hash_length, |
| 3697 | const uint8_t *signature_external, size_t signature_length) |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3698 | { |
| 3699 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3700 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3701 | psa_key_slot_t *slot; |
| 3702 | |
David Horstmann | 0fea6a5 | 2024-03-11 13:41:05 +0000 | [diff] [blame] | 3703 | LOCAL_INPUT_DECLARE(hash_external, hash); |
| 3704 | LOCAL_INPUT_DECLARE(signature_external, signature); |
| 3705 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3706 | /* Check that start has not been previously called, or operation has not |
| 3707 | * previously errored. */ |
| 3708 | if (operation->id != 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3709 | return PSA_ERROR_BAD_STATE; |
| 3710 | } |
| 3711 | |
| 3712 | status = psa_sign_verify_check_alg(0, alg); |
| 3713 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3714 | operation->error_occurred = 1; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3715 | return status; |
| 3716 | } |
| 3717 | |
| 3718 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 3719 | PSA_KEY_USAGE_VERIFY_HASH, |
| 3720 | alg); |
| 3721 | |
| 3722 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3723 | operation->error_occurred = 1; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3724 | return status; |
| 3725 | } |
| 3726 | |
David Horstmann | 0fea6a5 | 2024-03-11 13:41:05 +0000 | [diff] [blame] | 3727 | LOCAL_INPUT_ALLOC(hash_external, hash_length, hash); |
| 3728 | LOCAL_INPUT_ALLOC(signature_external, signature_length, signature); |
| 3729 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3730 | /* Ensure ops count gets reset, in case of operation re-use. */ |
| 3731 | operation->num_ops = 0; |
| 3732 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 3733 | status = psa_driver_wrapper_verify_hash_start(operation, &slot->attr, |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3734 | slot->key.data, |
| 3735 | slot->key.bytes, |
| 3736 | alg, hash, hash_length, |
| 3737 | signature, signature_length); |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 3738 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
David Horstmann | 0fea6a5 | 2024-03-11 13:41:05 +0000 | [diff] [blame] | 3739 | exit: |
| 3740 | #endif |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3741 | |
| 3742 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3743 | operation->error_occurred = 1; |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3744 | psa_verify_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3745 | } |
| 3746 | |
Ryan Everett | 291267f | 2024-02-14 15:59:15 +0000 | [diff] [blame] | 3747 | unlock_status = psa_unregister_read_under_mutex(slot); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3748 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3749 | if (unlock_status != PSA_SUCCESS) { |
| 3750 | operation->error_occurred = 1; |
| 3751 | } |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3752 | |
David Horstmann | 0fea6a5 | 2024-03-11 13:41:05 +0000 | [diff] [blame] | 3753 | LOCAL_INPUT_FREE(hash_external, hash); |
| 3754 | LOCAL_INPUT_FREE(signature_external, signature); |
| 3755 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3756 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3757 | } |
| 3758 | |
| 3759 | psa_status_t psa_verify_hash_complete( |
| 3760 | psa_verify_hash_interruptible_operation_t *operation) |
| 3761 | { |
| 3762 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3763 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3764 | /* Check that start has been called first, and that operation has not |
| 3765 | * previously errored. */ |
| 3766 | if (operation->id == 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3767 | status = PSA_ERROR_BAD_STATE; |
| 3768 | goto exit; |
| 3769 | } |
| 3770 | |
| 3771 | status = psa_driver_wrapper_verify_hash_complete(operation); |
| 3772 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3773 | /* Update ops count with work done. */ |
Paul Elliott | de1114c | 2023-02-07 12:43:11 +0000 | [diff] [blame] | 3774 | operation->num_ops = psa_driver_wrapper_verify_hash_get_num_ops( |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3775 | operation); |
| 3776 | |
Paul Elliott | ebe225c | 2023-02-10 14:32:53 +0000 | [diff] [blame] | 3777 | exit: |
| 3778 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3779 | if (status != PSA_OPERATION_INCOMPLETE) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3780 | if (status != PSA_SUCCESS) { |
| 3781 | operation->error_occurred = 1; |
| 3782 | } |
| 3783 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3784 | psa_verify_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3785 | } |
| 3786 | |
| 3787 | return status; |
| 3788 | } |
| 3789 | |
| 3790 | psa_status_t psa_verify_hash_abort( |
| 3791 | psa_verify_hash_interruptible_operation_t *operation) |
| 3792 | { |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3793 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3794 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3795 | status = psa_verify_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3796 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3797 | /* We clear the number of ops done here, so that it is not cleared when |
| 3798 | * the operation fails or succeeds, only on manual abort. */ |
| 3799 | operation->num_ops = 0; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3800 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3801 | /* Likewise, failure state. */ |
| 3802 | operation->error_occurred = 0; |
| 3803 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3804 | return status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3805 | } |
| 3806 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3807 | /****************************************************************/ |
| 3808 | /* Asymmetric interruptible cryptography internal */ |
| 3809 | /* implementations */ |
| 3810 | /****************************************************************/ |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 3811 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3812 | void mbedtls_psa_interruptible_set_max_ops(uint32_t max_ops) |
| 3813 | { |
Paul Elliott | 7cc4e81 | 2023-01-10 17:14:11 +0000 | [diff] [blame] | 3814 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3815 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3816 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3817 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3818 | |
| 3819 | /* Internal implementation uses zero to indicate infinite number max ops, |
| 3820 | * therefore avoid this value, and set to minimum possible. */ |
| 3821 | if (max_ops == 0) { |
| 3822 | max_ops = 1; |
| 3823 | } |
| 3824 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3825 | mbedtls_ecp_set_max_ops(max_ops); |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3826 | #else |
| 3827 | (void) max_ops; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3828 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3829 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3830 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3831 | } |
| 3832 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3833 | uint32_t mbedtls_psa_sign_hash_get_num_ops( |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3834 | const mbedtls_psa_sign_hash_interruptible_operation_t *operation) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3835 | { |
| 3836 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3837 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3838 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3839 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3840 | return operation->num_ops; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3841 | #else |
| 3842 | (void) operation; |
| 3843 | return 0; |
| 3844 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3845 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3846 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3847 | } |
| 3848 | |
| 3849 | uint32_t mbedtls_psa_verify_hash_get_num_ops( |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3850 | const mbedtls_psa_verify_hash_interruptible_operation_t *operation) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3851 | { |
| 3852 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3853 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3854 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3855 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3856 | return operation->num_ops; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3857 | #else |
| 3858 | (void) operation; |
| 3859 | return 0; |
| 3860 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3861 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3862 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3863 | } |
| 3864 | |
| 3865 | psa_status_t mbedtls_psa_sign_hash_start( |
| 3866 | mbedtls_psa_sign_hash_interruptible_operation_t *operation, |
| 3867 | const psa_key_attributes_t *attributes, const uint8_t *key_buffer, |
| 3868 | size_t key_buffer_size, psa_algorithm_t alg, |
| 3869 | const uint8_t *hash, size_t hash_length) |
| 3870 | { |
| 3871 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3872 | size_t required_hash_length; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3873 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 3874 | if (!PSA_KEY_TYPE_IS_ECC(attributes->type)) { |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3875 | return PSA_ERROR_NOT_SUPPORTED; |
| 3876 | } |
| 3877 | |
| 3878 | if (!PSA_ALG_IS_ECDSA(alg)) { |
Paul Elliott | 813f9cd | 2023-02-05 15:28:46 +0000 | [diff] [blame] | 3879 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3880 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3881 | |
| 3882 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3883 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3884 | defined(MBEDTLS_ECP_RESTARTABLE) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3885 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 3886 | mbedtls_ecdsa_restart_init(&operation->restart_ctx); |
| 3887 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3888 | /* Ensure num_ops is zero'ed in case of context re-use. */ |
| 3889 | operation->num_ops = 0; |
| 3890 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 3891 | status = mbedtls_psa_ecp_load_representation(attributes->type, |
| 3892 | attributes->bits, |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3893 | key_buffer, |
| 3894 | key_buffer_size, |
| 3895 | &operation->ctx); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3896 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3897 | if (status != PSA_SUCCESS) { |
| 3898 | return status; |
| 3899 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3900 | |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3901 | operation->coordinate_bytes = PSA_BITS_TO_BYTES( |
Paul Elliott | c569fc2 | 2023-02-10 13:02:54 +0000 | [diff] [blame] | 3902 | operation->ctx->grp.nbits); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3903 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3904 | psa_algorithm_t hash_alg = PSA_ALG_SIGN_GET_HASH(alg); |
Manuel Pégourié-Gonnard | 2d6d993 | 2023-03-28 11:38:08 +0200 | [diff] [blame] | 3905 | operation->md_alg = mbedtls_md_type_from_psa_alg(hash_alg); |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3906 | operation->alg = alg; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3907 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3908 | /* We only need to store the same length of hash as the private key size |
| 3909 | * here, it would be truncated by the internal implementation anyway. */ |
| 3910 | required_hash_length = (hash_length < operation->coordinate_bytes ? |
| 3911 | hash_length : operation->coordinate_bytes); |
| 3912 | |
Paul Elliott | ba70ad4 | 2023-02-15 18:23:53 +0000 | [diff] [blame] | 3913 | if (required_hash_length > sizeof(operation->hash)) { |
| 3914 | /* Shouldn't happen, but better safe than sorry. */ |
| 3915 | return PSA_ERROR_CORRUPTION_DETECTED; |
| 3916 | } |
| 3917 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3918 | memcpy(operation->hash, hash, required_hash_length); |
| 3919 | operation->hash_length = required_hash_length; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3920 | |
| 3921 | return PSA_SUCCESS; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3922 | |
| 3923 | #else |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3924 | (void) operation; |
| 3925 | (void) key_buffer; |
| 3926 | (void) key_buffer_size; |
| 3927 | (void) alg; |
| 3928 | (void) hash; |
| 3929 | (void) hash_length; |
| 3930 | (void) status; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3931 | (void) required_hash_length; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3932 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3933 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3934 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3935 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3936 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3937 | } |
| 3938 | |
| 3939 | psa_status_t mbedtls_psa_sign_hash_complete( |
| 3940 | mbedtls_psa_sign_hash_interruptible_operation_t *operation, |
| 3941 | uint8_t *signature, size_t signature_size, |
| 3942 | size_t *signature_length) |
| 3943 | { |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3944 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3945 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3946 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3947 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 3948 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 1243f93 | 2023-02-07 11:21:10 +0000 | [diff] [blame] | 3949 | mbedtls_mpi r; |
| 3950 | mbedtls_mpi s; |
| 3951 | |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3952 | mbedtls_mpi_init(&r); |
| 3953 | mbedtls_mpi_init(&s); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3954 | |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3955 | /* Ensure max_ops is set to the current value (or default). */ |
| 3956 | mbedtls_psa_interruptible_set_max_ops(psa_interruptible_get_max_ops()); |
| 3957 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 3958 | if (signature_size < 2 * operation->coordinate_bytes) { |
| 3959 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 3960 | goto exit; |
| 3961 | } |
| 3962 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3963 | if (PSA_ALG_ECDSA_IS_DETERMINISTIC(operation->alg)) { |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3964 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3965 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) |
| 3966 | status = mbedtls_to_psa_error( |
| 3967 | mbedtls_ecdsa_sign_det_restartable(&operation->ctx->grp, |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3968 | &r, |
| 3969 | &s, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3970 | &operation->ctx->d, |
| 3971 | operation->hash, |
| 3972 | operation->hash_length, |
| 3973 | operation->md_alg, |
| 3974 | mbedtls_psa_get_random, |
| 3975 | MBEDTLS_PSA_RANDOM_STATE, |
| 3976 | &operation->restart_ctx)); |
| 3977 | #else /* defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 3978 | status = PSA_ERROR_NOT_SUPPORTED; |
| 3979 | goto exit; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3980 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
| 3981 | } else { |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3982 | status = mbedtls_to_psa_error( |
| 3983 | mbedtls_ecdsa_sign_restartable(&operation->ctx->grp, |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3984 | &r, |
| 3985 | &s, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3986 | &operation->ctx->d, |
| 3987 | operation->hash, |
| 3988 | operation->hash_length, |
| 3989 | mbedtls_psa_get_random, |
| 3990 | MBEDTLS_PSA_RANDOM_STATE, |
| 3991 | mbedtls_psa_get_random, |
| 3992 | MBEDTLS_PSA_RANDOM_STATE, |
| 3993 | &operation->restart_ctx)); |
| 3994 | } |
| 3995 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3996 | /* Hide the fact that the restart context only holds a delta of number of |
| 3997 | * ops done during the last operation, not an absolute value. */ |
| 3998 | operation->num_ops += operation->restart_ctx.ecp.ops_done; |
| 3999 | |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 4000 | if (status == PSA_SUCCESS) { |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4001 | status = mbedtls_to_psa_error( |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 4002 | mbedtls_mpi_write_binary(&r, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4003 | signature, |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 4004 | operation->coordinate_bytes) |
| 4005 | ); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4006 | |
| 4007 | if (status != PSA_SUCCESS) { |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 4008 | goto exit; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4009 | } |
| 4010 | |
| 4011 | status = mbedtls_to_psa_error( |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 4012 | mbedtls_mpi_write_binary(&s, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4013 | signature + |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 4014 | operation->coordinate_bytes, |
| 4015 | operation->coordinate_bytes) |
| 4016 | ); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4017 | |
| 4018 | if (status != PSA_SUCCESS) { |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 4019 | goto exit; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4020 | } |
| 4021 | |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 4022 | *signature_length = operation->coordinate_bytes * 2; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4023 | |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 4024 | status = PSA_SUCCESS; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4025 | } |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 4026 | |
| 4027 | exit: |
| 4028 | |
| 4029 | mbedtls_mpi_free(&r); |
| 4030 | mbedtls_mpi_free(&s); |
| 4031 | return status; |
| 4032 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4033 | #else |
| 4034 | |
| 4035 | (void) operation; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4036 | (void) signature; |
| 4037 | (void) signature_size; |
| 4038 | (void) signature_length; |
| 4039 | |
| 4040 | return PSA_ERROR_NOT_SUPPORTED; |
| 4041 | |
| 4042 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 4043 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 4044 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 4045 | } |
| 4046 | |
| 4047 | psa_status_t mbedtls_psa_sign_hash_abort( |
| 4048 | mbedtls_psa_sign_hash_interruptible_operation_t *operation) |
| 4049 | { |
| 4050 | |
| 4051 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 4052 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 4053 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 4054 | |
| 4055 | if (operation->ctx) { |
| 4056 | mbedtls_ecdsa_free(operation->ctx); |
| 4057 | mbedtls_free(operation->ctx); |
Paul Elliott | f9c91a7 | 2023-02-05 18:06:38 +0000 | [diff] [blame] | 4058 | operation->ctx = NULL; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4059 | } |
| 4060 | |
| 4061 | mbedtls_ecdsa_restart_free(&operation->restart_ctx); |
| 4062 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 4063 | operation->num_ops = 0; |
| 4064 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4065 | return PSA_SUCCESS; |
| 4066 | |
| 4067 | #else |
| 4068 | |
| 4069 | (void) operation; |
| 4070 | |
| 4071 | return PSA_ERROR_NOT_SUPPORTED; |
| 4072 | |
| 4073 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 4074 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 4075 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 4076 | } |
| 4077 | |
| 4078 | psa_status_t mbedtls_psa_verify_hash_start( |
| 4079 | mbedtls_psa_verify_hash_interruptible_operation_t *operation, |
| 4080 | const psa_key_attributes_t *attributes, |
| 4081 | const uint8_t *key_buffer, size_t key_buffer_size, |
| 4082 | psa_algorithm_t alg, |
| 4083 | const uint8_t *hash, size_t hash_length, |
| 4084 | const uint8_t *signature, size_t signature_length) |
| 4085 | { |
| 4086 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 4087 | size_t coordinate_bytes = 0; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 4088 | size_t required_hash_length = 0; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4089 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 4090 | if (!PSA_KEY_TYPE_IS_ECC(attributes->type)) { |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4091 | return PSA_ERROR_NOT_SUPPORTED; |
| 4092 | } |
| 4093 | |
| 4094 | if (!PSA_ALG_IS_ECDSA(alg)) { |
Paul Elliott | 813f9cd | 2023-02-05 15:28:46 +0000 | [diff] [blame] | 4095 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4096 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4097 | |
| 4098 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4099 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 4100 | defined(MBEDTLS_ECP_RESTARTABLE) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4101 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 4102 | mbedtls_ecdsa_restart_init(&operation->restart_ctx); |
| 4103 | mbedtls_mpi_init(&operation->r); |
| 4104 | mbedtls_mpi_init(&operation->s); |
| 4105 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 4106 | /* Ensure num_ops is zero'ed in case of context re-use. */ |
| 4107 | operation->num_ops = 0; |
| 4108 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 4109 | status = mbedtls_psa_ecp_load_representation(attributes->type, |
| 4110 | attributes->bits, |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4111 | key_buffer, |
| 4112 | key_buffer_size, |
| 4113 | &operation->ctx); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4114 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4115 | if (status != PSA_SUCCESS) { |
| 4116 | return status; |
| 4117 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4118 | |
Paul Elliott | c569fc2 | 2023-02-10 13:02:54 +0000 | [diff] [blame] | 4119 | coordinate_bytes = PSA_BITS_TO_BYTES(operation->ctx->grp.nbits); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4120 | |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 4121 | if (signature_length != 2 * coordinate_bytes) { |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4122 | return PSA_ERROR_INVALID_SIGNATURE; |
| 4123 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4124 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4125 | status = mbedtls_to_psa_error( |
| 4126 | mbedtls_mpi_read_binary(&operation->r, |
| 4127 | signature, |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 4128 | coordinate_bytes)); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4129 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4130 | if (status != PSA_SUCCESS) { |
| 4131 | return status; |
| 4132 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4133 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4134 | status = mbedtls_to_psa_error( |
| 4135 | mbedtls_mpi_read_binary(&operation->s, |
| 4136 | signature + |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 4137 | coordinate_bytes, |
| 4138 | coordinate_bytes)); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4139 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4140 | if (status != PSA_SUCCESS) { |
| 4141 | return status; |
| 4142 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4143 | |
Paul Elliott | 2c9843f | 2023-02-15 17:32:42 +0000 | [diff] [blame] | 4144 | status = mbedtls_psa_ecp_load_public_part(operation->ctx); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4145 | |
Paul Elliott | 2c9843f | 2023-02-15 17:32:42 +0000 | [diff] [blame] | 4146 | if (status != PSA_SUCCESS) { |
| 4147 | return status; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4148 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4149 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 4150 | /* We only need to store the same length of hash as the private key size |
| 4151 | * here, it would be truncated by the internal implementation anyway. */ |
| 4152 | required_hash_length = (hash_length < coordinate_bytes ? hash_length : |
| 4153 | coordinate_bytes); |
| 4154 | |
Paul Elliott | ba70ad4 | 2023-02-15 18:23:53 +0000 | [diff] [blame] | 4155 | if (required_hash_length > sizeof(operation->hash)) { |
| 4156 | /* Shouldn't happen, but better safe than sorry. */ |
| 4157 | return PSA_ERROR_CORRUPTION_DETECTED; |
| 4158 | } |
| 4159 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 4160 | memcpy(operation->hash, hash, required_hash_length); |
| 4161 | operation->hash_length = required_hash_length; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4162 | |
| 4163 | return PSA_SUCCESS; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4164 | #else |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4165 | (void) operation; |
| 4166 | (void) key_buffer; |
| 4167 | (void) key_buffer_size; |
| 4168 | (void) alg; |
| 4169 | (void) hash; |
| 4170 | (void) hash_length; |
| 4171 | (void) signature; |
| 4172 | (void) signature_length; |
| 4173 | (void) status; |
Paul Elliott | 1243f93 | 2023-02-07 11:21:10 +0000 | [diff] [blame] | 4174 | (void) coordinate_bytes; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 4175 | (void) required_hash_length; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4176 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 4177 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4178 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 4179 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 4180 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4181 | } |
| 4182 | |
| 4183 | psa_status_t mbedtls_psa_verify_hash_complete( |
| 4184 | mbedtls_psa_verify_hash_interruptible_operation_t *operation) |
| 4185 | { |
| 4186 | |
| 4187 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 4188 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 4189 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 4190 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 4191 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4192 | |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 4193 | /* Ensure max_ops is set to the current value (or default). */ |
| 4194 | mbedtls_psa_interruptible_set_max_ops(psa_interruptible_get_max_ops()); |
| 4195 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 4196 | status = mbedtls_to_psa_error( |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4197 | mbedtls_ecdsa_verify_restartable(&operation->ctx->grp, |
| 4198 | operation->hash, |
| 4199 | operation->hash_length, |
| 4200 | &operation->ctx->Q, |
| 4201 | &operation->r, |
| 4202 | &operation->s, |
| 4203 | &operation->restart_ctx)); |
| 4204 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 4205 | /* Hide the fact that the restart context only holds a delta of number of |
| 4206 | * ops done during the last operation, not an absolute value. */ |
| 4207 | operation->num_ops += operation->restart_ctx.ecp.ops_done; |
| 4208 | |
| 4209 | return status; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4210 | #else |
| 4211 | (void) operation; |
| 4212 | |
| 4213 | return PSA_ERROR_NOT_SUPPORTED; |
| 4214 | |
| 4215 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 4216 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 4217 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 4218 | } |
| 4219 | |
| 4220 | psa_status_t mbedtls_psa_verify_hash_abort( |
| 4221 | mbedtls_psa_verify_hash_interruptible_operation_t *operation) |
| 4222 | { |
| 4223 | |
| 4224 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 4225 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 4226 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 4227 | |
| 4228 | if (operation->ctx) { |
| 4229 | mbedtls_ecdsa_free(operation->ctx); |
| 4230 | mbedtls_free(operation->ctx); |
Paul Elliott | f9c91a7 | 2023-02-05 18:06:38 +0000 | [diff] [blame] | 4231 | operation->ctx = NULL; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4232 | } |
| 4233 | |
| 4234 | mbedtls_ecdsa_restart_free(&operation->restart_ctx); |
| 4235 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 4236 | operation->num_ops = 0; |
| 4237 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4238 | mbedtls_mpi_free(&operation->r); |
| 4239 | mbedtls_mpi_free(&operation->s); |
| 4240 | |
| 4241 | return PSA_SUCCESS; |
| 4242 | |
| 4243 | #else |
| 4244 | (void) operation; |
| 4245 | |
| 4246 | return PSA_ERROR_NOT_SUPPORTED; |
| 4247 | |
| 4248 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 4249 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 4250 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 4251 | } |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 4252 | |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4253 | static psa_status_t psa_generate_random_internal(uint8_t *output, |
| 4254 | size_t output_size) |
| 4255 | { |
| 4256 | GUARD_MODULE_INITIALIZED; |
| 4257 | |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4258 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
| 4259 | |
David Horstmann | db90914 | 2024-03-12 16:07:08 +0000 | [diff] [blame] | 4260 | psa_status_t status; |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4261 | size_t output_length = 0; |
| 4262 | status = mbedtls_psa_external_get_random(&global_data.rng, |
| 4263 | output, output_size, |
| 4264 | &output_length); |
| 4265 | if (status != PSA_SUCCESS) { |
David Horstmann | db90914 | 2024-03-12 16:07:08 +0000 | [diff] [blame] | 4266 | return status; |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4267 | } |
| 4268 | /* Breaking up a request into smaller chunks is currently not supported |
| 4269 | * for the external RNG interface. */ |
| 4270 | if (output_length != output_size) { |
David Horstmann | db90914 | 2024-03-12 16:07:08 +0000 | [diff] [blame] | 4271 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4272 | } |
David Horstmann | db90914 | 2024-03-12 16:07:08 +0000 | [diff] [blame] | 4273 | return PSA_SUCCESS; |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4274 | |
| 4275 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
| 4276 | |
| 4277 | while (output_size > 0) { |
David Horstmann | 93fa4e1 | 2024-03-12 15:02:28 +0000 | [diff] [blame] | 4278 | int ret = MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED; |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4279 | size_t request_size = |
| 4280 | (output_size > MBEDTLS_PSA_RANDOM_MAX_REQUEST ? |
| 4281 | MBEDTLS_PSA_RANDOM_MAX_REQUEST : |
| 4282 | output_size); |
David Horstmann | 93fa4e1 | 2024-03-12 15:02:28 +0000 | [diff] [blame] | 4283 | #if defined(MBEDTLS_CTR_DRBG_C) |
| 4284 | ret = mbedtls_ctr_drbg_random(&global_data.rng.drbg, output, request_size); |
| 4285 | #elif defined(MBEDTLS_HMAC_DRBG_C) |
| 4286 | ret = mbedtls_hmac_drbg_random(&global_data.rng.drbg, output, request_size); |
| 4287 | #endif /* !MBEDTLS_CTR_DRBG_C && !MBEDTLS_HMAC_DRBG_C */ |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4288 | if (ret != 0) { |
David Horstmann | 93fa4e1 | 2024-03-12 15:02:28 +0000 | [diff] [blame] | 4289 | return mbedtls_to_psa_error(ret); |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4290 | } |
| 4291 | output_size -= request_size; |
| 4292 | output += request_size; |
| 4293 | } |
David Horstmann | 93fa4e1 | 2024-03-12 15:02:28 +0000 | [diff] [blame] | 4294 | return PSA_SUCCESS; |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4295 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4296 | } |
| 4297 | |
| 4298 | |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4299 | /****************************************************************/ |
| 4300 | /* Symmetric cryptography */ |
| 4301 | /****************************************************************/ |
| 4302 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4303 | static psa_status_t psa_cipher_setup(psa_cipher_operation_t *operation, |
| 4304 | mbedtls_svc_key_id_t key, |
| 4305 | psa_algorithm_t alg, |
| 4306 | mbedtls_operation_t cipher_operation) |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4307 | { |
| 4308 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4309 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 4310 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4311 | psa_key_usage_t usage = (cipher_operation == MBEDTLS_ENCRYPT ? |
| 4312 | PSA_KEY_USAGE_ENCRYPT : |
| 4313 | PSA_KEY_USAGE_DECRYPT); |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4314 | |
| 4315 | /* A context must be freshly initialized before it can be set up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4316 | if (operation->id != 0) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 4317 | status = PSA_ERROR_BAD_STATE; |
| 4318 | goto exit; |
| 4319 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4320 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4321 | if (!PSA_ALG_IS_CIPHER(alg)) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 4322 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4323 | goto exit; |
| 4324 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4325 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4326 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, usage, alg); |
| 4327 | if (status != PSA_SUCCESS) { |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4328 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4329 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4330 | |
Ronald Cron | 49fafa9 | 2021-03-10 08:34:23 +0100 | [diff] [blame] | 4331 | /* Initialize the operation struct members, except for id. The id member |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4332 | * is used to indicate to psa_cipher_abort that there are resources to free, |
Ronald Cron | 49fafa9 | 2021-03-10 08:34:23 +0100 | [diff] [blame] | 4333 | * so we only set it (in the driver wrapper) after resources have been |
| 4334 | * allocated/initialized. */ |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4335 | operation->iv_set = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4336 | if (alg == PSA_ALG_ECB_NO_PADDING) { |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4337 | operation->iv_required = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4338 | } else { |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4339 | operation->iv_required = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4340 | } |
| 4341 | operation->default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg); |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4342 | |
| 4343 | /* Try doing the operation through a driver before using software fallback. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4344 | if (cipher_operation == MBEDTLS_ENCRYPT) { |
| 4345 | status = psa_driver_wrapper_cipher_encrypt_setup(operation, |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 4346 | &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4347 | slot->key.data, |
| 4348 | slot->key.bytes, |
| 4349 | alg); |
| 4350 | } else { |
| 4351 | status = psa_driver_wrapper_cipher_decrypt_setup(operation, |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 4352 | &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4353 | slot->key.data, |
| 4354 | slot->key.bytes, |
| 4355 | alg); |
| 4356 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4357 | |
Gilles Peskine | 9ab61b6 | 2019-02-25 17:43:14 +0100 | [diff] [blame] | 4358 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4359 | if (status != PSA_SUCCESS) { |
| 4360 | psa_cipher_abort(operation); |
| 4361 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 4362 | |
Ryan Everett | c0053cc | 2024-02-14 16:27:13 +0000 | [diff] [blame] | 4363 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 4364 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4365 | return (status == PSA_SUCCESS) ? unlock_status : status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4366 | } |
| 4367 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4368 | psa_status_t psa_cipher_encrypt_setup(psa_cipher_operation_t *operation, |
| 4369 | mbedtls_svc_key_id_t key, |
| 4370 | psa_algorithm_t alg) |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4371 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4372 | return psa_cipher_setup(operation, key, alg, MBEDTLS_ENCRYPT); |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4373 | } |
| 4374 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4375 | psa_status_t psa_cipher_decrypt_setup(psa_cipher_operation_t *operation, |
| 4376 | mbedtls_svc_key_id_t key, |
| 4377 | psa_algorithm_t alg) |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4378 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4379 | return psa_cipher_setup(operation, key, alg, MBEDTLS_DECRYPT); |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4380 | } |
| 4381 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4382 | psa_status_t psa_cipher_generate_iv(psa_cipher_operation_t *operation, |
Gabor Mezei | 358eb21 | 2024-02-07 18:10:13 +0100 | [diff] [blame] | 4383 | uint8_t *iv_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4384 | size_t iv_size, |
| 4385 | size_t *iv_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4386 | { |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4387 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Sergey | bef1f63 | 2023-03-06 15:25:06 -0700 | [diff] [blame] | 4388 | size_t default_iv_length = 0; |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4389 | |
Gabor Mezei | 358eb21 | 2024-02-07 18:10:13 +0100 | [diff] [blame] | 4390 | LOCAL_OUTPUT_DECLARE(iv_external, iv); |
| 4391 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4392 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4393 | status = PSA_ERROR_BAD_STATE; |
| 4394 | goto exit; |
Ronald Cron | c45b4af | 2020-09-29 16:18:05 +0200 | [diff] [blame] | 4395 | } |
| 4396 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4397 | if (operation->iv_set || !operation->iv_required) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4398 | status = PSA_ERROR_BAD_STATE; |
| 4399 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4400 | } |
Steven Cooreman | d3feccd | 2020-09-01 15:56:14 +0200 | [diff] [blame] | 4401 | |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4402 | default_iv_length = operation->default_iv_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4403 | if (iv_size < default_iv_length) { |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4404 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 4405 | goto exit; |
| 4406 | } |
Gilles Peskine | e553c65 | 2018-06-04 16:22:46 +0200 | [diff] [blame] | 4407 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4408 | if (default_iv_length > PSA_CIPHER_IV_MAX_SIZE) { |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4409 | status = PSA_ERROR_GENERIC_ERROR; |
| 4410 | goto exit; |
| 4411 | } |
| 4412 | |
Gabor Mezei | 358eb21 | 2024-02-07 18:10:13 +0100 | [diff] [blame] | 4413 | LOCAL_OUTPUT_ALLOC(iv_external, default_iv_length, iv); |
| 4414 | |
Gabor Mezei | 1b5b58d | 2024-03-04 17:15:08 +0100 | [diff] [blame] | 4415 | status = psa_generate_random_internal(iv, default_iv_length); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4416 | if (status != PSA_SUCCESS) { |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4417 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4418 | } |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4419 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4420 | status = psa_driver_wrapper_cipher_set_iv(operation, |
Gabor Mezei | 358eb21 | 2024-02-07 18:10:13 +0100 | [diff] [blame] | 4421 | iv, default_iv_length); |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4422 | |
| 4423 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4424 | if (status == PSA_SUCCESS) { |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4425 | *iv_length = default_iv_length; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4426 | operation->iv_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4427 | } else { |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4428 | *iv_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4429 | psa_cipher_abort(operation); |
Gabor Mezei | 358eb21 | 2024-02-07 18:10:13 +0100 | [diff] [blame] | 4430 | if (iv != NULL) { |
| 4431 | mbedtls_platform_zeroize(iv, default_iv_length); |
| 4432 | } |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4433 | } |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4434 | |
Gabor Mezei | 358eb21 | 2024-02-07 18:10:13 +0100 | [diff] [blame] | 4435 | LOCAL_OUTPUT_FREE(iv_external, iv); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4436 | return status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4437 | } |
| 4438 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4439 | psa_status_t psa_cipher_set_iv(psa_cipher_operation_t *operation, |
Gabor Mezei | 7abf8ee | 2024-02-01 10:39:26 +0100 | [diff] [blame] | 4440 | const uint8_t *iv_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4441 | size_t iv_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4442 | { |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4443 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | c45b4af | 2020-09-29 16:18:05 +0200 | [diff] [blame] | 4444 | |
Gabor Mezei | 7abf8ee | 2024-02-01 10:39:26 +0100 | [diff] [blame] | 4445 | LOCAL_INPUT_DECLARE(iv_external, iv); |
| 4446 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4447 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4448 | status = PSA_ERROR_BAD_STATE; |
| 4449 | goto exit; |
| 4450 | } |
Ronald Cron | c45b4af | 2020-09-29 16:18:05 +0200 | [diff] [blame] | 4451 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4452 | if (operation->iv_set || !operation->iv_required) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4453 | status = PSA_ERROR_BAD_STATE; |
| 4454 | goto exit; |
| 4455 | } |
Ronald Cron | a0d6817 | 2021-03-26 10:15:08 +0100 | [diff] [blame] | 4456 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4457 | if (iv_length > PSA_CIPHER_IV_MAX_SIZE) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4458 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4459 | goto exit; |
| 4460 | } |
Steven Cooreman | d3feccd | 2020-09-01 15:56:14 +0200 | [diff] [blame] | 4461 | |
Gabor Mezei | 7abf8ee | 2024-02-01 10:39:26 +0100 | [diff] [blame] | 4462 | LOCAL_INPUT_ALLOC(iv_external, iv_length, iv); |
| 4463 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4464 | status = psa_driver_wrapper_cipher_set_iv(operation, |
| 4465 | iv, |
| 4466 | iv_length); |
Steven Cooreman | d3feccd | 2020-09-01 15:56:14 +0200 | [diff] [blame] | 4467 | |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4468 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4469 | if (status == PSA_SUCCESS) { |
itayzafrir | 534bd7c | 2018-08-02 13:56:32 +0300 | [diff] [blame] | 4470 | operation->iv_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4471 | } else { |
| 4472 | psa_cipher_abort(operation); |
| 4473 | } |
Gabor Mezei | 7abf8ee | 2024-02-01 10:39:26 +0100 | [diff] [blame] | 4474 | |
| 4475 | LOCAL_INPUT_FREE(iv_external, iv); |
| 4476 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4477 | return status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4478 | } |
| 4479 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4480 | psa_status_t psa_cipher_update(psa_cipher_operation_t *operation, |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4481 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4482 | size_t input_length, |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4483 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4484 | size_t output_size, |
| 4485 | size_t *output_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4486 | { |
Steven Cooreman | ffecb7b | 2020-08-25 15:13:13 +0200 | [diff] [blame] | 4487 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4488 | |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4489 | LOCAL_INPUT_DECLARE(input_external, input); |
| 4490 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 4491 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4492 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4493 | status = PSA_ERROR_BAD_STATE; |
| 4494 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4495 | } |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4496 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4497 | if (operation->iv_required && !operation->iv_set) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4498 | status = PSA_ERROR_BAD_STATE; |
| 4499 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4500 | } |
Jaeden Amero | ab43997 | 2019-02-15 14:12:05 +0000 | [diff] [blame] | 4501 | |
Gabor Mezei | 8b8e485 | 2024-01-31 17:45:29 +0100 | [diff] [blame] | 4502 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
Gabor Mezei | 0b04116 | 2024-02-29 10:08:16 +0000 | [diff] [blame] | 4503 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
Gabor Mezei | 8b8e485 | 2024-01-31 17:45:29 +0100 | [diff] [blame] | 4504 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4505 | status = psa_driver_wrapper_cipher_update(operation, |
| 4506 | input, |
| 4507 | input_length, |
| 4508 | output, |
| 4509 | output_size, |
| 4510 | output_length); |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4511 | |
| 4512 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4513 | if (status != PSA_SUCCESS) { |
| 4514 | psa_cipher_abort(operation); |
| 4515 | } |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4516 | |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4517 | LOCAL_INPUT_FREE(input_external, input); |
| 4518 | LOCAL_OUTPUT_FREE(output_external, output); |
| 4519 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4520 | return status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4521 | } |
| 4522 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4523 | psa_status_t psa_cipher_finish(psa_cipher_operation_t *operation, |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4524 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4525 | size_t output_size, |
| 4526 | size_t *output_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4527 | { |
David Saada | b4ecc27 | 2019-02-14 13:48:10 +0200 | [diff] [blame] | 4528 | psa_status_t status = PSA_ERROR_GENERIC_ERROR; |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4529 | |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4530 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 4531 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4532 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4533 | status = PSA_ERROR_BAD_STATE; |
| 4534 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4535 | } |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4536 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4537 | if (operation->iv_required && !operation->iv_set) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4538 | status = PSA_ERROR_BAD_STATE; |
| 4539 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4540 | } |
Moran Peker | bed71a2 | 2018-04-22 20:19:20 +0300 | [diff] [blame] | 4541 | |
Gabor Mezei | 0b04116 | 2024-02-29 10:08:16 +0000 | [diff] [blame] | 4542 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
Gabor Mezei | 8b8e485 | 2024-01-31 17:45:29 +0100 | [diff] [blame] | 4543 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4544 | status = psa_driver_wrapper_cipher_finish(operation, |
| 4545 | output, |
| 4546 | output_size, |
| 4547 | output_length); |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4548 | |
| 4549 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4550 | if (status == PSA_SUCCESS) { |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4551 | status = psa_cipher_abort(operation); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4552 | } else { |
Steven Cooreman | ef8575e | 2020-09-11 11:44:50 +0200 | [diff] [blame] | 4553 | *output_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4554 | (void) psa_cipher_abort(operation); |
Steven Cooreman | ef8575e | 2020-09-11 11:44:50 +0200 | [diff] [blame] | 4555 | } |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4556 | |
| 4557 | LOCAL_OUTPUT_FREE(output_external, output); |
| 4558 | |
| 4559 | return status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4560 | } |
| 4561 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4562 | psa_status_t psa_cipher_abort(psa_cipher_operation_t *operation) |
Gilles Peskine | e553c65 | 2018-06-04 16:22:46 +0200 | [diff] [blame] | 4563 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4564 | if (operation->id == 0) { |
Steven Cooreman | a07b997 | 2020-09-10 14:54:14 +0200 | [diff] [blame] | 4565 | /* The object has (apparently) been initialized but it is not (yet) |
Gilles Peskine | 8173631 | 2018-06-26 15:04:31 +0200 | [diff] [blame] | 4566 | * in use. It's ok to call abort on such an object, and there's |
| 4567 | * nothing to do. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4568 | return PSA_SUCCESS; |
Gilles Peskine | 8173631 | 2018-06-26 15:04:31 +0200 | [diff] [blame] | 4569 | } |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 4570 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4571 | psa_driver_wrapper_cipher_abort(operation); |
Gilles Peskine | e553c65 | 2018-06-04 16:22:46 +0200 | [diff] [blame] | 4572 | |
Ronald Cron | 49fafa9 | 2021-03-10 08:34:23 +0100 | [diff] [blame] | 4573 | operation->id = 0; |
Moran Peker | ad9d82c | 2018-04-30 12:31:04 +0300 | [diff] [blame] | 4574 | operation->iv_set = 0; |
Moran Peker | ad9d82c | 2018-04-30 12:31:04 +0300 | [diff] [blame] | 4575 | operation->iv_required = 0; |
Moran Peker | 41deec4 | 2018-04-04 15:43:05 +0300 | [diff] [blame] | 4576 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4577 | return PSA_SUCCESS; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4578 | } |
| 4579 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4580 | psa_status_t psa_cipher_encrypt(mbedtls_svc_key_id_t key, |
| 4581 | psa_algorithm_t alg, |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 4582 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4583 | size_t input_length, |
David Horstmann | 36df4b2 | 2023-12-13 15:55:25 +0000 | [diff] [blame] | 4584 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4585 | size_t output_size, |
| 4586 | size_t *output_length) |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4587 | { |
| 4588 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4589 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4590 | psa_key_slot_t *slot = NULL; |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4591 | uint8_t local_iv[PSA_CIPHER_IV_MAX_SIZE]; |
| 4592 | size_t default_iv_length = 0; |
gabor-mezei-arm | 6f4e5bb | 2021-06-25 15:21:11 +0200 | [diff] [blame] | 4593 | |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 4594 | LOCAL_INPUT_DECLARE(input_external, input); |
| 4595 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 4596 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4597 | if (!PSA_ALG_IS_CIPHER(alg)) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4598 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4599 | goto exit; |
| 4600 | } |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4601 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4602 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 4603 | PSA_KEY_USAGE_ENCRYPT, |
| 4604 | alg); |
| 4605 | if (status != PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4606 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4607 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4608 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4609 | default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg); |
| 4610 | if (default_iv_length > PSA_CIPHER_IV_MAX_SIZE) { |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4611 | status = PSA_ERROR_GENERIC_ERROR; |
| 4612 | goto exit; |
| 4613 | } |
| 4614 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4615 | if (default_iv_length > 0) { |
| 4616 | if (output_size < default_iv_length) { |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4617 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 4618 | goto exit; |
| 4619 | } |
| 4620 | |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 4621 | status = psa_generate_random_internal(local_iv, default_iv_length); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4622 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4623 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4624 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4625 | } |
| 4626 | |
Gabor Mezei | 8b8e485 | 2024-01-31 17:45:29 +0100 | [diff] [blame] | 4627 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 4628 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
| 4629 | |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4630 | status = psa_driver_wrapper_cipher_encrypt( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 4631 | &slot->attr, slot->key.data, slot->key.bytes, |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4632 | alg, local_iv, default_iv_length, input, input_length, |
Ronald Cron | afbc7ed | 2023-01-24 16:02:04 +0100 | [diff] [blame] | 4633 | psa_crypto_buffer_offset(output, default_iv_length), |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4634 | output_size - default_iv_length, output_length); |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4635 | |
| 4636 | exit: |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 4637 | unlock_status = psa_unregister_read_under_mutex(slot); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4638 | if (status == PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4639 | status = unlock_status; |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4640 | } |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4641 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4642 | if (status == PSA_SUCCESS) { |
| 4643 | if (default_iv_length > 0) { |
| 4644 | memcpy(output, local_iv, default_iv_length); |
| 4645 | } |
| 4646 | *output_length += default_iv_length; |
| 4647 | } else { |
| 4648 | *output_length = 0; |
| 4649 | } |
| 4650 | |
David Horstmann | 62a56d9 | 2023-12-14 18:12:47 +0000 | [diff] [blame] | 4651 | LOCAL_INPUT_FREE(input_external, input); |
| 4652 | LOCAL_OUTPUT_FREE(output_external, output); |
David Horstmann | c6977b4 | 2023-11-27 17:43:05 +0000 | [diff] [blame] | 4653 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4654 | return status; |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4655 | } |
| 4656 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4657 | psa_status_t psa_cipher_decrypt(mbedtls_svc_key_id_t key, |
| 4658 | psa_algorithm_t alg, |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4659 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4660 | size_t input_length, |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4661 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4662 | size_t output_size, |
| 4663 | size_t *output_length) |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4664 | { |
| 4665 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4666 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4667 | psa_key_slot_t *slot = NULL; |
gabor-mezei-arm | 6f4e5bb | 2021-06-25 15:21:11 +0200 | [diff] [blame] | 4668 | |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4669 | LOCAL_INPUT_DECLARE(input_external, input); |
| 4670 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 4671 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4672 | if (!PSA_ALG_IS_CIPHER(alg)) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4673 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4674 | goto exit; |
| 4675 | } |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4676 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4677 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 4678 | PSA_KEY_USAGE_DECRYPT, |
| 4679 | alg); |
| 4680 | if (status != PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4681 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4682 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4683 | |
Gilles Peskine | b47c3b3 | 2024-06-26 13:16:33 +0200 | [diff] [blame] | 4684 | if (input_length < PSA_CIPHER_IV_LENGTH(slot->attr.type, alg)) { |
gabor-mezei-arm | 258ae07 | 2021-06-25 15:25:38 +0200 | [diff] [blame] | 4685 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4686 | goto exit; |
| 4687 | } |
| 4688 | |
Gabor Mezei | 8b8e485 | 2024-01-31 17:45:29 +0100 | [diff] [blame] | 4689 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 4690 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
| 4691 | |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4692 | status = psa_driver_wrapper_cipher_decrypt( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 4693 | &slot->attr, slot->key.data, slot->key.bytes, |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4694 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4695 | output, output_size, output_length); |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4696 | |
gabor-mezei-arm | 258ae07 | 2021-06-25 15:25:38 +0200 | [diff] [blame] | 4697 | exit: |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 4698 | unlock_status = psa_unregister_read_under_mutex(slot); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4699 | if (status == PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4700 | status = unlock_status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4701 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4702 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4703 | if (status != PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4704 | *output_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4705 | } |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4706 | |
Gabor Mezei | 212eb08 | 2024-01-24 16:56:00 +0100 | [diff] [blame] | 4707 | LOCAL_INPUT_FREE(input_external, input); |
| 4708 | LOCAL_OUTPUT_FREE(output_external, output); |
| 4709 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4710 | return status; |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4711 | } |
| 4712 | |
| 4713 | |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4714 | /****************************************************************/ |
| 4715 | /* AEAD */ |
| 4716 | /****************************************************************/ |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 4717 | |
Paul Elliott | baff51c | 2021-09-28 17:44:45 +0100 | [diff] [blame] | 4718 | /* Helper function to get the base algorithm from its variants. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4719 | static psa_algorithm_t psa_aead_get_base_algorithm(psa_algorithm_t alg) |
Paul Elliott | baff51c | 2021-09-28 17:44:45 +0100 | [diff] [blame] | 4720 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4721 | return PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg); |
Paul Elliott | baff51c | 2021-09-28 17:44:45 +0100 | [diff] [blame] | 4722 | } |
| 4723 | |
| 4724 | /* Helper function to perform common nonce length checks. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4725 | static psa_status_t psa_aead_check_nonce_length(psa_algorithm_t alg, |
| 4726 | size_t nonce_length) |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4727 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4728 | psa_algorithm_t base_alg = psa_aead_get_base_algorithm(alg); |
Paul Elliott | baff51c | 2021-09-28 17:44:45 +0100 | [diff] [blame] | 4729 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4730 | switch (base_alg) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4731 | #if defined(PSA_WANT_ALG_GCM) |
| 4732 | case PSA_ALG_GCM: |
| 4733 | /* Not checking max nonce size here as GCM spec allows almost |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4734 | * arbitrarily large nonces. Please note that we do not generally |
| 4735 | * recommend the usage of nonces of greater length than |
| 4736 | * PSA_AEAD_NONCE_MAX_SIZE, as large nonces are hashed to a shorter |
| 4737 | * size, which can then lead to collisions if you encrypt a very |
| 4738 | * large number of messages.*/ |
| 4739 | if (nonce_length != 0) { |
| 4740 | return PSA_SUCCESS; |
| 4741 | } |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4742 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4743 | #endif /* PSA_WANT_ALG_GCM */ |
| 4744 | #if defined(PSA_WANT_ALG_CCM) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4745 | case PSA_ALG_CCM: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4746 | if (nonce_length >= 7 && nonce_length <= 13) { |
| 4747 | return PSA_SUCCESS; |
| 4748 | } |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4749 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4750 | #endif /* PSA_WANT_ALG_CCM */ |
| 4751 | #if defined(PSA_WANT_ALG_CHACHA20_POLY1305) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4752 | case PSA_ALG_CHACHA20_POLY1305: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4753 | if (nonce_length == 12) { |
| 4754 | return PSA_SUCCESS; |
| 4755 | } else if (nonce_length == 8) { |
| 4756 | return PSA_ERROR_NOT_SUPPORTED; |
| 4757 | } |
Bence Szépkúti | 6d48e20 | 2021-11-15 20:04:15 +0100 | [diff] [blame] | 4758 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4759 | #endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */ |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4760 | default: |
Przemek Stekiel | 4c49927 | 2022-09-27 13:55:37 +0200 | [diff] [blame] | 4761 | (void) nonce_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4762 | return PSA_ERROR_NOT_SUPPORTED; |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4763 | } |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4764 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4765 | return PSA_ERROR_INVALID_ARGUMENT; |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4766 | } |
| 4767 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4768 | static psa_status_t psa_aead_check_algorithm(psa_algorithm_t alg) |
Bence Szépkúti | aa3a6e4 | 2022-01-13 16:26:03 +0100 | [diff] [blame] | 4769 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4770 | if (!PSA_ALG_IS_AEAD(alg) || PSA_ALG_IS_WILDCARD(alg)) { |
| 4771 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4772 | } |
Bence Szépkúti | 08f3465 | 2021-12-08 21:07:13 +0100 | [diff] [blame] | 4773 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4774 | return PSA_SUCCESS; |
Bence Szépkúti | 08f3465 | 2021-12-08 21:07:13 +0100 | [diff] [blame] | 4775 | } |
| 4776 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4777 | psa_status_t psa_aead_encrypt(mbedtls_svc_key_id_t key, |
| 4778 | psa_algorithm_t alg, |
David Horstmann | 9d09a02 | 2023-11-28 19:25:00 +0000 | [diff] [blame] | 4779 | const uint8_t *nonce_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4780 | size_t nonce_length, |
David Horstmann | 9d09a02 | 2023-11-28 19:25:00 +0000 | [diff] [blame] | 4781 | const uint8_t *additional_data_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4782 | size_t additional_data_length, |
David Horstmann | 9d09a02 | 2023-11-28 19:25:00 +0000 | [diff] [blame] | 4783 | const uint8_t *plaintext_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4784 | size_t plaintext_length, |
David Horstmann | 9d09a02 | 2023-11-28 19:25:00 +0000 | [diff] [blame] | 4785 | uint8_t *ciphertext_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4786 | size_t ciphertext_size, |
| 4787 | size_t *ciphertext_length) |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4788 | { |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4789 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4790 | psa_key_slot_t *slot; |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4791 | |
David Horstmann | 9d09a02 | 2023-11-28 19:25:00 +0000 | [diff] [blame] | 4792 | LOCAL_INPUT_DECLARE(nonce_external, nonce); |
| 4793 | LOCAL_INPUT_DECLARE(additional_data_external, additional_data); |
| 4794 | LOCAL_INPUT_DECLARE(plaintext_external, plaintext); |
| 4795 | LOCAL_OUTPUT_DECLARE(ciphertext_external, ciphertext); |
| 4796 | |
mohammad1603 | f08a550 | 2018-06-03 15:05:47 +0300 | [diff] [blame] | 4797 | *ciphertext_length = 0; |
mohammad1603 | e58e684 | 2018-05-09 04:58:32 -0700 | [diff] [blame] | 4798 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4799 | status = psa_aead_check_algorithm(alg); |
| 4800 | if (status != PSA_SUCCESS) { |
| 4801 | return status; |
| 4802 | } |
Steven Cooreman | ea7ab13 | 2021-03-17 16:28:00 +0100 | [diff] [blame] | 4803 | |
Ronald Cron | 9a98616 | 2021-03-26 12:40:07 +0100 | [diff] [blame] | 4804 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4805 | key, &slot, PSA_KEY_USAGE_ENCRYPT, alg); |
| 4806 | if (status != PSA_SUCCESS) { |
| 4807 | return status; |
| 4808 | } |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4809 | |
David Horstmann | 9d09a02 | 2023-11-28 19:25:00 +0000 | [diff] [blame] | 4810 | LOCAL_INPUT_ALLOC(nonce_external, nonce_length, nonce); |
| 4811 | LOCAL_INPUT_ALLOC(additional_data_external, additional_data_length, additional_data); |
| 4812 | LOCAL_INPUT_ALLOC(plaintext_external, plaintext_length, plaintext); |
| 4813 | LOCAL_OUTPUT_ALLOC(ciphertext_external, ciphertext_size, ciphertext); |
| 4814 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4815 | status = psa_aead_check_nonce_length(alg, nonce_length); |
| 4816 | if (status != PSA_SUCCESS) { |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4817 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4818 | } |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4819 | |
Ronald Cron | de82281 | 2021-03-17 16:08:20 +0100 | [diff] [blame] | 4820 | status = psa_driver_wrapper_aead_encrypt( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 4821 | &slot->attr, slot->key.data, slot->key.bytes, |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4822 | alg, |
| 4823 | nonce, nonce_length, |
| 4824 | additional_data, additional_data_length, |
| 4825 | plaintext, plaintext_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4826 | ciphertext, ciphertext_size, ciphertext_length); |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4827 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4828 | if (status != PSA_SUCCESS && ciphertext_size != 0) { |
| 4829 | memset(ciphertext, 0, ciphertext_size); |
| 4830 | } |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4831 | |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4832 | exit: |
David Horstmann | 9d09a02 | 2023-11-28 19:25:00 +0000 | [diff] [blame] | 4833 | LOCAL_INPUT_FREE(nonce_external, nonce); |
| 4834 | LOCAL_INPUT_FREE(additional_data_external, additional_data); |
| 4835 | LOCAL_INPUT_FREE(plaintext_external, plaintext); |
| 4836 | LOCAL_OUTPUT_FREE(ciphertext_external, ciphertext); |
| 4837 | |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 4838 | psa_unregister_read_under_mutex(slot); |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4839 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4840 | return status; |
Gilles Peskine | ee652a3 | 2018-06-01 19:23:52 +0200 | [diff] [blame] | 4841 | } |
| 4842 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4843 | psa_status_t psa_aead_decrypt(mbedtls_svc_key_id_t key, |
| 4844 | psa_algorithm_t alg, |
David Horstmann | 7f2e040 | 2023-11-28 19:43:53 +0000 | [diff] [blame] | 4845 | const uint8_t *nonce_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4846 | size_t nonce_length, |
David Horstmann | 7f2e040 | 2023-11-28 19:43:53 +0000 | [diff] [blame] | 4847 | const uint8_t *additional_data_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4848 | size_t additional_data_length, |
David Horstmann | 7f2e040 | 2023-11-28 19:43:53 +0000 | [diff] [blame] | 4849 | const uint8_t *ciphertext_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4850 | size_t ciphertext_length, |
David Horstmann | 7f2e040 | 2023-11-28 19:43:53 +0000 | [diff] [blame] | 4851 | uint8_t *plaintext_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4852 | size_t plaintext_size, |
| 4853 | size_t *plaintext_length) |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4854 | { |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4855 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4856 | psa_key_slot_t *slot; |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4857 | |
David Horstmann | 7f2e040 | 2023-11-28 19:43:53 +0000 | [diff] [blame] | 4858 | LOCAL_INPUT_DECLARE(nonce_external, nonce); |
| 4859 | LOCAL_INPUT_DECLARE(additional_data_external, additional_data); |
| 4860 | LOCAL_INPUT_DECLARE(ciphertext_external, ciphertext); |
| 4861 | LOCAL_OUTPUT_DECLARE(plaintext_external, plaintext); |
| 4862 | |
Gilles Peskine | ee652a3 | 2018-06-01 19:23:52 +0200 | [diff] [blame] | 4863 | *plaintext_length = 0; |
mohammad1603 | 9e5a515 | 2018-04-26 12:07:35 +0300 | [diff] [blame] | 4864 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4865 | status = psa_aead_check_algorithm(alg); |
| 4866 | if (status != PSA_SUCCESS) { |
| 4867 | return status; |
| 4868 | } |
Steven Cooreman | ea7ab13 | 2021-03-17 16:28:00 +0100 | [diff] [blame] | 4869 | |
Ronald Cron | 9a98616 | 2021-03-26 12:40:07 +0100 | [diff] [blame] | 4870 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4871 | key, &slot, PSA_KEY_USAGE_DECRYPT, alg); |
| 4872 | if (status != PSA_SUCCESS) { |
| 4873 | return status; |
| 4874 | } |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4875 | |
David Horstmann | 7f2e040 | 2023-11-28 19:43:53 +0000 | [diff] [blame] | 4876 | LOCAL_INPUT_ALLOC(nonce_external, nonce_length, nonce); |
| 4877 | LOCAL_INPUT_ALLOC(additional_data_external, additional_data_length, |
| 4878 | additional_data); |
| 4879 | LOCAL_INPUT_ALLOC(ciphertext_external, ciphertext_length, ciphertext); |
| 4880 | LOCAL_OUTPUT_ALLOC(plaintext_external, plaintext_size, plaintext); |
| 4881 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4882 | status = psa_aead_check_nonce_length(alg, nonce_length); |
| 4883 | if (status != PSA_SUCCESS) { |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4884 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4885 | } |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4886 | |
Ronald Cron | de82281 | 2021-03-17 16:08:20 +0100 | [diff] [blame] | 4887 | status = psa_driver_wrapper_aead_decrypt( |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 4888 | &slot->attr, slot->key.data, slot->key.bytes, |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4889 | alg, |
| 4890 | nonce, nonce_length, |
| 4891 | additional_data, additional_data_length, |
| 4892 | ciphertext, ciphertext_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4893 | plaintext, plaintext_size, plaintext_length); |
Gilles Peskine | a40d774 | 2018-06-01 16:28:30 +0200 | [diff] [blame] | 4894 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4895 | if (status != PSA_SUCCESS && plaintext_size != 0) { |
| 4896 | memset(plaintext, 0, plaintext_size); |
| 4897 | } |
mohammad1603 | 60a64d0 | 2018-06-03 17:20:42 +0300 | [diff] [blame] | 4898 | |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4899 | exit: |
David Horstmann | 7f2e040 | 2023-11-28 19:43:53 +0000 | [diff] [blame] | 4900 | LOCAL_INPUT_FREE(nonce_external, nonce); |
| 4901 | LOCAL_INPUT_FREE(additional_data_external, additional_data); |
| 4902 | LOCAL_INPUT_FREE(ciphertext_external, ciphertext); |
| 4903 | LOCAL_OUTPUT_FREE(plaintext_external, plaintext); |
| 4904 | |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 4905 | psa_unregister_read_under_mutex(slot); |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4906 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4907 | return status; |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4908 | } |
| 4909 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4910 | static psa_status_t psa_validate_tag_length(psa_algorithm_t alg) |
| 4911 | { |
| 4912 | const uint8_t tag_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg); |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4913 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4914 | switch (PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg, 0)) { |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4915 | #if defined(PSA_WANT_ALG_CCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4916 | case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0): |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4917 | /* CCM allows the following tag lengths: 4, 6, 8, 10, 12, 14, 16.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4918 | if (tag_len < 4 || tag_len > 16 || tag_len % 2) { |
| 4919 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4920 | } |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4921 | break; |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4922 | #endif /* PSA_WANT_ALG_CCM */ |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4923 | |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4924 | #if defined(PSA_WANT_ALG_GCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4925 | case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0): |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4926 | /* GCM allows the following tag lengths: 4, 8, 12, 13, 14, 15, 16. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4927 | if (tag_len != 4 && tag_len != 8 && (tag_len < 12 || tag_len > 16)) { |
| 4928 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4929 | } |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4930 | break; |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4931 | #endif /* PSA_WANT_ALG_GCM */ |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4932 | |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4933 | #if defined(PSA_WANT_ALG_CHACHA20_POLY1305) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4934 | case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0): |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4935 | /* We only support the default tag length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4936 | if (tag_len != 16) { |
| 4937 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4938 | } |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4939 | break; |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4940 | #endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */ |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4941 | |
| 4942 | default: |
| 4943 | (void) tag_len; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4944 | return PSA_ERROR_NOT_SUPPORTED; |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4945 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4946 | return PSA_SUCCESS; |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4947 | } |
| 4948 | |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4949 | /* Set the key for a multipart authenticated operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4950 | static psa_status_t psa_aead_setup(psa_aead_operation_t *operation, |
| 4951 | int is_encrypt, |
| 4952 | mbedtls_svc_key_id_t key, |
| 4953 | psa_algorithm_t alg) |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4954 | { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4955 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4956 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4957 | psa_key_slot_t *slot = NULL; |
| 4958 | psa_key_usage_t key_usage = 0; |
| 4959 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4960 | status = psa_aead_check_algorithm(alg); |
| 4961 | if (status != PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4962 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4963 | } |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4964 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4965 | if (operation->id != 0) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4966 | status = PSA_ERROR_BAD_STATE; |
| 4967 | goto exit; |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4968 | } |
| 4969 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4970 | if (operation->nonce_set || operation->lengths_set || |
| 4971 | operation->ad_started || operation->body_started) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4972 | status = PSA_ERROR_BAD_STATE; |
| 4973 | goto exit; |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4974 | } |
| 4975 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4976 | if (is_encrypt) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4977 | key_usage = PSA_KEY_USAGE_ENCRYPT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4978 | } else { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4979 | key_usage = PSA_KEY_USAGE_DECRYPT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4980 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4981 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4982 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, key_usage, |
| 4983 | alg); |
| 4984 | if (status != PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4985 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4986 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4987 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4988 | if ((status = psa_validate_tag_length(alg)) != PSA_SUCCESS) { |
Przemek Stekiel | 6ab5076 | 2022-10-08 17:54:30 +0200 | [diff] [blame] | 4989 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4990 | } |
Przemek Stekiel | 6ab5076 | 2022-10-08 17:54:30 +0200 | [diff] [blame] | 4991 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4992 | if (is_encrypt) { |
| 4993 | status = psa_driver_wrapper_aead_encrypt_setup(operation, |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 4994 | &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4995 | slot->key.data, |
| 4996 | slot->key.bytes, |
| 4997 | alg); |
| 4998 | } else { |
| 4999 | status = psa_driver_wrapper_aead_decrypt_setup(operation, |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 5000 | &slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5001 | slot->key.data, |
| 5002 | slot->key.bytes, |
| 5003 | alg); |
| 5004 | } |
| 5005 | if (status != PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 5006 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5007 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 5008 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 5009 | operation->key_type = psa_get_key_type(&slot->attr); |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 5010 | |
| 5011 | exit: |
Ryan Everett | 9af70e5 | 2024-02-14 18:38:56 +0000 | [diff] [blame] | 5012 | unlock_status = psa_unregister_read_under_mutex(slot); |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 5013 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5014 | if (status == PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 5015 | status = unlock_status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5016 | operation->alg = psa_aead_get_base_algorithm(alg); |
Paul Elliott | d9343f2 | 2021-08-23 18:59:49 +0100 | [diff] [blame] | 5017 | operation->is_encrypt = is_encrypt; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5018 | } else { |
| 5019 | psa_aead_abort(operation); |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 5020 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 5021 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5022 | return status; |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 5023 | } |
| 5024 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5025 | /* Set the key for a multipart authenticated encryption operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5026 | psa_status_t psa_aead_encrypt_setup(psa_aead_operation_t *operation, |
| 5027 | mbedtls_svc_key_id_t key, |
| 5028 | psa_algorithm_t alg) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5029 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5030 | return psa_aead_setup(operation, 1, key, alg); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5031 | } |
| 5032 | |
| 5033 | /* Set the key for a multipart authenticated decryption operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5034 | psa_status_t psa_aead_decrypt_setup(psa_aead_operation_t *operation, |
| 5035 | mbedtls_svc_key_id_t key, |
| 5036 | psa_algorithm_t alg) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5037 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5038 | return psa_aead_setup(operation, 0, key, alg); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5039 | } |
| 5040 | |
David Horstmann | fed2377 | 2023-12-19 17:49:20 +0000 | [diff] [blame] | 5041 | static psa_status_t psa_aead_set_nonce_internal(psa_aead_operation_t *operation, |
| 5042 | const uint8_t *nonce, |
| 5043 | size_t nonce_length) |
| 5044 | { |
| 5045 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5046 | |
| 5047 | if (operation->id == 0) { |
| 5048 | status = PSA_ERROR_BAD_STATE; |
| 5049 | goto exit; |
| 5050 | } |
| 5051 | |
| 5052 | if (operation->nonce_set) { |
| 5053 | status = PSA_ERROR_BAD_STATE; |
| 5054 | goto exit; |
| 5055 | } |
| 5056 | |
| 5057 | status = psa_aead_check_nonce_length(operation->alg, nonce_length); |
| 5058 | if (status != PSA_SUCCESS) { |
| 5059 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 5060 | goto exit; |
| 5061 | } |
| 5062 | |
| 5063 | status = psa_driver_wrapper_aead_set_nonce(operation, nonce, |
| 5064 | nonce_length); |
| 5065 | |
| 5066 | exit: |
| 5067 | if (status == PSA_SUCCESS) { |
| 5068 | operation->nonce_set = 1; |
| 5069 | } else { |
| 5070 | psa_aead_abort(operation); |
| 5071 | } |
| 5072 | |
| 5073 | return status; |
| 5074 | } |
| 5075 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5076 | /* Generate a random nonce / IV for multipart AEAD operation */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5077 | psa_status_t psa_aead_generate_nonce(psa_aead_operation_t *operation, |
David Horstmann | d3cad8b | 2023-12-11 14:46:04 +0000 | [diff] [blame] | 5078 | uint8_t *nonce_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5079 | size_t nonce_size, |
| 5080 | size_t *nonce_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5081 | { |
| 5082 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | cae5909 | 2021-11-26 18:53:58 +0100 | [diff] [blame] | 5083 | uint8_t local_nonce[PSA_AEAD_NONCE_MAX_SIZE]; |
Sergey | bef1f63 | 2023-03-06 15:25:06 -0700 | [diff] [blame] | 5084 | size_t required_nonce_size = 0; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5085 | |
David Horstmann | d3cad8b | 2023-12-11 14:46:04 +0000 | [diff] [blame] | 5086 | LOCAL_OUTPUT_DECLARE(nonce_external, nonce); |
| 5087 | LOCAL_OUTPUT_ALLOC(nonce_external, nonce_size, nonce); |
| 5088 | |
Paul Elliott | 8eb9daf | 2021-06-04 16:42:21 +0100 | [diff] [blame] | 5089 | *nonce_length = 0; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5090 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5091 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5092 | status = PSA_ERROR_BAD_STATE; |
| 5093 | goto exit; |
| 5094 | } |
| 5095 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5096 | if (operation->nonce_set || !operation->is_encrypt) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5097 | status = PSA_ERROR_BAD_STATE; |
| 5098 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5099 | } |
| 5100 | |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 5101 | /* For CCM, this size may not be correct according to the PSA |
| 5102 | * specification. The PSA Crypto 1.0.1 specification states: |
| 5103 | * |
| 5104 | * CCM encodes the plaintext length pLen in L octets, with L the smallest |
| 5105 | * integer >= 2 where pLen < 2^(8L). The nonce length is then 15 - L bytes. |
| 5106 | * |
| 5107 | * However this restriction that L has to be the smallest integer is not |
| 5108 | * applied in practice, and it is not implementable here since the |
| 5109 | * plaintext length may or may not be known at this time. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5110 | required_nonce_size = PSA_AEAD_NONCE_LENGTH(operation->key_type, |
| 5111 | operation->alg); |
| 5112 | if (nonce_size < required_nonce_size) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5113 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 5114 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5115 | } |
| 5116 | |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 5117 | status = psa_generate_random_internal(local_nonce, required_nonce_size); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5118 | if (status != PSA_SUCCESS) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5119 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5120 | } |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5121 | |
David Horstmann | fed2377 | 2023-12-19 17:49:20 +0000 | [diff] [blame] | 5122 | status = psa_aead_set_nonce_internal(operation, local_nonce, |
| 5123 | required_nonce_size); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5124 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5125 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5126 | if (status == PSA_SUCCESS) { |
| 5127 | memcpy(nonce, local_nonce, required_nonce_size); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5128 | *nonce_length = required_nonce_size; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5129 | } else { |
| 5130 | psa_aead_abort(operation); |
Ronald Cron | cae5909 | 2021-11-26 18:53:58 +0100 | [diff] [blame] | 5131 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5132 | |
David Horstmann | d3cad8b | 2023-12-11 14:46:04 +0000 | [diff] [blame] | 5133 | LOCAL_OUTPUT_FREE(nonce_external, nonce); |
| 5134 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5135 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5136 | } |
| 5137 | |
| 5138 | /* Set the nonce for a multipart authenticated encryption or decryption |
| 5139 | operation.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5140 | psa_status_t psa_aead_set_nonce(psa_aead_operation_t *operation, |
David Horstmann | 8f0ef51 | 2023-12-11 15:17:11 +0000 | [diff] [blame] | 5141 | const uint8_t *nonce_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5142 | size_t nonce_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5143 | { |
David Horstmann | fed2377 | 2023-12-19 17:49:20 +0000 | [diff] [blame] | 5144 | psa_status_t status; |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5145 | |
David Horstmann | 8f0ef51 | 2023-12-11 15:17:11 +0000 | [diff] [blame] | 5146 | LOCAL_INPUT_DECLARE(nonce_external, nonce); |
| 5147 | LOCAL_INPUT_ALLOC(nonce_external, nonce_length, nonce); |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5148 | |
David Horstmann | fed2377 | 2023-12-19 17:49:20 +0000 | [diff] [blame] | 5149 | status = psa_aead_set_nonce_internal(operation, nonce, nonce_length); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5150 | |
David Horstmann | 18dc032 | 2023-12-20 16:16:43 +0000 | [diff] [blame] | 5151 | /* Exit label is only needed for buffer copying, prevent unused warnings. */ |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 5152 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5153 | exit: |
David Horstmann | 18dc032 | 2023-12-20 16:16:43 +0000 | [diff] [blame] | 5154 | #endif |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5155 | |
David Horstmann | 8f0ef51 | 2023-12-11 15:17:11 +0000 | [diff] [blame] | 5156 | LOCAL_INPUT_FREE(nonce_external, nonce); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5157 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5158 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5159 | } |
| 5160 | |
| 5161 | /* Declare the lengths of the message and additional data for multipart AEAD. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5162 | psa_status_t psa_aead_set_lengths(psa_aead_operation_t *operation, |
| 5163 | size_t ad_length, |
| 5164 | size_t plaintext_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5165 | { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5166 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5167 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5168 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5169 | status = PSA_ERROR_BAD_STATE; |
| 5170 | goto exit; |
| 5171 | } |
| 5172 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5173 | if (operation->lengths_set || operation->ad_started || |
| 5174 | operation->body_started) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5175 | status = PSA_ERROR_BAD_STATE; |
| 5176 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5177 | } |
| 5178 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5179 | switch (operation->alg) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 5180 | #if defined(PSA_WANT_ALG_GCM) |
| 5181 | case PSA_ALG_GCM: |
| 5182 | /* Lengths can only be too large for GCM if size_t is bigger than 32 |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5183 | * bits. Without the guard this code will generate warnings on 32bit |
| 5184 | * builds. */ |
Paul Elliott | 325d374 | 2021-09-27 17:56:28 +0100 | [diff] [blame] | 5185 | #if SIZE_MAX > UINT32_MAX |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5186 | if (((uint64_t) ad_length) >> 61 != 0 || |
| 5187 | ((uint64_t) plaintext_length) > 0xFFFFFFFE0ull) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 5188 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 5189 | goto exit; |
| 5190 | } |
Paul Elliott | 325d374 | 2021-09-27 17:56:28 +0100 | [diff] [blame] | 5191 | #endif |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 5192 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 5193 | #endif /* PSA_WANT_ALG_GCM */ |
| 5194 | #if defined(PSA_WANT_ALG_CCM) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 5195 | case PSA_ALG_CCM: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5196 | if (ad_length > 0xFF00) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 5197 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 5198 | goto exit; |
| 5199 | } |
| 5200 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 5201 | #endif /* PSA_WANT_ALG_CCM */ |
| 5202 | #if defined(PSA_WANT_ALG_CHACHA20_POLY1305) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 5203 | case PSA_ALG_CHACHA20_POLY1305: |
| 5204 | /* No length restrictions for ChaChaPoly. */ |
| 5205 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 5206 | #endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */ |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 5207 | default: |
| 5208 | break; |
| 5209 | } |
Paul Elliott | 325d374 | 2021-09-27 17:56:28 +0100 | [diff] [blame] | 5210 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5211 | status = psa_driver_wrapper_aead_set_lengths(operation, ad_length, |
| 5212 | plaintext_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5213 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5214 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5215 | if (status == PSA_SUCCESS) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5216 | operation->ad_remaining = ad_length; |
| 5217 | operation->body_remaining = plaintext_length; |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5218 | operation->lengths_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5219 | } else { |
| 5220 | psa_aead_abort(operation); |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5221 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5222 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5223 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5224 | } |
Paul Elliott | 3d7d52c | 2021-09-01 10:33:14 +0100 | [diff] [blame] | 5225 | |
| 5226 | /* Pass additional data to an active multipart AEAD operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5227 | psa_status_t psa_aead_update_ad(psa_aead_operation_t *operation, |
David Horstmann | 25dac6e | 2023-12-11 15:23:13 +0000 | [diff] [blame] | 5228 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5229 | size_t input_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5230 | { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5231 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5232 | |
David Horstmann | 25dac6e | 2023-12-11 15:23:13 +0000 | [diff] [blame] | 5233 | LOCAL_INPUT_DECLARE(input_external, input); |
| 5234 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 5235 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5236 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5237 | status = PSA_ERROR_BAD_STATE; |
| 5238 | goto exit; |
| 5239 | } |
| 5240 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5241 | if (!operation->nonce_set || operation->body_started) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5242 | status = PSA_ERROR_BAD_STATE; |
| 5243 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5244 | } |
| 5245 | |
Paul Elliott | 304766f | 2024-04-26 18:30:11 +0100 | [diff] [blame] | 5246 | /* No input to add (zero length), nothing to do. */ |
| 5247 | if (input_length == 0) { |
| 5248 | status = PSA_SUCCESS; |
| 5249 | goto exit; |
| 5250 | } |
| 5251 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5252 | if (operation->lengths_set) { |
| 5253 | if (operation->ad_remaining < input_length) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5254 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 5255 | goto exit; |
| 5256 | } |
| 5257 | |
| 5258 | operation->ad_remaining -= input_length; |
| 5259 | } |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 5260 | #if defined(PSA_WANT_ALG_CCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5261 | else if (operation->alg == PSA_ALG_CCM) { |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 5262 | status = PSA_ERROR_BAD_STATE; |
| 5263 | goto exit; |
| 5264 | } |
| 5265 | #endif /* PSA_WANT_ALG_CCM */ |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5266 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5267 | status = psa_driver_wrapper_aead_update_ad(operation, input, |
| 5268 | input_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5269 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5270 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5271 | if (status == PSA_SUCCESS) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5272 | operation->ad_started = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5273 | } else { |
| 5274 | psa_aead_abort(operation); |
| 5275 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5276 | |
David Horstmann | 25dac6e | 2023-12-11 15:23:13 +0000 | [diff] [blame] | 5277 | LOCAL_INPUT_FREE(input_external, input); |
| 5278 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5279 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5280 | } |
| 5281 | |
| 5282 | /* Encrypt or decrypt a message fragment in an active multipart AEAD |
| 5283 | operation.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5284 | psa_status_t psa_aead_update(psa_aead_operation_t *operation, |
David Horstmann | 2914fac | 2023-12-11 15:28:37 +0000 | [diff] [blame] | 5285 | const uint8_t *input_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5286 | size_t input_length, |
David Horstmann | 2914fac | 2023-12-11 15:28:37 +0000 | [diff] [blame] | 5287 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5288 | size_t output_size, |
| 5289 | size_t *output_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5290 | { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5291 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5292 | |
David Horstmann | 2914fac | 2023-12-11 15:28:37 +0000 | [diff] [blame] | 5293 | |
| 5294 | LOCAL_INPUT_DECLARE(input_external, input); |
| 5295 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 5296 | |
| 5297 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
| 5298 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
| 5299 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5300 | *output_length = 0; |
| 5301 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5302 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5303 | status = PSA_ERROR_BAD_STATE; |
| 5304 | goto exit; |
| 5305 | } |
| 5306 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5307 | if (!operation->nonce_set) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5308 | status = PSA_ERROR_BAD_STATE; |
| 5309 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5310 | } |
| 5311 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5312 | if (operation->lengths_set) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5313 | /* Additional data length was supplied, but not all the additional |
| 5314 | data was supplied.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5315 | if (operation->ad_remaining != 0) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5316 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 5317 | goto exit; |
| 5318 | } |
| 5319 | |
| 5320 | /* Too much data provided. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5321 | if (operation->body_remaining < input_length) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5322 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 5323 | goto exit; |
| 5324 | } |
| 5325 | |
| 5326 | operation->body_remaining -= input_length; |
| 5327 | } |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 5328 | #if defined(PSA_WANT_ALG_CCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5329 | else if (operation->alg == PSA_ALG_CCM) { |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 5330 | status = PSA_ERROR_BAD_STATE; |
| 5331 | goto exit; |
| 5332 | } |
| 5333 | #endif /* PSA_WANT_ALG_CCM */ |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 5334 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5335 | status = psa_driver_wrapper_aead_update(operation, input, input_length, |
| 5336 | output, output_size, |
| 5337 | output_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5338 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5339 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5340 | if (status == PSA_SUCCESS) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5341 | operation->body_started = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5342 | } else { |
| 5343 | psa_aead_abort(operation); |
| 5344 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5345 | |
David Horstmann | 2914fac | 2023-12-11 15:28:37 +0000 | [diff] [blame] | 5346 | LOCAL_INPUT_FREE(input_external, input); |
| 5347 | LOCAL_OUTPUT_FREE(output_external, output); |
| 5348 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5349 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5350 | } |
| 5351 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5352 | static psa_status_t psa_aead_final_checks(const psa_aead_operation_t *operation) |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5353 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5354 | if (operation->id == 0 || !operation->nonce_set) { |
| 5355 | return PSA_ERROR_BAD_STATE; |
| 5356 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5357 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5358 | if (operation->lengths_set && (operation->ad_remaining != 0 || |
| 5359 | operation->body_remaining != 0)) { |
| 5360 | return PSA_ERROR_INVALID_ARGUMENT; |
| 5361 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5362 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5363 | return PSA_SUCCESS; |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5364 | } |
| 5365 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5366 | /* Finish encrypting a message in a multipart AEAD operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5367 | psa_status_t psa_aead_finish(psa_aead_operation_t *operation, |
David Horstmann | 6db0e73 | 2023-12-11 15:35:59 +0000 | [diff] [blame] | 5368 | uint8_t *ciphertext_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5369 | size_t ciphertext_size, |
| 5370 | size_t *ciphertext_length, |
David Horstmann | 6db0e73 | 2023-12-11 15:35:59 +0000 | [diff] [blame] | 5371 | uint8_t *tag_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5372 | size_t tag_size, |
| 5373 | size_t *tag_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5374 | { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5375 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5376 | |
David Horstmann | 6db0e73 | 2023-12-11 15:35:59 +0000 | [diff] [blame] | 5377 | LOCAL_OUTPUT_DECLARE(ciphertext_external, ciphertext); |
| 5378 | LOCAL_OUTPUT_DECLARE(tag_external, tag); |
| 5379 | |
| 5380 | LOCAL_OUTPUT_ALLOC(ciphertext_external, ciphertext_size, ciphertext); |
| 5381 | LOCAL_OUTPUT_ALLOC(tag_external, tag_size, tag); |
| 5382 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5383 | *ciphertext_length = 0; |
Paul Elliott | f88a565 | 2021-06-22 17:53:45 +0100 | [diff] [blame] | 5384 | *tag_length = tag_size; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5385 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5386 | status = psa_aead_final_checks(operation); |
| 5387 | if (status != PSA_SUCCESS) { |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5388 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5389 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5390 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5391 | if (!operation->is_encrypt) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5392 | status = PSA_ERROR_BAD_STATE; |
| 5393 | goto exit; |
| 5394 | } |
| 5395 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5396 | status = psa_driver_wrapper_aead_finish(operation, ciphertext, |
| 5397 | ciphertext_size, |
| 5398 | ciphertext_length, |
| 5399 | tag, tag_size, tag_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5400 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5401 | exit: |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 5402 | |
| 5403 | |
Paul Elliott | f47b095 | 2021-05-21 18:02:33 +0100 | [diff] [blame] | 5404 | /* In case the operation fails and the user fails to check for failure or |
Paul Elliott | 4c916e8 | 2021-09-19 18:34:50 +0100 | [diff] [blame] | 5405 | * the zero tag size, make sure the tag is set to something implausible. |
| 5406 | * Even if the operation succeeds, make sure we clear the rest of the |
| 5407 | * buffer to prevent potential leakage of anything previously placed in |
| 5408 | * the same buffer.*/ |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 5409 | psa_wipe_tag_output_buffer(tag, status, tag_size, *tag_length); |
Paul Elliott | f47b095 | 2021-05-21 18:02:33 +0100 | [diff] [blame] | 5410 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5411 | psa_aead_abort(operation); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5412 | |
David Horstmann | 6db0e73 | 2023-12-11 15:35:59 +0000 | [diff] [blame] | 5413 | LOCAL_OUTPUT_FREE(ciphertext_external, ciphertext); |
| 5414 | LOCAL_OUTPUT_FREE(tag_external, tag); |
| 5415 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5416 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5417 | } |
| 5418 | |
| 5419 | /* Finish authenticating and decrypting a message in a multipart AEAD |
| 5420 | operation.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5421 | psa_status_t psa_aead_verify(psa_aead_operation_t *operation, |
David Horstmann | e000a0a | 2023-12-11 16:37:04 +0000 | [diff] [blame] | 5422 | uint8_t *plaintext_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5423 | size_t plaintext_size, |
| 5424 | size_t *plaintext_length, |
David Horstmann | e000a0a | 2023-12-11 16:37:04 +0000 | [diff] [blame] | 5425 | const uint8_t *tag_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5426 | size_t tag_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5427 | { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5428 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5429 | |
David Horstmann | e000a0a | 2023-12-11 16:37:04 +0000 | [diff] [blame] | 5430 | LOCAL_OUTPUT_DECLARE(plaintext_external, plaintext); |
| 5431 | LOCAL_INPUT_DECLARE(tag_external, tag); |
| 5432 | |
| 5433 | LOCAL_OUTPUT_ALLOC(plaintext_external, plaintext_size, plaintext); |
| 5434 | LOCAL_INPUT_ALLOC(tag_external, tag_length, tag); |
| 5435 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5436 | *plaintext_length = 0; |
| 5437 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5438 | status = psa_aead_final_checks(operation); |
| 5439 | if (status != PSA_SUCCESS) { |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5440 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5441 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5442 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5443 | if (operation->is_encrypt) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5444 | status = PSA_ERROR_BAD_STATE; |
| 5445 | goto exit; |
| 5446 | } |
| 5447 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5448 | status = psa_driver_wrapper_aead_verify(operation, plaintext, |
| 5449 | plaintext_size, |
| 5450 | plaintext_length, |
| 5451 | tag, tag_length); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5452 | |
| 5453 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5454 | psa_aead_abort(operation); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5455 | |
David Horstmann | e000a0a | 2023-12-11 16:37:04 +0000 | [diff] [blame] | 5456 | LOCAL_OUTPUT_FREE(plaintext_external, plaintext); |
| 5457 | LOCAL_INPUT_FREE(tag_external, tag); |
| 5458 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5459 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5460 | } |
| 5461 | |
| 5462 | /* Abort an AEAD operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5463 | psa_status_t psa_aead_abort(psa_aead_operation_t *operation) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5464 | { |
| 5465 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5466 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5467 | if (operation->id == 0) { |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5468 | /* The object has (apparently) been initialized but it is not (yet) |
| 5469 | * in use. It's ok to call abort on such an object, and there's |
| 5470 | * nothing to do. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5471 | return PSA_SUCCESS; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5472 | } |
| 5473 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5474 | status = psa_driver_wrapper_aead_abort(operation); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5475 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5476 | memset(operation, 0, sizeof(*operation)); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5477 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5478 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5479 | } |
| 5480 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 5481 | /****************************************************************/ |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5482 | /* Generators */ |
| 5483 | /****************************************************************/ |
| 5484 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5485 | #if defined(BUILTIN_ALG_ANY_HKDF) || \ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5486 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5487 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) || \ |
Kusumit Ghoderao | af0b534 | 2023-05-03 11:58:46 +0530 | [diff] [blame] | 5488 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) || \ |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 5489 | defined(PSA_HAVE_SOFT_PBKDF2) |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5490 | #define AT_LEAST_ONE_BUILTIN_KDF |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5491 | #endif /* At least one builtin KDF */ |
| 5492 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5493 | #if defined(BUILTIN_ALG_ANY_HKDF) || \ |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5494 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 5495 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
| 5496 | static psa_status_t psa_key_derivation_start_hmac( |
| 5497 | psa_mac_operation_t *operation, |
| 5498 | psa_algorithm_t hash_alg, |
| 5499 | const uint8_t *hmac_key, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5500 | size_t hmac_key_length) |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5501 | { |
| 5502 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5503 | psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5504 | psa_set_key_type(&attributes, PSA_KEY_TYPE_HMAC); |
| 5505 | psa_set_key_bits(&attributes, PSA_BYTES_TO_BITS(hmac_key_length)); |
| 5506 | psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_SIGN_HASH); |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5507 | |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 5508 | operation->is_sign = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5509 | operation->mac_size = PSA_HASH_LENGTH(hash_alg); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 5510 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5511 | status = psa_driver_wrapper_mac_sign_setup(operation, |
| 5512 | &attributes, |
| 5513 | hmac_key, hmac_key_length, |
| 5514 | PSA_ALG_HMAC(hash_alg)); |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5515 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5516 | psa_reset_key_attributes(&attributes); |
| 5517 | return status; |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5518 | } |
| 5519 | #endif /* KDF algorithms reliant on HMAC */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5520 | |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 5521 | #define HKDF_STATE_INIT 0 /* no input yet */ |
| 5522 | #define HKDF_STATE_STARTED 1 /* got salt */ |
| 5523 | #define HKDF_STATE_KEYED 2 /* got key */ |
| 5524 | #define HKDF_STATE_OUTPUT 3 /* output started */ |
| 5525 | |
Gilles Peskine | cbe6650 | 2019-05-16 16:59:18 +0200 | [diff] [blame] | 5526 | static psa_algorithm_t psa_key_derivation_get_kdf_alg( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5527 | const psa_key_derivation_operation_t *operation) |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 5528 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5529 | if (PSA_ALG_IS_KEY_AGREEMENT(operation->alg)) { |
| 5530 | return PSA_ALG_KEY_AGREEMENT_GET_KDF(operation->alg); |
| 5531 | } else { |
| 5532 | return operation->alg; |
| 5533 | } |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 5534 | } |
| 5535 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5536 | psa_status_t psa_key_derivation_abort(psa_key_derivation_operation_t *operation) |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5537 | { |
| 5538 | psa_status_t status = PSA_SUCCESS; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5539 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
| 5540 | if (kdf_alg == 0) { |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5541 | /* The object has (apparently) been initialized but it is not |
| 5542 | * in use. It's ok to call abort on such an object, and there's |
| 5543 | * nothing to do. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5544 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5545 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5546 | if (PSA_ALG_IS_ANY_HKDF(kdf_alg)) { |
| 5547 | mbedtls_free(operation->ctx.hkdf.info); |
| 5548 | status = psa_mac_abort(&operation->ctx.hkdf.hmac); |
| 5549 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5550 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5551 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 5552 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5553 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg) || |
| 5554 | /* TLS-1.2 PSK-to-MS KDF uses the same core as TLS-1.2 PRF */ |
| 5555 | PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 5556 | if (operation->ctx.tls12_prf.secret != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5557 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.secret, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5558 | operation->ctx.tls12_prf.secret_length); |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5559 | } |
| 5560 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5561 | if (operation->ctx.tls12_prf.seed != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5562 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.seed, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5563 | operation->ctx.tls12_prf.seed_length); |
Janos Follath | 6a1d262 | 2019-06-11 10:37:28 +0100 | [diff] [blame] | 5564 | } |
| 5565 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5566 | if (operation->ctx.tls12_prf.label != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5567 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.label, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5568 | operation->ctx.tls12_prf.label_length); |
Janos Follath | 6a1d262 | 2019-06-11 10:37:28 +0100 | [diff] [blame] | 5569 | } |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 5570 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5571 | if (operation->ctx.tls12_prf.other_secret != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5572 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.other_secret, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5573 | operation->ctx.tls12_prf.other_secret_length); |
Przemek Stekiel | e3ee221 | 2022-04-07 14:29:56 +0200 | [diff] [blame] | 5574 | } |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 5575 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5576 | status = PSA_SUCCESS; |
Janos Follath | 6a1d262 | 2019-06-11 10:37:28 +0100 | [diff] [blame] | 5577 | |
| 5578 | /* We leave the fields Ai and output_block to be erased safely by the |
| 5579 | * mbedtls_platform_zeroize() in the end of this function. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5580 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5581 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || |
| 5582 | * defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5583 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5584 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 5585 | mbedtls_platform_zeroize(operation->ctx.tls12_ecjpake_to_pms.data, |
| 5586 | sizeof(operation->ctx.tls12_ecjpake_to_pms.data)); |
| 5587 | } else |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5588 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) */ |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 5589 | #if defined(PSA_HAVE_SOFT_PBKDF2) |
Kusumit Ghoderao | 9ab03c3 | 2023-07-27 21:14:05 +0530 | [diff] [blame] | 5590 | if (PSA_ALG_IS_PBKDF2(kdf_alg)) { |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5591 | if (operation->ctx.pbkdf2.salt != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5592 | mbedtls_zeroize_and_free(operation->ctx.pbkdf2.salt, |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5593 | operation->ctx.pbkdf2.salt_length); |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5594 | } |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5595 | |
| 5596 | status = PSA_SUCCESS; |
| 5597 | } else |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 5598 | #endif /* defined(PSA_HAVE_SOFT_PBKDF2) */ |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5599 | { |
| 5600 | status = PSA_ERROR_BAD_STATE; |
| 5601 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5602 | mbedtls_platform_zeroize(operation, sizeof(*operation)); |
| 5603 | return status; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5604 | } |
| 5605 | |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5606 | psa_status_t psa_key_derivation_get_capacity(const psa_key_derivation_operation_t *operation, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5607 | size_t *capacity) |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5608 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5609 | if (operation->alg == 0) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5610 | /* This is a blank key derivation operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5611 | return PSA_ERROR_BAD_STATE; |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 5612 | } |
| 5613 | |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5614 | *capacity = operation->capacity; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5615 | return PSA_SUCCESS; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5616 | } |
| 5617 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5618 | psa_status_t psa_key_derivation_set_capacity(psa_key_derivation_operation_t *operation, |
| 5619 | size_t capacity) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 5620 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5621 | if (operation->alg == 0) { |
| 5622 | return PSA_ERROR_BAD_STATE; |
| 5623 | } |
| 5624 | if (capacity > operation->capacity) { |
| 5625 | return PSA_ERROR_INVALID_ARGUMENT; |
| 5626 | } |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5627 | operation->capacity = capacity; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5628 | return PSA_SUCCESS; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5629 | } |
| 5630 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5631 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 5632 | /* Read some bytes from an HKDF-based operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5633 | static psa_status_t psa_key_derivation_hkdf_read(psa_hkdf_key_derivation_t *hkdf, |
| 5634 | psa_algorithm_t kdf_alg, |
| 5635 | uint8_t *output, |
| 5636 | size_t output_length) |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5637 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5638 | psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg); |
| 5639 | uint8_t hash_length = PSA_HASH_LENGTH(hash_alg); |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 5640 | size_t hmac_output_length; |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5641 | psa_status_t status; |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 5642 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5643 | const uint8_t last_block = PSA_ALG_IS_HKDF_EXTRACT(kdf_alg) ? 0 : 0xff; |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 5644 | #else |
| 5645 | const uint8_t last_block = 0xff; |
| 5646 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5647 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5648 | if (hkdf->state < HKDF_STATE_KEYED || |
| 5649 | (!hkdf->info_set |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 5650 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5651 | && !PSA_ALG_IS_HKDF_EXTRACT(kdf_alg) |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 5652 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5653 | )) { |
| 5654 | return PSA_ERROR_BAD_STATE; |
| 5655 | } |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 5656 | hkdf->state = HKDF_STATE_OUTPUT; |
| 5657 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5658 | while (output_length != 0) { |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5659 | /* Copy what remains of the current block */ |
| 5660 | uint8_t n = hash_length - hkdf->offset_in_block; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5661 | if (n > output_length) { |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5662 | n = (uint8_t) output_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5663 | } |
| 5664 | memcpy(output, hkdf->output_block + hkdf->offset_in_block, n); |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5665 | output += n; |
| 5666 | output_length -= n; |
| 5667 | hkdf->offset_in_block += n; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5668 | if (output_length == 0) { |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5669 | break; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5670 | } |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 5671 | /* We can't be wanting more output after the last block, otherwise |
Gilles Peskine | a99d3fb | 2019-05-16 15:28:51 +0200 | [diff] [blame] | 5672 | * the capacity check in psa_key_derivation_output_bytes() would have |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5673 | * prevented this call. It could happen only if the operation |
Gilles Peskine | d54931c | 2018-07-17 21:06:59 +0200 | [diff] [blame] | 5674 | * object was corrupted or if this function is called directly |
| 5675 | * inside the library. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5676 | if (hkdf->block_number == last_block) { |
| 5677 | return PSA_ERROR_BAD_STATE; |
| 5678 | } |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5679 | |
| 5680 | /* We need a new block */ |
| 5681 | ++hkdf->block_number; |
| 5682 | hkdf->offset_in_block = 0; |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 5683 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5684 | status = psa_key_derivation_start_hmac(&hkdf->hmac, |
| 5685 | hash_alg, |
| 5686 | hkdf->prk, |
| 5687 | hash_length); |
| 5688 | if (status != PSA_SUCCESS) { |
| 5689 | return status; |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5690 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5691 | |
| 5692 | if (hkdf->block_number != 1) { |
| 5693 | status = psa_mac_update(&hkdf->hmac, |
| 5694 | hkdf->output_block, |
| 5695 | hash_length); |
| 5696 | if (status != PSA_SUCCESS) { |
| 5697 | return status; |
| 5698 | } |
| 5699 | } |
| 5700 | status = psa_mac_update(&hkdf->hmac, |
| 5701 | hkdf->info, |
| 5702 | hkdf->info_length); |
| 5703 | if (status != PSA_SUCCESS) { |
| 5704 | return status; |
| 5705 | } |
| 5706 | status = psa_mac_update(&hkdf->hmac, |
| 5707 | &hkdf->block_number, 1); |
| 5708 | if (status != PSA_SUCCESS) { |
| 5709 | return status; |
| 5710 | } |
| 5711 | status = psa_mac_sign_finish(&hkdf->hmac, |
| 5712 | hkdf->output_block, |
| 5713 | sizeof(hkdf->output_block), |
| 5714 | &hmac_output_length); |
| 5715 | if (status != PSA_SUCCESS) { |
| 5716 | return status; |
| 5717 | } |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5718 | } |
| 5719 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5720 | return PSA_SUCCESS; |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5721 | } |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5722 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
Hanno Becker | c8a41d7 | 2018-10-09 17:33:01 +0100 | [diff] [blame] | 5723 | |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5724 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 5725 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5726 | static psa_status_t psa_key_derivation_tls12_prf_generate_next_block( |
| 5727 | psa_tls12_prf_key_derivation_t *tls12_prf, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5728 | psa_algorithm_t alg) |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5729 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5730 | psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(alg); |
| 5731 | uint8_t hash_length = PSA_HASH_LENGTH(hash_alg); |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5732 | psa_mac_operation_t hmac = PSA_MAC_OPERATION_INIT; |
| 5733 | size_t hmac_output_length; |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5734 | psa_status_t status, cleanup_status; |
Hanno Becker | c8a41d7 | 2018-10-09 17:33:01 +0100 | [diff] [blame] | 5735 | |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5736 | /* We can't be wanting more output after block 0xff, otherwise |
| 5737 | * the capacity check in psa_key_derivation_output_bytes() would have |
| 5738 | * prevented this call. It could happen only if the operation |
| 5739 | * object was corrupted or if this function is called directly |
| 5740 | * inside the library. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5741 | if (tls12_prf->block_number == 0xff) { |
| 5742 | return PSA_ERROR_CORRUPTION_DETECTED; |
| 5743 | } |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5744 | |
| 5745 | /* We need a new block */ |
| 5746 | ++tls12_prf->block_number; |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5747 | tls12_prf->left_in_block = hash_length; |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5748 | |
| 5749 | /* Recall the definition of the TLS-1.2-PRF from RFC 5246: |
| 5750 | * |
| 5751 | * PRF(secret, label, seed) = P_<hash>(secret, label + seed) |
| 5752 | * |
| 5753 | * P_hash(secret, seed) = HMAC_hash(secret, A(1) + seed) + |
| 5754 | * HMAC_hash(secret, A(2) + seed) + |
| 5755 | * HMAC_hash(secret, A(3) + seed) + ... |
| 5756 | * |
| 5757 | * A(0) = seed |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5758 | * A(i) = HMAC_hash(secret, A(i-1)) |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5759 | * |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5760 | * The `psa_tls12_prf_key_derivation` structure saves the block |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5761 | * `HMAC_hash(secret, A(i) + seed)` from which the output |
Janos Follath | 76c3984 | 2019-06-26 12:50:36 +0100 | [diff] [blame] | 5762 | * is currently extracted as `output_block` and where i is |
| 5763 | * `block_number`. |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5764 | */ |
| 5765 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5766 | status = psa_key_derivation_start_hmac(&hmac, |
| 5767 | hash_alg, |
| 5768 | tls12_prf->secret, |
| 5769 | tls12_prf->secret_length); |
| 5770 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5771 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5772 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5773 | |
| 5774 | /* Calculate A(i) where i = tls12_prf->block_number. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5775 | if (tls12_prf->block_number == 1) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5776 | /* A(1) = HMAC_hash(secret, A(0)), where A(0) = seed. (The RFC overloads |
| 5777 | * the variable seed and in this instance means it in the context of the |
| 5778 | * P_hash function, where seed = label + seed.) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5779 | status = psa_mac_update(&hmac, |
| 5780 | tls12_prf->label, |
| 5781 | tls12_prf->label_length); |
| 5782 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5783 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5784 | } |
| 5785 | status = psa_mac_update(&hmac, |
| 5786 | tls12_prf->seed, |
| 5787 | tls12_prf->seed_length); |
| 5788 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5789 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5790 | } |
| 5791 | } else { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5792 | /* A(i) = HMAC_hash(secret, A(i-1)) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5793 | status = psa_mac_update(&hmac, tls12_prf->Ai, hash_length); |
| 5794 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5795 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5796 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5797 | } |
| 5798 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5799 | status = psa_mac_sign_finish(&hmac, |
| 5800 | tls12_prf->Ai, hash_length, |
| 5801 | &hmac_output_length); |
| 5802 | if (hmac_output_length != hash_length) { |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5803 | status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5804 | } |
| 5805 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5806 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5807 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5808 | |
| 5809 | /* Calculate HMAC_hash(secret, A(i) + label + seed). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5810 | status = psa_key_derivation_start_hmac(&hmac, |
| 5811 | hash_alg, |
| 5812 | tls12_prf->secret, |
| 5813 | tls12_prf->secret_length); |
| 5814 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5815 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5816 | } |
| 5817 | status = psa_mac_update(&hmac, tls12_prf->Ai, hash_length); |
| 5818 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5819 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5820 | } |
| 5821 | status = psa_mac_update(&hmac, tls12_prf->label, tls12_prf->label_length); |
| 5822 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5823 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5824 | } |
| 5825 | status = psa_mac_update(&hmac, tls12_prf->seed, tls12_prf->seed_length); |
| 5826 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5827 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5828 | } |
| 5829 | status = psa_mac_sign_finish(&hmac, |
| 5830 | tls12_prf->output_block, hash_length, |
| 5831 | &hmac_output_length); |
| 5832 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5833 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5834 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5835 | |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5836 | |
| 5837 | cleanup: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5838 | cleanup_status = psa_mac_abort(&hmac); |
| 5839 | if (status == PSA_SUCCESS && cleanup_status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5840 | status = cleanup_status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5841 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5842 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5843 | return status; |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5844 | } |
Hanno Becker | c8a41d7 | 2018-10-09 17:33:01 +0100 | [diff] [blame] | 5845 | |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5846 | static psa_status_t psa_key_derivation_tls12_prf_read( |
| 5847 | psa_tls12_prf_key_derivation_t *tls12_prf, |
| 5848 | psa_algorithm_t alg, |
| 5849 | uint8_t *output, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5850 | size_t output_length) |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5851 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5852 | psa_algorithm_t hash_alg = PSA_ALG_TLS12_PRF_GET_HASH(alg); |
| 5853 | uint8_t hash_length = PSA_HASH_LENGTH(hash_alg); |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5854 | psa_status_t status; |
| 5855 | uint8_t offset, length; |
| 5856 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5857 | switch (tls12_prf->state) { |
Gilles Peskine | b1edaec | 2021-06-11 22:41:46 +0200 | [diff] [blame] | 5858 | case PSA_TLS12_PRF_STATE_LABEL_SET: |
| 5859 | tls12_prf->state = PSA_TLS12_PRF_STATE_OUTPUT; |
| 5860 | break; |
| 5861 | case PSA_TLS12_PRF_STATE_OUTPUT: |
| 5862 | break; |
| 5863 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5864 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | b1edaec | 2021-06-11 22:41:46 +0200 | [diff] [blame] | 5865 | } |
| 5866 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5867 | while (output_length != 0) { |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5868 | /* Check if we have fully processed the current block. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5869 | if (tls12_prf->left_in_block == 0) { |
| 5870 | status = psa_key_derivation_tls12_prf_generate_next_block(tls12_prf, |
| 5871 | alg); |
| 5872 | if (status != PSA_SUCCESS) { |
| 5873 | return status; |
| 5874 | } |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5875 | |
| 5876 | continue; |
| 5877 | } |
| 5878 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5879 | if (tls12_prf->left_in_block > output_length) { |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5880 | length = (uint8_t) output_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5881 | } else { |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5882 | length = tls12_prf->left_in_block; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5883 | } |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5884 | |
| 5885 | offset = hash_length - tls12_prf->left_in_block; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5886 | memcpy(output, tls12_prf->output_block + offset, length); |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5887 | output += length; |
| 5888 | output_length -= length; |
| 5889 | tls12_prf->left_in_block -= length; |
| 5890 | } |
| 5891 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5892 | return PSA_SUCCESS; |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5893 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5894 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF || |
| 5895 | * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5896 | |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5897 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
| 5898 | static psa_status_t psa_key_derivation_tls12_ecjpake_to_pms_read( |
| 5899 | psa_tls12_ecjpake_to_pms_t *ecjpake, |
| 5900 | uint8_t *output, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5901 | size_t output_length) |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5902 | { |
| 5903 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Andrzej Kurek | 5603efd | 2022-09-26 10:49:16 -0400 | [diff] [blame] | 5904 | size_t output_size = 0; |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5905 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5906 | if (output_length != 32) { |
| 5907 | return PSA_ERROR_INVALID_ARGUMENT; |
| 5908 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5909 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5910 | status = psa_hash_compute(PSA_ALG_SHA_256, ecjpake->data, |
| 5911 | PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE, output, output_length, |
| 5912 | &output_size); |
| 5913 | if (status != PSA_SUCCESS) { |
| 5914 | return status; |
| 5915 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5916 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5917 | if (output_size != output_length) { |
| 5918 | return PSA_ERROR_GENERIC_ERROR; |
| 5919 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5920 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5921 | return PSA_SUCCESS; |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5922 | } |
| 5923 | #endif |
| 5924 | |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 5925 | #if defined(PSA_HAVE_SOFT_PBKDF2) |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5926 | static psa_status_t psa_key_derivation_pbkdf2_generate_block( |
| 5927 | psa_pbkdf2_key_derivation_t *pbkdf2, |
| 5928 | psa_algorithm_t prf_alg, |
| 5929 | uint8_t prf_output_length, |
| 5930 | psa_key_attributes_t *attributes) |
| 5931 | { |
| 5932 | psa_status_t status; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5933 | psa_mac_operation_t mac_operation = PSA_MAC_OPERATION_INIT; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5934 | size_t mac_output_length; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5935 | uint8_t U_i[PSA_MAC_MAX_SIZE]; |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5936 | uint8_t *U_accumulator = pbkdf2->output_block; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5937 | uint64_t i; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5938 | uint8_t block_counter[4]; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5939 | |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5940 | mac_operation.is_sign = 1; |
| 5941 | mac_operation.mac_size = prf_output_length; |
| 5942 | MBEDTLS_PUT_UINT32_BE(pbkdf2->block_number, block_counter, 0); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5943 | |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5944 | status = psa_driver_wrapper_mac_sign_setup(&mac_operation, |
| 5945 | attributes, |
| 5946 | pbkdf2->password, |
| 5947 | pbkdf2->password_length, |
| 5948 | prf_alg); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5949 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5950 | goto cleanup; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5951 | } |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5952 | status = psa_mac_update(&mac_operation, pbkdf2->salt, pbkdf2->salt_length); |
| 5953 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5954 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5955 | } |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5956 | status = psa_mac_update(&mac_operation, block_counter, sizeof(block_counter)); |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5957 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5958 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5959 | } |
| 5960 | status = psa_mac_sign_finish(&mac_operation, U_i, sizeof(U_i), |
| 5961 | &mac_output_length); |
| 5962 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5963 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5964 | } |
| 5965 | |
| 5966 | if (mac_output_length != prf_output_length) { |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5967 | status = PSA_ERROR_CORRUPTION_DETECTED; |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5968 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5969 | } |
| 5970 | |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5971 | memcpy(U_accumulator, U_i, prf_output_length); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5972 | |
| 5973 | for (i = 1; i < pbkdf2->input_cost; i++) { |
Kusumit Ghoderao | 4536bb6 | 2023-06-22 15:42:59 +0530 | [diff] [blame] | 5974 | /* We are passing prf_output_length as mac_size because the driver |
| 5975 | * function directly sets mac_output_length as mac_size upon success. |
Kusumit Ghoderao | 5f3345a | 2023-07-27 21:21:38 +0530 | [diff] [blame] | 5976 | * See https://github.com/Mbed-TLS/mbedtls/issues/7801 */ |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5977 | status = psa_driver_wrapper_mac_compute(attributes, |
| 5978 | pbkdf2->password, |
| 5979 | pbkdf2->password_length, |
| 5980 | prf_alg, U_i, prf_output_length, |
Kusumit Ghoderao | 4536bb6 | 2023-06-22 15:42:59 +0530 | [diff] [blame] | 5981 | U_i, prf_output_length, |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5982 | &mac_output_length); |
| 5983 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5984 | goto cleanup; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5985 | } |
| 5986 | |
Kusumit Ghoderao | 109ee3d | 2023-06-08 16:36:45 +0530 | [diff] [blame] | 5987 | mbedtls_xor(U_accumulator, U_accumulator, U_i, prf_output_length); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5988 | } |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5989 | |
| 5990 | cleanup: |
| 5991 | /* Zeroise buffers to clear sensitive data from memory. */ |
| 5992 | mbedtls_platform_zeroize(U_i, PSA_MAC_MAX_SIZE); |
| 5993 | return status; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5994 | } |
Kusumit Ghoderao | f6a0d57 | 2023-06-05 14:55:56 +0530 | [diff] [blame] | 5995 | |
| 5996 | static psa_status_t psa_key_derivation_pbkdf2_read( |
| 5997 | psa_pbkdf2_key_derivation_t *pbkdf2, |
| 5998 | psa_algorithm_t kdf_alg, |
| 5999 | uint8_t *output, |
| 6000 | size_t output_length) |
| 6001 | { |
| 6002 | psa_status_t status; |
| 6003 | psa_algorithm_t prf_alg; |
| 6004 | uint8_t prf_output_length; |
| 6005 | psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
| 6006 | psa_set_key_bits(&attributes, PSA_BYTES_TO_BITS(pbkdf2->password_length)); |
| 6007 | psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_SIGN_MESSAGE); |
| 6008 | |
| 6009 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 6010 | prf_alg = PSA_ALG_HMAC(PSA_ALG_PBKDF2_HMAC_GET_HASH(kdf_alg)); |
| 6011 | prf_output_length = PSA_HASH_LENGTH(prf_alg); |
| 6012 | psa_set_key_type(&attributes, PSA_KEY_TYPE_HMAC); |
Kusumit Ghoderao | a2520a5 | 2023-06-22 15:42:19 +0530 | [diff] [blame] | 6013 | } else if (kdf_alg == PSA_ALG_PBKDF2_AES_CMAC_PRF_128) { |
| 6014 | prf_alg = PSA_ALG_CMAC; |
Kusumit Ghoderao | a12e2d5 | 2023-07-27 21:18:30 +0530 | [diff] [blame] | 6015 | prf_output_length = PSA_MAC_LENGTH(PSA_KEY_TYPE_AES, 128U, PSA_ALG_CMAC); |
Kusumit Ghoderao | a2520a5 | 2023-06-22 15:42:19 +0530 | [diff] [blame] | 6016 | psa_set_key_type(&attributes, PSA_KEY_TYPE_AES); |
Kusumit Ghoderao | d9ec1af | 2023-06-08 20:19:51 +0530 | [diff] [blame] | 6017 | } else { |
| 6018 | return PSA_ERROR_INVALID_ARGUMENT; |
Kusumit Ghoderao | f6a0d57 | 2023-06-05 14:55:56 +0530 | [diff] [blame] | 6019 | } |
| 6020 | |
| 6021 | switch (pbkdf2->state) { |
| 6022 | case PSA_PBKDF2_STATE_PASSWORD_SET: |
| 6023 | /* Initially we need a new block so bytes_used is equal to block size*/ |
| 6024 | pbkdf2->bytes_used = prf_output_length; |
| 6025 | pbkdf2->state = PSA_PBKDF2_STATE_OUTPUT; |
| 6026 | break; |
| 6027 | case PSA_PBKDF2_STATE_OUTPUT: |
| 6028 | break; |
| 6029 | default: |
| 6030 | return PSA_ERROR_BAD_STATE; |
| 6031 | } |
| 6032 | |
| 6033 | while (output_length != 0) { |
| 6034 | uint8_t n = prf_output_length - pbkdf2->bytes_used; |
| 6035 | if (n > output_length) { |
| 6036 | n = (uint8_t) output_length; |
| 6037 | } |
| 6038 | memcpy(output, pbkdf2->output_block + pbkdf2->bytes_used, n); |
| 6039 | output += n; |
| 6040 | output_length -= n; |
| 6041 | pbkdf2->bytes_used += n; |
| 6042 | |
| 6043 | if (output_length == 0) { |
| 6044 | break; |
| 6045 | } |
| 6046 | |
| 6047 | /* We need a new block */ |
| 6048 | pbkdf2->bytes_used = 0; |
| 6049 | pbkdf2->block_number++; |
| 6050 | |
| 6051 | status = psa_key_derivation_pbkdf2_generate_block(pbkdf2, prf_alg, |
| 6052 | prf_output_length, |
| 6053 | &attributes); |
| 6054 | if (status != PSA_SUCCESS) { |
| 6055 | return status; |
| 6056 | } |
| 6057 | } |
| 6058 | |
| 6059 | return PSA_SUCCESS; |
| 6060 | } |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 6061 | #endif /* PSA_HAVE_SOFT_PBKDF2 */ |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 6062 | |
Janos Follath | 6c6c8fc | 2019-06-17 12:38:20 +0100 | [diff] [blame] | 6063 | psa_status_t psa_key_derivation_output_bytes( |
| 6064 | psa_key_derivation_operation_t *operation, |
Ryan Everett | f943e22 | 2024-01-19 14:46:39 +0000 | [diff] [blame] | 6065 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6066 | size_t output_length) |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6067 | { |
| 6068 | psa_status_t status; |
Ryan Everett | f943e22 | 2024-01-19 14:46:39 +0000 | [diff] [blame] | 6069 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 6070 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6071 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6072 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6073 | if (operation->alg == 0) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6074 | /* This is a blank operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6075 | return PSA_ERROR_BAD_STATE; |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 6076 | } |
| 6077 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6078 | if (output_length == 0 && operation->capacity == 0) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6079 | /* Edge case: this is a finished operation, and 0 bytes |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 6080 | * were requested. The right error in this case could |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6081 | * be either INSUFFICIENT_CAPACITY or BAD_STATE. Return |
| 6082 | * INSUFFICIENT_CAPACITY, which is right for a finished |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6083 | * operation, for consistency with the case when |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6084 | * output_length > 0. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6085 | return PSA_ERROR_INSUFFICIENT_DATA; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6086 | } |
Ryan Everett | f943e22 | 2024-01-19 14:46:39 +0000 | [diff] [blame] | 6087 | |
| 6088 | LOCAL_OUTPUT_ALLOC(output_external, output_length, output); |
Ryan Everett | da9227d | 2024-01-25 11:37:22 +0000 | [diff] [blame] | 6089 | if (output_length > operation->capacity) { |
| 6090 | operation->capacity = 0; |
| 6091 | /* Go through the error path to wipe all confidential data now |
| 6092 | * that the operation object is useless. */ |
| 6093 | status = PSA_ERROR_INSUFFICIENT_DATA; |
| 6094 | goto exit; |
| 6095 | } |
| 6096 | |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6097 | operation->capacity -= output_length; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6098 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6099 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6100 | if (PSA_ALG_IS_ANY_HKDF(kdf_alg)) { |
| 6101 | status = psa_key_derivation_hkdf_read(&operation->ctx.hkdf, kdf_alg, |
| 6102 | output, output_length); |
| 6103 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6104 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6105 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 6106 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6107 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg) || |
| 6108 | PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 6109 | status = psa_key_derivation_tls12_prf_read(&operation->ctx.tls12_prf, |
| 6110 | kdf_alg, output, |
| 6111 | output_length); |
| 6112 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6113 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF || |
| 6114 | * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6115 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6116 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6117 | status = psa_key_derivation_tls12_ecjpake_to_pms_read( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6118 | &operation->ctx.tls12_ecjpake_to_pms, output, output_length); |
| 6119 | } else |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6120 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */ |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 6121 | #if defined(PSA_HAVE_SOFT_PBKDF2) |
Kusumit Ghoderao | 9ab03c3 | 2023-07-27 21:14:05 +0530 | [diff] [blame] | 6122 | if (PSA_ALG_IS_PBKDF2(kdf_alg)) { |
Kusumit Ghoderao | f6a0d57 | 2023-06-05 14:55:56 +0530 | [diff] [blame] | 6123 | status = psa_key_derivation_pbkdf2_read(&operation->ctx.pbkdf2, kdf_alg, |
| 6124 | output, output_length); |
Kusumit Ghoderao | 056f0c5 | 2023-05-03 15:58:34 +0530 | [diff] [blame] | 6125 | } else |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 6126 | #endif /* PSA_HAVE_SOFT_PBKDF2 */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6127 | |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6128 | { |
Steven Cooreman | 74afe47 | 2021-02-10 17:19:22 +0100 | [diff] [blame] | 6129 | (void) kdf_alg; |
Ryan Everett | f943e22 | 2024-01-19 14:46:39 +0000 | [diff] [blame] | 6130 | status = PSA_ERROR_BAD_STATE; |
| 6131 | LOCAL_OUTPUT_FREE(output_external, output); |
| 6132 | |
| 6133 | return status; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6134 | } |
| 6135 | |
| 6136 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6137 | if (status != PSA_SUCCESS) { |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 6138 | /* Preserve the algorithm upon errors, but clear all sensitive state. |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6139 | * This allows us to differentiate between exhausted operations and |
| 6140 | * blank operations, so we can return PSA_ERROR_BAD_STATE on blank |
| 6141 | * operations. */ |
| 6142 | psa_algorithm_t alg = operation->alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6143 | psa_key_derivation_abort(operation); |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6144 | operation->alg = alg; |
Ryan Everett | ee5920a | 2024-02-09 15:09:28 +0000 | [diff] [blame] | 6145 | if (output != NULL) { |
| 6146 | memset(output, '!', output_length); |
| 6147 | } |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6148 | } |
Ryan Everett | da9227d | 2024-01-25 11:37:22 +0000 | [diff] [blame] | 6149 | |
| 6150 | LOCAL_OUTPUT_FREE(output_external, output); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6151 | return status; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6152 | } |
| 6153 | |
David Brown | 7807bf7 | 2021-02-09 16:28:23 -0700 | [diff] [blame] | 6154 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6155 | static void psa_des_set_key_parity(uint8_t *data, size_t data_size) |
Gilles Peskine | 08542d8 | 2018-07-19 17:05:42 +0200 | [diff] [blame] | 6156 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6157 | if (data_size >= 8) { |
| 6158 | mbedtls_des_key_set_parity(data); |
| 6159 | } |
| 6160 | if (data_size >= 16) { |
| 6161 | mbedtls_des_key_set_parity(data + 8); |
| 6162 | } |
| 6163 | if (data_size >= 24) { |
| 6164 | mbedtls_des_key_set_parity(data + 16); |
| 6165 | } |
Gilles Peskine | 08542d8 | 2018-07-19 17:05:42 +0200 | [diff] [blame] | 6166 | } |
David Brown | 7807bf7 | 2021-02-09 16:28:23 -0700 | [diff] [blame] | 6167 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */ |
Gilles Peskine | 08542d8 | 2018-07-19 17:05:42 +0200 | [diff] [blame] | 6168 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6169 | /* |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6170 | * ECC keys on a Weierstrass elliptic curve require the generation |
| 6171 | * of a private key which is an integer |
| 6172 | * in the range [1, N - 1], where N is the boundary of the private key domain: |
| 6173 | * N is the prime p for Diffie-Hellman, or the order of the |
| 6174 | * curve’s base point for ECC. |
| 6175 | * |
| 6176 | * Let m be the bit size of N, such that 2^m > N >= 2^(m-1). |
| 6177 | * This function generates the private key using the following process: |
| 6178 | * |
| 6179 | * 1. Draw a byte string of length ceiling(m/8) bytes. |
| 6180 | * 2. If m is not a multiple of 8, set the most significant |
| 6181 | * (8 * ceiling(m/8) - m) bits of the first byte in the string to zero. |
| 6182 | * 3. Convert the string to integer k by decoding it as a big-endian byte string. |
| 6183 | * 4. If k > N - 2, discard the result and return to step 1. |
| 6184 | * 5. Output k + 1 as the private key. |
| 6185 | * |
| 6186 | * This method allows compliance to NIST standards, specifically the methods titled |
| 6187 | * Key-Pair Generation by Testing Candidates in the following publications: |
| 6188 | * - NIST Special Publication 800-56A: Recommendation for Pair-Wise Key-Establishment |
| 6189 | * Schemes Using Discrete Logarithm Cryptography [SP800-56A] §5.6.1.1.4 for |
| 6190 | * Diffie-Hellman keys. |
| 6191 | * |
| 6192 | * - [SP800-56A] §5.6.1.2.2 or FIPS Publication 186-4: Digital Signature |
| 6193 | * Standard (DSS) [FIPS186-4] §B.4.2 for elliptic curve keys. |
| 6194 | * |
| 6195 | * Note: Function allocates memory for *data buffer, so given *data should be |
| 6196 | * always NULL. |
| 6197 | */ |
Valerio Setti | 86587ab | 2023-06-27 13:09:30 +0200 | [diff] [blame] | 6198 | #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE) |
| 6199 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE) |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 6200 | static psa_status_t psa_generate_derived_ecc_key_weierstrass_helper( |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6201 | psa_key_slot_t *slot, |
| 6202 | size_t bits, |
| 6203 | psa_key_derivation_operation_t *operation, |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6204 | uint8_t **data |
| 6205 | ) |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6206 | { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6207 | unsigned key_out_of_range = 1; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6208 | mbedtls_mpi k; |
| 6209 | mbedtls_mpi diff_N_2; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6210 | int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | a81aed2 | 2022-03-01 15:13:30 +0100 | [diff] [blame] | 6211 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 6212 | size_t m; |
| 6213 | size_t m_bytes; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6214 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6215 | mbedtls_mpi_init(&k); |
| 6216 | mbedtls_mpi_init(&diff_N_2); |
Przemyslaw Stekiel | 1dfd122 | 2021-11-18 13:35:00 +0100 | [diff] [blame] | 6217 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6218 | psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6219 | slot->attr.type); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6220 | mbedtls_ecp_group_id grp_id = |
Valerio Setti | d36c313 | 2023-12-21 14:03:51 +0100 | [diff] [blame] | 6221 | mbedtls_ecc_group_from_psa(curve, bits); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6222 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6223 | if (grp_id == MBEDTLS_ECP_DP_NONE) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6224 | ret = MBEDTLS_ERR_ASN1_INVALID_DATA; |
Przemyslaw Stekiel | 871a336 | 2021-12-02 08:46:39 +0100 | [diff] [blame] | 6225 | goto cleanup; |
| 6226 | } |
| 6227 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6228 | mbedtls_ecp_group ecp_group; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6229 | mbedtls_ecp_group_init(&ecp_group); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6230 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6231 | MBEDTLS_MPI_CHK(mbedtls_ecp_group_load(&ecp_group, grp_id)); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6232 | |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6233 | /* N is the boundary of the private key domain (ecp_group.N). */ |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6234 | /* Let m be the bit size of N. */ |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 6235 | m = ecp_group.nbits; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6236 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 6237 | m_bytes = PSA_BITS_TO_BYTES(m); |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6238 | |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6239 | /* Calculate N - 2 - it will be needed later. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6240 | MBEDTLS_MPI_CHK(mbedtls_mpi_sub_int(&diff_N_2, &ecp_group.N, 2)); |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6241 | |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6242 | /* Note: This function is always called with *data == NULL and it |
| 6243 | * allocates memory for the data buffer. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6244 | *data = mbedtls_calloc(1, m_bytes); |
| 6245 | if (*data == NULL) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6246 | ret = MBEDTLS_ERR_ASN1_ALLOC_FAILED; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6247 | goto cleanup; |
| 6248 | } |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6249 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6250 | while (key_out_of_range) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6251 | /* 1. Draw a byte string of length ceiling(m/8) bytes. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6252 | if ((status = psa_key_derivation_output_bytes(operation, *data, m_bytes)) != 0) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6253 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6254 | } |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6255 | |
| 6256 | /* 2. If m is not a multiple of 8 */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6257 | if (m % 8 != 0) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6258 | /* Set the most significant |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6259 | * (8 * ceiling(m/8) - m) bits of the first byte in |
| 6260 | * the string to zero. |
| 6261 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6262 | uint8_t clear_bit_mask = (1 << (m % 8)) - 1; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6263 | (*data)[0] &= clear_bit_mask; |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6264 | } |
| 6265 | |
| 6266 | /* 3. Convert the string to integer k by decoding it as a |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6267 | * big-endian byte string. |
| 6268 | */ |
| 6269 | MBEDTLS_MPI_CHK(mbedtls_mpi_read_binary(&k, *data, m_bytes)); |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6270 | |
| 6271 | /* 4. If k > N - 2, discard the result and return to step 1. |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6272 | * Result of comparison is returned. When it indicates error |
| 6273 | * then this function is called again. |
| 6274 | */ |
| 6275 | MBEDTLS_MPI_CHK(mbedtls_mpi_lt_mpi_ct(&diff_N_2, &k, &key_out_of_range)); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6276 | } |
| 6277 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6278 | /* 5. Output k + 1 as the private key. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6279 | MBEDTLS_MPI_CHK(mbedtls_mpi_add_int(&k, &k, 1)); |
| 6280 | MBEDTLS_MPI_CHK(mbedtls_mpi_write_binary(&k, *data, m_bytes)); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6281 | cleanup: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6282 | if (ret != 0) { |
| 6283 | status = mbedtls_to_psa_error(ret); |
| 6284 | } |
| 6285 | if (status != PSA_SUCCESS) { |
| 6286 | mbedtls_free(*data); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6287 | *data = NULL; |
| 6288 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6289 | mbedtls_mpi_free(&k); |
| 6290 | mbedtls_mpi_free(&diff_N_2); |
| 6291 | return status; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6292 | } |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6293 | |
| 6294 | /* ECC keys on a Montgomery elliptic curve draws a byte string whose length |
| 6295 | * is determined by the curve, and sets the mandatory bits accordingly. That is: |
| 6296 | * |
| 6297 | * - Curve25519 (PSA_ECC_FAMILY_MONTGOMERY, 255 bits): |
| 6298 | * draw a 32-byte string and process it as specified in |
| 6299 | * Elliptic Curves for Security [RFC7748] §5. |
| 6300 | * |
| 6301 | * - Curve448 (PSA_ECC_FAMILY_MONTGOMERY, 448 bits): |
| 6302 | * draw a 56-byte string and process it as specified in [RFC7748] §5. |
| 6303 | * |
| 6304 | * Note: Function allocates memory for *data buffer, so given *data should be |
| 6305 | * always NULL. |
| 6306 | */ |
| 6307 | |
| 6308 | static psa_status_t psa_generate_derived_ecc_key_montgomery_helper( |
| 6309 | size_t bits, |
| 6310 | psa_key_derivation_operation_t *operation, |
| 6311 | uint8_t **data |
| 6312 | ) |
| 6313 | { |
| 6314 | size_t output_length; |
Przemek Stekiel | a81aed2 | 2022-03-01 15:13:30 +0100 | [diff] [blame] | 6315 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6316 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6317 | switch (bits) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6318 | case 255: |
| 6319 | output_length = 32; |
| 6320 | break; |
| 6321 | case 448: |
| 6322 | output_length = 56; |
| 6323 | break; |
| 6324 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6325 | return PSA_ERROR_INVALID_ARGUMENT; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6326 | break; |
| 6327 | } |
| 6328 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6329 | *data = mbedtls_calloc(1, output_length); |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6330 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6331 | if (*data == NULL) { |
| 6332 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6333 | } |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6334 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6335 | status = psa_key_derivation_output_bytes(operation, *data, output_length); |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6336 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6337 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6338 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6339 | } |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6340 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6341 | switch (bits) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6342 | case 255: |
| 6343 | (*data)[0] &= 248; |
| 6344 | (*data)[31] &= 127; |
| 6345 | (*data)[31] |= 64; |
| 6346 | break; |
| 6347 | case 448: |
| 6348 | (*data)[0] &= 252; |
| 6349 | (*data)[55] |= 128; |
| 6350 | break; |
| 6351 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6352 | return PSA_ERROR_CORRUPTION_DETECTED; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 6353 | break; |
| 6354 | } |
| 6355 | |
| 6356 | return status; |
| 6357 | } |
Valerio Setti | 86587ab | 2023-06-27 13:09:30 +0200 | [diff] [blame] | 6358 | #else /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE */ |
| 6359 | static psa_status_t psa_generate_derived_ecc_key_weierstrass_helper( |
| 6360 | psa_key_slot_t *slot, size_t bits, |
| 6361 | psa_key_derivation_operation_t *operation, uint8_t **data) |
| 6362 | { |
| 6363 | (void) slot; |
| 6364 | (void) bits; |
| 6365 | (void) operation; |
| 6366 | (void) data; |
| 6367 | return PSA_ERROR_NOT_SUPPORTED; |
| 6368 | } |
| 6369 | |
| 6370 | static psa_status_t psa_generate_derived_ecc_key_montgomery_helper( |
| 6371 | size_t bits, psa_key_derivation_operation_t *operation, uint8_t **data) |
| 6372 | { |
| 6373 | (void) bits; |
| 6374 | (void) operation; |
| 6375 | (void) data; |
| 6376 | return PSA_ERROR_NOT_SUPPORTED; |
| 6377 | } |
| 6378 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE */ |
| 6379 | #endif /* PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE */ |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 6380 | |
Adrian L. Shaw | 5a5a79a | 2019-05-03 15:44:28 +0100 | [diff] [blame] | 6381 | static psa_status_t psa_generate_derived_key_internal( |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 6382 | psa_key_slot_t *slot, |
| 6383 | size_t bits, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6384 | psa_key_derivation_operation_t *operation) |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6385 | { |
| 6386 | uint8_t *data = NULL; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6387 | size_t bytes = PSA_BITS_TO_BYTES(bits); |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6388 | size_t storage_size = bytes; |
Przemek Stekiel | a81aed2 | 2022-03-01 15:13:30 +0100 | [diff] [blame] | 6389 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6390 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6391 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type)) { |
| 6392 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6393 | } |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6394 | |
Valerio Setti | 8ffdb5d | 2023-06-20 13:14:08 +0200 | [diff] [blame] | 6395 | #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE) || \ |
Valerio Setti | dd24f29 | 2023-06-26 12:21:17 +0200 | [diff] [blame] | 6396 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6397 | if (PSA_KEY_TYPE_IS_ECC(slot->attr.type)) { |
| 6398 | psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY(slot->attr.type); |
| 6399 | if (PSA_ECC_FAMILY_IS_WEIERSTRASS(curve)) { |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 6400 | /* Weierstrass elliptic curve */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6401 | status = psa_generate_derived_ecc_key_weierstrass_helper(slot, bits, operation, &data); |
| 6402 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 6403 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6404 | } |
| 6405 | } else { |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 6406 | /* Montgomery elliptic curve */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6407 | status = psa_generate_derived_ecc_key_montgomery_helper(bits, operation, &data); |
| 6408 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 6409 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6410 | } |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 6411 | } |
Przemyslaw Stekiel | 1dfd122 | 2021-11-18 13:35:00 +0100 | [diff] [blame] | 6412 | } else |
Valerio Setti | 8ffdb5d | 2023-06-20 13:14:08 +0200 | [diff] [blame] | 6413 | #endif /* defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE) || |
Valerio Setti | dd24f29 | 2023-06-26 12:21:17 +0200 | [diff] [blame] | 6414 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6415 | if (key_type_is_raw_bytes(slot->attr.type)) { |
| 6416 | if (bits % 8 != 0) { |
| 6417 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6418 | } |
| 6419 | data = mbedtls_calloc(1, bytes); |
| 6420 | if (data == NULL) { |
| 6421 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6422 | } |
Przemyslaw Stekiel | 1608e33 | 2021-11-09 10:46:40 +0100 | [diff] [blame] | 6423 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6424 | status = psa_key_derivation_output_bytes(operation, data, bytes); |
| 6425 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | 1608e33 | 2021-11-09 10:46:40 +0100 | [diff] [blame] | 6426 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6427 | } |
David Brown | 12ca503 | 2021-02-11 11:02:00 -0700 | [diff] [blame] | 6428 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6429 | if (slot->attr.type == PSA_KEY_TYPE_DES) { |
| 6430 | psa_des_set_key_parity(data, bytes); |
| 6431 | } |
Przemek Stekiel | f110dc0 | 2022-03-01 14:48:05 +0100 | [diff] [blame] | 6432 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6433 | } else { |
| 6434 | return PSA_ERROR_NOT_SUPPORTED; |
Przemyslaw Stekiel | 1608e33 | 2021-11-09 10:46:40 +0100 | [diff] [blame] | 6435 | } |
Ronald Cron | dd04d42 | 2020-11-28 15:14:42 +0100 | [diff] [blame] | 6436 | |
Ronald Cron | bf33c93 | 2020-11-28 18:06:53 +0100 | [diff] [blame] | 6437 | slot->attr.bits = (psa_key_bits_t) bits; |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 6438 | |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 6439 | if (psa_key_lifetime_is_external(slot->attr.lifetime)) { |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 6440 | status = psa_driver_wrapper_get_key_buffer_size(&slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6441 | &storage_size); |
| 6442 | if (status != PSA_SUCCESS) { |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6443 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6444 | } |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6445 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6446 | status = psa_allocate_buffer_to_slot(slot, storage_size); |
| 6447 | if (status != PSA_SUCCESS) { |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6448 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6449 | } |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6450 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 6451 | status = psa_driver_wrapper_import_key(&slot->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6452 | data, bytes, |
| 6453 | slot->key.data, |
| 6454 | slot->key.bytes, |
| 6455 | &slot->key.bytes, &bits); |
| 6456 | if (bits != slot->attr.bits) { |
Ronald Cron | bf33c93 | 2020-11-28 18:06:53 +0100 | [diff] [blame] | 6457 | status = PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6458 | } |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6459 | |
| 6460 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6461 | mbedtls_free(data); |
| 6462 | return status; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6463 | } |
| 6464 | |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6465 | static const psa_custom_key_parameters_t default_custom_production = |
Gilles Peskine | 4a85ff3 | 2024-07-18 18:52:59 +0200 | [diff] [blame] | 6466 | PSA_CUSTOM_KEY_PARAMETERS_INIT; |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6467 | |
Gilles Peskine | 52504f8 | 2024-06-20 17:19:58 +0200 | [diff] [blame] | 6468 | int psa_custom_key_parameters_are_default( |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6469 | const psa_custom_key_parameters_t *custom, |
| 6470 | size_t custom_data_length) |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6471 | { |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6472 | if (custom->flags != 0) { |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6473 | return 0; |
| 6474 | } |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6475 | if (custom_data_length != 0) { |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6476 | return 0; |
| 6477 | } |
| 6478 | return 1; |
| 6479 | } |
| 6480 | |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6481 | psa_status_t psa_key_derivation_output_key_custom( |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6482 | const psa_key_attributes_t *attributes, |
| 6483 | psa_key_derivation_operation_t *operation, |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6484 | const psa_custom_key_parameters_t *custom, |
| 6485 | const uint8_t *custom_data, |
| 6486 | size_t custom_data_length, |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6487 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 6488 | { |
| 6489 | psa_status_t status; |
| 6490 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 6491 | psa_se_drv_table_entry_t *driver = NULL; |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 6492 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 6493 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
| 6494 | |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 6495 | /* Reject any attempt to create a zero-length key so that we don't |
| 6496 | * risk tripping up later, e.g. on a malloc(0) that returns NULL. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6497 | if (psa_get_key_bits(attributes) == 0) { |
| 6498 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6499 | } |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 6500 | |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6501 | (void) custom_data; /* We only accept 0-length data */ |
Gilles Peskine | 52504f8 | 2024-06-20 17:19:58 +0200 | [diff] [blame] | 6502 | if (!psa_custom_key_parameters_are_default(custom, custom_data_length)) { |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6503 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6504 | } |
| 6505 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6506 | if (operation->alg == PSA_ALG_NONE) { |
| 6507 | return PSA_ERROR_BAD_STATE; |
| 6508 | } |
Dave Rodgman | d69da6c | 2021-11-16 10:32:48 +0000 | [diff] [blame] | 6509 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6510 | if (!operation->can_output_key) { |
| 6511 | return PSA_ERROR_NOT_PERMITTED; |
| 6512 | } |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 6513 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6514 | status = psa_start_key_creation(PSA_KEY_CREATION_DERIVE, attributes, |
| 6515 | &slot, &driver); |
Gilles Peskine | f4ee662 | 2019-07-24 13:44:30 +0200 | [diff] [blame] | 6516 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6517 | if (driver != NULL) { |
Gilles Peskine | f4ee662 | 2019-07-24 13:44:30 +0200 | [diff] [blame] | 6518 | /* Deriving a key in a secure element is not implemented yet. */ |
| 6519 | status = PSA_ERROR_NOT_SUPPORTED; |
| 6520 | } |
| 6521 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6522 | if (status == PSA_SUCCESS) { |
| 6523 | status = psa_generate_derived_key_internal(slot, |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 6524 | attributes->bits, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6525 | operation); |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 6526 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6527 | if (status == PSA_SUCCESS) { |
| 6528 | status = psa_finish_key_creation(slot, driver, key); |
| 6529 | } |
| 6530 | if (status != PSA_SUCCESS) { |
| 6531 | psa_fail_key_creation(slot, driver); |
| 6532 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 6533 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6534 | return status; |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 6535 | } |
| 6536 | |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6537 | psa_status_t psa_key_derivation_output_key_ext( |
| 6538 | const psa_key_attributes_t *attributes, |
| 6539 | psa_key_derivation_operation_t *operation, |
| 6540 | const psa_key_production_parameters_t *params, |
| 6541 | size_t params_data_length, |
| 6542 | mbedtls_svc_key_id_t *key) |
| 6543 | { |
| 6544 | return psa_key_derivation_output_key_custom( |
| 6545 | attributes, operation, |
| 6546 | (const psa_custom_key_parameters_t *) params, |
| 6547 | params->data, params_data_length, |
| 6548 | key); |
| 6549 | } |
| 6550 | |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6551 | psa_status_t psa_key_derivation_output_key( |
| 6552 | const psa_key_attributes_t *attributes, |
| 6553 | psa_key_derivation_operation_t *operation, |
| 6554 | mbedtls_svc_key_id_t *key) |
| 6555 | { |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 6556 | return psa_key_derivation_output_key_custom(attributes, operation, |
| 6557 | &default_custom_production, |
| 6558 | NULL, 0, |
| 6559 | key); |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 6560 | } |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6561 | |
| 6562 | |
| 6563 | /****************************************************************/ |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 6564 | /* Key derivation */ |
| 6565 | /****************************************************************/ |
| 6566 | |
Steven Cooreman | 932ffb7 | 2021-02-15 12:14:32 +0100 | [diff] [blame] | 6567 | #if defined(AT_LEAST_ONE_BUILTIN_KDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6568 | static int is_kdf_alg_supported(psa_algorithm_t kdf_alg) |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6569 | { |
| 6570 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6571 | if (PSA_ALG_IS_HKDF(kdf_alg)) { |
| 6572 | return 1; |
| 6573 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6574 | #endif |
Przemek Stekiel | b57a44b | 2022-06-06 08:33:45 +0200 | [diff] [blame] | 6575 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6576 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
| 6577 | return 1; |
| 6578 | } |
Przemek Stekiel | b57a44b | 2022-06-06 08:33:45 +0200 | [diff] [blame] | 6579 | #endif |
| 6580 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6581 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg)) { |
| 6582 | return 1; |
| 6583 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6584 | #endif |
| 6585 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6586 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg)) { |
| 6587 | return 1; |
| 6588 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6589 | #endif |
| 6590 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6591 | if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 6592 | return 1; |
| 6593 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6594 | #endif |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6595 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6596 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 6597 | return 1; |
| 6598 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6599 | #endif |
Kusumit Ghoderao | d132cac | 2023-05-03 12:00:27 +0530 | [diff] [blame] | 6600 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 6601 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 6602 | return 1; |
| 6603 | } |
| 6604 | #endif |
Kusumit Ghoderao | 2cd6496 | 2023-06-22 15:38:57 +0530 | [diff] [blame] | 6605 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_AES_CMAC_PRF_128) |
| 6606 | if (kdf_alg == PSA_ALG_PBKDF2_AES_CMAC_PRF_128) { |
| 6607 | return 1; |
| 6608 | } |
| 6609 | #endif |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6610 | return 0; |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6611 | } |
| 6612 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6613 | static psa_status_t psa_hash_try_support(psa_algorithm_t alg) |
Gilles Peskine | 0cc417d | 2021-04-29 21:18:14 +0200 | [diff] [blame] | 6614 | { |
| 6615 | psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6616 | psa_status_t status = psa_hash_setup(&operation, alg); |
| 6617 | psa_hash_abort(&operation); |
| 6618 | return status; |
Gilles Peskine | 0cc417d | 2021-04-29 21:18:14 +0200 | [diff] [blame] | 6619 | } |
| 6620 | |
Kusumit Ghoderao | 86e83dd | 2023-12-01 16:38:26 +0530 | [diff] [blame] | 6621 | static psa_status_t psa_key_derivation_set_maximum_capacity( |
| 6622 | psa_key_derivation_operation_t *operation, |
| 6623 | psa_algorithm_t kdf_alg) |
| 6624 | { |
| 6625 | #if defined(PSA_WANT_ALG_TLS12_ECJPAKE_TO_PMS) |
| 6626 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 6627 | operation->capacity = PSA_HASH_LENGTH(PSA_ALG_SHA_256); |
| 6628 | return PSA_SUCCESS; |
| 6629 | } |
| 6630 | #endif |
| 6631 | #if defined(PSA_WANT_ALG_PBKDF2_AES_CMAC_PRF_128) |
| 6632 | if (kdf_alg == PSA_ALG_PBKDF2_AES_CMAC_PRF_128) { |
| 6633 | #if (SIZE_MAX > UINT32_MAX) |
Kusumit Ghoderao | 7d4db63 | 2023-12-07 16:17:46 +0530 | [diff] [blame] | 6634 | operation->capacity = UINT32_MAX * (size_t) PSA_MAC_LENGTH( |
Kusumit Ghoderao | d3f70d3 | 2023-12-06 16:20:04 +0530 | [diff] [blame] | 6635 | PSA_KEY_TYPE_AES, |
| 6636 | 128U, |
| 6637 | PSA_ALG_CMAC); |
Kusumit Ghoderao | 86e83dd | 2023-12-01 16:38:26 +0530 | [diff] [blame] | 6638 | #else |
| 6639 | operation->capacity = SIZE_MAX; |
| 6640 | #endif |
| 6641 | return PSA_SUCCESS; |
| 6642 | } |
| 6643 | #endif /* PSA_WANT_ALG_PBKDF2_AES_CMAC_PRF_128 */ |
| 6644 | |
| 6645 | /* After this point, if kdf_alg is not valid then value of hash_alg may be |
| 6646 | * invalid or meaningless but it does not affect this function */ |
| 6647 | psa_algorithm_t hash_alg = PSA_ALG_GET_HASH(kdf_alg); |
| 6648 | size_t hash_size = PSA_HASH_LENGTH(hash_alg); |
Kusumit Ghoderao | d3f70d3 | 2023-12-06 16:20:04 +0530 | [diff] [blame] | 6649 | if (hash_size == 0) { |
| 6650 | return PSA_ERROR_NOT_SUPPORTED; |
| 6651 | } |
Kusumit Ghoderao | 86e83dd | 2023-12-01 16:38:26 +0530 | [diff] [blame] | 6652 | |
| 6653 | /* Make sure that hash_alg is a supported hash algorithm. Otherwise |
| 6654 | * we might fail later, which is somewhat unfriendly and potentially |
| 6655 | * risk-prone. */ |
| 6656 | psa_status_t status = psa_hash_try_support(hash_alg); |
| 6657 | if (status != PSA_SUCCESS) { |
| 6658 | return status; |
| 6659 | } |
| 6660 | |
| 6661 | #if defined(PSA_WANT_ALG_HKDF) |
| 6662 | if (PSA_ALG_IS_HKDF(kdf_alg)) { |
| 6663 | operation->capacity = 255 * hash_size; |
| 6664 | } else |
| 6665 | #endif |
| 6666 | #if defined(PSA_WANT_ALG_HKDF_EXTRACT) |
| 6667 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
| 6668 | operation->capacity = hash_size; |
| 6669 | } else |
| 6670 | #endif |
| 6671 | #if defined(PSA_WANT_ALG_HKDF_EXPAND) |
| 6672 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg)) { |
| 6673 | operation->capacity = 255 * hash_size; |
| 6674 | } else |
| 6675 | #endif |
| 6676 | #if defined(PSA_WANT_ALG_TLS12_PRF) |
| 6677 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg) && |
| 6678 | (hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384)) { |
| 6679 | operation->capacity = SIZE_MAX; |
| 6680 | } else |
| 6681 | #endif |
| 6682 | #if defined(PSA_WANT_ALG_TLS12_PSK_TO_MS) |
| 6683 | if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg) && |
| 6684 | (hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384)) { |
| 6685 | /* Master Secret is always 48 bytes |
| 6686 | * https://datatracker.ietf.org/doc/html/rfc5246.html#section-8.1 */ |
| 6687 | operation->capacity = 48U; |
| 6688 | } else |
| 6689 | #endif |
| 6690 | #if defined(PSA_WANT_ALG_PBKDF2_HMAC) |
| 6691 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 6692 | #if (SIZE_MAX > UINT32_MAX) |
| 6693 | operation->capacity = UINT32_MAX * hash_size; |
| 6694 | #else |
| 6695 | operation->capacity = SIZE_MAX; |
| 6696 | #endif |
| 6697 | } else |
| 6698 | #endif /* PSA_WANT_ALG_PBKDF2_HMAC */ |
| 6699 | { |
Kusumit Ghoderao | d3f70d3 | 2023-12-06 16:20:04 +0530 | [diff] [blame] | 6700 | (void) hash_size; |
Kusumit Ghoderao | 86e83dd | 2023-12-01 16:38:26 +0530 | [diff] [blame] | 6701 | status = PSA_ERROR_NOT_SUPPORTED; |
| 6702 | } |
| 6703 | return status; |
| 6704 | } |
| 6705 | |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6706 | static psa_status_t psa_key_derivation_setup_kdf( |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6707 | psa_key_derivation_operation_t *operation, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6708 | psa_algorithm_t kdf_alg) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6709 | { |
Janos Follath | 5fe1973 | 2019-06-20 15:09:30 +0100 | [diff] [blame] | 6710 | /* Make sure that operation->ctx is properly zero-initialised. (Macro |
| 6711 | * initialisers for this union leave some bytes unspecified.) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6712 | memset(&operation->ctx, 0, sizeof(operation->ctx)); |
Janos Follath | 5fe1973 | 2019-06-20 15:09:30 +0100 | [diff] [blame] | 6713 | |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6714 | /* Make sure that kdf_alg is a supported key derivation algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6715 | if (!is_kdf_alg_supported(kdf_alg)) { |
| 6716 | return PSA_ERROR_NOT_SUPPORTED; |
| 6717 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6718 | |
Kusumit Ghoderao | 86e83dd | 2023-12-01 16:38:26 +0530 | [diff] [blame] | 6719 | psa_status_t status = psa_key_derivation_set_maximum_capacity(operation, |
| 6720 | kdf_alg); |
Kusumit Ghoderao | 5f3a938 | 2023-09-13 16:28:12 +0530 | [diff] [blame] | 6721 | return status; |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6722 | } |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6723 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6724 | static psa_status_t psa_key_agreement_try_support(psa_algorithm_t alg) |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6725 | { |
| 6726 | #if defined(PSA_WANT_ALG_ECDH) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6727 | if (alg == PSA_ALG_ECDH) { |
| 6728 | return PSA_SUCCESS; |
| 6729 | } |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6730 | #endif |
Przemek Stekiel | fb3dd54 | 2022-12-01 14:59:15 +0100 | [diff] [blame] | 6731 | #if defined(PSA_WANT_ALG_FFDH) |
| 6732 | if (alg == PSA_ALG_FFDH) { |
| 6733 | return PSA_SUCCESS; |
| 6734 | } |
| 6735 | #endif |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6736 | (void) alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6737 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6738 | } |
Gilles Peskine | bb3814c | 2022-12-16 01:12:12 +0100 | [diff] [blame] | 6739 | |
| 6740 | static int psa_key_derivation_allows_free_form_secret_input( |
| 6741 | psa_algorithm_t kdf_alg) |
| 6742 | { |
| 6743 | #if defined(PSA_WANT_ALG_TLS12_ECJPAKE_TO_PMS) |
| 6744 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 6745 | return 0; |
| 6746 | } |
| 6747 | #endif |
| 6748 | (void) kdf_alg; |
| 6749 | return 1; |
| 6750 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6751 | #endif /* AT_LEAST_ONE_BUILTIN_KDF */ |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6752 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6753 | psa_status_t psa_key_derivation_setup(psa_key_derivation_operation_t *operation, |
| 6754 | psa_algorithm_t alg) |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6755 | { |
| 6756 | psa_status_t status; |
| 6757 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6758 | if (operation->alg != 0) { |
| 6759 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6760 | } |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6761 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6762 | if (PSA_ALG_IS_RAW_KEY_AGREEMENT(alg)) { |
| 6763 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6764 | } else if (PSA_ALG_IS_KEY_AGREEMENT(alg)) { |
| 6765 | #if defined(AT_LEAST_ONE_BUILTIN_KDF) |
| 6766 | psa_algorithm_t kdf_alg = PSA_ALG_KEY_AGREEMENT_GET_KDF(alg); |
| 6767 | psa_algorithm_t ka_alg = PSA_ALG_KEY_AGREEMENT_GET_BASE(alg); |
| 6768 | status = psa_key_agreement_try_support(ka_alg); |
| 6769 | if (status != PSA_SUCCESS) { |
| 6770 | return status; |
| 6771 | } |
Gilles Peskine | bb3814c | 2022-12-16 01:12:12 +0100 | [diff] [blame] | 6772 | if (!psa_key_derivation_allows_free_form_secret_input(kdf_alg)) { |
| 6773 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6774 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6775 | status = psa_key_derivation_setup_kdf(operation, kdf_alg); |
| 6776 | #else |
| 6777 | return PSA_ERROR_NOT_SUPPORTED; |
| 6778 | #endif /* AT_LEAST_ONE_BUILTIN_KDF */ |
| 6779 | } else if (PSA_ALG_IS_KEY_DERIVATION(alg)) { |
| 6780 | #if defined(AT_LEAST_ONE_BUILTIN_KDF) |
| 6781 | status = psa_key_derivation_setup_kdf(operation, alg); |
| 6782 | #else |
| 6783 | return PSA_ERROR_NOT_SUPPORTED; |
| 6784 | #endif /* AT_LEAST_ONE_BUILTIN_KDF */ |
| 6785 | } else { |
| 6786 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6787 | } |
| 6788 | |
| 6789 | if (status == PSA_SUCCESS) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6790 | operation->alg = alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6791 | } |
| 6792 | return status; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6793 | } |
| 6794 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6795 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6796 | static psa_status_t psa_hkdf_input(psa_hkdf_key_derivation_t *hkdf, |
| 6797 | psa_algorithm_t kdf_alg, |
| 6798 | psa_key_derivation_step_t step, |
| 6799 | const uint8_t *data, |
| 6800 | size_t data_length) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6801 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6802 | psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg); |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6803 | psa_status_t status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6804 | switch (step) { |
Gilles Peskine | 03410b5 | 2019-05-16 16:05:19 +0200 | [diff] [blame] | 6805 | case PSA_KEY_DERIVATION_INPUT_SALT: |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6806 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6807 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg)) { |
| 6808 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6809 | } |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6810 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6811 | if (hkdf->state != HKDF_STATE_INIT) { |
| 6812 | return PSA_ERROR_BAD_STATE; |
| 6813 | } else { |
| 6814 | status = psa_key_derivation_start_hmac(&hkdf->hmac, |
| 6815 | hash_alg, |
| 6816 | data, data_length); |
| 6817 | if (status != PSA_SUCCESS) { |
| 6818 | return status; |
| 6819 | } |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 6820 | hkdf->state = HKDF_STATE_STARTED; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6821 | return PSA_SUCCESS; |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 6822 | } |
Gilles Peskine | 03410b5 | 2019-05-16 16:05:19 +0200 | [diff] [blame] | 6823 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6824 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6825 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg)) { |
Przemek Stekiel | 2fb0dcd | 2022-05-19 10:34:37 +0200 | [diff] [blame] | 6826 | /* We shouldn't be in different state as HKDF_EXPAND only allows |
| 6827 | * two inputs: SECRET (this case) and INFO which does not modify |
| 6828 | * the state. It could happen only if the hkdf |
| 6829 | * object was corrupted. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6830 | if (hkdf->state != HKDF_STATE_INIT) { |
| 6831 | return PSA_ERROR_BAD_STATE; |
| 6832 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6833 | |
Przemek Stekiel | 2fb0dcd | 2022-05-19 10:34:37 +0200 | [diff] [blame] | 6834 | /* Allow only input that fits expected prk size */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6835 | if (data_length != PSA_HASH_LENGTH(hash_alg)) { |
| 6836 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6837 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6838 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6839 | memcpy(hkdf->prk, data, data_length); |
| 6840 | } else |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6841 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND */ |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6842 | { |
Przemek Stekiel | 0586f4c | 2022-06-03 16:00:25 +0200 | [diff] [blame] | 6843 | /* HKDF: If no salt was provided, use an empty salt. |
| 6844 | * HKDF-EXTRACT: salt is mandatory. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6845 | if (hkdf->state == HKDF_STATE_INIT) { |
Przemek Stekiel | 0586f4c | 2022-06-03 16:00:25 +0200 | [diff] [blame] | 6846 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6847 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
| 6848 | return PSA_ERROR_BAD_STATE; |
| 6849 | } |
Przemek Stekiel | 0586f4c | 2022-06-03 16:00:25 +0200 | [diff] [blame] | 6850 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6851 | status = psa_key_derivation_start_hmac(&hkdf->hmac, |
| 6852 | hash_alg, |
| 6853 | NULL, 0); |
| 6854 | if (status != PSA_SUCCESS) { |
| 6855 | return status; |
| 6856 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6857 | hkdf->state = HKDF_STATE_STARTED; |
| 6858 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6859 | if (hkdf->state != HKDF_STATE_STARTED) { |
| 6860 | return PSA_ERROR_BAD_STATE; |
| 6861 | } |
| 6862 | status = psa_mac_update(&hkdf->hmac, |
| 6863 | data, data_length); |
| 6864 | if (status != PSA_SUCCESS) { |
| 6865 | return status; |
| 6866 | } |
| 6867 | status = psa_mac_sign_finish(&hkdf->hmac, |
| 6868 | hkdf->prk, |
| 6869 | sizeof(hkdf->prk), |
| 6870 | &data_length); |
| 6871 | if (status != PSA_SUCCESS) { |
| 6872 | return status; |
| 6873 | } |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6874 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6875 | |
Gilles Peskine | 2b522db | 2019-04-12 15:11:49 +0200 | [diff] [blame] | 6876 | hkdf->state = HKDF_STATE_KEYED; |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6877 | hkdf->block_number = 0; |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6878 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6879 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6880 | /* The only block of output is the PRK. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6881 | memcpy(hkdf->output_block, hkdf->prk, PSA_HASH_LENGTH(hash_alg)); |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6882 | hkdf->offset_in_block = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6883 | } else |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6884 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6885 | { |
| 6886 | /* Block 0 is empty, and the next block will be |
| 6887 | * generated by psa_key_derivation_hkdf_read(). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6888 | hkdf->offset_in_block = PSA_HASH_LENGTH(hash_alg); |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6889 | } |
| 6890 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6891 | return PSA_SUCCESS; |
Gilles Peskine | 03410b5 | 2019-05-16 16:05:19 +0200 | [diff] [blame] | 6892 | case PSA_KEY_DERIVATION_INPUT_INFO: |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6893 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6894 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
| 6895 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6896 | } |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6897 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Przemek Stekiel | cde3f78 | 2022-06-03 16:12:27 +0200 | [diff] [blame] | 6898 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6899 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg) && |
| 6900 | hkdf->state == HKDF_STATE_INIT) { |
| 6901 | return PSA_ERROR_BAD_STATE; |
| 6902 | } |
Przemek Stekiel | cde3f78 | 2022-06-03 16:12:27 +0200 | [diff] [blame] | 6903 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6904 | if (hkdf->state == HKDF_STATE_OUTPUT) { |
| 6905 | return PSA_ERROR_BAD_STATE; |
| 6906 | } |
| 6907 | if (hkdf->info_set) { |
| 6908 | return PSA_ERROR_BAD_STATE; |
| 6909 | } |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6910 | hkdf->info_length = data_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6911 | if (data_length != 0) { |
| 6912 | hkdf->info = mbedtls_calloc(1, data_length); |
| 6913 | if (hkdf->info == NULL) { |
| 6914 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6915 | } |
| 6916 | memcpy(hkdf->info, data, data_length); |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6917 | } |
| 6918 | hkdf->info_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6919 | return PSA_SUCCESS; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6920 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6921 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6922 | } |
| 6923 | } |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6924 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 6925 | |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6926 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 6927 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6928 | static psa_status_t psa_tls12_prf_set_seed(psa_tls12_prf_key_derivation_t *prf, |
| 6929 | const uint8_t *data, |
| 6930 | size_t data_length) |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6931 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6932 | if (prf->state != PSA_TLS12_PRF_STATE_INIT) { |
| 6933 | return PSA_ERROR_BAD_STATE; |
| 6934 | } |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6935 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6936 | if (data_length != 0) { |
| 6937 | prf->seed = mbedtls_calloc(1, data_length); |
| 6938 | if (prf->seed == NULL) { |
| 6939 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6940 | } |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6941 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6942 | memcpy(prf->seed, data, data_length); |
Janos Follath | d6dce9f | 2019-07-04 09:11:38 +0100 | [diff] [blame] | 6943 | prf->seed_length = data_length; |
| 6944 | } |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6945 | |
Gilles Peskine | 43f958b | 2020-12-13 14:55:14 +0100 | [diff] [blame] | 6946 | prf->state = PSA_TLS12_PRF_STATE_SEED_SET; |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6947 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6948 | return PSA_SUCCESS; |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6949 | } |
| 6950 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6951 | static psa_status_t psa_tls12_prf_set_key(psa_tls12_prf_key_derivation_t *prf, |
| 6952 | const uint8_t *data, |
| 6953 | size_t data_length) |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6954 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6955 | if (prf->state != PSA_TLS12_PRF_STATE_SEED_SET && |
| 6956 | prf->state != PSA_TLS12_PRF_STATE_OTHER_KEY_SET) { |
| 6957 | return PSA_ERROR_BAD_STATE; |
| 6958 | } |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6959 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6960 | if (data_length != 0) { |
| 6961 | prf->secret = mbedtls_calloc(1, data_length); |
| 6962 | if (prf->secret == NULL) { |
| 6963 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6964 | } |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 6965 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6966 | memcpy(prf->secret, data, data_length); |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 6967 | prf->secret_length = data_length; |
| 6968 | } |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6969 | |
Gilles Peskine | 43f958b | 2020-12-13 14:55:14 +0100 | [diff] [blame] | 6970 | prf->state = PSA_TLS12_PRF_STATE_KEY_SET; |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6971 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6972 | return PSA_SUCCESS; |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6973 | } |
| 6974 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6975 | static psa_status_t psa_tls12_prf_set_label(psa_tls12_prf_key_derivation_t *prf, |
| 6976 | const uint8_t *data, |
| 6977 | size_t data_length) |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6978 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6979 | if (prf->state != PSA_TLS12_PRF_STATE_KEY_SET) { |
| 6980 | return PSA_ERROR_BAD_STATE; |
| 6981 | } |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6982 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6983 | if (data_length != 0) { |
| 6984 | prf->label = mbedtls_calloc(1, data_length); |
| 6985 | if (prf->label == NULL) { |
| 6986 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6987 | } |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6988 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6989 | memcpy(prf->label, data, data_length); |
Janos Follath | d6dce9f | 2019-07-04 09:11:38 +0100 | [diff] [blame] | 6990 | prf->label_length = data_length; |
| 6991 | } |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6992 | |
Gilles Peskine | 43f958b | 2020-12-13 14:55:14 +0100 | [diff] [blame] | 6993 | prf->state = PSA_TLS12_PRF_STATE_LABEL_SET; |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6994 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6995 | return PSA_SUCCESS; |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6996 | } |
| 6997 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6998 | static psa_status_t psa_tls12_prf_input(psa_tls12_prf_key_derivation_t *prf, |
| 6999 | psa_key_derivation_step_t step, |
| 7000 | const uint8_t *data, |
| 7001 | size_t data_length) |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 7002 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7003 | switch (step) { |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 7004 | case PSA_KEY_DERIVATION_INPUT_SEED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7005 | return psa_tls12_prf_set_seed(prf, data, data_length); |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 7006 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7007 | return psa_tls12_prf_set_key(prf, data, data_length); |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 7008 | case PSA_KEY_DERIVATION_INPUT_LABEL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7009 | return psa_tls12_prf_set_label(prf, data, data_length); |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 7010 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7011 | return PSA_ERROR_INVALID_ARGUMENT; |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 7012 | } |
| 7013 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7014 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || |
| 7015 | * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
| 7016 | |
| 7017 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
| 7018 | static psa_status_t psa_tls12_prf_psk_to_ms_set_key( |
| 7019 | psa_tls12_prf_key_derivation_t *prf, |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7020 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7021 | size_t data_length) |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7022 | { |
| 7023 | psa_status_t status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7024 | const size_t pms_len = (prf->state == PSA_TLS12_PRF_STATE_OTHER_KEY_SET ? |
| 7025 | 4 + data_length + prf->other_secret_length : |
| 7026 | 4 + 2 * data_length); |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7027 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7028 | if (data_length > PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE) { |
| 7029 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7030 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7031 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7032 | uint8_t *pms = mbedtls_calloc(1, pms_len); |
| 7033 | if (pms == NULL) { |
| 7034 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 7035 | } |
Przemek Stekiel | c8fa5a1 | 2022-04-07 14:17:13 +0200 | [diff] [blame] | 7036 | uint8_t *cur = pms; |
| 7037 | |
| 7038 | /* pure-PSK: |
| 7039 | * Quoting RFC 4279, Section 2: |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7040 | * |
| 7041 | * The premaster secret is formed as follows: if the PSK is N octets |
| 7042 | * long, concatenate a uint16 with the value N, N zero octets, a second |
| 7043 | * uint16 with the value N, and the PSK itself. |
Przemek Stekiel | c8fa5a1 | 2022-04-07 14:17:13 +0200 | [diff] [blame] | 7044 | * |
| 7045 | * mixed-PSK: |
| 7046 | * In a DHE-PSK, RSA-PSK, ECDHE-PSK the premaster secret is formed as |
| 7047 | * follows: concatenate a uint16 with the length of the other secret, |
| 7048 | * the other secret itself, uint16 with the length of PSK, and the |
| 7049 | * PSK itself. |
| 7050 | * For details please check: |
| 7051 | * - RFC 4279, Section 4 for the definition of RSA-PSK, |
| 7052 | * - RFC 4279, Section 3 for the definition of DHE-PSK, |
| 7053 | * - RFC 5489 for the definition of ECDHE-PSK. |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7054 | */ |
| 7055 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7056 | if (prf->state == PSA_TLS12_PRF_STATE_OTHER_KEY_SET) { |
| 7057 | *cur++ = MBEDTLS_BYTE_1(prf->other_secret_length); |
| 7058 | *cur++ = MBEDTLS_BYTE_0(prf->other_secret_length); |
| 7059 | if (prf->other_secret_length != 0) { |
| 7060 | memcpy(cur, prf->other_secret, prf->other_secret_length); |
| 7061 | mbedtls_platform_zeroize(prf->other_secret, prf->other_secret_length); |
Przemek Stekiel | 2503f7e | 2022-04-12 12:08:01 +0200 | [diff] [blame] | 7062 | cur += prf->other_secret_length; |
| 7063 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7064 | } else { |
| 7065 | *cur++ = MBEDTLS_BYTE_1(data_length); |
| 7066 | *cur++ = MBEDTLS_BYTE_0(data_length); |
| 7067 | memset(cur, 0, data_length); |
Przemek Stekiel | c8fa5a1 | 2022-04-07 14:17:13 +0200 | [diff] [blame] | 7068 | cur += data_length; |
| 7069 | } |
| 7070 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7071 | *cur++ = MBEDTLS_BYTE_1(data_length); |
| 7072 | *cur++ = MBEDTLS_BYTE_0(data_length); |
| 7073 | memcpy(cur, data, data_length); |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7074 | cur += data_length; |
| 7075 | |
Dave Rodgman | e4a6f5a | 2023-11-04 12:20:09 +0000 | [diff] [blame] | 7076 | status = psa_tls12_prf_set_key(prf, pms, (size_t) (cur - pms)); |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7077 | |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 7078 | mbedtls_zeroize_and_free(pms, pms_len); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7079 | return status; |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7080 | } |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 7081 | |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7082 | static psa_status_t psa_tls12_prf_psk_to_ms_set_other_key( |
| 7083 | psa_tls12_prf_key_derivation_t *prf, |
| 7084 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7085 | size_t data_length) |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7086 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7087 | if (prf->state != PSA_TLS12_PRF_STATE_SEED_SET) { |
| 7088 | return PSA_ERROR_BAD_STATE; |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7089 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7090 | |
| 7091 | if (data_length != 0) { |
| 7092 | prf->other_secret = mbedtls_calloc(1, data_length); |
| 7093 | if (prf->other_secret == NULL) { |
| 7094 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 7095 | } |
| 7096 | |
| 7097 | memcpy(prf->other_secret, data, data_length); |
| 7098 | prf->other_secret_length = data_length; |
| 7099 | } else { |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7100 | prf->other_secret_length = 0; |
| 7101 | } |
| 7102 | |
| 7103 | prf->state = PSA_TLS12_PRF_STATE_OTHER_KEY_SET; |
| 7104 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7105 | return PSA_SUCCESS; |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7106 | } |
| 7107 | |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 7108 | static psa_status_t psa_tls12_prf_psk_to_ms_input( |
| 7109 | psa_tls12_prf_key_derivation_t *prf, |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 7110 | psa_key_derivation_step_t step, |
| 7111 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7112 | size_t data_length) |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 7113 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7114 | switch (step) { |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7115 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7116 | return psa_tls12_prf_psk_to_ms_set_key(prf, |
| 7117 | data, data_length); |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7118 | break; |
| 7119 | case PSA_KEY_DERIVATION_INPUT_OTHER_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7120 | return psa_tls12_prf_psk_to_ms_set_other_key(prf, |
| 7121 | data, |
| 7122 | data_length); |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7123 | break; |
| 7124 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7125 | return psa_tls12_prf_input(prf, step, data, data_length); |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7126 | break; |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 7127 | |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 7128 | } |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 7129 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7130 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7131 | |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7132 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
| 7133 | static psa_status_t psa_tls12_ecjpake_to_pms_input( |
| 7134 | psa_tls12_ecjpake_to_pms_t *ecjpake, |
Andrzej Kurek | 702776f | 2022-09-16 06:22:44 -0400 | [diff] [blame] | 7135 | psa_key_derivation_step_t step, |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7136 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7137 | size_t data_length) |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7138 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7139 | if (data_length != PSA_TLS12_ECJPAKE_TO_PMS_INPUT_SIZE || |
| 7140 | step != PSA_KEY_DERIVATION_INPUT_SECRET) { |
| 7141 | return PSA_ERROR_INVALID_ARGUMENT; |
Andrzej Kurek | 5603efd | 2022-09-26 10:49:16 -0400 | [diff] [blame] | 7142 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7143 | |
| 7144 | /* Check if the passed point is in an uncompressed form */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7145 | if (data[0] != 0x04) { |
| 7146 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7147 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7148 | |
| 7149 | /* Only K.X has to be extracted - bytes 1 to 32 inclusive. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7150 | memcpy(ecjpake->data, data + 1, PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE); |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7151 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7152 | return PSA_SUCCESS; |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7153 | } |
| 7154 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */ |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 7155 | |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 7156 | #if defined(PSA_HAVE_SOFT_PBKDF2) |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 7157 | static psa_status_t psa_pbkdf2_set_input_cost( |
| 7158 | psa_pbkdf2_key_derivation_t *pbkdf2, |
| 7159 | psa_key_derivation_step_t step, |
| 7160 | uint64_t data) |
| 7161 | { |
| 7162 | if (step != PSA_KEY_DERIVATION_INPUT_COST) { |
| 7163 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7164 | } |
| 7165 | |
| 7166 | if (pbkdf2->state != PSA_PBKDF2_STATE_INIT) { |
| 7167 | return PSA_ERROR_BAD_STATE; |
| 7168 | } |
Kusumit Ghoderao | 3fc4ca7 | 2023-05-08 15:57:41 +0530 | [diff] [blame] | 7169 | |
Kusumit Ghoderao | e66a8ad | 2023-05-24 12:30:43 +0530 | [diff] [blame] | 7170 | if (data > PSA_VENDOR_PBKDF2_MAX_ITERATIONS) { |
Kusumit Ghoderao | 3fc4ca7 | 2023-05-08 15:57:41 +0530 | [diff] [blame] | 7171 | return PSA_ERROR_NOT_SUPPORTED; |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 7172 | } |
Kusumit Ghoderao | 3fc4ca7 | 2023-05-08 15:57:41 +0530 | [diff] [blame] | 7173 | |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 7174 | if (data == 0) { |
| 7175 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7176 | } |
Kusumit Ghoderao | e66a8ad | 2023-05-24 12:30:43 +0530 | [diff] [blame] | 7177 | |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 7178 | pbkdf2->input_cost = data; |
| 7179 | pbkdf2->state = PSA_PBKDF2_STATE_INPUT_COST_SET; |
| 7180 | |
| 7181 | return PSA_SUCCESS; |
| 7182 | } |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 7183 | |
| 7184 | static psa_status_t psa_pbkdf2_set_salt(psa_pbkdf2_key_derivation_t *pbkdf2, |
| 7185 | const uint8_t *data, |
| 7186 | size_t data_length) |
| 7187 | { |
Gilles Peskine | ead1766 | 2023-08-20 22:02:51 +0200 | [diff] [blame] | 7188 | if (pbkdf2->state == PSA_PBKDF2_STATE_INPUT_COST_SET) { |
| 7189 | pbkdf2->state = PSA_PBKDF2_STATE_SALT_SET; |
| 7190 | } else if (pbkdf2->state == PSA_PBKDF2_STATE_SALT_SET) { |
| 7191 | /* Appending to existing salt. No state change. */ |
| 7192 | } else { |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 7193 | return PSA_ERROR_BAD_STATE; |
| 7194 | } |
| 7195 | |
Gilles Peskine | ca57d78 | 2023-07-20 19:08:06 +0200 | [diff] [blame] | 7196 | if (data_length == 0) { |
Gilles Peskine | ead1766 | 2023-08-20 22:02:51 +0200 | [diff] [blame] | 7197 | /* Appending an empty string, nothing to do. */ |
| 7198 | } else { |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 7199 | uint8_t *next_salt; |
Kusumit Ghoderao | b538bb7 | 2023-05-24 12:32:14 +0530 | [diff] [blame] | 7200 | |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 7201 | next_salt = mbedtls_calloc(1, data_length + pbkdf2->salt_length); |
| 7202 | if (next_salt == NULL) { |
Kusumit Ghoderao | d0422f3 | 2023-05-08 15:56:19 +0530 | [diff] [blame] | 7203 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 7204 | } |
| 7205 | |
Gilles Peskine | ead1766 | 2023-08-20 22:02:51 +0200 | [diff] [blame] | 7206 | if (pbkdf2->salt_length != 0) { |
| 7207 | memcpy(next_salt, pbkdf2->salt, pbkdf2->salt_length); |
| 7208 | } |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 7209 | memcpy(next_salt + pbkdf2->salt_length, data, data_length); |
Kusumit Ghoderao | d0422f3 | 2023-05-08 15:56:19 +0530 | [diff] [blame] | 7210 | pbkdf2->salt_length += data_length; |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 7211 | mbedtls_free(pbkdf2->salt); |
| 7212 | pbkdf2->salt = next_salt; |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 7213 | } |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 7214 | return PSA_SUCCESS; |
| 7215 | } |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 7216 | |
Kusumit Ghoderao | 0bca4c5 | 2023-07-27 21:20:14 +0530 | [diff] [blame] | 7217 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7218 | static psa_status_t psa_pbkdf2_hmac_set_password(psa_algorithm_t hash_alg, |
Kusumit Ghoderao | aac9a58 | 2023-05-24 14:19:17 +0530 | [diff] [blame] | 7219 | const uint8_t *input, |
| 7220 | size_t input_len, |
| 7221 | uint8_t *output, |
Kusumit Ghoderao | 91f99f5 | 2023-05-24 22:21:48 +0530 | [diff] [blame] | 7222 | size_t *output_len) |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7223 | { |
| 7224 | psa_status_t status = PSA_SUCCESS; |
| 7225 | if (input_len > PSA_HASH_BLOCK_LENGTH(hash_alg)) { |
Ryan Everett | 5d2e82f | 2024-02-07 17:24:59 +0000 | [diff] [blame] | 7226 | return psa_hash_compute(hash_alg, input, input_len, output, |
| 7227 | PSA_HMAC_MAX_HASH_BLOCK_SIZE, output_len); |
| 7228 | } else if (input_len > 0) { |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7229 | memcpy(output, input, input_len); |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7230 | } |
Ryan Everett | 5d2e82f | 2024-02-07 17:24:59 +0000 | [diff] [blame] | 7231 | *output_len = PSA_HASH_BLOCK_LENGTH(hash_alg); |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7232 | return status; |
| 7233 | } |
Kusumit Ghoderao | 0bca4c5 | 2023-07-27 21:20:14 +0530 | [diff] [blame] | 7234 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */ |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7235 | |
Kusumit Ghoderao | 0bca4c5 | 2023-07-27 21:20:14 +0530 | [diff] [blame] | 7236 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_AES_CMAC_PRF_128) |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7237 | static psa_status_t psa_pbkdf2_cmac_set_password(const uint8_t *input, |
| 7238 | size_t input_len, |
| 7239 | uint8_t *output, |
| 7240 | size_t *output_len) |
| 7241 | { |
| 7242 | psa_status_t status = PSA_SUCCESS; |
Kusumit Ghoderao | a12e2d5 | 2023-07-27 21:18:30 +0530 | [diff] [blame] | 7243 | if (input_len != PSA_MAC_LENGTH(PSA_KEY_TYPE_AES, 128U, PSA_ALG_CMAC)) { |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7244 | psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
Kusumit Ghoderao | 3fde8fe | 2023-06-27 10:41:43 +0530 | [diff] [blame] | 7245 | uint8_t zeros[16] = { 0 }; |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7246 | psa_set_key_type(&attributes, PSA_KEY_TYPE_AES); |
| 7247 | psa_set_key_bits(&attributes, PSA_BYTES_TO_BITS(sizeof(zeros))); |
| 7248 | psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_SIGN_MESSAGE); |
Kusumit Ghoderao | a12e2d5 | 2023-07-27 21:18:30 +0530 | [diff] [blame] | 7249 | /* Passing PSA_MAC_LENGTH(PSA_KEY_TYPE_AES, 128U, PSA_ALG_CMAC) as |
Kusumit Ghoderao | 5f3345a | 2023-07-27 21:21:38 +0530 | [diff] [blame] | 7250 | * mac_size as the driver function sets mac_output_length = mac_size |
| 7251 | * on success. See https://github.com/Mbed-TLS/mbedtls/issues/7801 */ |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7252 | status = psa_driver_wrapper_mac_compute(&attributes, |
| 7253 | zeros, sizeof(zeros), |
| 7254 | PSA_ALG_CMAC, input, input_len, |
| 7255 | output, |
Kusumit Ghoderao | a12e2d5 | 2023-07-27 21:18:30 +0530 | [diff] [blame] | 7256 | PSA_MAC_LENGTH(PSA_KEY_TYPE_AES, |
| 7257 | 128U, |
| 7258 | PSA_ALG_CMAC), |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7259 | output_len); |
| 7260 | } else { |
| 7261 | memcpy(output, input, input_len); |
Kusumit Ghoderao | a12e2d5 | 2023-07-27 21:18:30 +0530 | [diff] [blame] | 7262 | *output_len = PSA_MAC_LENGTH(PSA_KEY_TYPE_AES, 128U, PSA_ALG_CMAC); |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7263 | } |
| 7264 | return status; |
| 7265 | } |
Kusumit Ghoderao | 0bca4c5 | 2023-07-27 21:20:14 +0530 | [diff] [blame] | 7266 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_AES_CMAC_PRF_128 */ |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 7267 | |
| 7268 | static psa_status_t psa_pbkdf2_set_password(psa_pbkdf2_key_derivation_t *pbkdf2, |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7269 | psa_algorithm_t kdf_alg, |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 7270 | const uint8_t *data, |
| 7271 | size_t data_length) |
| 7272 | { |
Kusumit Ghoderao | aac9a58 | 2023-05-24 14:19:17 +0530 | [diff] [blame] | 7273 | psa_status_t status = PSA_SUCCESS; |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 7274 | if (pbkdf2->state != PSA_PBKDF2_STATE_SALT_SET) { |
| 7275 | return PSA_ERROR_BAD_STATE; |
| 7276 | } |
| 7277 | |
Kusumit Ghoderao | f3e696d | 2023-07-28 13:30:50 +0530 | [diff] [blame] | 7278 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7279 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 7280 | psa_algorithm_t hash_alg = PSA_ALG_PBKDF2_HMAC_GET_HASH(kdf_alg); |
| 7281 | status = psa_pbkdf2_hmac_set_password(hash_alg, data, data_length, |
| 7282 | pbkdf2->password, |
| 7283 | &pbkdf2->password_length); |
Kusumit Ghoderao | f3e696d | 2023-07-28 13:30:50 +0530 | [diff] [blame] | 7284 | } else |
| 7285 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */ |
| 7286 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_AES_CMAC_PRF_128) |
| 7287 | if (kdf_alg == PSA_ALG_PBKDF2_AES_CMAC_PRF_128) { |
Kusumit Ghoderao | 3d5edb8 | 2023-06-22 15:41:25 +0530 | [diff] [blame] | 7288 | status = psa_pbkdf2_cmac_set_password(data, data_length, |
| 7289 | pbkdf2->password, |
| 7290 | &pbkdf2->password_length); |
Kusumit Ghoderao | f3e696d | 2023-07-28 13:30:50 +0530 | [diff] [blame] | 7291 | } else |
| 7292 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_AES_CMAC_PRF_128 */ |
| 7293 | { |
| 7294 | return PSA_ERROR_INVALID_ARGUMENT; |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 7295 | } |
| 7296 | |
| 7297 | pbkdf2->state = PSA_PBKDF2_STATE_PASSWORD_SET; |
| 7298 | |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7299 | return status; |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 7300 | } |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 7301 | |
| 7302 | static psa_status_t psa_pbkdf2_input(psa_pbkdf2_key_derivation_t *pbkdf2, |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7303 | psa_algorithm_t kdf_alg, |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 7304 | psa_key_derivation_step_t step, |
| 7305 | const uint8_t *data, |
| 7306 | size_t data_length) |
| 7307 | { |
| 7308 | switch (step) { |
| 7309 | case PSA_KEY_DERIVATION_INPUT_SALT: |
| 7310 | return psa_pbkdf2_set_salt(pbkdf2, data, data_length); |
| 7311 | case PSA_KEY_DERIVATION_INPUT_PASSWORD: |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7312 | return psa_pbkdf2_set_password(pbkdf2, kdf_alg, data, data_length); |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 7313 | default: |
| 7314 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7315 | } |
| 7316 | } |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 7317 | #endif /* PSA_HAVE_SOFT_PBKDF2 */ |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 7318 | |
Gilles Peskine | b896519 | 2019-09-24 16:21:10 +0200 | [diff] [blame] | 7319 | /** Check whether the given key type is acceptable for the given |
| 7320 | * input step of a key derivation. |
| 7321 | * |
| 7322 | * Secret inputs must have the type #PSA_KEY_TYPE_DERIVE. |
| 7323 | * Non-secret inputs must have the type #PSA_KEY_TYPE_RAW_DATA. |
| 7324 | * Both secret and non-secret inputs can alternatively have the type |
| 7325 | * #PSA_KEY_TYPE_NONE, which is never the type of a key object, meaning |
| 7326 | * that the input was passed as a buffer rather than via a key object. |
| 7327 | */ |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7328 | static int psa_key_derivation_check_input_type( |
| 7329 | psa_key_derivation_step_t step, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7330 | psa_key_type_t key_type) |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7331 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7332 | switch (step) { |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7333 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7334 | if (key_type == PSA_KEY_TYPE_DERIVE) { |
| 7335 | return PSA_SUCCESS; |
| 7336 | } |
| 7337 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 7338 | return PSA_SUCCESS; |
| 7339 | } |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7340 | break; |
Przemek Stekiel | a7695a2 | 2022-04-07 15:39:01 +0200 | [diff] [blame] | 7341 | case PSA_KEY_DERIVATION_INPUT_OTHER_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7342 | if (key_type == PSA_KEY_TYPE_DERIVE) { |
| 7343 | return PSA_SUCCESS; |
| 7344 | } |
| 7345 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 7346 | return PSA_SUCCESS; |
| 7347 | } |
Przemek Stekiel | a7695a2 | 2022-04-07 15:39:01 +0200 | [diff] [blame] | 7348 | break; |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7349 | case PSA_KEY_DERIVATION_INPUT_LABEL: |
| 7350 | case PSA_KEY_DERIVATION_INPUT_SALT: |
| 7351 | case PSA_KEY_DERIVATION_INPUT_INFO: |
| 7352 | case PSA_KEY_DERIVATION_INPUT_SEED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7353 | if (key_type == PSA_KEY_TYPE_RAW_DATA) { |
| 7354 | return PSA_SUCCESS; |
| 7355 | } |
| 7356 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 7357 | return PSA_SUCCESS; |
| 7358 | } |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7359 | break; |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 7360 | case PSA_KEY_DERIVATION_INPUT_PASSWORD: |
| 7361 | if (key_type == PSA_KEY_TYPE_PASSWORD) { |
| 7362 | return PSA_SUCCESS; |
| 7363 | } |
| 7364 | if (key_type == PSA_KEY_TYPE_DERIVE) { |
| 7365 | return PSA_SUCCESS; |
| 7366 | } |
| 7367 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 7368 | return PSA_SUCCESS; |
| 7369 | } |
| 7370 | break; |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7371 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7372 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7373 | } |
| 7374 | |
Janos Follath | b80a94e | 2019-06-12 15:54:46 +0100 | [diff] [blame] | 7375 | static psa_status_t psa_key_derivation_input_internal( |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 7376 | psa_key_derivation_operation_t *operation, |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 7377 | psa_key_derivation_step_t step, |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7378 | psa_key_type_t key_type, |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 7379 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7380 | size_t data_length) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7381 | { |
Gilles Peskine | 46d7faf | 2019-09-23 19:22:55 +0200 | [diff] [blame] | 7382 | psa_status_t status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7383 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
Gilles Peskine | 46d7faf | 2019-09-23 19:22:55 +0200 | [diff] [blame] | 7384 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7385 | status = psa_key_derivation_check_input_type(step, key_type); |
| 7386 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7387 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7388 | } |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7389 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 7390 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7391 | if (PSA_ALG_IS_ANY_HKDF(kdf_alg)) { |
| 7392 | status = psa_hkdf_input(&operation->ctx.hkdf, kdf_alg, |
| 7393 | step, data, data_length); |
| 7394 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 7395 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7396 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7397 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg)) { |
| 7398 | status = psa_tls12_prf_input(&operation->ctx.tls12_prf, |
| 7399 | step, data, data_length); |
| 7400 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7401 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF */ |
| 7402 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7403 | if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 7404 | status = psa_tls12_prf_psk_to_ms_input(&operation->ctx.tls12_prf, |
| 7405 | step, data, data_length); |
| 7406 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 7407 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7408 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7409 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7410 | status = psa_tls12_ecjpake_to_pms_input( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7411 | &operation->ctx.tls12_ecjpake_to_pms, step, data, data_length); |
| 7412 | } else |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 7413 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */ |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 7414 | #if defined(PSA_HAVE_SOFT_PBKDF2) |
Kusumit Ghoderao | 9ab03c3 | 2023-07-27 21:14:05 +0530 | [diff] [blame] | 7415 | if (PSA_ALG_IS_PBKDF2(kdf_alg)) { |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 7416 | status = psa_pbkdf2_input(&operation->ctx.pbkdf2, kdf_alg, |
| 7417 | step, data, data_length); |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 7418 | } else |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 7419 | #endif /* PSA_HAVE_SOFT_PBKDF2 */ |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7420 | { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 7421 | /* This can't happen unless the operation object was not initialized */ |
Steven Cooreman | 74afe47 | 2021-02-10 17:19:22 +0100 | [diff] [blame] | 7422 | (void) data; |
| 7423 | (void) data_length; |
| 7424 | (void) kdf_alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7425 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7426 | } |
| 7427 | |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7428 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7429 | if (status != PSA_SUCCESS) { |
| 7430 | psa_key_derivation_abort(operation); |
| 7431 | } |
| 7432 | return status; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7433 | } |
| 7434 | |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 7435 | static psa_status_t psa_key_derivation_input_integer_internal( |
| 7436 | psa_key_derivation_operation_t *operation, |
| 7437 | psa_key_derivation_step_t step, |
| 7438 | uint64_t value) |
| 7439 | { |
| 7440 | psa_status_t status; |
| 7441 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
| 7442 | |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 7443 | #if defined(PSA_HAVE_SOFT_PBKDF2) |
Kusumit Ghoderao | 9ab03c3 | 2023-07-27 21:14:05 +0530 | [diff] [blame] | 7444 | if (PSA_ALG_IS_PBKDF2(kdf_alg)) { |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 7445 | status = psa_pbkdf2_set_input_cost( |
| 7446 | &operation->ctx.pbkdf2, step, value); |
| 7447 | } else |
Kusumit Ghoderao | 2addf35 | 2023-07-27 21:09:26 +0530 | [diff] [blame] | 7448 | #endif /* PSA_HAVE_SOFT_PBKDF2 */ |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 7449 | { |
Kusumit Ghoderao | 3a18dee | 2023-04-07 16:16:27 +0530 | [diff] [blame] | 7450 | (void) step; |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 7451 | (void) value; |
| 7452 | (void) kdf_alg; |
Kusumit Ghoderao | a14ae5a | 2023-04-19 14:16:26 +0530 | [diff] [blame] | 7453 | status = PSA_ERROR_INVALID_ARGUMENT; |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 7454 | } |
| 7455 | |
| 7456 | if (status != PSA_SUCCESS) { |
| 7457 | psa_key_derivation_abort(operation); |
| 7458 | } |
| 7459 | return status; |
| 7460 | } |
| 7461 | |
Janos Follath | 51f4a0f | 2019-06-14 11:35:55 +0100 | [diff] [blame] | 7462 | psa_status_t psa_key_derivation_input_bytes( |
| 7463 | psa_key_derivation_operation_t *operation, |
| 7464 | psa_key_derivation_step_t step, |
Ryan Everett | d1e398c | 2024-01-19 14:46:00 +0000 | [diff] [blame] | 7465 | const uint8_t *data_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7466 | size_t data_length) |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 7467 | { |
Ryan Everett | d1e398c | 2024-01-19 14:46:00 +0000 | [diff] [blame] | 7468 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 7469 | LOCAL_INPUT_DECLARE(data_external, data); |
| 7470 | |
| 7471 | LOCAL_INPUT_ALLOC(data_external, data_length, data); |
| 7472 | |
| 7473 | status = psa_key_derivation_input_internal(operation, step, |
| 7474 | PSA_KEY_TYPE_NONE, |
| 7475 | data, data_length); |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 7476 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Ryan Everett | d1e398c | 2024-01-19 14:46:00 +0000 | [diff] [blame] | 7477 | exit: |
Ryan Everett | b41c3c9 | 2024-01-25 11:56:35 +0000 | [diff] [blame] | 7478 | #endif |
Ryan Everett | d1e398c | 2024-01-19 14:46:00 +0000 | [diff] [blame] | 7479 | LOCAL_INPUT_FREE(data_external, data); |
| 7480 | return status; |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 7481 | } |
| 7482 | |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 7483 | psa_status_t psa_key_derivation_input_integer( |
| 7484 | psa_key_derivation_operation_t *operation, |
| 7485 | psa_key_derivation_step_t step, |
| 7486 | uint64_t value) |
| 7487 | { |
| 7488 | return psa_key_derivation_input_integer_internal(operation, step, value); |
| 7489 | } |
| 7490 | |
Janos Follath | 51f4a0f | 2019-06-14 11:35:55 +0100 | [diff] [blame] | 7491 | psa_status_t psa_key_derivation_input_key( |
| 7492 | psa_key_derivation_operation_t *operation, |
| 7493 | psa_key_derivation_step_t step, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7494 | mbedtls_svc_key_id_t key) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7495 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7496 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7497 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7498 | psa_key_slot_t *slot; |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 7499 | |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7500 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7501 | key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg); |
| 7502 | if (status != PSA_SUCCESS) { |
| 7503 | psa_key_derivation_abort(operation); |
| 7504 | return status; |
Gilles Peskine | 593773d | 2019-09-23 18:17:40 +0200 | [diff] [blame] | 7505 | } |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 7506 | |
Kusumit Ghoderao | 3128c5d | 2023-05-03 12:27:57 +0530 | [diff] [blame] | 7507 | /* Passing a key object as a SECRET or PASSWORD input unlocks the |
| 7508 | * permission to output to a key object. */ |
| 7509 | if (step == PSA_KEY_DERIVATION_INPUT_SECRET || |
| 7510 | step == PSA_KEY_DERIVATION_INPUT_PASSWORD) { |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 7511 | operation->can_output_key = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7512 | } |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 7513 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7514 | status = psa_key_derivation_input_internal(operation, |
| 7515 | step, slot->attr.type, |
| 7516 | slot->key.data, |
| 7517 | slot->key.bytes); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7518 | |
Ryan Everett | 5ac6fa7 | 2024-02-14 17:11:36 +0000 | [diff] [blame] | 7519 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7520 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7521 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 7522 | } |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 7523 | |
| 7524 | |
| 7525 | |
| 7526 | /****************************************************************/ |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7527 | /* Key agreement */ |
| 7528 | /****************************************************************/ |
| 7529 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7530 | psa_status_t psa_key_agreement_raw_builtin(const psa_key_attributes_t *attributes, |
| 7531 | const uint8_t *key_buffer, |
| 7532 | size_t key_buffer_size, |
| 7533 | psa_algorithm_t alg, |
| 7534 | const uint8_t *peer_key, |
| 7535 | size_t peer_key_length, |
| 7536 | uint8_t *shared_secret, |
| 7537 | size_t shared_secret_size, |
| 7538 | size_t *shared_secret_length) |
Gilles Peskine | b7ecdf0 | 2018-09-18 12:11:27 +0200 | [diff] [blame] | 7539 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7540 | switch (alg) { |
John Durkop | 6ba40d1 | 2020-11-10 08:50:04 -0800 | [diff] [blame] | 7541 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH) |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7542 | case PSA_ALG_ECDH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7543 | return mbedtls_psa_key_agreement_ecdh(attributes, key_buffer, |
| 7544 | key_buffer_size, alg, |
| 7545 | peer_key, peer_key_length, |
| 7546 | shared_secret, |
| 7547 | shared_secret_size, |
| 7548 | shared_secret_length); |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7549 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_ECDH */ |
Przemek Stekiel | fb3dd54 | 2022-12-01 14:59:15 +0100 | [diff] [blame] | 7550 | |
| 7551 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_FFDH) |
| 7552 | case PSA_ALG_FFDH: |
Przemek Stekiel | 152bb46 | 2023-06-01 11:52:39 +0200 | [diff] [blame] | 7553 | return mbedtls_psa_ffdh_key_agreement(attributes, |
Przemek Stekiel | 359f462 | 2022-12-05 14:11:55 +0100 | [diff] [blame] | 7554 | peer_key, |
| 7555 | peer_key_length, |
| 7556 | key_buffer, |
| 7557 | key_buffer_size, |
| 7558 | shared_secret, |
| 7559 | shared_secret_size, |
| 7560 | shared_secret_length); |
Przemek Stekiel | fb3dd54 | 2022-12-01 14:59:15 +0100 | [diff] [blame] | 7561 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_FFDH */ |
| 7562 | |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7563 | default: |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7564 | (void) attributes; |
| 7565 | (void) key_buffer; |
| 7566 | (void) key_buffer_size; |
Gilles Peskine | 93f8500 | 2018-11-16 16:43:31 +0100 | [diff] [blame] | 7567 | (void) peer_key; |
| 7568 | (void) peer_key_length; |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7569 | (void) shared_secret; |
| 7570 | (void) shared_secret_size; |
| 7571 | (void) shared_secret_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7572 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7573 | } |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7574 | } |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7575 | |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7576 | /** Internal function for raw key agreement |
| 7577 | * Calls the driver wrapper which will hand off key agreement task |
Aditya Deshpande | 40c05cc | 2022-10-14 16:41:40 +0100 | [diff] [blame] | 7578 | * to the driver's implementation if a driver is present. |
| 7579 | * Fallback specified in the driver wrapper is built-in raw key agreement |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7580 | * (psa_key_agreement_raw_builtin). |
| 7581 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7582 | static psa_status_t psa_key_agreement_raw_internal(psa_algorithm_t alg, |
| 7583 | psa_key_slot_t *private_key, |
| 7584 | const uint8_t *peer_key, |
| 7585 | size_t peer_key_length, |
| 7586 | uint8_t *shared_secret, |
| 7587 | size_t shared_secret_size, |
| 7588 | size_t *shared_secret_length) |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 7589 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7590 | if (!PSA_ALG_IS_RAW_KEY_AGREEMENT(alg)) { |
| 7591 | return PSA_ERROR_NOT_SUPPORTED; |
| 7592 | } |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7593 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 7594 | return psa_driver_wrapper_key_agreement(&private_key->attr, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7595 | private_key->key.data, |
| 7596 | private_key->key.bytes, alg, |
| 7597 | peer_key, peer_key_length, |
| 7598 | shared_secret, |
| 7599 | shared_secret_size, |
| 7600 | shared_secret_length); |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7601 | } |
| 7602 | |
Gilles Peskine | a99d3fb | 2019-05-16 15:28:51 +0200 | [diff] [blame] | 7603 | /* Note that if this function fails, you must call psa_key_derivation_abort() |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7604 | * to potentially free embedded data structures and wipe confidential data. |
| 7605 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7606 | static psa_status_t psa_key_agreement_internal(psa_key_derivation_operation_t *operation, |
| 7607 | psa_key_derivation_step_t step, |
| 7608 | psa_key_slot_t *private_key, |
| 7609 | const uint8_t *peer_key, |
| 7610 | size_t peer_key_length) |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7611 | { |
| 7612 | psa_status_t status; |
Moritz Fischer | 967f8cd | 2024-03-02 00:55:06 +0000 | [diff] [blame] | 7613 | uint8_t shared_secret[PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE] = { 0 }; |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7614 | size_t shared_secret_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7615 | psa_algorithm_t ka_alg = PSA_ALG_KEY_AGREEMENT_GET_BASE(operation->alg); |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7616 | |
| 7617 | /* Step 1: run the secret agreement algorithm to generate the shared |
| 7618 | * secret. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7619 | status = psa_key_agreement_raw_internal(ka_alg, |
| 7620 | private_key, |
| 7621 | peer_key, peer_key_length, |
| 7622 | shared_secret, |
| 7623 | sizeof(shared_secret), |
| 7624 | &shared_secret_length); |
| 7625 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7626 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7627 | } |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7628 | |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 7629 | /* Step 2: set up the key derivation to generate key material from |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7630 | * the shared secret. A shared secret is permitted wherever a key |
| 7631 | * of type DERIVE is permitted. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7632 | status = psa_key_derivation_input_internal(operation, step, |
| 7633 | PSA_KEY_TYPE_DERIVE, |
| 7634 | shared_secret, |
| 7635 | shared_secret_length); |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7636 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7637 | mbedtls_platform_zeroize(shared_secret, shared_secret_length); |
| 7638 | return status; |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7639 | } |
| 7640 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7641 | psa_status_t psa_key_derivation_key_agreement(psa_key_derivation_operation_t *operation, |
| 7642 | psa_key_derivation_step_t step, |
| 7643 | mbedtls_svc_key_id_t private_key, |
Thomas Daubney | 9739ac0 | 2024-02-15 13:15:47 +0000 | [diff] [blame] | 7644 | const uint8_t *peer_key_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7645 | size_t peer_key_length) |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7646 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7647 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7648 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 7649 | psa_key_slot_t *slot; |
Thomas Daubney | 9739ac0 | 2024-02-15 13:15:47 +0000 | [diff] [blame] | 7650 | LOCAL_INPUT_DECLARE(peer_key_external, peer_key); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7651 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7652 | if (!PSA_ALG_IS_KEY_AGREEMENT(operation->alg)) { |
| 7653 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7654 | } |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7655 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7656 | private_key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg); |
| 7657 | if (status != PSA_SUCCESS) { |
| 7658 | return status; |
| 7659 | } |
Thomas Daubney | 9739ac0 | 2024-02-15 13:15:47 +0000 | [diff] [blame] | 7660 | |
Thomas Daubney | 692fb3c | 2024-03-12 16:20:41 +0000 | [diff] [blame] | 7661 | LOCAL_INPUT_ALLOC(peer_key_external, peer_key_length, peer_key); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7662 | status = psa_key_agreement_internal(operation, step, |
| 7663 | slot, |
| 7664 | peer_key, peer_key_length); |
Thomas Daubney | 9739ac0 | 2024-02-15 13:15:47 +0000 | [diff] [blame] | 7665 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 7666 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
Thomas Daubney | 9739ac0 | 2024-02-15 13:15:47 +0000 | [diff] [blame] | 7667 | exit: |
Thomas Daubney | 50f58fc | 2024-02-15 14:24:03 +0000 | [diff] [blame] | 7668 | #endif |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7669 | if (status != PSA_SUCCESS) { |
| 7670 | psa_key_derivation_abort(operation); |
| 7671 | } else { |
Steven Cooreman | fa5e631 | 2020-10-15 17:07:12 +0200 | [diff] [blame] | 7672 | /* If a private key has been added as SECRET, we allow the derived |
| 7673 | * key material to be used as a key in PSA Crypto. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7674 | if (step == PSA_KEY_DERIVATION_INPUT_SECRET) { |
Steven Cooreman | fa5e631 | 2020-10-15 17:07:12 +0200 | [diff] [blame] | 7675 | operation->can_output_key = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7676 | } |
Steven Cooreman | fa5e631 | 2020-10-15 17:07:12 +0200 | [diff] [blame] | 7677 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7678 | |
Ryan Everett | 5ac6fa7 | 2024-02-14 17:11:36 +0000 | [diff] [blame] | 7679 | unlock_status = psa_unregister_read_under_mutex(slot); |
Thomas Daubney | 9739ac0 | 2024-02-15 13:15:47 +0000 | [diff] [blame] | 7680 | LOCAL_INPUT_FREE(peer_key_external, peer_key); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7681 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7682 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | af3baab | 2018-06-27 22:55:52 +0200 | [diff] [blame] | 7683 | } |
| 7684 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7685 | psa_status_t psa_raw_key_agreement(psa_algorithm_t alg, |
| 7686 | mbedtls_svc_key_id_t private_key, |
Thomas Daubney | 81899ab | 2024-02-15 12:57:26 +0000 | [diff] [blame] | 7687 | const uint8_t *peer_key_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7688 | size_t peer_key_length, |
Thomas Daubney | 81899ab | 2024-02-15 12:57:26 +0000 | [diff] [blame] | 7689 | uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7690 | size_t output_size, |
| 7691 | size_t *output_length) |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7692 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7693 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7694 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7695 | psa_key_slot_t *slot = NULL; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 7696 | size_t expected_length; |
Thomas Daubney | 81899ab | 2024-02-15 12:57:26 +0000 | [diff] [blame] | 7697 | LOCAL_INPUT_DECLARE(peer_key_external, peer_key); |
| 7698 | LOCAL_OUTPUT_DECLARE(output_external, output); |
Thomas Daubney | 89d8c2a | 2024-02-21 11:16:16 +0000 | [diff] [blame] | 7699 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7700 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7701 | if (!PSA_ALG_IS_KEY_AGREEMENT(alg)) { |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7702 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 7703 | goto exit; |
| 7704 | } |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7705 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7706 | private_key, &slot, PSA_KEY_USAGE_DERIVE, alg); |
| 7707 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7708 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7709 | } |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7710 | |
Gilles Peskine | 3e56130 | 2022-04-14 00:17:15 +0200 | [diff] [blame] | 7711 | /* PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() is in general an upper bound |
| 7712 | * for the output size. The PSA specification only guarantees that this |
| 7713 | * function works if output_size >= PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(...), |
| 7714 | * but it might be nice to allow smaller buffers if the output fits. |
| 7715 | * At the time of writing this comment, with only ECDH implemented, |
| 7716 | * PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() is exact so the point is moot. |
| 7717 | * If FFDH is implemented, PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() can easily |
| 7718 | * be exact for it as well. */ |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 7719 | expected_length = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7720 | PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(slot->attr.type, slot->attr.bits); |
| 7721 | if (output_size < expected_length) { |
Gilles Peskine | 3e56130 | 2022-04-14 00:17:15 +0200 | [diff] [blame] | 7722 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 7723 | goto exit; |
| 7724 | } |
| 7725 | |
Thomas Daubney | 81899ab | 2024-02-15 12:57:26 +0000 | [diff] [blame] | 7726 | LOCAL_INPUT_ALLOC(peer_key_external, peer_key_length, peer_key); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7727 | status = psa_key_agreement_raw_internal(alg, slot, |
| 7728 | peer_key, peer_key_length, |
| 7729 | output, output_size, |
| 7730 | output_length); |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7731 | |
| 7732 | exit: |
Thomas Daubney | 5390aca | 2024-02-22 11:06:04 +0000 | [diff] [blame] | 7733 | /* Check for successful allocation of output, |
| 7734 | * with an unsuccessful status. */ |
Thomas Daubney | 0576a6a | 2024-02-21 15:15:00 +0000 | [diff] [blame] | 7735 | if (output != NULL && status != PSA_SUCCESS) { |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7736 | /* If an error happens and is not handled properly, the output |
| 7737 | * may be used as a key to protect sensitive data. Arrange for such |
| 7738 | * a key to be random, which is likely to result in decryption or |
| 7739 | * verification errors. This is better than filling the buffer with |
| 7740 | * some constant data such as zeros, which would result in the data |
| 7741 | * being protected with a reproducible, easily knowable key. |
| 7742 | */ |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 7743 | psa_generate_random_internal(output, output_size); |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7744 | *output_length = output_size; |
| 7745 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7746 | |
Thomas Daubney | 5390aca | 2024-02-22 11:06:04 +0000 | [diff] [blame] | 7747 | if (output == NULL) { |
Thomas Daubney | 89d8c2a | 2024-02-21 11:16:16 +0000 | [diff] [blame] | 7748 | /* output allocation failed. */ |
| 7749 | *output_length = 0; |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7750 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7751 | |
Ryan Everett | a103ec9 | 2024-01-31 13:59:57 +0000 | [diff] [blame] | 7752 | unlock_status = psa_unregister_read_under_mutex(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7753 | |
Thomas Daubney | 81899ab | 2024-02-15 12:57:26 +0000 | [diff] [blame] | 7754 | LOCAL_INPUT_FREE(peer_key_external, peer_key); |
| 7755 | LOCAL_OUTPUT_FREE(output_external, output); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7756 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7757 | } |
Gilles Peskine | 86a440b | 2018-11-12 18:39:40 +0100 | [diff] [blame] | 7758 | |
| 7759 | |
| 7760 | /****************************************************************/ |
| 7761 | /* Random generation */ |
Gilles Peskine | 53d991e | 2018-07-12 01:14:59 +0200 | [diff] [blame] | 7762 | /****************************************************************/ |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7763 | |
Gilles Peskine | 672a771 | 2023-04-28 21:00:28 +0200 | [diff] [blame] | 7764 | #if defined(MBEDTLS_PSA_INJECT_ENTROPY) |
| 7765 | #include "entropy_poll.h" |
| 7766 | #endif |
| 7767 | |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7768 | /** Initialize the PSA random generator. |
Paul Elliott | d35dce6 | 2024-03-15 13:57:16 +0000 | [diff] [blame] | 7769 | * |
| 7770 | * Note: the mbedtls_threading_psa_rngdata_mutex should be held when calling |
| 7771 | * this function if mutexes are enabled. |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7772 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7773 | static void mbedtls_psa_random_init(mbedtls_psa_random_context_t *rng) |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7774 | { |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7775 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7776 | memset(rng, 0, sizeof(*rng)); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7777 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
| 7778 | |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7779 | /* Set default configuration if |
| 7780 | * mbedtls_psa_crypto_configure_entropy_sources() hasn't been called. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7781 | if (rng->entropy_init == NULL) { |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7782 | rng->entropy_init = mbedtls_entropy_init; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7783 | } |
| 7784 | if (rng->entropy_free == NULL) { |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7785 | rng->entropy_free = mbedtls_entropy_free; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7786 | } |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7787 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7788 | rng->entropy_init(&rng->entropy); |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7789 | #if defined(MBEDTLS_PSA_INJECT_ENTROPY) && \ |
| 7790 | defined(MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES) |
| 7791 | /* The PSA entropy injection feature depends on using NV seed as an entropy |
| 7792 | * source. Add NV seed as an entropy source for PSA entropy injection. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7793 | mbedtls_entropy_add_source(&rng->entropy, |
| 7794 | mbedtls_nv_seed_poll, NULL, |
| 7795 | MBEDTLS_ENTROPY_BLOCK_SIZE, |
| 7796 | MBEDTLS_ENTROPY_SOURCE_STRONG); |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7797 | #endif |
| 7798 | |
Valerio Setti | 061d4e4 | 2024-02-26 12:52:44 +0100 | [diff] [blame] | 7799 | mbedtls_psa_drbg_init(&rng->drbg); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7800 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7801 | } |
| 7802 | |
| 7803 | /** Deinitialize the PSA random generator. |
Paul Elliott | d35dce6 | 2024-03-15 13:57:16 +0000 | [diff] [blame] | 7804 | * |
| 7805 | * Note: the mbedtls_threading_psa_rngdata_mutex should be held when calling |
| 7806 | * this function if mutexes are enabled. |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7807 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7808 | static void mbedtls_psa_random_free(mbedtls_psa_random_context_t *rng) |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7809 | { |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7810 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7811 | memset(rng, 0, sizeof(*rng)); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7812 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Valerio Setti | 061d4e4 | 2024-02-26 12:52:44 +0100 | [diff] [blame] | 7813 | mbedtls_psa_drbg_free(&rng->drbg); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7814 | rng->entropy_free(&rng->entropy); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7815 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7816 | } |
| 7817 | |
| 7818 | /** Seed the PSA random generator. |
| 7819 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7820 | static psa_status_t mbedtls_psa_random_seed(mbedtls_psa_random_context_t *rng) |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7821 | { |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7822 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
| 7823 | /* Do nothing: the external RNG seeds itself. */ |
| 7824 | (void) rng; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7825 | return PSA_SUCCESS; |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7826 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7827 | const unsigned char drbg_seed[] = "PSA"; |
Valerio Setti | 061d4e4 | 2024-02-26 12:52:44 +0100 | [diff] [blame] | 7828 | int ret = mbedtls_psa_drbg_seed(&rng->drbg, &rng->entropy, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7829 | drbg_seed, sizeof(drbg_seed) - 1); |
| 7830 | return mbedtls_to_psa_error(ret); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7831 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7832 | } |
| 7833 | |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 7834 | psa_status_t psa_generate_random(uint8_t *output_external, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7835 | size_t output_size) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7836 | { |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 7837 | psa_status_t status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7838 | |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 7839 | LOCAL_OUTPUT_DECLARE(output_external, output); |
| 7840 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7841 | |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 7842 | status = psa_generate_random_internal(output, output_size); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7843 | |
David Horstmann | 4a48bec | 2024-03-13 15:42:31 +0000 | [diff] [blame] | 7844 | #if !defined(MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS) |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 7845 | exit: |
David Horstmann | e097bbd | 2024-02-28 14:17:10 +0000 | [diff] [blame] | 7846 | #endif |
David Horstmann | 6e99bb2 | 2024-02-06 15:27:49 +0000 | [diff] [blame] | 7847 | LOCAL_OUTPUT_FREE(output_external, output); |
| 7848 | return status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7849 | } |
| 7850 | |
Gilles Peskine | e3dbdd8 | 2019-02-25 11:04:06 +0100 | [diff] [blame] | 7851 | #if defined(MBEDTLS_PSA_INJECT_ENTROPY) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7852 | psa_status_t mbedtls_psa_inject_entropy(const uint8_t *seed, |
| 7853 | size_t seed_size) |
Netanel Gonen | 2bcd312 | 2018-11-19 11:53:02 +0200 | [diff] [blame] | 7854 | { |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 7855 | if (psa_get_initialized()) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7856 | return PSA_ERROR_NOT_PERMITTED; |
| 7857 | } |
Netanel Gonen | 21f37cb | 2018-11-19 11:53:55 +0200 | [diff] [blame] | 7858 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7859 | if (((seed_size < MBEDTLS_ENTROPY_MIN_PLATFORM) || |
| 7860 | (seed_size < MBEDTLS_ENTROPY_BLOCK_SIZE)) || |
| 7861 | (seed_size > MBEDTLS_ENTROPY_MAX_SEED_SIZE)) { |
| 7862 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7863 | } |
Netanel Gonen | 21f37cb | 2018-11-19 11:53:55 +0200 | [diff] [blame] | 7864 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7865 | return mbedtls_psa_storage_inject_entropy(seed, seed_size); |
Netanel Gonen | 2bcd312 | 2018-11-19 11:53:02 +0200 | [diff] [blame] | 7866 | } |
Gilles Peskine | e3dbdd8 | 2019-02-25 11:04:06 +0100 | [diff] [blame] | 7867 | #endif /* MBEDTLS_PSA_INJECT_ENTROPY */ |
Netanel Gonen | 2bcd312 | 2018-11-19 11:53:02 +0200 | [diff] [blame] | 7868 | |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7869 | /** Validate the key type and size for key generation |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7870 | * |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7871 | * \param type The key type |
| 7872 | * \param bits The number of bits of the key |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7873 | * |
| 7874 | * \retval #PSA_SUCCESS |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7875 | * The key type and size are valid. |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7876 | * \retval #PSA_ERROR_INVALID_ARGUMENT |
| 7877 | * The size in bits of the key is not valid. |
| 7878 | * \retval #PSA_ERROR_NOT_SUPPORTED |
| 7879 | * The type and/or the size in bits of the key or the combination of |
| 7880 | * the two is not supported. |
| 7881 | */ |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7882 | static psa_status_t psa_validate_key_type_and_size_for_key_generation( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7883 | psa_key_type_t type, size_t bits) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7884 | { |
Ronald Cron | f3bb761 | 2020-10-02 20:11:59 +0200 | [diff] [blame] | 7885 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7886 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7887 | if (key_type_is_raw_bytes(type)) { |
| 7888 | status = psa_validate_unstructured_key_bit_size(type, bits); |
| 7889 | if (status != PSA_SUCCESS) { |
| 7890 | return status; |
| 7891 | } |
| 7892 | } else |
Valerio Setti | f6d4dfb | 2023-07-10 10:55:12 +0200 | [diff] [blame] | 7893 | #if defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7894 | if (PSA_KEY_TYPE_IS_RSA(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
| 7895 | if (bits > PSA_VENDOR_RSA_MAX_KEY_BITS) { |
| 7896 | return PSA_ERROR_NOT_SUPPORTED; |
| 7897 | } |
Waleed Elmelegy | d7bdbbe | 2023-07-20 16:26:58 +0000 | [diff] [blame] | 7898 | if (bits < PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS) { |
Waleed Elmelegy | ab57071 | 2023-07-05 16:40:58 +0000 | [diff] [blame] | 7899 | return PSA_ERROR_NOT_SUPPORTED; |
| 7900 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 7901 | |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7902 | /* Accept only byte-aligned keys, for the same reasons as |
| 7903 | * in psa_import_rsa_key(). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7904 | if (bits % 8 != 0) { |
| 7905 | return PSA_ERROR_NOT_SUPPORTED; |
| 7906 | } |
| 7907 | } else |
Valerio Setti | f6d4dfb | 2023-07-10 10:55:12 +0200 | [diff] [blame] | 7908 | #endif /* defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE) */ |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7909 | |
Valerio Setti | 6a9d0ee | 2023-06-21 10:07:21 +0200 | [diff] [blame] | 7910 | #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7911 | if (PSA_KEY_TYPE_IS_ECC(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
Ronald Cron | d81ab56 | 2021-02-16 09:01:16 +0100 | [diff] [blame] | 7912 | /* To avoid empty block, return successfully here. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7913 | return PSA_SUCCESS; |
| 7914 | } else |
Valerio Setti | 6a9d0ee | 2023-06-21 10:07:21 +0200 | [diff] [blame] | 7915 | #endif /* defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE) */ |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7916 | |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7917 | #if defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE) |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7918 | if (PSA_KEY_TYPE_IS_DH(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
Przemek Stekiel | d1cf1ba | 2023-04-27 12:04:21 +0200 | [diff] [blame] | 7919 | if (psa_is_dh_key_size_valid(bits) == 0) { |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7920 | return PSA_ERROR_NOT_SUPPORTED; |
| 7921 | } |
| 7922 | } else |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7923 | #endif /* defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE) */ |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7924 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7925 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7926 | } |
| 7927 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7928 | return PSA_SUCCESS; |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7929 | } |
| 7930 | |
Ronald Cron | 55ed059 | 2020-10-05 10:30:40 +0200 | [diff] [blame] | 7931 | psa_status_t psa_generate_key_internal( |
Ronald Cron | 2a38a6b | 2020-10-02 20:02:04 +0200 | [diff] [blame] | 7932 | const psa_key_attributes_t *attributes, |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 7933 | const psa_custom_key_parameters_t *custom, |
| 7934 | const uint8_t *custom_data, |
| 7935 | size_t custom_data_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7936 | uint8_t *key_buffer, size_t key_buffer_size, size_t *key_buffer_length) |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7937 | { |
| 7938 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 7939 | psa_key_type_t type = attributes->type; |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7940 | |
Gilles Peskine | 7a18f96 | 2024-02-12 16:48:11 +0100 | [diff] [blame] | 7941 | /* Only used for RSA */ |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 7942 | (void) custom; |
| 7943 | (void) custom_data; |
| 7944 | (void) custom_data_length; |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7945 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7946 | if (key_type_is_raw_bytes(type)) { |
David Horstmann | 93fa4e1 | 2024-03-12 15:02:28 +0000 | [diff] [blame] | 7947 | status = psa_generate_random_internal(key_buffer, key_buffer_size); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7948 | if (status != PSA_SUCCESS) { |
| 7949 | return status; |
| 7950 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 7951 | |
David Brown | 12ca503 | 2021-02-11 11:02:00 -0700 | [diff] [blame] | 7952 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7953 | if (type == PSA_KEY_TYPE_DES) { |
| 7954 | psa_des_set_key_parity(key_buffer, key_buffer_size); |
| 7955 | } |
David Brown | 8107e31 | 2021-02-12 08:08:46 -0700 | [diff] [blame] | 7956 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7957 | } else |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7958 | |
Valerio Setti | 76df8c1 | 2023-07-11 14:11:28 +0200 | [diff] [blame] | 7959 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7960 | if (type == PSA_KEY_TYPE_RSA_KEY_PAIR) { |
| 7961 | return mbedtls_psa_rsa_generate_key(attributes, |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 7962 | custom_data, custom_data_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7963 | key_buffer, |
| 7964 | key_buffer_size, |
| 7965 | key_buffer_length); |
| 7966 | } else |
Valerio Setti | 76df8c1 | 2023-07-11 14:11:28 +0200 | [diff] [blame] | 7967 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_GENERATE) */ |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7968 | |
Valerio Setti | bfeaf5b | 2023-06-20 13:27:46 +0200 | [diff] [blame] | 7969 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7970 | if (PSA_KEY_TYPE_IS_ECC(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
| 7971 | return mbedtls_psa_ecp_generate_key(attributes, |
| 7972 | key_buffer, |
| 7973 | key_buffer_size, |
| 7974 | key_buffer_length); |
| 7975 | } else |
Valerio Setti | bfeaf5b | 2023-06-20 13:27:46 +0200 | [diff] [blame] | 7976 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_GENERATE) */ |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7977 | |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7978 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_GENERATE) |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7979 | if (PSA_KEY_TYPE_IS_DH(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
| 7980 | return mbedtls_psa_ffdh_generate_key(attributes, |
| 7981 | key_buffer, |
| 7982 | key_buffer_size, |
| 7983 | key_buffer_length); |
| 7984 | } else |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7985 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_GENERATE) */ |
Steven Cooreman | 2914986 | 2020-08-05 15:43:42 +0200 | [diff] [blame] | 7986 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7987 | (void) key_buffer_length; |
| 7988 | return PSA_ERROR_NOT_SUPPORTED; |
Steven Cooreman | 2914986 | 2020-08-05 15:43:42 +0200 | [diff] [blame] | 7989 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7990 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7991 | return PSA_SUCCESS; |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 7992 | } |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 7993 | |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 7994 | psa_status_t psa_generate_key_custom(const psa_key_attributes_t *attributes, |
| 7995 | const psa_custom_key_parameters_t *custom, |
| 7996 | const uint8_t *custom_data, |
| 7997 | size_t custom_data_length, |
| 7998 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 7999 | { |
| 8000 | psa_status_t status; |
| 8001 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 8002 | psa_se_drv_table_entry_t *driver = NULL; |
Ronald Cron | 2b56bc8 | 2020-10-05 10:02:26 +0200 | [diff] [blame] | 8003 | size_t key_buffer_size; |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 8004 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 8005 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
| 8006 | |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 8007 | /* Reject any attempt to create a zero-length key so that we don't |
| 8008 | * risk tripping up later, e.g. on a malloc(0) that returns NULL. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8009 | if (psa_get_key_bits(attributes) == 0) { |
| 8010 | return PSA_ERROR_INVALID_ARGUMENT; |
| 8011 | } |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 8012 | |
Przemyslaw Stekiel | c0fe820 | 2021-10-07 11:08:56 +0200 | [diff] [blame] | 8013 | /* Reject any attempt to create a public key. */ |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 8014 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(attributes->type)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8015 | return PSA_ERROR_INVALID_ARGUMENT; |
| 8016 | } |
Przemyslaw Stekiel | c0fe820 | 2021-10-07 11:08:56 +0200 | [diff] [blame] | 8017 | |
Gilles Peskine | 7a18f96 | 2024-02-12 16:48:11 +0100 | [diff] [blame] | 8018 | #if defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE) |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 8019 | if (attributes->type == PSA_KEY_TYPE_RSA_KEY_PAIR) { |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 8020 | if (custom->flags != 0) { |
Gilles Peskine | 7a18f96 | 2024-02-12 16:48:11 +0100 | [diff] [blame] | 8021 | return PSA_ERROR_INVALID_ARGUMENT; |
| 8022 | } |
| 8023 | } else |
| 8024 | #endif |
Gilles Peskine | 52504f8 | 2024-06-20 17:19:58 +0200 | [diff] [blame] | 8025 | if (!psa_custom_key_parameters_are_default(custom, custom_data_length)) { |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 8026 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 8027 | } |
| 8028 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8029 | status = psa_start_key_creation(PSA_KEY_CREATION_GENERATE, attributes, |
| 8030 | &slot, &driver); |
| 8031 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 8032 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8033 | } |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 8034 | |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 8035 | /* In the case of a transparent key or an opaque key stored in local |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 8036 | * storage ( thus not in the case of generating a key in a secure element |
| 8037 | * with storage ( MBEDTLS_PSA_CRYPTO_SE_C ) ),we have to allocate a |
| 8038 | * buffer to hold the generated key material. */ |
Valerio Setti | 8d4f150 | 2024-06-14 07:49:05 +0200 | [diff] [blame] | 8039 | #if defined(MBEDTLS_PSA_STATIC_KEY_SLOTS) |
| 8040 | int is_slot_unused = (slot->key.in_use == 0); |
| 8041 | #else |
| 8042 | int is_slot_unused = (slot->key.data == NULL); |
| 8043 | #endif |
| 8044 | |
| 8045 | if (is_slot_unused) { |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 8046 | if (PSA_KEY_LIFETIME_GET_LOCATION(attributes->lifetime) == |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8047 | PSA_KEY_LOCATION_LOCAL_STORAGE) { |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 8048 | status = psa_validate_key_type_and_size_for_key_generation( |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 8049 | attributes->type, attributes->bits); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8050 | if (status != PSA_SUCCESS) { |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 8051 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8052 | } |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 8053 | |
| 8054 | key_buffer_size = PSA_EXPORT_KEY_OUTPUT_SIZE( |
Gilles Peskine | 2f107ae | 2024-02-28 01:26:46 +0100 | [diff] [blame] | 8055 | attributes->type, |
| 8056 | attributes->bits); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8057 | } else { |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 8058 | status = psa_driver_wrapper_get_key_buffer_size( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8059 | attributes, &key_buffer_size); |
| 8060 | if (status != PSA_SUCCESS) { |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 8061 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8062 | } |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 8063 | } |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 8064 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8065 | status = psa_allocate_buffer_to_slot(slot, key_buffer_size); |
| 8066 | if (status != PSA_SUCCESS) { |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 8067 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8068 | } |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 8069 | } |
| 8070 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8071 | status = psa_driver_wrapper_generate_key(attributes, |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 8072 | custom, |
| 8073 | custom_data, custom_data_length, |
Gilles Peskine | 7a18f96 | 2024-02-12 16:48:11 +0100 | [diff] [blame] | 8074 | slot->key.data, slot->key.bytes, |
| 8075 | &slot->key.bytes); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8076 | if (status != PSA_SUCCESS) { |
| 8077 | psa_remove_key_data_from_memory(slot); |
| 8078 | } |
Ronald Cron | 2b56bc8 | 2020-10-05 10:02:26 +0200 | [diff] [blame] | 8079 | |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 8080 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8081 | if (status == PSA_SUCCESS) { |
| 8082 | status = psa_finish_key_creation(slot, driver, key); |
| 8083 | } |
| 8084 | if (status != PSA_SUCCESS) { |
| 8085 | psa_fail_key_creation(slot, driver); |
| 8086 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 8087 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8088 | return status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8089 | } |
| 8090 | |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 8091 | psa_status_t psa_generate_key_ext(const psa_key_attributes_t *attributes, |
| 8092 | const psa_key_production_parameters_t *params, |
| 8093 | size_t params_data_length, |
| 8094 | mbedtls_svc_key_id_t *key) |
| 8095 | { |
| 8096 | return psa_generate_key_custom( |
| 8097 | attributes, |
| 8098 | (const psa_custom_key_parameters_t *) params, |
| 8099 | params->data, params_data_length, |
| 8100 | key); |
| 8101 | } |
| 8102 | |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 8103 | psa_status_t psa_generate_key(const psa_key_attributes_t *attributes, |
| 8104 | mbedtls_svc_key_id_t *key) |
| 8105 | { |
Gilles Peskine | f36d785 | 2024-06-06 21:11:44 +0200 | [diff] [blame] | 8106 | return psa_generate_key_custom(attributes, |
| 8107 | &default_custom_production, |
| 8108 | NULL, 0, |
| 8109 | key); |
Gilles Peskine | f0765fa | 2024-02-12 16:46:16 +0100 | [diff] [blame] | 8110 | } |
| 8111 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8112 | /****************************************************************/ |
| 8113 | /* Module setup */ |
| 8114 | /****************************************************************/ |
| 8115 | |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 8116 | #if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 8117 | psa_status_t mbedtls_psa_crypto_configure_entropy_sources( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8118 | void (* entropy_init)(mbedtls_entropy_context *ctx), |
| 8119 | void (* entropy_free)(mbedtls_entropy_context *ctx)) |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 8120 | { |
Paul Elliott | 8e15153 | 2024-02-23 17:35:29 +0000 | [diff] [blame] | 8121 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 8122 | |
| 8123 | #if defined(MBEDTLS_THREADING_C) |
| 8124 | mbedtls_mutex_lock(&mbedtls_threading_psa_rngdata_mutex); |
| 8125 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8126 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8127 | if (global_data.rng_state != RNG_NOT_INITIALIZED) { |
Paul Elliott | 8e15153 | 2024-02-23 17:35:29 +0000 | [diff] [blame] | 8128 | status = PSA_ERROR_BAD_STATE; |
| 8129 | } else { |
| 8130 | global_data.rng.entropy_init = entropy_init; |
| 8131 | global_data.rng.entropy_free = entropy_free; |
| 8132 | status = PSA_SUCCESS; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8133 | } |
Paul Elliott | 8e15153 | 2024-02-23 17:35:29 +0000 | [diff] [blame] | 8134 | |
| 8135 | #if defined(MBEDTLS_THREADING_C) |
| 8136 | mbedtls_mutex_unlock(&mbedtls_threading_psa_rngdata_mutex); |
| 8137 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8138 | |
| 8139 | return status; |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 8140 | } |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 8141 | #endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */ |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 8142 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8143 | void mbedtls_psa_crypto_free(void) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8144 | { |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8145 | |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 8146 | #if defined(MBEDTLS_THREADING_C) |
| 8147 | mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex); |
| 8148 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8149 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8150 | /* Nothing to do to free transaction. */ |
| 8151 | if (global_data.initialized & PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED) { |
| 8152 | global_data.initialized &= ~PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED; |
Valerio Setti | 83e0de8 | 2023-11-24 12:13:05 +0100 | [diff] [blame] | 8153 | } |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 8154 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8155 | if (global_data.initialized & PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS_INITIALIZED) { |
| 8156 | psa_wipe_all_key_slots(); |
| 8157 | global_data.initialized &= ~PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS_INITIALIZED; |
| 8158 | } |
Ronald Cron | 9ba7691 | 2021-04-10 16:57:30 +0200 | [diff] [blame] | 8159 | |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 8160 | #if defined(MBEDTLS_THREADING_C) |
| 8161 | mbedtls_mutex_unlock(&mbedtls_threading_psa_globaldata_mutex); |
| 8162 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8163 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8164 | #if defined(MBEDTLS_THREADING_C) |
| 8165 | mbedtls_mutex_lock(&mbedtls_threading_psa_rngdata_mutex); |
| 8166 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8167 | |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 8168 | if (global_data.rng_state != RNG_NOT_INITIALIZED) { |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 8169 | mbedtls_psa_random_free(&global_data.rng); |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 8170 | } |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8171 | global_data.rng_state = RNG_NOT_INITIALIZED; |
| 8172 | mbedtls_platform_zeroize(&global_data.rng, sizeof(global_data.rng)); |
| 8173 | |
| 8174 | #if defined(MBEDTLS_THREADING_C) |
| 8175 | mbedtls_mutex_unlock(&mbedtls_threading_psa_rngdata_mutex); |
| 8176 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8177 | |
| 8178 | #if defined(MBEDTLS_THREADING_C) |
| 8179 | mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex); |
| 8180 | #endif /* defined(MBEDTLS_THREADING_C) */ |
Ronald Cron | 9ba7691 | 2021-04-10 16:57:30 +0200 | [diff] [blame] | 8181 | |
| 8182 | /* Terminate drivers */ |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8183 | if (global_data.initialized & PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED) { |
| 8184 | psa_driver_wrapper_free(); |
| 8185 | global_data.initialized &= ~PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED; |
| 8186 | } |
| 8187 | |
| 8188 | #if defined(MBEDTLS_THREADING_C) |
| 8189 | mbedtls_mutex_unlock(&mbedtls_threading_psa_globaldata_mutex); |
| 8190 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8191 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8192 | } |
| 8193 | |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 8194 | #if defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS) |
| 8195 | /** Recover a transaction that was interrupted by a power failure. |
| 8196 | * |
| 8197 | * This function is called during initialization, before psa_crypto_init() |
| 8198 | * returns. If this function returns a failure status, the initialization |
| 8199 | * fails. |
| 8200 | */ |
| 8201 | static psa_status_t psa_crypto_recover_transaction( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8202 | const psa_crypto_transaction_t *transaction) |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 8203 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8204 | switch (transaction->unknown.type) { |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 8205 | case PSA_CRYPTO_TRANSACTION_CREATE_KEY: |
| 8206 | case PSA_CRYPTO_TRANSACTION_DESTROY_KEY: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8207 | /* TODO - fall through to the failure case until this |
| 8208 | * is implemented. |
| 8209 | * https://github.com/ARMmbed/mbed-crypto/issues/218 |
| 8210 | */ |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 8211 | default: |
| 8212 | /* We found an unsupported transaction in the storage. |
| 8213 | * We don't know what state the storage is in. Give up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8214 | return PSA_ERROR_DATA_INVALID; |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 8215 | } |
| 8216 | } |
| 8217 | #endif /* PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS */ |
| 8218 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8219 | static psa_status_t mbedtls_psa_crypto_init_subsystem(mbedtls_psa_crypto_subsystem subsystem) |
| 8220 | { |
| 8221 | psa_status_t status = PSA_SUCCESS; |
| 8222 | uint8_t driver_wrappers_initialized = 0; |
| 8223 | |
| 8224 | switch (subsystem) { |
| 8225 | case PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS: |
| 8226 | |
| 8227 | #if defined(MBEDTLS_THREADING_C) |
| 8228 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex)); |
| 8229 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8230 | |
| 8231 | if (!(global_data.initialized & PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED)) { |
| 8232 | /* Init drivers */ |
| 8233 | status = psa_driver_wrapper_init(); |
| 8234 | |
| 8235 | /* Drivers need shutdown regardless of startup errors. */ |
| 8236 | global_data.initialized |= PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED; |
| 8237 | |
| 8238 | |
| 8239 | } |
| 8240 | #if defined(MBEDTLS_THREADING_C) |
| 8241 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_unlock( |
| 8242 | &mbedtls_threading_psa_globaldata_mutex)); |
| 8243 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8244 | |
| 8245 | break; |
| 8246 | |
| 8247 | case PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS: |
| 8248 | |
| 8249 | #if defined(MBEDTLS_THREADING_C) |
| 8250 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex)); |
| 8251 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8252 | |
| 8253 | if (!(global_data.initialized & PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS_INITIALIZED)) { |
| 8254 | status = psa_initialize_key_slots(); |
| 8255 | |
| 8256 | /* Need to wipe keys even if initialization fails. */ |
| 8257 | global_data.initialized |= PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS_INITIALIZED; |
| 8258 | |
| 8259 | } |
| 8260 | #if defined(MBEDTLS_THREADING_C) |
| 8261 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_unlock( |
| 8262 | &mbedtls_threading_psa_globaldata_mutex)); |
| 8263 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8264 | |
| 8265 | break; |
| 8266 | |
| 8267 | case PSA_CRYPTO_SUBSYSTEM_RNG: |
| 8268 | |
| 8269 | #if defined(MBEDTLS_THREADING_C) |
| 8270 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex)); |
| 8271 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8272 | |
| 8273 | driver_wrappers_initialized = |
| 8274 | (global_data.initialized & PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS_INITIALIZED); |
| 8275 | |
| 8276 | #if defined(MBEDTLS_THREADING_C) |
| 8277 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_unlock( |
| 8278 | &mbedtls_threading_psa_globaldata_mutex)); |
| 8279 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8280 | |
| 8281 | /* Need to use separate mutex here, as initialisation can require |
| 8282 | * testing of init flags, which requires locking the global data |
| 8283 | * mutex. */ |
| 8284 | #if defined(MBEDTLS_THREADING_C) |
| 8285 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_lock(&mbedtls_threading_psa_rngdata_mutex)); |
| 8286 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8287 | |
| 8288 | /* Initialize and seed the random generator. */ |
| 8289 | if (global_data.rng_state == RNG_NOT_INITIALIZED && driver_wrappers_initialized) { |
| 8290 | mbedtls_psa_random_init(&global_data.rng); |
| 8291 | global_data.rng_state = RNG_INITIALIZED; |
| 8292 | |
| 8293 | status = mbedtls_psa_random_seed(&global_data.rng); |
| 8294 | if (status == PSA_SUCCESS) { |
| 8295 | global_data.rng_state = RNG_SEEDED; |
| 8296 | } |
| 8297 | } |
| 8298 | |
| 8299 | #if defined(MBEDTLS_THREADING_C) |
| 8300 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_unlock( |
| 8301 | &mbedtls_threading_psa_rngdata_mutex)); |
| 8302 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8303 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8304 | break; |
| 8305 | |
| 8306 | case PSA_CRYPTO_SUBSYSTEM_TRANSACTION: |
| 8307 | |
| 8308 | #if defined(MBEDTLS_THREADING_C) |
| 8309 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_lock(&mbedtls_threading_psa_globaldata_mutex)); |
| 8310 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8311 | |
| 8312 | if (!(global_data.initialized & PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED)) { |
| 8313 | #if defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS) |
| 8314 | status = psa_crypto_load_transaction(); |
| 8315 | if (status == PSA_SUCCESS) { |
| 8316 | status = psa_crypto_recover_transaction(&psa_crypto_transaction); |
| 8317 | if (status == PSA_SUCCESS) { |
| 8318 | global_data.initialized |= PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED; |
| 8319 | } |
| 8320 | status = psa_crypto_stop_transaction(); |
| 8321 | } else if (status == PSA_ERROR_DOES_NOT_EXIST) { |
| 8322 | /* There's no transaction to complete. It's all good. */ |
| 8323 | global_data.initialized |= PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED; |
| 8324 | status = PSA_SUCCESS; |
| 8325 | } |
| 8326 | #else /* defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS) */ |
| 8327 | global_data.initialized |= PSA_CRYPTO_SUBSYSTEM_TRANSACTION_INITIALIZED; |
| 8328 | status = PSA_SUCCESS; |
| 8329 | #endif /* defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS) */ |
| 8330 | } |
| 8331 | |
| 8332 | #if defined(MBEDTLS_THREADING_C) |
| 8333 | PSA_THREADING_CHK_GOTO_EXIT(mbedtls_mutex_unlock( |
| 8334 | &mbedtls_threading_psa_globaldata_mutex)); |
| 8335 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8336 | |
| 8337 | break; |
| 8338 | |
| 8339 | default: |
| 8340 | status = PSA_ERROR_CORRUPTION_DETECTED; |
| 8341 | } |
| 8342 | |
| 8343 | /* Exit label only required when using threading macros. */ |
| 8344 | #if defined(MBEDTLS_THREADING_C) |
| 8345 | exit: |
| 8346 | #endif /* defined(MBEDTLS_THREADING_C) */ |
| 8347 | |
| 8348 | return status; |
| 8349 | } |
| 8350 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8351 | psa_status_t psa_crypto_init(void) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8352 | { |
Gilles Peskine | 66fb126 | 2018-12-10 16:29:04 +0100 | [diff] [blame] | 8353 | psa_status_t status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8354 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8355 | /* Double initialization is explicitly allowed. Early out if everything is |
| 8356 | * done. */ |
| 8357 | if (psa_get_initialized()) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8358 | return PSA_SUCCESS; |
| 8359 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8360 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8361 | status = mbedtls_psa_crypto_init_subsystem(PSA_CRYPTO_SUBSYSTEM_DRIVER_WRAPPERS); |
Valerio Setti | 402cfba | 2023-11-13 10:24:32 +0100 | [diff] [blame] | 8362 | if (status != PSA_SUCCESS) { |
| 8363 | goto exit; |
| 8364 | } |
| 8365 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8366 | status = mbedtls_psa_crypto_init_subsystem(PSA_CRYPTO_SUBSYSTEM_KEY_SLOTS); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8367 | if (status != PSA_SUCCESS) { |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8368 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8369 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8370 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8371 | status = mbedtls_psa_crypto_init_subsystem(PSA_CRYPTO_SUBSYSTEM_RNG); |
| 8372 | if (status != PSA_SUCCESS) { |
| 8373 | goto exit; |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 8374 | } |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 8375 | |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8376 | status = mbedtls_psa_crypto_init_subsystem(PSA_CRYPTO_SUBSYSTEM_TRANSACTION); |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8377 | |
| 8378 | exit: |
Paul Elliott | 600472b | 2024-02-23 17:26:58 +0000 | [diff] [blame] | 8379 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8380 | if (status != PSA_SUCCESS) { |
| 8381 | mbedtls_psa_crypto_free(); |
| 8382 | } |
Paul Elliott | 47cee8e | 2024-03-08 21:38:02 +0000 | [diff] [blame] | 8383 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 8384 | return status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8385 | } |
| 8386 | |
Yanray Wang | ffc3c48 | 2023-07-11 12:01:04 +0800 | [diff] [blame] | 8387 | #if defined(PSA_WANT_ALG_SOME_PAKE) |
Przemek Stekiel | ca8d2b2 | 2023-01-17 16:21:33 +0100 | [diff] [blame] | 8388 | psa_status_t psa_crypto_driver_pake_get_password_len( |
| 8389 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 8390 | size_t *password_len) |
| 8391 | { |
| 8392 | if (inputs->password_len == 0) { |
| 8393 | return PSA_ERROR_BAD_STATE; |
| 8394 | } |
| 8395 | |
| 8396 | *password_len = inputs->password_len; |
| 8397 | |
| 8398 | return PSA_SUCCESS; |
| 8399 | } |
| 8400 | |
| 8401 | psa_status_t psa_crypto_driver_pake_get_password( |
| 8402 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 8403 | uint8_t *buffer, size_t buffer_size, size_t *buffer_length) |
| 8404 | { |
| 8405 | if (inputs->password_len == 0) { |
| 8406 | return PSA_ERROR_BAD_STATE; |
| 8407 | } |
| 8408 | |
| 8409 | if (buffer_size < inputs->password_len) { |
| 8410 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 8411 | } |
| 8412 | |
| 8413 | memcpy(buffer, inputs->password, inputs->password_len); |
| 8414 | *buffer_length = inputs->password_len; |
| 8415 | |
| 8416 | return PSA_SUCCESS; |
| 8417 | } |
| 8418 | |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 8419 | psa_status_t psa_crypto_driver_pake_get_user_len( |
| 8420 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 8421 | size_t *user_len) |
| 8422 | { |
| 8423 | if (inputs->user_len == 0) { |
| 8424 | return PSA_ERROR_BAD_STATE; |
| 8425 | } |
| 8426 | |
| 8427 | *user_len = inputs->user_len; |
| 8428 | |
| 8429 | return PSA_SUCCESS; |
| 8430 | } |
| 8431 | |
| 8432 | psa_status_t psa_crypto_driver_pake_get_user( |
| 8433 | const psa_crypto_driver_pake_inputs_t *inputs, |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 8434 | uint8_t *user_id, size_t user_id_size, size_t *user_id_len) |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 8435 | { |
| 8436 | if (inputs->user_len == 0) { |
| 8437 | return PSA_ERROR_BAD_STATE; |
| 8438 | } |
| 8439 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 8440 | if (user_id_size < inputs->user_len) { |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 8441 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 8442 | } |
| 8443 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 8444 | memcpy(user_id, inputs->user, inputs->user_len); |
| 8445 | *user_id_len = inputs->user_len; |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 8446 | |
| 8447 | return PSA_SUCCESS; |
| 8448 | } |
| 8449 | |
| 8450 | psa_status_t psa_crypto_driver_pake_get_peer_len( |
| 8451 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 8452 | size_t *peer_len) |
| 8453 | { |
| 8454 | if (inputs->peer_len == 0) { |
| 8455 | return PSA_ERROR_BAD_STATE; |
| 8456 | } |
| 8457 | |
| 8458 | *peer_len = inputs->peer_len; |
| 8459 | |
| 8460 | return PSA_SUCCESS; |
| 8461 | } |
| 8462 | |
| 8463 | psa_status_t psa_crypto_driver_pake_get_peer( |
| 8464 | const psa_crypto_driver_pake_inputs_t *inputs, |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 8465 | uint8_t *peer_id, size_t peer_id_size, size_t *peer_id_length) |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 8466 | { |
| 8467 | if (inputs->peer_len == 0) { |
| 8468 | return PSA_ERROR_BAD_STATE; |
| 8469 | } |
| 8470 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 8471 | if (peer_id_size < inputs->peer_len) { |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 8472 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 8473 | } |
| 8474 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 8475 | memcpy(peer_id, inputs->peer, inputs->peer_len); |
| 8476 | *peer_id_length = inputs->peer_len; |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 8477 | |
| 8478 | return PSA_SUCCESS; |
| 8479 | } |
| 8480 | |
Przemek Stekiel | ca8d2b2 | 2023-01-17 16:21:33 +0100 | [diff] [blame] | 8481 | psa_status_t psa_crypto_driver_pake_get_cipher_suite( |
| 8482 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 8483 | psa_pake_cipher_suite_t *cipher_suite) |
| 8484 | { |
| 8485 | if (inputs->cipher_suite.algorithm == PSA_ALG_NONE) { |
| 8486 | return PSA_ERROR_BAD_STATE; |
| 8487 | } |
| 8488 | |
| 8489 | *cipher_suite = inputs->cipher_suite; |
| 8490 | |
| 8491 | return PSA_SUCCESS; |
| 8492 | } |
| 8493 | |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8494 | psa_status_t psa_pake_setup( |
| 8495 | psa_pake_operation_t *operation, |
| 8496 | const psa_pake_cipher_suite_t *cipher_suite) |
| 8497 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8498 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8499 | |
Przemek Stekiel | 1c3cfb4 | 2023-01-26 10:35:02 +0100 | [diff] [blame] | 8500 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_SETUP) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8501 | status = PSA_ERROR_BAD_STATE; |
| 8502 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8503 | } |
| 8504 | |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 8505 | if (PSA_ALG_IS_PAKE(cipher_suite->algorithm) == 0 || |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8506 | PSA_ALG_IS_HASH(cipher_suite->hash) == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8507 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8508 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8509 | } |
| 8510 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8511 | memset(&operation->data.inputs, 0, sizeof(operation->data.inputs)); |
| 8512 | |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8513 | operation->alg = cipher_suite->algorithm; |
Przemek Stekiel | 656b259 | 2023-03-22 13:15:33 +0100 | [diff] [blame] | 8514 | operation->primitive = PSA_PAKE_PRIMITIVE(cipher_suite->type, |
| 8515 | cipher_suite->family, cipher_suite->bits); |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8516 | operation->data.inputs.cipher_suite = *cipher_suite; |
| 8517 | |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8518 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8519 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 8520 | psa_jpake_computation_stage_t *computation_stage = |
Przemek Stekiel | dde6a91 | 2023-01-26 08:46:37 +0100 | [diff] [blame] | 8521 | &operation->computation_stage.jpake; |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 8522 | |
David Horstmann | 16f0151 | 2023-06-14 17:21:07 +0100 | [diff] [blame] | 8523 | memset(computation_stage, 0, sizeof(*computation_stage)); |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8524 | computation_stage->step = PSA_PAKE_STEP_KEY_SHARE; |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8525 | } else |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8526 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8527 | { |
| 8528 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8529 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8530 | } |
| 8531 | |
Przemek Stekiel | 1c3cfb4 | 2023-01-26 10:35:02 +0100 | [diff] [blame] | 8532 | operation->stage = PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS; |
| 8533 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8534 | return PSA_SUCCESS; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8535 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8536 | psa_pake_abort(operation); |
| 8537 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8538 | } |
| 8539 | |
| 8540 | psa_status_t psa_pake_set_password_key( |
| 8541 | psa_pake_operation_t *operation, |
| 8542 | mbedtls_svc_key_id_t password) |
| 8543 | { |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8544 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 8545 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 8546 | psa_key_slot_t *slot = NULL; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 8547 | psa_key_type_t type; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8548 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8549 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8550 | status = PSA_ERROR_BAD_STATE; |
| 8551 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8552 | } |
| 8553 | |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 8554 | status = psa_get_and_lock_key_slot_with_policy(password, &slot, |
| 8555 | PSA_KEY_USAGE_DERIVE, |
Przemek Stekiel | d5d28a2 | 2023-01-26 10:46:05 +0100 | [diff] [blame] | 8556 | operation->alg); |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8557 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8558 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8559 | } |
| 8560 | |
Gilles Peskine | 7a5d920 | 2024-02-28 01:18:23 +0100 | [diff] [blame] | 8561 | type = psa_get_key_type(&slot->attr); |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8562 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8563 | if (type != PSA_KEY_TYPE_PASSWORD && |
| 8564 | type != PSA_KEY_TYPE_PASSWORD_HASH) { |
| 8565 | status = PSA_ERROR_INVALID_ARGUMENT; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8566 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8567 | } |
| 8568 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8569 | operation->data.inputs.password = mbedtls_calloc(1, slot->key.bytes); |
| 8570 | if (operation->data.inputs.password == NULL) { |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8571 | status = PSA_ERROR_INSUFFICIENT_MEMORY; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8572 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8573 | } |
| 8574 | |
| 8575 | memcpy(operation->data.inputs.password, slot->key.data, slot->key.bytes); |
| 8576 | operation->data.inputs.password_len = slot->key.bytes; |
Gilles Peskine | 7fad3ef | 2024-02-28 01:08:27 +0100 | [diff] [blame] | 8577 | operation->data.inputs.attributes = slot->attr; |
| 8578 | |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8579 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8580 | if (status != PSA_SUCCESS) { |
| 8581 | psa_pake_abort(operation); |
| 8582 | } |
Ryan Everett | bbedfce | 2024-02-14 18:22:09 +0000 | [diff] [blame] | 8583 | unlock_status = psa_unregister_read_under_mutex(slot); |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8584 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8585 | } |
| 8586 | |
| 8587 | psa_status_t psa_pake_set_user( |
| 8588 | psa_pake_operation_t *operation, |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8589 | const uint8_t *user_id_external, |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8590 | size_t user_id_len) |
| 8591 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8592 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8593 | LOCAL_INPUT_DECLARE(user_id_external, user_id); |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8594 | |
| 8595 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8596 | status = PSA_ERROR_BAD_STATE; |
| 8597 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8598 | } |
| 8599 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8600 | if (user_id_len == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8601 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8602 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8603 | } |
| 8604 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 8605 | if (operation->data.inputs.user_len != 0) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8606 | status = PSA_ERROR_BAD_STATE; |
| 8607 | goto exit; |
| 8608 | } |
| 8609 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 8610 | operation->data.inputs.user = mbedtls_calloc(1, user_id_len); |
| 8611 | if (operation->data.inputs.user == NULL) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8612 | status = PSA_ERROR_INSUFFICIENT_MEMORY; |
| 8613 | goto exit; |
| 8614 | } |
| 8615 | |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8616 | LOCAL_INPUT_ALLOC(user_id_external, user_id_len, user_id); |
| 8617 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 8618 | memcpy(operation->data.inputs.user, user_id, user_id_len); |
| 8619 | operation->data.inputs.user_len = user_id_len; |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8620 | |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8621 | status = PSA_SUCCESS; |
| 8622 | |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8623 | exit: |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8624 | LOCAL_INPUT_FREE(user_id_external, user_id); |
| 8625 | if (status != PSA_SUCCESS) { |
| 8626 | psa_pake_abort(operation); |
| 8627 | } |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8628 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8629 | } |
| 8630 | |
| 8631 | psa_status_t psa_pake_set_peer( |
| 8632 | psa_pake_operation_t *operation, |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8633 | const uint8_t *peer_id_external, |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8634 | size_t peer_id_len) |
| 8635 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8636 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8637 | LOCAL_INPUT_DECLARE(peer_id_external, peer_id); |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8638 | |
| 8639 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8640 | status = PSA_ERROR_BAD_STATE; |
| 8641 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8642 | } |
| 8643 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8644 | if (peer_id_len == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8645 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8646 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8647 | } |
| 8648 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 8649 | if (operation->data.inputs.peer_len != 0) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8650 | status = PSA_ERROR_BAD_STATE; |
| 8651 | goto exit; |
| 8652 | } |
| 8653 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 8654 | operation->data.inputs.peer = mbedtls_calloc(1, peer_id_len); |
| 8655 | if (operation->data.inputs.peer == NULL) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8656 | status = PSA_ERROR_INSUFFICIENT_MEMORY; |
| 8657 | goto exit; |
| 8658 | } |
| 8659 | |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8660 | LOCAL_INPUT_ALLOC(peer_id_external, peer_id_len, peer_id); |
| 8661 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 8662 | memcpy(operation->data.inputs.peer, peer_id, peer_id_len); |
| 8663 | operation->data.inputs.peer_len = peer_id_len; |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8664 | |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8665 | status = PSA_SUCCESS; |
| 8666 | |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8667 | exit: |
David Horstmann | 4f534ae | 2024-01-22 17:35:59 +0000 | [diff] [blame] | 8668 | LOCAL_INPUT_FREE(peer_id_external, peer_id); |
| 8669 | if (status != PSA_SUCCESS) { |
| 8670 | psa_pake_abort(operation); |
| 8671 | } |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8672 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8673 | } |
| 8674 | |
| 8675 | psa_status_t psa_pake_set_role( |
| 8676 | psa_pake_operation_t *operation, |
| 8677 | psa_pake_role_t role) |
| 8678 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8679 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8680 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8681 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8682 | status = PSA_ERROR_BAD_STATE; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8683 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8684 | } |
| 8685 | |
Przemek Stekiel | 09104b8 | 2023-03-06 14:11:51 +0100 | [diff] [blame] | 8686 | switch (operation->alg) { |
| 8687 | #if defined(PSA_WANT_ALG_JPAKE) |
| 8688 | case PSA_ALG_JPAKE: |
| 8689 | if (role == PSA_PAKE_ROLE_NONE) { |
| 8690 | return PSA_SUCCESS; |
| 8691 | } |
| 8692 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8693 | break; |
| 8694 | #endif |
| 8695 | default: |
| 8696 | (void) role; |
| 8697 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8698 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8699 | } |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8700 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8701 | psa_pake_abort(operation); |
| 8702 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8703 | } |
| 8704 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8705 | /* Auxiliary function to convert core computation stage to single driver step. */ |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8706 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | 251e86a | 2023-02-17 14:30:50 +0100 | [diff] [blame] | 8707 | static psa_crypto_driver_pake_step_t convert_jpake_computation_stage_to_driver_step( |
Przemek Stekiel | dde6a91 | 2023-01-26 08:46:37 +0100 | [diff] [blame] | 8708 | psa_jpake_computation_stage_t *stage) |
Przemek Stekiel | b09c487 | 2023-01-17 12:05:38 +0100 | [diff] [blame] | 8709 | { |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 8710 | psa_crypto_driver_pake_step_t key_share_step; |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8711 | if (stage->round == PSA_JPAKE_FIRST) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8712 | int is_x1; |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 8713 | |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 8714 | if (stage->io_mode == PSA_JPAKE_OUTPUT) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8715 | is_x1 = (stage->outputs < 1); |
| 8716 | } else { |
| 8717 | is_x1 = (stage->inputs < 1); |
| 8718 | } |
| 8719 | |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 8720 | key_share_step = is_x1 ? |
| 8721 | PSA_JPAKE_X1_STEP_KEY_SHARE : |
| 8722 | PSA_JPAKE_X2_STEP_KEY_SHARE; |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8723 | } else if (stage->round == PSA_JPAKE_SECOND) { |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 8724 | key_share_step = (stage->io_mode == PSA_JPAKE_OUTPUT) ? |
| 8725 | PSA_JPAKE_X2S_STEP_KEY_SHARE : |
| 8726 | PSA_JPAKE_X4S_STEP_KEY_SHARE; |
| 8727 | } else { |
| 8728 | return PSA_JPAKE_STEP_INVALID; |
Przemek Stekiel | b09c487 | 2023-01-17 12:05:38 +0100 | [diff] [blame] | 8729 | } |
Agathiyan Bragadeesh | 387bfa5 | 2023-07-17 17:01:33 +0100 | [diff] [blame] | 8730 | return (psa_crypto_driver_pake_step_t) (key_share_step + stage->step - PSA_PAKE_STEP_KEY_SHARE); |
Przemek Stekiel | b09c487 | 2023-01-17 12:05:38 +0100 | [diff] [blame] | 8731 | } |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8732 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | b09c487 | 2023-01-17 12:05:38 +0100 | [diff] [blame] | 8733 | |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8734 | static psa_status_t psa_pake_complete_inputs( |
| 8735 | psa_pake_operation_t *operation) |
| 8736 | { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8737 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 18620a3 | 2023-01-17 16:34:52 +0100 | [diff] [blame] | 8738 | /* Create copy of the inputs on stack as inputs share memory |
| 8739 | with the driver context which will be setup by the driver. */ |
| 8740 | psa_crypto_driver_pake_inputs_t inputs = operation->data.inputs; |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8741 | |
Przemek Stekiel | fde1128 | 2023-03-13 16:06:09 +0100 | [diff] [blame] | 8742 | if (inputs.password_len == 0) { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8743 | return PSA_ERROR_BAD_STATE; |
| 8744 | } |
| 8745 | |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8746 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | fde1128 | 2023-03-13 16:06:09 +0100 | [diff] [blame] | 8747 | if (inputs.user_len == 0 || inputs.peer_len == 0) { |
| 8748 | return PSA_ERROR_BAD_STATE; |
| 8749 | } |
Przemek Stekiel | dff21d3 | 2023-02-14 20:09:10 +0100 | [diff] [blame] | 8750 | } |
| 8751 | |
Przemek Stekiel | 18620a3 | 2023-01-17 16:34:52 +0100 | [diff] [blame] | 8752 | /* Clear driver context */ |
| 8753 | mbedtls_platform_zeroize(&operation->data, sizeof(operation->data)); |
| 8754 | |
| 8755 | status = psa_driver_wrapper_pake_setup(operation, &inputs); |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8756 | |
| 8757 | /* Driver is responsible for creating its own copy of the password. */ |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 8758 | mbedtls_zeroize_and_free(inputs.password, inputs.password_len); |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8759 | |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8760 | /* User and peer are translated to role. */ |
| 8761 | mbedtls_free(inputs.user); |
| 8762 | mbedtls_free(inputs.peer); |
| 8763 | |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8764 | if (status == PSA_SUCCESS) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8765 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8766 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | d93de32 | 2023-02-24 08:39:04 +0100 | [diff] [blame] | 8767 | operation->stage = PSA_PAKE_OPERATION_STAGE_COMPUTATION; |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8768 | } else |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8769 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8770 | { |
| 8771 | status = PSA_ERROR_NOT_SUPPORTED; |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8772 | } |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8773 | } |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8774 | return status; |
| 8775 | } |
| 8776 | |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8777 | #if defined(PSA_WANT_ALG_JPAKE) |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8778 | static psa_status_t psa_jpake_prologue( |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8779 | psa_pake_operation_t *operation, |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8780 | psa_pake_step_t step, |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8781 | psa_jpake_io_mode_t io_mode) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8782 | { |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8783 | if (step != PSA_PAKE_STEP_KEY_SHARE && |
| 8784 | step != PSA_PAKE_STEP_ZK_PUBLIC && |
| 8785 | step != PSA_PAKE_STEP_ZK_PROOF) { |
| 8786 | return PSA_ERROR_INVALID_ARGUMENT; |
| 8787 | } |
| 8788 | |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8789 | psa_jpake_computation_stage_t *computation_stage = |
| 8790 | &operation->computation_stage.jpake; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8791 | |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8792 | if (computation_stage->round != PSA_JPAKE_FIRST && |
| 8793 | computation_stage->round != PSA_JPAKE_SECOND) { |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8794 | return PSA_ERROR_BAD_STATE; |
| 8795 | } |
| 8796 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8797 | /* Check that the step we are given is the one we were expecting */ |
| 8798 | if (step != computation_stage->step) { |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8799 | return PSA_ERROR_BAD_STATE; |
| 8800 | } |
| 8801 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8802 | if (step == PSA_PAKE_STEP_KEY_SHARE && |
| 8803 | computation_stage->inputs == 0 && |
| 8804 | computation_stage->outputs == 0) { |
| 8805 | /* Start of the round, so function decides whether we are inputting |
| 8806 | * or outputting */ |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 8807 | computation_stage->io_mode = io_mode; |
| 8808 | } else if (computation_stage->io_mode != io_mode) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8809 | /* Middle of the round so the mode we are in must match the function |
| 8810 | * called by the user */ |
| 8811 | return PSA_ERROR_BAD_STATE; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8812 | } |
| 8813 | |
| 8814 | return PSA_SUCCESS; |
| 8815 | } |
| 8816 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8817 | static psa_status_t psa_jpake_epilogue( |
| 8818 | psa_pake_operation_t *operation, |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8819 | psa_jpake_io_mode_t io_mode) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8820 | { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8821 | psa_jpake_computation_stage_t *stage = |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8822 | &operation->computation_stage.jpake; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8823 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8824 | if (stage->step == PSA_PAKE_STEP_ZK_PROOF) { |
| 8825 | /* End of an input/output */ |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8826 | if (io_mode == PSA_JPAKE_INPUT) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8827 | stage->inputs++; |
David Horstmann | 246ec5a | 2023-06-27 10:33:06 +0100 | [diff] [blame] | 8828 | if (stage->inputs == PSA_JPAKE_EXPECTED_INPUTS(stage->round)) { |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 8829 | stage->io_mode = PSA_JPAKE_OUTPUT; |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8830 | } |
| 8831 | } |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8832 | if (io_mode == PSA_JPAKE_OUTPUT) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8833 | stage->outputs++; |
David Horstmann | 246ec5a | 2023-06-27 10:33:06 +0100 | [diff] [blame] | 8834 | if (stage->outputs == PSA_JPAKE_EXPECTED_OUTPUTS(stage->round)) { |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 8835 | stage->io_mode = PSA_JPAKE_INPUT; |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8836 | } |
| 8837 | } |
David Horstmann | 246ec5a | 2023-06-27 10:33:06 +0100 | [diff] [blame] | 8838 | if (stage->inputs == PSA_JPAKE_EXPECTED_INPUTS(stage->round) && |
| 8839 | stage->outputs == PSA_JPAKE_EXPECTED_OUTPUTS(stage->round)) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8840 | /* End of a round, move to the next round */ |
| 8841 | stage->inputs = 0; |
| 8842 | stage->outputs = 0; |
| 8843 | stage->round++; |
| 8844 | } |
| 8845 | stage->step = PSA_PAKE_STEP_KEY_SHARE; |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8846 | } else { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8847 | stage->step++; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8848 | } |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8849 | return PSA_SUCCESS; |
| 8850 | } |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8851 | |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8852 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8853 | |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8854 | psa_status_t psa_pake_output( |
| 8855 | psa_pake_operation_t *operation, |
| 8856 | psa_pake_step_t step, |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 8857 | uint8_t *output_external, |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8858 | size_t output_size, |
| 8859 | size_t *output_length) |
| 8860 | { |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8861 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8862 | psa_crypto_driver_pake_step_t driver_step = PSA_JPAKE_STEP_INVALID; |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 8863 | LOCAL_OUTPUT_DECLARE(output_external, output); |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 8864 | *output_length = 0; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8865 | |
| 8866 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8867 | status = psa_pake_complete_inputs(operation); |
| 8868 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8869 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8870 | } |
| 8871 | } |
| 8872 | |
| 8873 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8874 | status = PSA_ERROR_BAD_STATE; |
| 8875 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8876 | } |
| 8877 | |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 8878 | if (output_size == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8879 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8880 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8881 | } |
| 8882 | |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8883 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8884 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8885 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8886 | status = psa_jpake_prologue(operation, step, PSA_JPAKE_OUTPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8887 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8888 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8889 | } |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8890 | driver_step = convert_jpake_computation_stage_to_driver_step( |
| 8891 | &operation->computation_stage.jpake); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8892 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8893 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8894 | default: |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8895 | (void) step; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8896 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8897 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8898 | } |
| 8899 | |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 8900 | LOCAL_OUTPUT_ALLOC(output_external, output_size, output); |
| 8901 | |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8902 | status = psa_driver_wrapper_pake_output(operation, driver_step, |
| 8903 | output, output_size, output_length); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8904 | |
| 8905 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8906 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8907 | } |
| 8908 | |
| 8909 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8910 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8911 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8912 | status = psa_jpake_epilogue(operation, PSA_JPAKE_OUTPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8913 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8914 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8915 | } |
| 8916 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8917 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8918 | default: |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8919 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8920 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8921 | } |
| 8922 | |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8923 | exit: |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 8924 | LOCAL_OUTPUT_FREE(output_external, output); |
| 8925 | if (status != PSA_SUCCESS) { |
| 8926 | psa_pake_abort(operation); |
| 8927 | } |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8928 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8929 | } |
| 8930 | |
| 8931 | psa_status_t psa_pake_input( |
| 8932 | psa_pake_operation_t *operation, |
| 8933 | psa_pake_step_t step, |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 8934 | const uint8_t *input_external, |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8935 | size_t input_length) |
| 8936 | { |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8937 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8938 | psa_crypto_driver_pake_step_t driver_step = PSA_JPAKE_STEP_INVALID; |
Przemek Stekiel | 256c75d | 2023-03-23 14:09:34 +0100 | [diff] [blame] | 8939 | const size_t max_input_length = (size_t) PSA_PAKE_INPUT_SIZE(operation->alg, |
| 8940 | operation->primitive, |
| 8941 | step); |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 8942 | LOCAL_INPUT_DECLARE(input_external, input); |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8943 | |
| 8944 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8945 | status = psa_pake_complete_inputs(operation); |
| 8946 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8947 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8948 | } |
| 8949 | } |
| 8950 | |
| 8951 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8952 | status = PSA_ERROR_BAD_STATE; |
| 8953 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8954 | } |
| 8955 | |
Przemek Stekiel | 256c75d | 2023-03-23 14:09:34 +0100 | [diff] [blame] | 8956 | if (input_length == 0 || input_length > max_input_length) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8957 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8958 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8959 | } |
| 8960 | |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8961 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8962 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8963 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8964 | status = psa_jpake_prologue(operation, step, PSA_JPAKE_INPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8965 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8966 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8967 | } |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8968 | driver_step = convert_jpake_computation_stage_to_driver_step( |
| 8969 | &operation->computation_stage.jpake); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8970 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8971 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8972 | default: |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8973 | (void) step; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8974 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8975 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8976 | } |
| 8977 | |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 8978 | LOCAL_INPUT_ALLOC(input_external, input_length, input); |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8979 | status = psa_driver_wrapper_pake_input(operation, driver_step, |
| 8980 | input, input_length); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8981 | |
| 8982 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8983 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8984 | } |
| 8985 | |
| 8986 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8987 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8988 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8989 | status = psa_jpake_epilogue(operation, PSA_JPAKE_INPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8990 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8991 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8992 | } |
| 8993 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8994 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8995 | default: |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8996 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8997 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8998 | } |
| 8999 | |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 9000 | exit: |
David Horstmann | c75639d | 2024-01-22 17:56:39 +0000 | [diff] [blame] | 9001 | LOCAL_INPUT_FREE(input_external, input); |
| 9002 | if (status != PSA_SUCCESS) { |
| 9003 | psa_pake_abort(operation); |
| 9004 | } |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 9005 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 9006 | } |
| 9007 | |
| 9008 | psa_status_t psa_pake_get_implicit_key( |
| 9009 | psa_pake_operation_t *operation, |
| 9010 | psa_key_derivation_operation_t *output) |
| 9011 | { |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 9012 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 9013 | psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 251e86a | 2023-02-17 14:30:50 +0100 | [diff] [blame] | 9014 | uint8_t shared_key[MBEDTLS_PSA_JPAKE_BUFFER_SIZE]; |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 9015 | size_t shared_key_len = 0; |
| 9016 | |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 9017 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 9018 | status = PSA_ERROR_BAD_STATE; |
| 9019 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 9020 | } |
| 9021 | |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 9022 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 9023 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 9024 | psa_jpake_computation_stage_t *computation_stage = |
Przemek Stekiel | 083745e | 2023-02-23 17:28:23 +0100 | [diff] [blame] | 9025 | &operation->computation_stage.jpake; |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 9026 | if (computation_stage->round != PSA_JPAKE_FINISHED) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 9027 | status = PSA_ERROR_BAD_STATE; |
| 9028 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 9029 | } |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 9030 | } else |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 9031 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 9032 | { |
| 9033 | status = PSA_ERROR_NOT_SUPPORTED; |
| 9034 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 9035 | } |
| 9036 | |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 9037 | status = psa_driver_wrapper_pake_get_implicit_key(operation, |
| 9038 | shared_key, |
Przemek Stekiel | 6b64862 | 2023-02-19 22:55:33 +0100 | [diff] [blame] | 9039 | sizeof(shared_key), |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 9040 | &shared_key_len); |
| 9041 | |
| 9042 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 9043 | goto exit; |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 9044 | } |
| 9045 | |
| 9046 | status = psa_key_derivation_input_bytes(output, |
| 9047 | PSA_KEY_DERIVATION_INPUT_SECRET, |
| 9048 | shared_key, |
| 9049 | shared_key_len); |
| 9050 | |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 9051 | mbedtls_platform_zeroize(shared_key, sizeof(shared_key)); |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 9052 | exit: |
| 9053 | abort_status = psa_pake_abort(operation); |
| 9054 | return status == PSA_SUCCESS ? abort_status : status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 9055 | } |
| 9056 | |
| 9057 | psa_status_t psa_pake_abort( |
| 9058 | psa_pake_operation_t *operation) |
| 9059 | { |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 9060 | psa_status_t status = PSA_SUCCESS; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 9061 | |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 9062 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 9063 | status = psa_driver_wrapper_pake_abort(operation); |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 9064 | } |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 9065 | |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 9066 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
| 9067 | if (operation->data.inputs.password != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 9068 | mbedtls_zeroize_and_free(operation->data.inputs.password, |
Przemek Stekiel | aa18342 | 2023-03-06 14:21:44 +0100 | [diff] [blame] | 9069 | operation->data.inputs.password_len); |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 9070 | } |
| 9071 | if (operation->data.inputs.user != NULL) { |
| 9072 | mbedtls_free(operation->data.inputs.user); |
| 9073 | } |
| 9074 | if (operation->data.inputs.peer != NULL) { |
| 9075 | mbedtls_free(operation->data.inputs.peer); |
| 9076 | } |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 9077 | } |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 9078 | memset(operation, 0, sizeof(psa_pake_operation_t)); |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 9079 | |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 9080 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 9081 | } |
Tom Cosgrove | 6d62fac | 2023-05-10 14:40:05 +0100 | [diff] [blame] | 9082 | #endif /* PSA_WANT_ALG_SOME_PAKE */ |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 9083 | |
David Horstmann | 00d7a04 | 2023-12-07 18:39:17 +0000 | [diff] [blame] | 9084 | /* Memory copying test hooks. These are called before input copy, after input |
| 9085 | * copy, before output copy and after output copy, respectively. |
| 9086 | * They are used by memory-poisoning tests to temporarily unpoison buffers |
| 9087 | * while they are copied. */ |
David Horstmann | e138dce | 2023-11-28 15:21:56 +0000 | [diff] [blame] | 9088 | #if defined(MBEDTLS_TEST_HOOKS) |
| 9089 | void (*psa_input_pre_copy_hook)(const uint8_t *input, size_t input_len) = NULL; |
| 9090 | void (*psa_input_post_copy_hook)(const uint8_t *input, size_t input_len) = NULL; |
| 9091 | void (*psa_output_pre_copy_hook)(const uint8_t *output, size_t output_len) = NULL; |
| 9092 | void (*psa_output_post_copy_hook)(const uint8_t *output, size_t output_len) = NULL; |
| 9093 | #endif |
David Horstmann | fde9739 | 2023-10-30 20:29:43 +0000 | [diff] [blame] | 9094 | |
David Horstmann | 1b7279a | 2023-11-15 15:18:30 +0000 | [diff] [blame] | 9095 | /** Copy from an input buffer to a local copy. |
| 9096 | * |
| 9097 | * \param[in] input Pointer to input buffer. |
| 9098 | * \param[in] input_len Length of the input buffer. |
| 9099 | * \param[out] input_copy Pointer to a local copy in which to store the input data. |
| 9100 | * \param[out] input_copy_len Length of the local copy buffer. |
| 9101 | * \return #PSA_SUCCESS, if the buffer was successfully |
| 9102 | * copied. |
| 9103 | * \return #PSA_ERROR_CORRUPTION_DETECTED, if the local |
| 9104 | * copy is too small to hold contents of the |
| 9105 | * input buffer. |
| 9106 | */ |
| 9107 | MBEDTLS_STATIC_TESTABLE |
David Horstmann | fde9739 | 2023-10-30 20:29:43 +0000 | [diff] [blame] | 9108 | psa_status_t psa_crypto_copy_input(const uint8_t *input, size_t input_len, |
| 9109 | uint8_t *input_copy, size_t input_copy_len) |
| 9110 | { |
| 9111 | if (input_len > input_copy_len) { |
David Horstmann | 49a7276 | 2023-11-03 19:51:40 +0000 | [diff] [blame] | 9112 | return PSA_ERROR_CORRUPTION_DETECTED; |
David Horstmann | fde9739 | 2023-10-30 20:29:43 +0000 | [diff] [blame] | 9113 | } |
| 9114 | |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9115 | #if defined(MBEDTLS_TEST_HOOKS) |
David Horstmann | e138dce | 2023-11-28 15:21:56 +0000 | [diff] [blame] | 9116 | if (psa_input_pre_copy_hook != NULL) { |
| 9117 | psa_input_pre_copy_hook(input, input_len); |
| 9118 | } |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9119 | #endif |
| 9120 | |
David Horstmann | 777e741 | 2023-11-15 17:33:47 +0000 | [diff] [blame] | 9121 | if (input_len > 0) { |
| 9122 | memcpy(input_copy, input, input_len); |
| 9123 | } |
David Horstmann | fde9739 | 2023-10-30 20:29:43 +0000 | [diff] [blame] | 9124 | |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9125 | #if defined(MBEDTLS_TEST_HOOKS) |
David Horstmann | e138dce | 2023-11-28 15:21:56 +0000 | [diff] [blame] | 9126 | if (psa_input_post_copy_hook != NULL) { |
| 9127 | psa_input_post_copy_hook(input, input_len); |
| 9128 | } |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9129 | #endif |
| 9130 | |
David Horstmann | fde9739 | 2023-10-30 20:29:43 +0000 | [diff] [blame] | 9131 | return PSA_SUCCESS; |
| 9132 | } |
| 9133 | |
David Horstmann | 1b7279a | 2023-11-15 15:18:30 +0000 | [diff] [blame] | 9134 | /** Copy from a local output buffer into a user-supplied one. |
| 9135 | * |
| 9136 | * \param[in] output_copy Pointer to a local buffer containing the output. |
| 9137 | * \param[in] output_copy_len Length of the local buffer. |
| 9138 | * \param[out] output Pointer to user-supplied output buffer. |
| 9139 | * \param[out] output_len Length of the user-supplied output buffer. |
| 9140 | * \return #PSA_SUCCESS, if the buffer was successfully |
| 9141 | * copied. |
David Horstmann | 671f5f5 | 2023-11-20 12:39:38 +0000 | [diff] [blame] | 9142 | * \return #PSA_ERROR_BUFFER_TOO_SMALL, if the |
David Horstmann | 1b7279a | 2023-11-15 15:18:30 +0000 | [diff] [blame] | 9143 | * user-supplied output buffer is too small to |
| 9144 | * hold the contents of the local buffer. |
| 9145 | */ |
| 9146 | MBEDTLS_STATIC_TESTABLE |
David Horstmann | 8978f5c | 2023-10-30 20:37:12 +0000 | [diff] [blame] | 9147 | psa_status_t psa_crypto_copy_output(const uint8_t *output_copy, size_t output_copy_len, |
| 9148 | uint8_t *output, size_t output_len) |
| 9149 | { |
| 9150 | if (output_len < output_copy_len) { |
David Horstmann | 671f5f5 | 2023-11-20 12:39:38 +0000 | [diff] [blame] | 9151 | return PSA_ERROR_BUFFER_TOO_SMALL; |
David Horstmann | 8978f5c | 2023-10-30 20:37:12 +0000 | [diff] [blame] | 9152 | } |
David Horstmann | 777e741 | 2023-11-15 17:33:47 +0000 | [diff] [blame] | 9153 | |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9154 | #if defined(MBEDTLS_TEST_HOOKS) |
David Horstmann | e138dce | 2023-11-28 15:21:56 +0000 | [diff] [blame] | 9155 | if (psa_output_pre_copy_hook != NULL) { |
| 9156 | psa_output_pre_copy_hook(output, output_len); |
| 9157 | } |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9158 | #endif |
| 9159 | |
David Horstmann | 777e741 | 2023-11-15 17:33:47 +0000 | [diff] [blame] | 9160 | if (output_copy_len > 0) { |
| 9161 | memcpy(output, output_copy, output_copy_len); |
| 9162 | } |
| 9163 | |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9164 | #if defined(MBEDTLS_TEST_HOOKS) |
David Horstmann | e138dce | 2023-11-28 15:21:56 +0000 | [diff] [blame] | 9165 | if (psa_output_post_copy_hook != NULL) { |
| 9166 | psa_output_post_copy_hook(output, output_len); |
| 9167 | } |
David Horstmann | 372b8bb | 2023-11-24 16:21:04 +0000 | [diff] [blame] | 9168 | #endif |
| 9169 | |
David Horstmann | 8978f5c | 2023-10-30 20:37:12 +0000 | [diff] [blame] | 9170 | return PSA_SUCCESS; |
| 9171 | } |
| 9172 | |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9173 | psa_status_t psa_crypto_local_input_alloc(const uint8_t *input, size_t input_len, |
| 9174 | psa_crypto_local_input_t *local_input) |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9175 | { |
| 9176 | psa_status_t status; |
| 9177 | |
David Horstmann | 9db1448 | 2023-11-23 15:50:37 +0000 | [diff] [blame] | 9178 | *local_input = PSA_CRYPTO_LOCAL_INPUT_INIT; |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9179 | |
David Horstmann | c5cc1c3 | 2023-11-15 18:11:26 +0000 | [diff] [blame] | 9180 | if (input_len == 0) { |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9181 | return PSA_SUCCESS; |
| 9182 | } |
| 9183 | |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9184 | local_input->buffer = mbedtls_calloc(input_len, 1); |
| 9185 | if (local_input->buffer == NULL) { |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9186 | /* Since we dealt with the zero-length case above, we know that |
| 9187 | * a NULL return value means a failure of allocation. */ |
| 9188 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 9189 | } |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9190 | /* From now on, we must free local_input->buffer on error. */ |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9191 | |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9192 | local_input->length = input_len; |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9193 | |
| 9194 | status = psa_crypto_copy_input(input, input_len, |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9195 | local_input->buffer, local_input->length); |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9196 | if (status != PSA_SUCCESS) { |
| 9197 | goto error; |
| 9198 | } |
| 9199 | |
| 9200 | return PSA_SUCCESS; |
| 9201 | |
| 9202 | error: |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9203 | mbedtls_free(local_input->buffer); |
| 9204 | local_input->buffer = NULL; |
| 9205 | local_input->length = 0; |
David Horstmann | 4ac7885 | 2023-11-07 16:36:48 +0000 | [diff] [blame] | 9206 | return status; |
| 9207 | } |
| 9208 | |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9209 | void psa_crypto_local_input_free(psa_crypto_local_input_t *local_input) |
David Horstmann | e6042ff | 2023-11-07 18:00:41 +0000 | [diff] [blame] | 9210 | { |
David Horstmann | f173405 | 2023-11-20 17:15:32 +0000 | [diff] [blame] | 9211 | mbedtls_free(local_input->buffer); |
| 9212 | local_input->buffer = NULL; |
| 9213 | local_input->length = 0; |
David Horstmann | e6042ff | 2023-11-07 18:00:41 +0000 | [diff] [blame] | 9214 | } |
| 9215 | |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9216 | psa_status_t psa_crypto_local_output_alloc(uint8_t *output, size_t output_len, |
| 9217 | psa_crypto_local_output_t *local_output) |
David Horstmann | ba3c7d6 | 2023-11-08 15:19:43 +0000 | [diff] [blame] | 9218 | { |
David Horstmann | 9db1448 | 2023-11-23 15:50:37 +0000 | [diff] [blame] | 9219 | *local_output = PSA_CRYPTO_LOCAL_OUTPUT_INIT; |
David Horstmann | ba3c7d6 | 2023-11-08 15:19:43 +0000 | [diff] [blame] | 9220 | |
David Horstmann | c5cc1c3 | 2023-11-15 18:11:26 +0000 | [diff] [blame] | 9221 | if (output_len == 0) { |
David Horstmann | ba3c7d6 | 2023-11-08 15:19:43 +0000 | [diff] [blame] | 9222 | return PSA_SUCCESS; |
| 9223 | } |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9224 | local_output->buffer = mbedtls_calloc(output_len, 1); |
| 9225 | if (local_output->buffer == NULL) { |
David Horstmann | ba3c7d6 | 2023-11-08 15:19:43 +0000 | [diff] [blame] | 9226 | /* Since we dealt with the zero-length case above, we know that |
| 9227 | * a NULL return value means a failure of allocation. */ |
| 9228 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 9229 | } |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9230 | local_output->length = output_len; |
| 9231 | local_output->original = output; |
David Horstmann | ba3c7d6 | 2023-11-08 15:19:43 +0000 | [diff] [blame] | 9232 | |
| 9233 | return PSA_SUCCESS; |
| 9234 | } |
| 9235 | |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9236 | psa_status_t psa_crypto_local_output_free(psa_crypto_local_output_t *local_output) |
David Horstmann | 9467ea3 | 2023-11-08 17:44:18 +0000 | [diff] [blame] | 9237 | { |
David Horstmann | c335a4e | 2023-11-15 15:57:32 +0000 | [diff] [blame] | 9238 | psa_status_t status; |
| 9239 | |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9240 | if (local_output->buffer == NULL) { |
| 9241 | local_output->length = 0; |
David Horstmann | 9467ea3 | 2023-11-08 17:44:18 +0000 | [diff] [blame] | 9242 | return PSA_SUCCESS; |
| 9243 | } |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9244 | if (local_output->original == NULL) { |
David Horstmann | 9467ea3 | 2023-11-08 17:44:18 +0000 | [diff] [blame] | 9245 | /* We have an internal copy but nothing to copy back to. */ |
| 9246 | return PSA_ERROR_CORRUPTION_DETECTED; |
| 9247 | } |
| 9248 | |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9249 | status = psa_crypto_copy_output(local_output->buffer, local_output->length, |
| 9250 | local_output->original, local_output->length); |
David Horstmann | c335a4e | 2023-11-15 15:57:32 +0000 | [diff] [blame] | 9251 | if (status != PSA_SUCCESS) { |
| 9252 | return status; |
| 9253 | } |
David Horstmann | 9467ea3 | 2023-11-08 17:44:18 +0000 | [diff] [blame] | 9254 | |
David Horstmann | 89875a4 | 2023-11-20 12:54:09 +0000 | [diff] [blame] | 9255 | mbedtls_free(local_output->buffer); |
| 9256 | local_output->buffer = NULL; |
| 9257 | local_output->length = 0; |
David Horstmann | 9467ea3 | 2023-11-08 17:44:18 +0000 | [diff] [blame] | 9258 | |
| 9259 | return PSA_SUCCESS; |
| 9260 | } |
| 9261 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 9262 | #endif /* MBEDTLS_PSA_CRYPTO_C */ |