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 |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 6 | * SPDX-License-Identifier: Apache-2.0 |
| 7 | * |
| 8 | * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| 9 | * not use this file except in compliance with the License. |
| 10 | * You may obtain a copy of the License at |
| 11 | * |
| 12 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 13 | * |
| 14 | * Unless required by applicable law or agreed to in writing, software |
| 15 | * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| 16 | * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 17 | * See the License for the specific language governing permissions and |
| 18 | * limitations under the License. |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 19 | */ |
| 20 | |
Gilles Peskine | db09ef6 | 2020-06-03 01:43:33 +0200 | [diff] [blame] | 21 | #include "common.h" |
Ronald Cron | afbc7ed | 2023-01-24 16:02:04 +0100 | [diff] [blame] | 22 | #include "psa_crypto_core_common.h" |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 23 | |
| 24 | #if defined(MBEDTLS_PSA_CRYPTO_C) |
mohammad1603 | 2701005 | 2018-07-03 13:16:15 +0300 | [diff] [blame] | 25 | |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 26 | #if defined(MBEDTLS_PSA_CRYPTO_CONFIG) |
| 27 | #include "check_crypto_config.h" |
| 28 | #endif |
| 29 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 30 | #include "psa/crypto.h" |
Przemyslaw Stekiel | 705fb0f | 2021-11-24 08:47:29 +0100 | [diff] [blame] | 31 | #include "psa/crypto_values.h" |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 32 | |
Ronald Cron | d6d2888 | 2020-12-14 14:56:02 +0100 | [diff] [blame] | 33 | #include "psa_crypto_cipher.h" |
Gilles Peskine | 039b90c | 2018-12-07 18:24:41 +0100 | [diff] [blame] | 34 | #include "psa_crypto_core.h" |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 35 | #include "psa_crypto_invasive.h" |
Steven Cooreman | cd84cb4 | 2020-07-16 20:28:36 +0200 | [diff] [blame] | 36 | #include "psa_crypto_driver_wrappers.h" |
Ronald Cron | 00b7bfc | 2020-11-25 15:25:26 +0100 | [diff] [blame] | 37 | #include "psa_crypto_ecp.h" |
Przemek Stekiel | 359f462 | 2022-12-05 14:11:55 +0100 | [diff] [blame] | 38 | #include "psa_crypto_ffdh.h" |
Steven Cooreman | 5f88e77 | 2021-03-15 11:07:12 +0100 | [diff] [blame] | 39 | #include "psa_crypto_hash.h" |
Steven Cooreman | 82c66b6 | 2021-03-19 17:39:17 +0100 | [diff] [blame] | 40 | #include "psa_crypto_mac.h" |
Ronald Cron | 00b7bfc | 2020-11-25 15:25:26 +0100 | [diff] [blame] | 41 | #include "psa_crypto_rsa.h" |
Ronald Cron | 7023db5 | 2020-11-20 18:17:42 +0100 | [diff] [blame] | 42 | #include "psa_crypto_ecp.h" |
Gilles Peskine | a8ade16 | 2019-06-26 11:24:49 +0200 | [diff] [blame] | 43 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | d089021 | 2019-06-24 14:34:43 +0200 | [diff] [blame] | 44 | #include "psa_crypto_se.h" |
Gilles Peskine | a8ade16 | 2019-06-26 11:24:49 +0200 | [diff] [blame] | 45 | #endif |
Gilles Peskine | 961849f | 2018-11-30 18:54:54 +0100 | [diff] [blame] | 46 | #include "psa_crypto_slot_management.h" |
Darryl Green | d49a499 | 2018-06-18 17:27:26 +0100 | [diff] [blame] | 47 | /* Include internal declarations that are useful for implementing persistently |
| 48 | * stored keys. */ |
| 49 | #include "psa_crypto_storage.h" |
| 50 | |
Gilles Peskine | b2b64d3 | 2020-12-14 16:43:58 +0100 | [diff] [blame] | 51 | #include "psa_crypto_random_impl.h" |
Gilles Peskine | 90edc99 | 2020-11-13 15:39:19 +0100 | [diff] [blame] | 52 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 53 | #include <stdlib.h> |
| 54 | #include <string.h> |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 55 | #include "mbedtls/platform.h" |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 56 | |
Gilles Peskine | 1c49f1a | 2020-11-13 18:46:25 +0100 | [diff] [blame] | 57 | #include "mbedtls/aes.h" |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 58 | #include "mbedtls/asn1.h" |
Jaeden Amero | 25384a2 | 2019-01-10 10:23:21 +0000 | [diff] [blame] | 59 | #include "mbedtls/asn1write.h" |
Gilles Peskine | a81d85b | 2018-06-26 16:10:23 +0200 | [diff] [blame] | 60 | #include "mbedtls/bignum.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 61 | #include "mbedtls/camellia.h" |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 62 | #include "mbedtls/chacha20.h" |
| 63 | #include "mbedtls/chachapoly.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 64 | #include "mbedtls/cipher.h" |
| 65 | #include "mbedtls/ccm.h" |
| 66 | #include "mbedtls/cmac.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 67 | #include "mbedtls/des.h" |
Gilles Peskine | b7ecdf0 | 2018-09-18 12:11:27 +0200 | [diff] [blame] | 68 | #include "mbedtls/ecdh.h" |
Gilles Peskine | 969ac72 | 2018-01-28 18:16:59 +0100 | [diff] [blame] | 69 | #include "mbedtls/ecp.h" |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 70 | #include "mbedtls/entropy.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 71 | #include "mbedtls/error.h" |
| 72 | #include "mbedtls/gcm.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 73 | #include "mbedtls/md5.h" |
Gilles Peskine | 20035e3 | 2018-02-03 22:44:14 +0100 | [diff] [blame] | 74 | #include "mbedtls/md.h" |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 75 | #include "mbedtls/pk.h" |
Chris Jones | daacb59 | 2021-03-09 17:03:29 +0000 | [diff] [blame] | 76 | #include "pk_wrap.h" |
Gilles Peskine | 3f10812 | 2018-12-07 18:14:53 +0100 | [diff] [blame] | 77 | #include "mbedtls/platform_util.h" |
Janos Follath | 24eed8d | 2019-11-22 13:21:35 +0000 | [diff] [blame] | 78 | #include "mbedtls/error.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 79 | #include "mbedtls/ripemd160.h" |
Gilles Peskine | 969ac72 | 2018-01-28 18:16:59 +0100 | [diff] [blame] | 80 | #include "mbedtls/rsa.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 81 | #include "mbedtls/sha1.h" |
| 82 | #include "mbedtls/sha256.h" |
| 83 | #include "mbedtls/sha512.h" |
Manuel Pégourié-Gonnard | 02b10d8 | 2023-03-28 12:33:20 +0200 | [diff] [blame] | 84 | #include "md_psa.h" |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 85 | |
Przemek Stekiel | 75fe3fb | 2022-06-09 14:44:55 +0200 | [diff] [blame] | 86 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF) || \ |
| 87 | defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) || \ |
| 88 | defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 89 | #define BUILTIN_ALG_ANY_HKDF 1 |
Przemek Stekiel | 75fe3fb | 2022-06-09 14:44:55 +0200 | [diff] [blame] | 90 | #endif |
| 91 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 92 | /****************************************************************/ |
| 93 | /* Global data, support functions and library management */ |
| 94 | /****************************************************************/ |
| 95 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 96 | static int key_type_is_raw_bytes(psa_key_type_t type) |
Gilles Peskine | 48c0ea1 | 2018-06-21 14:15:31 +0200 | [diff] [blame] | 97 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 98 | return PSA_KEY_TYPE_IS_UNSTRUCTURED(type); |
Gilles Peskine | 48c0ea1 | 2018-06-21 14:15:31 +0200 | [diff] [blame] | 99 | } |
| 100 | |
Gilles Peskine | 5a3c50e | 2018-12-04 12:27:09 +0100 | [diff] [blame] | 101 | /* Values for psa_global_data_t::rng_state */ |
| 102 | #define RNG_NOT_INITIALIZED 0 |
| 103 | #define RNG_INITIALIZED 1 |
| 104 | #define RNG_SEEDED 2 |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 105 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 106 | typedef struct { |
Dave Rodgman | 864f594 | 2023-08-16 18:04:44 +0100 | [diff] [blame^] | 107 | uint8_t initialized; |
| 108 | uint8_t rng_state; |
| 109 | uint8_t drivers_initialized; |
Gilles Peskine | 2d8a182 | 2021-11-08 22:20:03 +0100 | [diff] [blame] | 110 | mbedtls_psa_random_context_t rng; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 111 | } psa_global_data_t; |
| 112 | |
| 113 | static psa_global_data_t global_data; |
| 114 | |
Gilles Peskine | 5894e8e | 2020-12-14 14:54:06 +0100 | [diff] [blame] | 115 | #if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
| 116 | mbedtls_psa_drbg_context_t *const mbedtls_psa_random_state = |
| 117 | &global_data.rng.drbg; |
| 118 | #endif |
| 119 | |
itayzafrir | 0adf0fc | 2018-09-06 16:24:41 +0300 | [diff] [blame] | 120 | #define GUARD_MODULE_INITIALIZED \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 121 | if (global_data.initialized == 0) \ |
| 122 | return PSA_ERROR_BAD_STATE; |
itayzafrir | 0adf0fc | 2018-09-06 16:24:41 +0300 | [diff] [blame] | 123 | |
Manuel Pégourié-Gonnard | 7abdf7e | 2023-03-09 11:17:43 +0100 | [diff] [blame] | 124 | int psa_can_do_hash(psa_algorithm_t hash_alg) |
| 125 | { |
| 126 | (void) hash_alg; |
| 127 | return global_data.drivers_initialized; |
| 128 | } |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 129 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT) || \ |
Przemek Stekiel | 5341050 | 2023-04-28 13:18:43 +0200 | [diff] [blame] | 130 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) || \ |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 131 | defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE) |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 132 | static int psa_is_dh_key_size_valid(size_t bits) |
| 133 | { |
Przemek Stekiel | d1cf1ba | 2023-04-27 12:04:21 +0200 | [diff] [blame] | 134 | if (bits != 2048 && bits != 3072 && bits != 4096 && |
| 135 | bits != 6144 && bits != 8192) { |
| 136 | return 0; |
| 137 | } |
| 138 | |
| 139 | return 1; |
| 140 | } |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 141 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT || |
Przemek Stekiel | 5341050 | 2023-04-28 13:18:43 +0200 | [diff] [blame] | 142 | MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY || |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 143 | PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE */ |
Manuel Pégourié-Gonnard | 7abdf7e | 2023-03-09 11:17:43 +0100 | [diff] [blame] | 144 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 145 | psa_status_t mbedtls_to_psa_error(int ret) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 146 | { |
Gilles Peskine | dbf6896 | 2021-01-06 20:04:23 +0100 | [diff] [blame] | 147 | /* Mbed TLS error codes can combine a high-level error code and a |
| 148 | * low-level error code. The low-level error usually reflects the |
| 149 | * root cause better, so dispatch on that preferably. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 150 | int low_level_ret = -(-ret & 0x007f); |
| 151 | switch (low_level_ret != 0 ? low_level_ret : ret) { |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 152 | case 0: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 153 | return PSA_SUCCESS; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 154 | |
| 155 | case MBEDTLS_ERR_AES_INVALID_KEY_LENGTH: |
| 156 | case MBEDTLS_ERR_AES_INVALID_INPUT_LENGTH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 157 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 158 | case MBEDTLS_ERR_ASN1_OUT_OF_DATA: |
| 159 | case MBEDTLS_ERR_ASN1_UNEXPECTED_TAG: |
| 160 | case MBEDTLS_ERR_ASN1_INVALID_LENGTH: |
| 161 | case MBEDTLS_ERR_ASN1_LENGTH_MISMATCH: |
| 162 | case MBEDTLS_ERR_ASN1_INVALID_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 163 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 164 | case MBEDTLS_ERR_ASN1_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 165 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 166 | case MBEDTLS_ERR_ASN1_BUF_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 167 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | 9a94480 | 2018-06-21 09:35:35 +0200 | [diff] [blame] | 168 | |
Jaeden Amero | 93e2111 | 2019-02-20 13:57:28 +0000 | [diff] [blame] | 169 | #if defined(MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA) |
Jaeden Amero | 892cd6d | 2019-02-11 12:21:12 +0000 | [diff] [blame] | 170 | case MBEDTLS_ERR_CAMELLIA_BAD_INPUT_DATA: |
Jaeden Amero | 93e2111 | 2019-02-20 13:57:28 +0000 | [diff] [blame] | 171 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 172 | case MBEDTLS_ERR_CAMELLIA_INVALID_INPUT_LENGTH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 173 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 174 | |
| 175 | case MBEDTLS_ERR_CCM_BAD_INPUT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 176 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 177 | case MBEDTLS_ERR_CCM_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 178 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 179 | |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 180 | case MBEDTLS_ERR_CHACHA20_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 181 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 182 | |
| 183 | case MBEDTLS_ERR_CHACHAPOLY_BAD_STATE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 184 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 185 | case MBEDTLS_ERR_CHACHAPOLY_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 186 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 187 | |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 188 | case MBEDTLS_ERR_CIPHER_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 189 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 190 | case MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 191 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 192 | case MBEDTLS_ERR_CIPHER_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 193 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 194 | case MBEDTLS_ERR_CIPHER_INVALID_PADDING: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 195 | return PSA_ERROR_INVALID_PADDING; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 196 | case MBEDTLS_ERR_CIPHER_FULL_BLOCK_EXPECTED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 197 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 198 | case MBEDTLS_ERR_CIPHER_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 199 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 200 | case MBEDTLS_ERR_CIPHER_INVALID_CONTEXT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 201 | return PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 202 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 203 | #if !(defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) || \ |
| 204 | defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE)) |
Gilles Peskine | bee96c8 | 2020-11-23 21:00:09 +0100 | [diff] [blame] | 205 | /* Only check CTR_DRBG error codes if underlying mbedtls_xxx |
| 206 | * functions are passed a CTR_DRBG instance. */ |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 207 | case MBEDTLS_ERR_CTR_DRBG_ENTROPY_SOURCE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 208 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 209 | case MBEDTLS_ERR_CTR_DRBG_REQUEST_TOO_BIG: |
| 210 | case MBEDTLS_ERR_CTR_DRBG_INPUT_TOO_BIG: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 211 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 212 | case MBEDTLS_ERR_CTR_DRBG_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 213 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 214 | #endif |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 215 | |
| 216 | case MBEDTLS_ERR_DES_INVALID_INPUT_LENGTH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 217 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 218 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 219 | case MBEDTLS_ERR_ENTROPY_NO_SOURCES_DEFINED: |
| 220 | case MBEDTLS_ERR_ENTROPY_NO_STRONG_SOURCE: |
| 221 | case MBEDTLS_ERR_ENTROPY_SOURCE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 222 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 223 | |
| 224 | case MBEDTLS_ERR_GCM_AUTH_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 225 | return PSA_ERROR_INVALID_SIGNATURE; |
Mateusz Starzyk | f28261f | 2021-09-30 16:39:07 +0200 | [diff] [blame] | 226 | case MBEDTLS_ERR_GCM_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 227 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 228 | case MBEDTLS_ERR_GCM_BAD_INPUT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 229 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 230 | |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 231 | #if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) && \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 232 | defined(MBEDTLS_PSA_HMAC_DRBG_MD_TYPE) |
Gilles Peskine | bee96c8 | 2020-11-23 21:00:09 +0100 | [diff] [blame] | 233 | /* Only check HMAC_DRBG error codes if underlying mbedtls_xxx |
| 234 | * functions are passed a HMAC_DRBG instance. */ |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 235 | case MBEDTLS_ERR_HMAC_DRBG_ENTROPY_SOURCE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 236 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 237 | case MBEDTLS_ERR_HMAC_DRBG_REQUEST_TOO_BIG: |
| 238 | case MBEDTLS_ERR_HMAC_DRBG_INPUT_TOO_BIG: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 239 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 240 | case MBEDTLS_ERR_HMAC_DRBG_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 241 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 82e57d1 | 2020-11-13 21:31:17 +0100 | [diff] [blame] | 242 | #endif |
| 243 | |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 244 | case MBEDTLS_ERR_MD_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 245 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 246 | case MBEDTLS_ERR_MD_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 247 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 248 | case MBEDTLS_ERR_MD_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 249 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 250 | case MBEDTLS_ERR_MD_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 251 | return PSA_ERROR_STORAGE_FAILURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 252 | |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 253 | case MBEDTLS_ERR_MPI_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 254 | return PSA_ERROR_STORAGE_FAILURE; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 255 | case MBEDTLS_ERR_MPI_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 256 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 257 | case MBEDTLS_ERR_MPI_INVALID_CHARACTER: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 258 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 259 | case MBEDTLS_ERR_MPI_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 260 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 261 | case MBEDTLS_ERR_MPI_NEGATIVE_VALUE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 262 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 263 | case MBEDTLS_ERR_MPI_DIVISION_BY_ZERO: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 264 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 265 | case MBEDTLS_ERR_MPI_NOT_ACCEPTABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 266 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 267 | case MBEDTLS_ERR_MPI_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 268 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | f76aa77 | 2018-10-29 19:24:33 +0100 | [diff] [blame] | 269 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 270 | case MBEDTLS_ERR_PK_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 271 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 272 | case MBEDTLS_ERR_PK_TYPE_MISMATCH: |
| 273 | case MBEDTLS_ERR_PK_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 274 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 275 | case MBEDTLS_ERR_PK_FILE_IO_ERROR: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 276 | return PSA_ERROR_STORAGE_FAILURE; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 277 | case MBEDTLS_ERR_PK_KEY_INVALID_VERSION: |
| 278 | case MBEDTLS_ERR_PK_KEY_INVALID_FORMAT: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 279 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 280 | case MBEDTLS_ERR_PK_UNKNOWN_PK_ALG: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 281 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 282 | case MBEDTLS_ERR_PK_PASSWORD_REQUIRED: |
| 283 | case MBEDTLS_ERR_PK_PASSWORD_MISMATCH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 284 | return PSA_ERROR_NOT_PERMITTED; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 285 | case MBEDTLS_ERR_PK_INVALID_PUBKEY: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 286 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 287 | case MBEDTLS_ERR_PK_INVALID_ALG: |
| 288 | case MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE: |
| 289 | case MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 290 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 291 | case MBEDTLS_ERR_PK_SIG_LEN_MISMATCH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 292 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | f9f1bdf | 2021-06-23 20:32:27 +0200 | [diff] [blame] | 293 | case MBEDTLS_ERR_PK_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 294 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 295 | |
Gilles Peskine | ff2d200 | 2019-05-06 15:26:23 +0200 | [diff] [blame] | 296 | case MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 297 | return PSA_ERROR_HARDWARE_FAILURE; |
Gilles Peskine | ff2d200 | 2019-05-06 15:26:23 +0200 | [diff] [blame] | 298 | case MBEDTLS_ERR_PLATFORM_FEATURE_UNSUPPORTED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 299 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | ff2d200 | 2019-05-06 15:26:23 +0200 | [diff] [blame] | 300 | |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 301 | case MBEDTLS_ERR_RSA_BAD_INPUT_DATA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 302 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 303 | case MBEDTLS_ERR_RSA_INVALID_PADDING: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 304 | return PSA_ERROR_INVALID_PADDING; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 305 | case MBEDTLS_ERR_RSA_KEY_GEN_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 306 | return PSA_ERROR_HARDWARE_FAILURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 307 | case MBEDTLS_ERR_RSA_KEY_CHECK_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 308 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 309 | case MBEDTLS_ERR_RSA_PUBLIC_FAILED: |
| 310 | case MBEDTLS_ERR_RSA_PRIVATE_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 311 | return PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 312 | case MBEDTLS_ERR_RSA_VERIFY_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 313 | return PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 314 | case MBEDTLS_ERR_RSA_OUTPUT_TOO_LARGE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 315 | return PSA_ERROR_BUFFER_TOO_SMALL; |
Gilles Peskine | a590529 | 2018-02-07 20:59:33 +0100 | [diff] [blame] | 316 | case MBEDTLS_ERR_RSA_RNG_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 317 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Manuel Pégourié-Gonnard | 93c0847 | 2021-04-15 12:23:55 +0200 | [diff] [blame] | 318 | |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 319 | case MBEDTLS_ERR_ECP_BAD_INPUT_DATA: |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 320 | case MBEDTLS_ERR_ECP_INVALID_KEY: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 321 | return PSA_ERROR_INVALID_ARGUMENT; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 322 | case MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 323 | return PSA_ERROR_BUFFER_TOO_SMALL; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 324 | case MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 325 | return PSA_ERROR_NOT_SUPPORTED; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 326 | case MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH: |
| 327 | case MBEDTLS_ERR_ECP_VERIFY_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 328 | return PSA_ERROR_INVALID_SIGNATURE; |
itayzafrir | 7b30f8b | 2018-05-09 16:07:36 +0300 | [diff] [blame] | 329 | case MBEDTLS_ERR_ECP_ALLOC_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 330 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Gilles Peskine | 40d8160 | 2020-11-25 00:09:47 +0100 | [diff] [blame] | 331 | case MBEDTLS_ERR_ECP_RANDOM_FAILED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 332 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
Gilles Peskine | 40d8160 | 2020-11-25 00:09:47 +0100 | [diff] [blame] | 333 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 334 | case MBEDTLS_ERR_ECP_IN_PROGRESS: |
| 335 | return PSA_OPERATION_INCOMPLETE; |
| 336 | |
Janos Follath | a13b905 | 2019-11-22 12:48:59 +0000 | [diff] [blame] | 337 | case MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 338 | return PSA_ERROR_CORRUPTION_DETECTED; |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 339 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 340 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 341 | return PSA_ERROR_GENERIC_ERROR; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 342 | } |
| 343 | } |
| 344 | |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 345 | /** |
| 346 | * \brief For output buffers which contain "tags" |
| 347 | * (outputs that may be checked for validity like |
| 348 | * hashes, MACs and signatures), fill the unused |
| 349 | * part of the output buffer (the whole buffer on |
| 350 | * error, the trailing part on success) with |
| 351 | * something that isn't a valid tag (barring an |
| 352 | * attack on the tag and deliberately-crafted |
| 353 | * input), in case the caller doesn't check the |
| 354 | * return status properly. |
| 355 | * |
| 356 | * \param output_buffer Pointer to buffer to wipe. May not be NULL |
| 357 | * unless \p output_buffer_size is zero. |
| 358 | * \param status Status of function called to generate |
| 359 | * output_buffer originally |
| 360 | * \param output_buffer_size Size of output buffer. If zero, \p output_buffer |
| 361 | * could be NULL. |
| 362 | * \param output_buffer_length Length of data written to output_buffer, must be |
| 363 | * less than \p output_buffer_size |
| 364 | */ |
| 365 | 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] | 366 | size_t output_buffer_size, size_t output_buffer_length) |
| 367 | { |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 368 | size_t offset = 0; |
| 369 | |
| 370 | if (output_buffer_size == 0) { |
| 371 | /* If output_buffer_size is 0 then we have nothing to do. We must not |
| 372 | call memset because output_buffer may be NULL in this case */ |
| 373 | return; |
| 374 | } |
| 375 | |
| 376 | if (status == PSA_SUCCESS) { |
| 377 | offset = output_buffer_length; |
| 378 | } |
| 379 | |
| 380 | memset(output_buffer + offset, '!', output_buffer_size - offset); |
| 381 | } |
| 382 | |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 383 | |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 384 | |
| 385 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 386 | /****************************************************************/ |
| 387 | /* Key management */ |
| 388 | /****************************************************************/ |
| 389 | |
Valerio Setti | a9aab1a | 2023-06-19 13:39:54 +0200 | [diff] [blame] | 390 | #if defined(PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY) |
Valerio Setti | bc2b1d3 | 2023-06-19 12:15:13 +0200 | [diff] [blame] | 391 | psa_ecc_family_t mbedtls_ecc_group_to_psa(mbedtls_ecp_group_id grpid, |
| 392 | size_t *bits) |
| 393 | { |
| 394 | switch (grpid) { |
| 395 | case MBEDTLS_ECP_DP_SECP192R1: |
| 396 | *bits = 192; |
| 397 | return PSA_ECC_FAMILY_SECP_R1; |
| 398 | case MBEDTLS_ECP_DP_SECP224R1: |
| 399 | *bits = 224; |
| 400 | return PSA_ECC_FAMILY_SECP_R1; |
| 401 | case MBEDTLS_ECP_DP_SECP256R1: |
| 402 | *bits = 256; |
| 403 | return PSA_ECC_FAMILY_SECP_R1; |
| 404 | case MBEDTLS_ECP_DP_SECP384R1: |
| 405 | *bits = 384; |
| 406 | return PSA_ECC_FAMILY_SECP_R1; |
| 407 | case MBEDTLS_ECP_DP_SECP521R1: |
| 408 | *bits = 521; |
| 409 | return PSA_ECC_FAMILY_SECP_R1; |
| 410 | case MBEDTLS_ECP_DP_BP256R1: |
| 411 | *bits = 256; |
| 412 | return PSA_ECC_FAMILY_BRAINPOOL_P_R1; |
| 413 | case MBEDTLS_ECP_DP_BP384R1: |
| 414 | *bits = 384; |
| 415 | return PSA_ECC_FAMILY_BRAINPOOL_P_R1; |
| 416 | case MBEDTLS_ECP_DP_BP512R1: |
| 417 | *bits = 512; |
| 418 | return PSA_ECC_FAMILY_BRAINPOOL_P_R1; |
| 419 | case MBEDTLS_ECP_DP_CURVE25519: |
| 420 | *bits = 255; |
| 421 | return PSA_ECC_FAMILY_MONTGOMERY; |
| 422 | case MBEDTLS_ECP_DP_SECP192K1: |
| 423 | *bits = 192; |
| 424 | return PSA_ECC_FAMILY_SECP_K1; |
| 425 | case MBEDTLS_ECP_DP_SECP224K1: |
| 426 | *bits = 224; |
| 427 | return PSA_ECC_FAMILY_SECP_K1; |
| 428 | case MBEDTLS_ECP_DP_SECP256K1: |
| 429 | *bits = 256; |
| 430 | return PSA_ECC_FAMILY_SECP_K1; |
| 431 | case MBEDTLS_ECP_DP_CURVE448: |
| 432 | *bits = 448; |
| 433 | return PSA_ECC_FAMILY_MONTGOMERY; |
| 434 | default: |
| 435 | *bits = 0; |
| 436 | return 0; |
| 437 | } |
| 438 | } |
| 439 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 440 | mbedtls_ecp_group_id mbedtls_ecc_group_of_psa(psa_ecc_family_t curve, |
| 441 | size_t bits, |
| 442 | int bits_is_sloppy) |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 443 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 444 | switch (curve) { |
Paul Elliott | 8ff510a | 2020-06-02 17:19:28 +0100 | [diff] [blame] | 445 | case PSA_ECC_FAMILY_SECP_R1: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 446 | switch (bits) { |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 447 | #if defined(PSA_WANT_ECC_SECP_R1_192) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 448 | case 192: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 449 | return MBEDTLS_ECP_DP_SECP192R1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 450 | #endif |
| 451 | #if defined(PSA_WANT_ECC_SECP_R1_224) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 452 | case 224: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 453 | return MBEDTLS_ECP_DP_SECP224R1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 454 | #endif |
| 455 | #if defined(PSA_WANT_ECC_SECP_R1_256) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 456 | case 256: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 457 | return MBEDTLS_ECP_DP_SECP256R1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 458 | #endif |
| 459 | #if defined(PSA_WANT_ECC_SECP_R1_384) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 460 | case 384: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 461 | return MBEDTLS_ECP_DP_SECP384R1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 462 | #endif |
| 463 | #if defined(PSA_WANT_ECC_SECP_R1_521) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 464 | case 521: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 465 | return MBEDTLS_ECP_DP_SECP521R1; |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 466 | case 528: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 467 | if (bits_is_sloppy) { |
| 468 | return MBEDTLS_ECP_DP_SECP521R1; |
| 469 | } |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 470 | break; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 471 | #endif |
Gilles Peskine | 228abc5 | 2019-12-03 17:24:19 +0100 | [diff] [blame] | 472 | } |
| 473 | break; |
Gilles Peskine | 228abc5 | 2019-12-03 17:24:19 +0100 | [diff] [blame] | 474 | |
Paul Elliott | 8ff510a | 2020-06-02 17:19:28 +0100 | [diff] [blame] | 475 | case PSA_ECC_FAMILY_BRAINPOOL_P_R1: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 476 | switch (bits) { |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 477 | #if defined(PSA_WANT_ECC_BRAINPOOL_P_R1_256) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 478 | case 256: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 479 | return MBEDTLS_ECP_DP_BP256R1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 480 | #endif |
| 481 | #if defined(PSA_WANT_ECC_BRAINPOOL_P_R1_384) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 482 | case 384: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 483 | return MBEDTLS_ECP_DP_BP384R1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 484 | #endif |
| 485 | #if defined(PSA_WANT_ECC_BRAINPOOL_P_R1_512) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 486 | case 512: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 487 | return MBEDTLS_ECP_DP_BP512R1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 488 | #endif |
Gilles Peskine | 228abc5 | 2019-12-03 17:24:19 +0100 | [diff] [blame] | 489 | } |
| 490 | break; |
Gilles Peskine | 228abc5 | 2019-12-03 17:24:19 +0100 | [diff] [blame] | 491 | |
Paul Elliott | 8ff510a | 2020-06-02 17:19:28 +0100 | [diff] [blame] | 492 | case PSA_ECC_FAMILY_MONTGOMERY: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 493 | switch (bits) { |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 494 | #if defined(PSA_WANT_ECC_MONTGOMERY_255) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 495 | case 255: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 496 | return MBEDTLS_ECP_DP_CURVE25519; |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 497 | case 256: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 498 | if (bits_is_sloppy) { |
| 499 | return MBEDTLS_ECP_DP_CURVE25519; |
| 500 | } |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 501 | break; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 502 | #endif |
| 503 | #if defined(PSA_WANT_ECC_MONTGOMERY_448) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 504 | case 448: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 505 | return MBEDTLS_ECP_DP_CURVE448; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 506 | #endif |
Gilles Peskine | 228abc5 | 2019-12-03 17:24:19 +0100 | [diff] [blame] | 507 | } |
| 508 | break; |
Gilles Peskine | 228abc5 | 2019-12-03 17:24:19 +0100 | [diff] [blame] | 509 | |
Paul Elliott | 8ff510a | 2020-06-02 17:19:28 +0100 | [diff] [blame] | 510 | case PSA_ECC_FAMILY_SECP_K1: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 511 | switch (bits) { |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 512 | #if defined(PSA_WANT_ECC_SECP_K1_192) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 513 | case 192: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 514 | return MBEDTLS_ECP_DP_SECP192K1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 515 | #endif |
| 516 | #if defined(PSA_WANT_ECC_SECP_K1_224) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 517 | case 224: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 518 | return MBEDTLS_ECP_DP_SECP224K1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 519 | #endif |
| 520 | #if defined(PSA_WANT_ECC_SECP_K1_256) |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 521 | case 256: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 522 | return MBEDTLS_ECP_DP_SECP256K1; |
Gilles Peskine | a1684f4 | 2021-03-23 13:12:34 +0100 | [diff] [blame] | 523 | #endif |
Gilles Peskine | 228abc5 | 2019-12-03 17:24:19 +0100 | [diff] [blame] | 524 | } |
| 525 | break; |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 526 | } |
Gilles Peskine | 2fa6b5f | 2021-01-27 15:44:45 +0100 | [diff] [blame] | 527 | |
Gilles Peskine | 71f45ba | 2021-03-23 14:17:55 +0100 | [diff] [blame] | 528 | (void) bits_is_sloppy; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 529 | return MBEDTLS_ECP_DP_NONE; |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 530 | } |
Valerio Setti | a9aab1a | 2023-06-19 13:39:54 +0200 | [diff] [blame] | 531 | #endif /* PSA_WANT_KEY_TYPE_ECC_PUBLIC_KEY */ |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 532 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 533 | psa_status_t psa_validate_unstructured_key_bit_size(psa_key_type_t type, |
| 534 | size_t bits) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 535 | { |
| 536 | /* Check that the bit size is acceptable for the key type */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 537 | switch (type) { |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 538 | case PSA_KEY_TYPE_RAW_DATA: |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 539 | case PSA_KEY_TYPE_HMAC: |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 540 | case PSA_KEY_TYPE_DERIVE: |
Neil Armstrong | 4b5710f | 2022-05-25 11:30:27 +0200 | [diff] [blame] | 541 | case PSA_KEY_TYPE_PASSWORD: |
| 542 | case PSA_KEY_TYPE_PASSWORD_HASH: |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 543 | break; |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 544 | #if defined(PSA_WANT_KEY_TYPE_AES) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 545 | case PSA_KEY_TYPE_AES: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 546 | if (bits != 128 && bits != 192 && bits != 256) { |
| 547 | return PSA_ERROR_INVALID_ARGUMENT; |
| 548 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 549 | break; |
| 550 | #endif |
Gilles Peskine | 6c12a1e | 2021-09-21 11:59:39 +0200 | [diff] [blame] | 551 | #if defined(PSA_WANT_KEY_TYPE_ARIA) |
| 552 | case PSA_KEY_TYPE_ARIA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 553 | if (bits != 128 && bits != 192 && bits != 256) { |
| 554 | return PSA_ERROR_INVALID_ARGUMENT; |
| 555 | } |
Gilles Peskine | 6c12a1e | 2021-09-21 11:59:39 +0200 | [diff] [blame] | 556 | break; |
| 557 | #endif |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 558 | #if defined(PSA_WANT_KEY_TYPE_CAMELLIA) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 559 | case PSA_KEY_TYPE_CAMELLIA: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 560 | if (bits != 128 && bits != 192 && bits != 256) { |
| 561 | return PSA_ERROR_INVALID_ARGUMENT; |
| 562 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 563 | break; |
| 564 | #endif |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 565 | #if defined(PSA_WANT_KEY_TYPE_DES) |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 566 | case PSA_KEY_TYPE_DES: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 567 | if (bits != 64 && bits != 128 && bits != 192) { |
| 568 | return PSA_ERROR_INVALID_ARGUMENT; |
| 569 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 570 | break; |
| 571 | #endif |
Ronald Cron | 1f0db80 | 2021-03-12 09:59:30 +0100 | [diff] [blame] | 572 | #if defined(PSA_WANT_KEY_TYPE_CHACHA20) |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 573 | case PSA_KEY_TYPE_CHACHA20: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 574 | if (bits != 256) { |
| 575 | return PSA_ERROR_INVALID_ARGUMENT; |
| 576 | } |
Gilles Peskine | 26869f2 | 2019-05-06 15:25:00 +0200 | [diff] [blame] | 577 | break; |
| 578 | #endif |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 579 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 580 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 581 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 582 | if (bits % 8 != 0) { |
| 583 | return PSA_ERROR_INVALID_ARGUMENT; |
| 584 | } |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 585 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 586 | return PSA_SUCCESS; |
Gilles Peskine | 0ff4b0f | 2018-06-19 21:31:50 +0200 | [diff] [blame] | 587 | } |
| 588 | |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 589 | /** 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] | 590 | * |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 591 | * Upon successful return of this function, the behavior of #PSA_MAC_LENGTH |
| 592 | * 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] | 593 | * |
| 594 | * \param[in] algorithm The specific MAC algorithm (can be wildcard). |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 595 | * \param[in] key_type The key type of the key to be used with the |
| 596 | * \p algorithm. |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 597 | * |
| 598 | * \retval #PSA_SUCCESS |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 599 | * The \p key_type is valid for use with the \p algorithm |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 600 | * \retval #PSA_ERROR_INVALID_ARGUMENT |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 601 | * 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] | 602 | */ |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 603 | MBEDTLS_STATIC_TESTABLE psa_status_t psa_mac_key_can_do( |
Steven Cooreman | 58c94d3 | 2021-03-02 21:31:17 +0100 | [diff] [blame] | 604 | psa_algorithm_t algorithm, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 605 | psa_key_type_t key_type) |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 606 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 607 | if (PSA_ALG_IS_HMAC(algorithm)) { |
| 608 | if (key_type == PSA_KEY_TYPE_HMAC) { |
| 609 | return PSA_SUCCESS; |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 610 | } |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 611 | } |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 612 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 613 | if (PSA_ALG_IS_BLOCK_CIPHER_MAC(algorithm)) { |
| 614 | /* Check that we're calling PSA_BLOCK_CIPHER_BLOCK_LENGTH with a cipher |
| 615 | * key. */ |
| 616 | if ((key_type & PSA_KEY_TYPE_CATEGORY_MASK) == |
| 617 | PSA_KEY_TYPE_CATEGORY_SYMMETRIC) { |
| 618 | /* PSA_BLOCK_CIPHER_BLOCK_LENGTH returns 1 for stream ciphers and |
| 619 | * the block length (larger than 1) for block ciphers. */ |
| 620 | if (PSA_BLOCK_CIPHER_BLOCK_LENGTH(key_type) > 1) { |
| 621 | return PSA_SUCCESS; |
| 622 | } |
| 623 | } |
| 624 | } |
| 625 | |
| 626 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 627 | } |
| 628 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 629 | psa_status_t psa_allocate_buffer_to_slot(psa_key_slot_t *slot, |
| 630 | size_t buffer_length) |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 631 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 632 | if (slot->key.data != NULL) { |
| 633 | return PSA_ERROR_ALREADY_EXISTS; |
| 634 | } |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 635 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 636 | slot->key.data = mbedtls_calloc(1, buffer_length); |
| 637 | if (slot->key.data == NULL) { |
| 638 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 639 | } |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 640 | |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 641 | slot->key.bytes = buffer_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 642 | return PSA_SUCCESS; |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 643 | } |
| 644 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 645 | psa_status_t psa_copy_key_material_into_slot(psa_key_slot_t *slot, |
| 646 | const uint8_t *data, |
| 647 | size_t data_length) |
Steven Cooreman | f7cebd4 | 2020-10-13 20:27:40 +0200 | [diff] [blame] | 648 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 649 | psa_status_t status = psa_allocate_buffer_to_slot(slot, |
| 650 | data_length); |
| 651 | if (status != PSA_SUCCESS) { |
| 652 | return status; |
| 653 | } |
Steven Cooreman | f7cebd4 | 2020-10-13 20:27:40 +0200 | [diff] [blame] | 654 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 655 | memcpy(slot->key.data, data, data_length); |
| 656 | return PSA_SUCCESS; |
Steven Cooreman | f7cebd4 | 2020-10-13 20:27:40 +0200 | [diff] [blame] | 657 | } |
| 658 | |
Ronald Cron | a0fe59f | 2020-11-29 11:14:53 +0100 | [diff] [blame] | 659 | psa_status_t psa_import_key_into_slot( |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 660 | const psa_key_attributes_t *attributes, |
| 661 | const uint8_t *data, size_t data_length, |
| 662 | uint8_t *key_buffer, size_t key_buffer_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 663 | size_t *key_buffer_length, size_t *bits) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 664 | { |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 665 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 666 | psa_key_type_t type = attributes->core.type; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 667 | |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 668 | /* zero-length keys are never supported. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 669 | if (data_length == 0) { |
| 670 | return PSA_ERROR_NOT_SUPPORTED; |
| 671 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 672 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 673 | if (key_type_is_raw_bytes(type)) { |
| 674 | *bits = PSA_BYTES_TO_BITS(data_length); |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 675 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 676 | status = psa_validate_unstructured_key_bit_size(attributes->core.type, |
| 677 | *bits); |
| 678 | if (status != PSA_SUCCESS) { |
| 679 | return status; |
| 680 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 681 | |
Ronald Cron | dd04d42 | 2020-11-28 15:14:42 +0100 | [diff] [blame] | 682 | /* Copy the key material. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 683 | memcpy(key_buffer, data, data_length); |
Ronald Cron | dd04d42 | 2020-11-28 15:14:42 +0100 | [diff] [blame] | 684 | *key_buffer_length = data_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 685 | (void) key_buffer_size; |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 686 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 687 | return PSA_SUCCESS; |
| 688 | } else if (PSA_KEY_TYPE_IS_ASYMMETRIC(type)) { |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 689 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT) || \ |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 690 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 691 | if (PSA_KEY_TYPE_IS_DH(type)) { |
Przemek Stekiel | d1cf1ba | 2023-04-27 12:04:21 +0200 | [diff] [blame] | 692 | if (psa_is_dh_key_size_valid(PSA_BYTES_TO_BITS(data_length)) == 0) { |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 693 | return PSA_ERROR_INVALID_ARGUMENT; |
| 694 | } |
Przemek Stekiel | 33c91eb | 2023-05-30 15:16:35 +0200 | [diff] [blame] | 695 | return mbedtls_psa_ffdh_import_key(attributes, |
| 696 | data, data_length, |
| 697 | key_buffer, key_buffer_size, |
| 698 | key_buffer_length, |
| 699 | bits); |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 700 | } |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 701 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_IMPORT) || |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 702 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) */ |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 703 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_IMPORT) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 704 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) |
| 705 | if (PSA_KEY_TYPE_IS_ECC(type)) { |
| 706 | return mbedtls_psa_ecp_import_key(attributes, |
| 707 | data, data_length, |
| 708 | key_buffer, key_buffer_size, |
| 709 | key_buffer_length, |
| 710 | bits); |
Steven Cooreman | 40120f6 | 2020-10-29 11:42:22 +0100 | [diff] [blame] | 711 | } |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 712 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_IMPORT) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 713 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) */ |
Valerio Setti | fe47890 | 2023-07-25 12:27:19 +0200 | [diff] [blame] | 714 | #if (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && \ |
| 715 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 716 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) |
| 717 | if (PSA_KEY_TYPE_IS_RSA(type)) { |
| 718 | return mbedtls_psa_rsa_import_key(attributes, |
| 719 | data, data_length, |
| 720 | key_buffer, key_buffer_size, |
| 721 | key_buffer_length, |
| 722 | bits); |
Steven Cooreman | 3ea0ce4 | 2020-10-23 11:37:05 +0200 | [diff] [blame] | 723 | } |
Valerio Setti | fe47890 | 2023-07-25 12:27:19 +0200 | [diff] [blame] | 724 | #endif /* (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && |
| 725 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 726 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */ |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 727 | } |
Steven Cooreman | 40120f6 | 2020-10-29 11:42:22 +0100 | [diff] [blame] | 728 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 729 | return PSA_ERROR_NOT_SUPPORTED; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 730 | } |
| 731 | |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 732 | /** Calculate the intersection of two algorithm usage policies. |
| 733 | * |
| 734 | * Return 0 (which allows no operation) on incompatibility. |
| 735 | */ |
| 736 | static psa_algorithm_t psa_key_policy_algorithm_intersection( |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 737 | psa_key_type_t key_type, |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 738 | psa_algorithm_t alg1, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 739 | psa_algorithm_t alg2) |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 740 | { |
Gilles Peskine | 549ea86 | 2019-05-22 11:45:59 +0200 | [diff] [blame] | 741 | /* Common case: both sides actually specify the same policy. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 742 | if (alg1 == alg2) { |
| 743 | return alg1; |
| 744 | } |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 745 | /* If the policies are from the same hash-and-sign family, check |
| 746 | * 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] | 747 | if (PSA_ALG_IS_SIGN_HASH(alg1) && |
| 748 | PSA_ALG_IS_SIGN_HASH(alg2) && |
| 749 | (alg1 & ~PSA_ALG_HASH_MASK) == (alg2 & ~PSA_ALG_HASH_MASK)) { |
| 750 | if (PSA_ALG_SIGN_GET_HASH(alg1) == PSA_ALG_ANY_HASH) { |
| 751 | return alg2; |
| 752 | } |
| 753 | if (PSA_ALG_SIGN_GET_HASH(alg2) == PSA_ALG_ANY_HASH) { |
| 754 | return alg1; |
| 755 | } |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 756 | } |
| 757 | /* If the policies are from the same AEAD family, check whether |
Steven Cooreman | 7de9e2d | 2021-02-22 17:05:56 +0100 | [diff] [blame] | 758 | * one of them is a minimum-tag-length wildcard. Calculate the most |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 759 | * restrictive tag length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 760 | if (PSA_ALG_IS_AEAD(alg1) && PSA_ALG_IS_AEAD(alg2) && |
| 761 | (PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg1, 0) == |
| 762 | PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg2, 0))) { |
| 763 | size_t alg1_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg1); |
| 764 | size_t alg2_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg2); |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 765 | size_t restricted_len = alg1_len > alg2_len ? alg1_len : alg2_len; |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 766 | |
Steven Cooreman | 7de9e2d | 2021-02-22 17:05:56 +0100 | [diff] [blame] | 767 | /* If both are wildcards, return most restrictive wildcard */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 768 | if (((alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 769 | ((alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0)) { |
| 770 | return PSA_ALG_AEAD_WITH_AT_LEAST_THIS_LENGTH_TAG( |
| 771 | alg1, restricted_len); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 772 | } |
| 773 | /* If only one is a wildcard, return specific algorithm if compatible. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 774 | if (((alg1 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 775 | (alg1_len <= alg2_len)) { |
| 776 | return alg2; |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 777 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 778 | if (((alg2 & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 779 | (alg2_len <= alg1_len)) { |
| 780 | return alg1; |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 781 | } |
| 782 | } |
| 783 | /* If the policies are from the same MAC family, check whether one |
| 784 | * of them is a minimum-MAC-length policy. Calculate the most |
| 785 | * restrictive tag length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 786 | if (PSA_ALG_IS_MAC(alg1) && PSA_ALG_IS_MAC(alg2) && |
| 787 | (PSA_ALG_FULL_LENGTH_MAC(alg1) == |
| 788 | PSA_ALG_FULL_LENGTH_MAC(alg2))) { |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 789 | /* Validate the combination of key type and algorithm. Since the base |
| 790 | * 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] | 791 | if (PSA_SUCCESS != psa_mac_key_can_do(alg1, key_type)) { |
| 792 | return 0; |
| 793 | } |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 794 | |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 795 | /* Get the (exact or at-least) output lengths for both sides of the |
| 796 | * requested intersection. None of the currently supported algorithms |
| 797 | * have an output length dependent on the actual key size, so setting it |
| 798 | * to a bogus value of 0 is currently OK. |
| 799 | * |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 800 | * Note that for at-least-this-length wildcard algorithms, the output |
| 801 | * length is set to the shortest allowed length, which allows us to |
| 802 | * calculate the most restrictive tag length for the intersection. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 803 | size_t alg1_len = PSA_MAC_LENGTH(key_type, 0, alg1); |
| 804 | size_t alg2_len = PSA_MAC_LENGTH(key_type, 0, alg2); |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 805 | size_t restricted_len = alg1_len > alg2_len ? alg1_len : alg2_len; |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 806 | |
Steven Cooreman | a1d8322 | 2021-02-25 10:20:29 +0100 | [diff] [blame] | 807 | /* If both are wildcards, return most restrictive wildcard */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 808 | if (((alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) && |
| 809 | ((alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0)) { |
| 810 | return PSA_ALG_AT_LEAST_THIS_LENGTH_MAC(alg1, restricted_len); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 811 | } |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 812 | |
| 813 | /* If only one is an at-least-this-length policy, the intersection would |
| 814 | * be the other (fixed-length) policy as long as said fixed length is |
| 815 | * equal to or larger than the shortest allowed length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 816 | if ((alg1 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) { |
| 817 | return (alg1_len <= alg2_len) ? alg2 : 0; |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 818 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 819 | if ((alg2 & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) { |
| 820 | return (alg2_len <= alg1_len) ? alg1 : 0; |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 821 | } |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 822 | |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 823 | /* If none of them are wildcards, check whether they define the same tag |
| 824 | * length. This is still possible here when one is default-length and |
| 825 | * the other specific-length. Ensure to always return the |
| 826 | * specific-length version for the intersection. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 827 | if (alg1_len == alg2_len) { |
| 828 | return PSA_ALG_TRUNCATED_MAC(alg1, alg1_len); |
| 829 | } |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 830 | } |
| 831 | /* If the policies are incompatible, allow nothing. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 832 | return 0; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 833 | } |
| 834 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 835 | static int psa_key_algorithm_permits(psa_key_type_t key_type, |
| 836 | psa_algorithm_t policy_alg, |
| 837 | psa_algorithm_t requested_alg) |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 838 | { |
Gilles Peskine | 549ea86 | 2019-05-22 11:45:59 +0200 | [diff] [blame] | 839 | /* Common case: the policy only allows requested_alg. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 840 | if (requested_alg == policy_alg) { |
| 841 | return 1; |
| 842 | } |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 843 | /* If policy_alg is a hash-and-sign with a wildcard for the hash, |
| 844 | * and requested_alg is the same hash-and-sign family with any hash, |
| 845 | * then requested_alg is compliant with policy_alg. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 846 | if (PSA_ALG_IS_SIGN_HASH(requested_alg) && |
| 847 | PSA_ALG_SIGN_GET_HASH(policy_alg) == PSA_ALG_ANY_HASH) { |
| 848 | return (policy_alg & ~PSA_ALG_HASH_MASK) == |
| 849 | (requested_alg & ~PSA_ALG_HASH_MASK); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 850 | } |
| 851 | /* If policy_alg is a wildcard AEAD algorithm of the same base as |
| 852 | * the requested algorithm, check the requested tag length to be |
| 853 | * equal-length or longer than the wildcard-specified length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 854 | if (PSA_ALG_IS_AEAD(policy_alg) && |
| 855 | PSA_ALG_IS_AEAD(requested_alg) && |
| 856 | (PSA_ALG_AEAD_WITH_SHORTENED_TAG(policy_alg, 0) == |
| 857 | PSA_ALG_AEAD_WITH_SHORTENED_TAG(requested_alg, 0)) && |
| 858 | ((policy_alg & PSA_ALG_AEAD_AT_LEAST_THIS_LENGTH_FLAG) != 0)) { |
| 859 | return PSA_ALG_AEAD_GET_TAG_LENGTH(policy_alg) <= |
| 860 | PSA_ALG_AEAD_GET_TAG_LENGTH(requested_alg); |
Steven Cooreman | 0348802 | 2021-02-18 12:07:20 +0100 | [diff] [blame] | 861 | } |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 862 | /* If policy_alg is a MAC algorithm of the same base as the requested |
| 863 | * algorithm, check whether their MAC lengths are compatible. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 864 | if (PSA_ALG_IS_MAC(policy_alg) && |
| 865 | PSA_ALG_IS_MAC(requested_alg) && |
| 866 | (PSA_ALG_FULL_LENGTH_MAC(policy_alg) == |
| 867 | PSA_ALG_FULL_LENGTH_MAC(requested_alg))) { |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 868 | /* Validate the combination of key type and algorithm. Since the policy |
| 869 | * and requested algorithms are the same, we only need this once. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 870 | if (PSA_SUCCESS != psa_mac_key_can_do(policy_alg, key_type)) { |
| 871 | return 0; |
| 872 | } |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 873 | |
Steven Cooreman | 31a876d | 2021-03-03 20:47:40 +0100 | [diff] [blame] | 874 | /* Get both the requested output length for the algorithm which is to be |
| 875 | * verified, and the default output length for the base algorithm. |
| 876 | * Note that none of the currently supported algorithms have an output |
| 877 | * length dependent on actual key size, so setting it to a bogus value |
| 878 | * of 0 is currently OK. */ |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 879 | size_t requested_output_length = PSA_MAC_LENGTH( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 880 | key_type, 0, requested_alg); |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 881 | size_t default_output_length = PSA_MAC_LENGTH( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 882 | key_type, 0, |
| 883 | PSA_ALG_FULL_LENGTH_MAC(requested_alg)); |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 884 | |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 885 | /* If the policy is default-length, only allow an algorithm with |
| 886 | * a declared exact-length matching the default. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 887 | if (PSA_MAC_TRUNCATED_LENGTH(policy_alg) == 0) { |
| 888 | return requested_output_length == default_output_length; |
| 889 | } |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 890 | |
| 891 | /* If the requested algorithm is default-length, allow it if the policy |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 892 | * length exactly matches the default length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 893 | if (PSA_MAC_TRUNCATED_LENGTH(requested_alg) == 0 && |
| 894 | PSA_MAC_TRUNCATED_LENGTH(policy_alg) == default_output_length) { |
| 895 | return 1; |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 896 | } |
| 897 | |
Steven Cooreman | cd64093 | 2021-03-08 12:00:27 +0100 | [diff] [blame] | 898 | /* If policy_alg is an at-least-this-length wildcard MAC algorithm, |
| 899 | * check for the requested MAC length to be equal to or longer than the |
| 900 | * minimum allowed length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 901 | if ((policy_alg & PSA_ALG_MAC_AT_LEAST_THIS_LENGTH_FLAG) != 0) { |
| 902 | return PSA_MAC_TRUNCATED_LENGTH(policy_alg) <= |
| 903 | requested_output_length; |
Steven Cooreman | 5ad4bf7 | 2021-03-02 15:11:57 +0100 | [diff] [blame] | 904 | } |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 905 | } |
Steven Cooreman | ce48e85 | 2020-10-05 16:02:45 +0200 | [diff] [blame] | 906 | /* 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] | 907 | * a key derivation with that key agreement should also be allowed. This |
| 908 | * behaviour is expected to be defined in a future specification version. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 909 | if (PSA_ALG_IS_RAW_KEY_AGREEMENT(policy_alg) && |
| 910 | PSA_ALG_IS_KEY_AGREEMENT(requested_alg)) { |
| 911 | return PSA_ALG_KEY_AGREEMENT_GET_BASE(requested_alg) == |
| 912 | policy_alg; |
Steven Cooreman | ce48e85 | 2020-10-05 16:02:45 +0200 | [diff] [blame] | 913 | } |
Steven Cooreman | b3ce815 | 2021-02-18 12:03:50 +0100 | [diff] [blame] | 914 | /* If it isn't explicitly permitted, it's forbidden. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 915 | return 0; |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 916 | } |
| 917 | |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 918 | /** Test whether a policy permits an algorithm. |
| 919 | * |
| 920 | * The caller must test usage flags separately. |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 921 | * |
Steven Cooreman | 5a17267 | 2021-03-02 21:27:42 +0100 | [diff] [blame] | 922 | * \note This function requires providing the key type for which the policy is |
| 923 | * being validated, since some algorithm policy definitions (e.g. MAC) |
| 924 | * have different properties depending on what kind of cipher it is |
| 925 | * combined with. |
| 926 | * |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 927 | * \retval PSA_SUCCESS When \p alg is a specific algorithm |
| 928 | * allowed by the \p policy. |
| 929 | * \retval PSA_ERROR_INVALID_ARGUMENT When \p alg is not a specific algorithm |
| 930 | * \retval PSA_ERROR_NOT_PERMITTED When \p alg is a specific algorithm, but |
| 931 | * the \p policy does not allow it. |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 932 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 933 | static psa_status_t psa_key_policy_permits(const psa_key_policy_t *policy, |
| 934 | psa_key_type_t key_type, |
| 935 | psa_algorithm_t alg) |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 936 | { |
Steven Cooreman | d788fab | 2021-02-25 11:29:17 +0100 | [diff] [blame] | 937 | /* '0' is not a valid algorithm */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 938 | if (alg == 0) { |
| 939 | return PSA_ERROR_INVALID_ARGUMENT; |
| 940 | } |
Steven Cooreman | d788fab | 2021-02-25 11:29:17 +0100 | [diff] [blame] | 941 | |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 942 | /* A requested algorithm cannot be a wildcard. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 943 | if (PSA_ALG_IS_WILDCARD(alg)) { |
| 944 | return PSA_ERROR_INVALID_ARGUMENT; |
| 945 | } |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 946 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 947 | if (psa_key_algorithm_permits(key_type, policy->alg, alg) || |
| 948 | psa_key_algorithm_permits(key_type, policy->alg2, alg)) { |
| 949 | return PSA_SUCCESS; |
| 950 | } else { |
| 951 | return PSA_ERROR_NOT_PERMITTED; |
| 952 | } |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 953 | } |
| 954 | |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 955 | /** Restrict a key policy based on a constraint. |
| 956 | * |
Steven Cooreman | 5a17267 | 2021-03-02 21:27:42 +0100 | [diff] [blame] | 957 | * \note This function requires providing the key type for which the policy is |
| 958 | * being restricted, since some algorithm policy definitions (e.g. MAC) |
| 959 | * have different properties depending on what kind of cipher it is |
| 960 | * combined with. |
| 961 | * |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 962 | * \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] | 963 | * \param[in,out] policy The policy to restrict. |
| 964 | * \param[in] constraint The policy constraint to apply. |
| 965 | * |
| 966 | * \retval #PSA_SUCCESS |
| 967 | * \c *policy contains the intersection of the original value of |
| 968 | * \c *policy and \c *constraint. |
| 969 | * \retval #PSA_ERROR_INVALID_ARGUMENT |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 970 | * \c key_type, \c *policy and \c *constraint are incompatible. |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 971 | * \c *policy is unchanged. |
| 972 | */ |
| 973 | static psa_status_t psa_restrict_key_policy( |
Steven Cooreman | 1ac5ce3 | 2021-03-02 16:34:49 +0100 | [diff] [blame] | 974 | psa_key_type_t key_type, |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 975 | psa_key_policy_t *policy, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 976 | const psa_key_policy_t *constraint) |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 977 | { |
| 978 | psa_algorithm_t intersection_alg = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 979 | psa_key_policy_algorithm_intersection(key_type, policy->alg, |
| 980 | constraint->alg); |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 981 | psa_algorithm_t intersection_alg2 = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 982 | psa_key_policy_algorithm_intersection(key_type, policy->alg2, |
| 983 | constraint->alg2); |
| 984 | if (intersection_alg == 0 && policy->alg != 0 && constraint->alg != 0) { |
| 985 | return PSA_ERROR_INVALID_ARGUMENT; |
| 986 | } |
| 987 | if (intersection_alg2 == 0 && policy->alg2 != 0 && constraint->alg2 != 0) { |
| 988 | return PSA_ERROR_INVALID_ARGUMENT; |
| 989 | } |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 990 | policy->usage &= constraint->usage; |
| 991 | policy->alg = intersection_alg; |
Gilles Peskine | d6f371b | 2019-05-10 19:33:38 +0200 | [diff] [blame] | 992 | policy->alg2 = intersection_alg2; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 993 | return PSA_SUCCESS; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 994 | } |
| 995 | |
Przemek Stekiel | 061f694 | 2022-11-30 10:51:35 +0100 | [diff] [blame] | 996 | /** Get the description of a key given its identifier and policy constraints |
| 997 | * and lock it. |
| 998 | * |
| 999 | * The key must have allow all the usage flags set in \p usage. If \p alg is |
| 1000 | * nonzero, the key must allow operations with this algorithm. If \p alg is |
| 1001 | * zero, the algorithm is not checked. |
| 1002 | * |
| 1003 | * In case of a persistent key, the function loads the description of the key |
| 1004 | * into a key slot if not already done. |
| 1005 | * |
| 1006 | * On success, the returned key slot is locked. It is the responsibility of |
| 1007 | * the caller to unlock the key slot when it does not access it anymore. |
| 1008 | */ |
| 1009 | static psa_status_t psa_get_and_lock_key_slot_with_policy( |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1010 | mbedtls_svc_key_id_t key, |
| 1011 | psa_key_slot_t **p_slot, |
| 1012 | psa_key_usage_t usage, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1013 | psa_algorithm_t alg) |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1014 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1015 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 1016 | psa_key_slot_t *slot = NULL; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1017 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1018 | status = psa_get_and_lock_key_slot(key, p_slot); |
| 1019 | if (status != PSA_SUCCESS) { |
| 1020 | return status; |
| 1021 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1022 | slot = *p_slot; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1023 | |
| 1024 | /* Enforce that usage policy for the key slot contains all the flags |
| 1025 | * required by the usage parameter. There is one exception: public |
| 1026 | * keys can always be exported, so we treat public key objects as |
| 1027 | * if they had the export flag. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1028 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type)) { |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1029 | usage &= ~PSA_KEY_USAGE_EXPORT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1030 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1031 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1032 | if ((slot->attr.policy.usage & usage) != usage) { |
Steven Cooreman | 328f11c | 2021-03-02 11:44:51 +0100 | [diff] [blame] | 1033 | status = PSA_ERROR_NOT_PERMITTED; |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1034 | goto error; |
Steven Cooreman | 328f11c | 2021-03-02 11:44:51 +0100 | [diff] [blame] | 1035 | } |
Gilles Peskine | 30f77cd | 2019-01-14 16:06:39 +0100 | [diff] [blame] | 1036 | |
Shaun Case | 8b0ecbc | 2021-12-20 21:14:10 -0800 | [diff] [blame] | 1037 | /* Enforce that the usage policy permits the requested algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1038 | if (alg != 0) { |
| 1039 | status = psa_key_policy_permits(&slot->attr.policy, |
| 1040 | slot->attr.type, |
| 1041 | alg); |
| 1042 | if (status != PSA_SUCCESS) { |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1043 | goto error; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1044 | } |
Steven Cooreman | 7e39f05 | 2021-02-23 14:18:32 +0100 | [diff] [blame] | 1045 | } |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1046 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1047 | return PSA_SUCCESS; |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1048 | |
| 1049 | error: |
| 1050 | *p_slot = NULL; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1051 | psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1052 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1053 | return status; |
Darryl Green | 06fd18d | 2018-07-16 11:21:11 +0100 | [diff] [blame] | 1054 | } |
Darryl Green | 940d72c | 2018-07-13 13:18:51 +0100 | [diff] [blame] | 1055 | |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1056 | /** Get a key slot containing a transparent key and lock it. |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1057 | * |
| 1058 | * 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] | 1059 | * available, as opposed to a key in a secure element and/or to be used |
| 1060 | * by a secure element. |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1061 | * |
Ronald Cron | ddae0f5 | 2021-08-24 15:39:44 +0200 | [diff] [blame] | 1062 | * This is a temporary function that may be used instead of |
| 1063 | * psa_get_and_lock_key_slot_with_policy() when there is no opaque key support |
| 1064 | * for a cryptographic operation. |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1065 | * |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1066 | * On success, the returned key slot is locked. It is the responsibility of the |
| 1067 | * caller to unlock the key slot when it does not access it anymore. |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1068 | */ |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1069 | static psa_status_t psa_get_and_lock_transparent_key_slot_with_policy( |
| 1070 | mbedtls_svc_key_id_t key, |
| 1071 | psa_key_slot_t **p_slot, |
| 1072 | psa_key_usage_t usage, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1073 | psa_algorithm_t alg) |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1074 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1075 | psa_status_t status = psa_get_and_lock_key_slot_with_policy(key, p_slot, |
| 1076 | usage, alg); |
| 1077 | if (status != PSA_SUCCESS) { |
| 1078 | return status; |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1079 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1080 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1081 | if (psa_key_lifetime_is_external((*p_slot)->attr.lifetime)) { |
| 1082 | psa_unlock_key_slot(*p_slot); |
| 1083 | *p_slot = NULL; |
| 1084 | return PSA_ERROR_NOT_SUPPORTED; |
| 1085 | } |
| 1086 | |
| 1087 | return PSA_SUCCESS; |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1088 | } |
Gilles Peskine | 28f8f30 | 2019-07-24 13:30:31 +0200 | [diff] [blame] | 1089 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1090 | 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] | 1091 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1092 | if (slot->key.data != NULL) { |
Tom Cosgrove | 52f7e18 | 2023-08-01 09:08:48 +0100 | [diff] [blame] | 1093 | mbedtls_zeroize_and_free(slot->key.data, slot->key.bytes); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1094 | } |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1095 | |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1096 | slot->key.data = NULL; |
| 1097 | slot->key.bytes = 0; |
Darryl Green | 40225ba | 2018-11-15 14:48:15 +0000 | [diff] [blame] | 1098 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1099 | return PSA_SUCCESS; |
Darryl Green | 40225ba | 2018-11-15 14:48:15 +0000 | [diff] [blame] | 1100 | } |
| 1101 | |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1102 | /** Completely wipe a slot in memory, including its policy. |
| 1103 | * Persistent storage is not affected. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1104 | psa_status_t psa_wipe_key_slot(psa_key_slot_t *slot) |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1105 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1106 | psa_status_t status = psa_remove_key_data_from_memory(slot); |
Ronald Cron | ddd3d05 | 2020-10-30 14:07:07 +0100 | [diff] [blame] | 1107 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1108 | /* |
| 1109 | * As the return error code may not be handled in case of multiple errors, |
| 1110 | * do our best to report an unexpected lock counter. Assert with |
| 1111 | * MBEDTLS_TEST_HOOK_TEST_ASSERT that the lock counter is equal to one: |
| 1112 | * if the MBEDTLS_TEST_HOOKS configuration option is enabled and the |
| 1113 | * function is called as part of the execution of a test suite, the |
| 1114 | * execution of the test suite is stopped in error if the assertion fails. |
| 1115 | */ |
| 1116 | if (slot->lock_count != 1) { |
| 1117 | MBEDTLS_TEST_HOOK_TEST_ASSERT(slot->lock_count == 1); |
Ronald Cron | ddd3d05 | 2020-10-30 14:07:07 +0100 | [diff] [blame] | 1118 | status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1119 | } |
| 1120 | |
Gilles Peskine | 3f7cd62 | 2019-08-13 15:01:08 +0200 | [diff] [blame] | 1121 | /* Multipart operations may still be using the key. This is safe |
| 1122 | * because all multipart operation objects are independent from |
| 1123 | * the key slot: if they need to access the key after the setup |
| 1124 | * phase, they have a copy of the key. Note that this means that |
| 1125 | * key material can linger until all operations are completed. */ |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1126 | /* At this point, key material and other type-specific content has |
| 1127 | * been wiped. Clear remaining metadata. We can call memset and not |
| 1128 | * zeroize because the metadata is not particularly sensitive. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1129 | memset(slot, 0, sizeof(*slot)); |
| 1130 | return status; |
Gilles Peskine | f77ed1f | 2018-12-03 11:58:46 +0100 | [diff] [blame] | 1131 | } |
| 1132 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1133 | psa_status_t psa_destroy_key(mbedtls_svc_key_id_t key) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1134 | { |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 1135 | psa_key_slot_t *slot; |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1136 | psa_status_t status; /* status of the last operation */ |
| 1137 | psa_status_t overall_status = PSA_SUCCESS; |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1138 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
| 1139 | psa_se_drv_table_entry_t *driver; |
| 1140 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1141 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1142 | if (mbedtls_svc_key_id_is_null(key)) { |
| 1143 | return PSA_SUCCESS; |
| 1144 | } |
Gilles Peskine | 1841cf4 | 2019-10-08 15:48:25 +0200 | [diff] [blame] | 1145 | |
Ronald Cron | f291111 | 2020-10-29 17:51:10 +0100 | [diff] [blame] | 1146 | /* |
Ronald Cron | 19daca9 | 2020-11-10 18:08:03 +0100 | [diff] [blame] | 1147 | * Get the description of the key in a key slot. In case of a persistent |
Ronald Cron | f291111 | 2020-10-29 17:51:10 +0100 | [diff] [blame] | 1148 | * key, this will load the key description from persistent memory if not |
| 1149 | * done yet. We cannot avoid this loading as without it we don't know if |
| 1150 | * the key is operated by an SE or not and this information is needed by |
| 1151 | * the current implementation. |
| 1152 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1153 | status = psa_get_and_lock_key_slot(key, &slot); |
| 1154 | if (status != PSA_SUCCESS) { |
| 1155 | return status; |
| 1156 | } |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1157 | |
Ronald Cron | f291111 | 2020-10-29 17:51:10 +0100 | [diff] [blame] | 1158 | /* |
| 1159 | * If the key slot containing the key description is under access by the |
| 1160 | * library (apart from the present access), the key cannot be destroyed |
| 1161 | * yet. For the time being, just return in error. Eventually (to be |
| 1162 | * implemented), the key should be destroyed when all accesses have |
| 1163 | * stopped. |
| 1164 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1165 | if (slot->lock_count > 1) { |
| 1166 | psa_unlock_key_slot(slot); |
| 1167 | return PSA_ERROR_GENERIC_ERROR; |
Ronald Cron | f291111 | 2020-10-29 17:51:10 +0100 | [diff] [blame] | 1168 | } |
| 1169 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1170 | if (PSA_KEY_LIFETIME_IS_READ_ONLY(slot->attr.lifetime)) { |
Gilles Peskine | 6687cd0 | 2021-04-21 22:32:05 +0200 | [diff] [blame] | 1171 | /* Refuse the destruction of a read-only key (which may or may not work |
| 1172 | * if we attempt it, depending on whether the key is merely read-only |
| 1173 | * by policy or actually physically read-only). |
Gilles Peskine | f9a046e | 2021-06-07 23:27:54 +0200 | [diff] [blame] | 1174 | * Just do the best we can, which is to wipe the copy in memory |
| 1175 | * (done in this function's cleanup code). */ |
| 1176 | overall_status = PSA_ERROR_NOT_PERMITTED; |
| 1177 | goto exit; |
Gilles Peskine | 6687cd0 | 2021-04-21 22:32:05 +0200 | [diff] [blame] | 1178 | } |
| 1179 | |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1180 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1181 | driver = psa_get_se_driver_entry(slot->attr.lifetime); |
| 1182 | if (driver != NULL) { |
Gilles Peskine | 60450a4 | 2019-07-25 11:32:45 +0200 | [diff] [blame] | 1183 | /* For a key in a secure element, we need to do three things: |
| 1184 | * remove the key file in internal storage, destroy the |
| 1185 | * key inside the secure element, and update the driver's |
| 1186 | * persistent data. Start a transaction that will encompass these |
| 1187 | * three actions. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1188 | psa_crypto_prepare_transaction(PSA_CRYPTO_TRANSACTION_DESTROY_KEY); |
Gilles Peskine | 8e33870 | 2019-07-30 20:06:31 +0200 | [diff] [blame] | 1189 | psa_crypto_transaction.key.lifetime = slot->attr.lifetime; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1190 | psa_crypto_transaction.key.slot = psa_key_slot_get_slot_number(slot); |
Gilles Peskine | 8e33870 | 2019-07-30 20:06:31 +0200 | [diff] [blame] | 1191 | psa_crypto_transaction.key.id = slot->attr.id; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1192 | status = psa_crypto_save_transaction(); |
| 1193 | if (status != PSA_SUCCESS) { |
| 1194 | (void) psa_crypto_stop_transaction(); |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1195 | /* We should still try to destroy the key in the secure |
| 1196 | * element and the key metadata in storage. This is especially |
| 1197 | * important if the error is that the storage is full. |
| 1198 | * But how to do it exactly without risking an inconsistent |
| 1199 | * state after a reset? |
| 1200 | * https://github.com/ARMmbed/mbed-crypto/issues/215 |
| 1201 | */ |
| 1202 | overall_status = status; |
| 1203 | goto exit; |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1204 | } |
| 1205 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1206 | status = psa_destroy_se_key(driver, |
| 1207 | psa_key_slot_get_slot_number(slot)); |
| 1208 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1209 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1210 | } |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1211 | } |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1212 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1213 | |
Darryl Green | d49a499 | 2018-06-18 17:27:26 +0100 | [diff] [blame] | 1214 | #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1215 | if (!PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) { |
| 1216 | status = psa_destroy_persistent_key(slot->attr.id); |
| 1217 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1218 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1219 | } |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1220 | |
Gilles Peskine | 9ce31c4 | 2019-08-13 15:14:20 +0200 | [diff] [blame] | 1221 | /* TODO: other slots may have a copy of the same key. We should |
| 1222 | * invalidate them. |
| 1223 | * https://github.com/ARMmbed/mbed-crypto/issues/214 |
| 1224 | */ |
Darryl Green | d49a499 | 2018-06-18 17:27:26 +0100 | [diff] [blame] | 1225 | } |
| 1226 | #endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */ |
Gilles Peskine | 354f767 | 2019-07-12 23:46:38 +0200 | [diff] [blame] | 1227 | |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1228 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1229 | if (driver != NULL) { |
| 1230 | status = psa_save_se_persistent_data(driver); |
| 1231 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1232 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1233 | } |
| 1234 | status = psa_crypto_stop_transaction(); |
| 1235 | if (overall_status == PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1236 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1237 | } |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1238 | } |
| 1239 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1240 | |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1241 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1242 | status = psa_wipe_key_slot(slot); |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1243 | /* Prioritize CORRUPTION_DETECTED from wiping over a storage error */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1244 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 4b7f340 | 2019-08-13 15:58:36 +0200 | [diff] [blame] | 1245 | overall_status = status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1246 | } |
| 1247 | return overall_status; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1248 | } |
| 1249 | |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1250 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT) || \ |
John Durkop | 0e00519 | 2020-10-31 22:06:54 -0700 | [diff] [blame] | 1251 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1252 | static psa_status_t psa_get_rsa_public_exponent( |
| 1253 | const mbedtls_rsa_context *rsa, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1254 | psa_key_attributes_t *attributes) |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1255 | { |
| 1256 | mbedtls_mpi mpi; |
Janos Follath | 24eed8d | 2019-11-22 13:21:35 +0000 | [diff] [blame] | 1257 | int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1258 | uint8_t *buffer = NULL; |
| 1259 | size_t buflen; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1260 | mbedtls_mpi_init(&mpi); |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1261 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1262 | ret = mbedtls_rsa_export(rsa, NULL, NULL, NULL, NULL, &mpi); |
| 1263 | if (ret != 0) { |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1264 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1265 | } |
| 1266 | if (mbedtls_mpi_cmp_int(&mpi, 65537) == 0) { |
Gilles Peskine | 772c8b1 | 2019-04-26 17:37:21 +0200 | [diff] [blame] | 1267 | /* It's the default value, which is reported as an empty string, |
| 1268 | * so there's nothing to do. */ |
| 1269 | goto exit; |
| 1270 | } |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1271 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1272 | buflen = mbedtls_mpi_size(&mpi); |
| 1273 | buffer = mbedtls_calloc(1, buflen); |
| 1274 | if (buffer == NULL) { |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1275 | ret = MBEDTLS_ERR_MPI_ALLOC_FAILED; |
| 1276 | goto exit; |
| 1277 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1278 | ret = mbedtls_mpi_write_binary(&mpi, buffer, buflen); |
| 1279 | if (ret != 0) { |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1280 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1281 | } |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1282 | attributes->domain_parameters = buffer; |
| 1283 | attributes->domain_parameters_size = buflen; |
| 1284 | |
| 1285 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1286 | mbedtls_mpi_free(&mpi); |
| 1287 | if (ret != 0) { |
| 1288 | mbedtls_free(buffer); |
| 1289 | } |
| 1290 | return mbedtls_to_psa_error(ret); |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1291 | } |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1292 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 1293 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */ |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1294 | |
Gilles Peskine | bfd322f | 2019-07-23 11:58:03 +0200 | [diff] [blame] | 1295 | /** Retrieve all the publicly-accessible attributes of a key. |
| 1296 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1297 | psa_status_t psa_get_key_attributes(mbedtls_svc_key_id_t key, |
| 1298 | psa_key_attributes_t *attributes) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1299 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1300 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1301 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 1302 | psa_key_slot_t *slot; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1303 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1304 | psa_reset_key_attributes(attributes); |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 1305 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1306 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, 0, 0); |
| 1307 | if (status != PSA_SUCCESS) { |
| 1308 | return status; |
| 1309 | } |
Gilles Peskine | b870b18 | 2018-07-06 16:02:09 +0200 | [diff] [blame] | 1310 | |
Gilles Peskine | 76aa09c | 2019-07-31 14:15:34 +0200 | [diff] [blame] | 1311 | attributes->core = slot->attr; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1312 | attributes->core.flags &= (MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY | |
| 1313 | MBEDTLS_PSA_KA_MASK_DUAL_USE); |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1314 | |
| 1315 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1316 | if (psa_get_se_driver_entry(slot->attr.lifetime) != NULL) { |
| 1317 | psa_set_key_slot_number(attributes, |
| 1318 | psa_key_slot_get_slot_number(slot)); |
| 1319 | } |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1320 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1321 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1322 | switch (slot->attr.type) { |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1323 | #if (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && \ |
| 1324 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || \ |
John Durkop | 0e00519 | 2020-10-31 22:06:54 -0700 | [diff] [blame] | 1325 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) |
Gilles Peskine | c93b80c | 2019-05-16 19:39:54 +0200 | [diff] [blame] | 1326 | case PSA_KEY_TYPE_RSA_KEY_PAIR: |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1327 | case PSA_KEY_TYPE_RSA_PUBLIC_KEY: |
Janos Follath | 1d57a20 | 2019-08-13 12:15:34 +0100 | [diff] [blame] | 1328 | /* TODO: reporting the public exponent for opaque keys |
Gilles Peskine | c9d7f94 | 2019-08-13 16:17:16 +0200 | [diff] [blame] | 1329 | * is not yet implemented. |
| 1330 | * https://github.com/ARMmbed/mbed-crypto/issues/216 |
| 1331 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1332 | if (!psa_key_lifetime_is_external(slot->attr.lifetime)) { |
Steven Cooreman | a2371e5 | 2020-07-28 14:30:39 +0200 | [diff] [blame] | 1333 | mbedtls_rsa_context *rsa = NULL; |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1334 | |
Ronald Cron | 9085708 | 2020-11-25 14:58:33 +0100 | [diff] [blame] | 1335 | status = mbedtls_psa_rsa_load_representation( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1336 | slot->attr.type, |
| 1337 | slot->key.data, |
| 1338 | slot->key.bytes, |
| 1339 | &rsa); |
| 1340 | if (status != PSA_SUCCESS) { |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1341 | break; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1342 | } |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1343 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1344 | status = psa_get_rsa_public_exponent(rsa, |
| 1345 | attributes); |
| 1346 | mbedtls_rsa_free(rsa); |
| 1347 | mbedtls_free(rsa); |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1348 | } |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1349 | break; |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1350 | #endif /* (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && \ |
| 1351 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 1352 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */ |
Gilles Peskine | b699f07 | 2019-04-26 16:06:02 +0200 | [diff] [blame] | 1353 | default: |
| 1354 | /* Nothing else to do. */ |
| 1355 | break; |
| 1356 | } |
| 1357 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1358 | if (status != PSA_SUCCESS) { |
| 1359 | psa_reset_key_attributes(attributes); |
| 1360 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1361 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1362 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1363 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1364 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1365 | } |
| 1366 | |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1367 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
| 1368 | psa_status_t psa_get_key_slot_number( |
| 1369 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1370 | psa_key_slot_number_t *slot_number) |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1371 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1372 | if (attributes->core.flags & MBEDTLS_PSA_KA_FLAG_HAS_SLOT_NUMBER) { |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1373 | *slot_number = attributes->slot_number; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1374 | return PSA_SUCCESS; |
| 1375 | } else { |
| 1376 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1377 | } |
Gilles Peskine | c8000c0 | 2019-08-02 20:15:51 +0200 | [diff] [blame] | 1378 | } |
| 1379 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1380 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1381 | static psa_status_t psa_export_key_buffer_internal(const uint8_t *key_buffer, |
| 1382 | size_t key_buffer_size, |
| 1383 | uint8_t *data, |
| 1384 | size_t data_size, |
| 1385 | size_t *data_length) |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1386 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1387 | if (key_buffer_size > data_size) { |
| 1388 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 1389 | } |
| 1390 | memcpy(data, key_buffer, key_buffer_size); |
| 1391 | memset(data + key_buffer_size, 0, |
| 1392 | data_size - key_buffer_size); |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1393 | *data_length = key_buffer_size; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1394 | return PSA_SUCCESS; |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1395 | } |
| 1396 | |
Ronald Cron | 7285cda | 2020-11-26 14:46:37 +0100 | [diff] [blame] | 1397 | psa_status_t psa_export_key_internal( |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1398 | const psa_key_attributes_t *attributes, |
| 1399 | const uint8_t *key_buffer, size_t key_buffer_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1400 | uint8_t *data, size_t data_size, size_t *data_length) |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1401 | { |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1402 | psa_key_type_t type = attributes->core.type; |
| 1403 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1404 | if (key_type_is_raw_bytes(type) || |
| 1405 | PSA_KEY_TYPE_IS_RSA(type) || |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 1406 | PSA_KEY_TYPE_IS_ECC(type) || |
| 1407 | PSA_KEY_TYPE_IS_DH(type)) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1408 | return psa_export_key_buffer_internal( |
| 1409 | key_buffer, key_buffer_size, |
| 1410 | data, data_size, data_length); |
| 1411 | } else { |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1412 | /* This shouldn't happen in the reference implementation, but |
| 1413 | it is valid for a special-purpose implementation to omit |
| 1414 | support for exporting certain key types. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1415 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1416 | } |
| 1417 | } |
| 1418 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1419 | psa_status_t psa_export_key(mbedtls_svc_key_id_t key, |
| 1420 | uint8_t *data, |
| 1421 | size_t data_size, |
| 1422 | size_t *data_length) |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1423 | { |
| 1424 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1425 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 1426 | psa_key_slot_t *slot; |
| 1427 | |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1428 | /* Reject a zero-length output buffer now, since this can never be a |
| 1429 | * valid key representation. This way we know that data must be a valid |
| 1430 | * pointer and we can do things like memset(data, ..., data_size). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1431 | if (data_size == 0) { |
| 1432 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 1433 | } |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1434 | |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1435 | /* Set the key to empty now, so that even when there are errors, we always |
| 1436 | * set data_length to a value between 0 and data_size. On error, setting |
| 1437 | * the key to empty is a good choice because an empty key representation is |
| 1438 | * unlikely to be accepted anywhere. */ |
Jaeden Amero | f24c7f8 | 2018-06-27 17:20:43 +0100 | [diff] [blame] | 1439 | *data_length = 0; |
| 1440 | |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1441 | /* Export requires the EXPORT flag. There is an exception for public keys, |
| 1442 | * which don't require any flag, but |
| 1443 | * psa_get_and_lock_key_slot_with_policy() takes care of this. |
| 1444 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1445 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 1446 | PSA_KEY_USAGE_EXPORT, 0); |
| 1447 | if (status != PSA_SUCCESS) { |
| 1448 | return status; |
| 1449 | } |
mohammad1603 | 06e7920 | 2018-03-28 13:17:44 +0300 | [diff] [blame] | 1450 | |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1451 | psa_key_attributes_t attributes = { |
| 1452 | .core = slot->attr |
| 1453 | }; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1454 | status = psa_driver_wrapper_export_key(&attributes, |
| 1455 | slot->key.data, slot->key.bytes, |
| 1456 | data, data_size, data_length); |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1457 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1458 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1459 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1460 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1461 | } |
| 1462 | |
Ronald Cron | 7285cda | 2020-11-26 14:46:37 +0100 | [diff] [blame] | 1463 | psa_status_t psa_export_public_key_internal( |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1464 | const psa_key_attributes_t *attributes, |
| 1465 | const uint8_t *key_buffer, |
| 1466 | size_t key_buffer_size, |
| 1467 | uint8_t *data, |
| 1468 | size_t data_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1469 | size_t *data_length) |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1470 | { |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1471 | psa_key_type_t type = attributes->core.type; |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1472 | |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1473 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(type) && |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1474 | (PSA_KEY_TYPE_IS_RSA(type) || PSA_KEY_TYPE_IS_ECC(type) || |
| 1475 | PSA_KEY_TYPE_IS_DH(type))) { |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1476 | /* Exporting public -> public */ |
| 1477 | return psa_export_key_buffer_internal( |
| 1478 | key_buffer, key_buffer_size, |
| 1479 | data, data_size, data_length); |
| 1480 | } else if (PSA_KEY_TYPE_IS_RSA(type)) { |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1481 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT) || \ |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1482 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) |
| 1483 | return mbedtls_psa_rsa_export_public_key(attributes, |
| 1484 | key_buffer, |
| 1485 | key_buffer_size, |
| 1486 | data, |
| 1487 | data_size, |
| 1488 | data_length); |
Darryl Green | 9e2d7a0 | 2018-07-24 16:33:30 +0100 | [diff] [blame] | 1489 | #else |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1490 | /* We don't know how to convert a private RSA key to public. */ |
| 1491 | return PSA_ERROR_NOT_SUPPORTED; |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1492 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 1493 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */ |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1494 | } else if (PSA_KEY_TYPE_IS_ECC(type)) { |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 1495 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_EXPORT) || \ |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1496 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) |
| 1497 | return mbedtls_psa_ecp_export_public_key(attributes, |
| 1498 | key_buffer, |
| 1499 | key_buffer_size, |
| 1500 | data, |
| 1501 | data_size, |
| 1502 | data_length); |
Steven Cooreman | 560c28a | 2020-07-24 23:20:24 +0200 | [diff] [blame] | 1503 | #else |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1504 | /* We don't know how to convert a private ECC key to public */ |
| 1505 | return PSA_ERROR_NOT_SUPPORTED; |
Valerio Setti | 27c501a | 2023-06-27 16:58:52 +0200 | [diff] [blame] | 1506 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_EXPORT) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 1507 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_PUBLIC_KEY) */ |
Przemek Stekiel | 6fd72b6 | 2023-04-27 10:20:56 +0200 | [diff] [blame] | 1508 | } else if (PSA_KEY_TYPE_IS_DH(type)) { |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 1509 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_EXPORT) || \ |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 1510 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) |
Przemek Stekiel | 152bb46 | 2023-06-01 11:52:39 +0200 | [diff] [blame] | 1511 | return mbedtls_psa_ffdh_export_public_key(attributes, |
Przemek Stekiel | 134cc2e | 2023-05-05 10:13:37 +0200 | [diff] [blame] | 1512 | key_buffer, |
| 1513 | key_buffer_size, |
| 1514 | data, data_size, |
| 1515 | data_length); |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 1516 | #else |
Przemek Stekiel | 472b3f3 | 2022-12-01 14:38:49 +0100 | [diff] [blame] | 1517 | return PSA_ERROR_NOT_SUPPORTED; |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 1518 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_EXPORT) || |
Przemek Stekiel | 6d85afa | 2023-04-28 11:42:17 +0200 | [diff] [blame] | 1519 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_PUBLIC_KEY) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1520 | } else { |
Przemek Stekiel | 0b11ee0 | 2023-05-16 13:26:06 +0200 | [diff] [blame] | 1521 | (void) key_buffer; |
| 1522 | (void) key_buffer_size; |
| 1523 | (void) data; |
| 1524 | (void) data_size; |
| 1525 | (void) data_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1526 | return PSA_ERROR_NOT_SUPPORTED; |
Steven Cooreman | 560c28a | 2020-07-24 23:20:24 +0200 | [diff] [blame] | 1527 | } |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 1528 | } |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1529 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1530 | psa_status_t psa_export_public_key(mbedtls_svc_key_id_t key, |
| 1531 | uint8_t *data, |
| 1532 | size_t data_size, |
| 1533 | size_t *data_length) |
Moran Peker | dd4ea38 | 2018-04-03 15:30:03 +0300 | [diff] [blame] | 1534 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1535 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1536 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 1537 | psa_key_slot_t *slot; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 1538 | psa_key_attributes_t attributes; |
Darryl Green | dd8fb77 | 2018-11-07 16:00:44 +0000 | [diff] [blame] | 1539 | |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1540 | /* Reject a zero-length output buffer now, since this can never be a |
| 1541 | * valid key representation. This way we know that data must be a valid |
| 1542 | * pointer and we can do things like memset(data, ..., data_size). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1543 | if (data_size == 0) { |
| 1544 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 1545 | } |
Ronald Cron | e907e55 | 2021-01-18 13:22:38 +0100 | [diff] [blame] | 1546 | |
Darryl Green | dd8fb77 | 2018-11-07 16:00:44 +0000 | [diff] [blame] | 1547 | /* Set the key to empty now, so that even when there are errors, we always |
| 1548 | * set data_length to a value between 0 and data_size. On error, setting |
| 1549 | * the key to empty is a good choice because an empty key representation is |
| 1550 | * unlikely to be accepted anywhere. */ |
| 1551 | *data_length = 0; |
| 1552 | |
| 1553 | /* Exporting a public key doesn't require a usage flag. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1554 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, 0, 0); |
| 1555 | if (status != PSA_SUCCESS) { |
| 1556 | return status; |
| 1557 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1558 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1559 | if (!PSA_KEY_TYPE_IS_ASYMMETRIC(slot->attr.type)) { |
| 1560 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 1561 | goto exit; |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1562 | } |
| 1563 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 1564 | attributes = (psa_key_attributes_t) { |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1565 | .core = slot->attr |
| 1566 | }; |
Ronald Cron | 6722798 | 2020-11-26 15:16:05 +0100 | [diff] [blame] | 1567 | status = psa_driver_wrapper_export_public_key( |
Ronald Cron | d18b5f8 | 2020-11-25 16:46:05 +0100 | [diff] [blame] | 1568 | &attributes, slot->key.data, slot->key.bytes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1569 | data, data_size, data_length); |
Ronald Cron | 9486f9d | 2020-11-26 13:36:23 +0100 | [diff] [blame] | 1570 | |
| 1571 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1572 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1573 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1574 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Moran Peker | dd4ea38 | 2018-04-03 15:30:03 +0300 | [diff] [blame] | 1575 | } |
| 1576 | |
Tom Cosgrove | 6ef9bb3 | 2023-03-08 14:19:51 +0000 | [diff] [blame] | 1577 | MBEDTLS_STATIC_ASSERT( |
| 1578 | (MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_DUAL_USE) == 0, |
| 1579 | "One or more key attribute flag is listed as both external-only and dual-use") |
| 1580 | MBEDTLS_STATIC_ASSERT( |
| 1581 | (PSA_KA_MASK_INTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_DUAL_USE) == 0, |
| 1582 | "One or more key attribute flag is listed as both internal-only and dual-use") |
| 1583 | MBEDTLS_STATIC_ASSERT( |
| 1584 | (PSA_KA_MASK_INTERNAL_ONLY & MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY) == 0, |
| 1585 | "One or more key attribute flag is listed as both internal-only and external-only") |
Gilles Peskine | 91e8c33 | 2019-08-02 19:19:39 +0200 | [diff] [blame] | 1586 | |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1587 | /** Validate that a key policy is internally well-formed. |
| 1588 | * |
| 1589 | * This function only rejects invalid policies. It does not validate the |
| 1590 | * consistency of the policy with respect to other attributes of the key |
| 1591 | * such as the key type. |
| 1592 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1593 | 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] | 1594 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1595 | if ((policy->usage & ~(PSA_KEY_USAGE_EXPORT | |
| 1596 | PSA_KEY_USAGE_COPY | |
| 1597 | PSA_KEY_USAGE_ENCRYPT | |
| 1598 | PSA_KEY_USAGE_DECRYPT | |
| 1599 | PSA_KEY_USAGE_SIGN_MESSAGE | |
| 1600 | PSA_KEY_USAGE_VERIFY_MESSAGE | |
| 1601 | PSA_KEY_USAGE_SIGN_HASH | |
| 1602 | PSA_KEY_USAGE_VERIFY_HASH | |
| 1603 | PSA_KEY_USAGE_VERIFY_DERIVATION | |
| 1604 | PSA_KEY_USAGE_DERIVE)) != 0) { |
| 1605 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1606 | } |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1607 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1608 | return PSA_SUCCESS; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1609 | } |
| 1610 | |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1611 | /** Validate the internal consistency of key attributes. |
| 1612 | * |
| 1613 | * This function only rejects invalid attribute values. If does not |
| 1614 | * validate the consistency of the attributes with any key data that may |
| 1615 | * be involved in the creation of the key. |
| 1616 | * |
| 1617 | * Call this function early in the key creation process. |
| 1618 | * |
| 1619 | * \param[in] attributes Key attributes for the new key. |
| 1620 | * \param[out] p_drv On any return, the driver for the key, if any. |
| 1621 | * NULL for a transparent key. |
| 1622 | * |
| 1623 | */ |
| 1624 | static psa_status_t psa_validate_key_attributes( |
| 1625 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1626 | psa_se_drv_table_entry_t **p_drv) |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1627 | { |
Steven Cooreman | 81fe7c3 | 2020-06-08 18:37:19 +0200 | [diff] [blame] | 1628 | psa_status_t status = PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1629 | psa_key_lifetime_t lifetime = psa_get_key_lifetime(attributes); |
| 1630 | mbedtls_svc_key_id_t key = psa_get_key_id(attributes); |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1631 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1632 | status = psa_validate_key_location(lifetime, p_drv); |
| 1633 | if (status != PSA_SUCCESS) { |
| 1634 | return status; |
Ronald Cron | d2ed481 | 2020-07-17 16:11:30 +0200 | [diff] [blame] | 1635 | } |
| 1636 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1637 | status = psa_validate_key_persistence(lifetime); |
| 1638 | if (status != PSA_SUCCESS) { |
| 1639 | return status; |
| 1640 | } |
| 1641 | |
| 1642 | if (PSA_KEY_LIFETIME_IS_VOLATILE(lifetime)) { |
| 1643 | if (MBEDTLS_SVC_KEY_ID_GET_KEY_ID(key) != 0) { |
| 1644 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1645 | } |
| 1646 | } else { |
| 1647 | if (!psa_is_valid_key_id(psa_get_key_id(attributes), 0)) { |
| 1648 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1649 | } |
| 1650 | } |
| 1651 | |
| 1652 | status = psa_validate_key_policy(&attributes->core.policy); |
| 1653 | if (status != PSA_SUCCESS) { |
| 1654 | return status; |
| 1655 | } |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1656 | |
| 1657 | /* Refuse to create overly large keys. |
| 1658 | * Note that this doesn't trigger on import if the attributes don't |
| 1659 | * explicitly specify a size (so psa_get_key_bits returns 0), so |
| 1660 | * psa_import_key() needs its own checks. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1661 | if (psa_get_key_bits(attributes) > PSA_MAX_KEY_BITS) { |
| 1662 | return PSA_ERROR_NOT_SUPPORTED; |
| 1663 | } |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1664 | |
Gilles Peskine | 91e8c33 | 2019-08-02 19:19:39 +0200 | [diff] [blame] | 1665 | /* Reject invalid flags. These should not be reachable through the API. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1666 | if (attributes->core.flags & ~(MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY | |
| 1667 | MBEDTLS_PSA_KA_MASK_DUAL_USE)) { |
| 1668 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1669 | } |
Gilles Peskine | 91e8c33 | 2019-08-02 19:19:39 +0200 | [diff] [blame] | 1670 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1671 | return PSA_SUCCESS; |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1672 | } |
| 1673 | |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1674 | /** Prepare a key slot to receive key material. |
| 1675 | * |
| 1676 | * This function allocates a key slot and sets its metadata. |
| 1677 | * |
| 1678 | * If this function fails, call psa_fail_key_creation(). |
| 1679 | * |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1680 | * This function is intended to be used as follows: |
| 1681 | * -# Call psa_start_key_creation() to allocate a key slot, prepare |
Ronald Cron | cf56a0a | 2020-08-04 09:51:30 +0200 | [diff] [blame] | 1682 | * it with the specified attributes, and in case of a volatile key assign it |
| 1683 | * a volatile key identifier. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1684 | * -# Populate the slot with the key material. |
| 1685 | * -# Call psa_finish_key_creation() to finalize the creation of the slot. |
| 1686 | * In case of failure at any step, stop the sequence and call |
| 1687 | * psa_fail_key_creation(). |
| 1688 | * |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1689 | * On success, the key slot is locked. It is the responsibility of the caller |
| 1690 | * to unlock the key slot when it does not access it anymore. |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 1691 | * |
Gilles Peskine | df17914 | 2019-07-15 22:02:14 +0200 | [diff] [blame] | 1692 | * \param method An identification of the calling function. |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1693 | * \param[in] attributes Key attributes for the new key. |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1694 | * \param[out] p_slot On success, a pointer to the prepared slot. |
| 1695 | * \param[out] p_drv On any return, the driver for the key, if any. |
| 1696 | * NULL for a transparent key. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1697 | * |
| 1698 | * \retval #PSA_SUCCESS |
| 1699 | * The key slot is ready to receive key material. |
| 1700 | * \return If this function fails, the key slot is an invalid state. |
| 1701 | * 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] | 1702 | */ |
| 1703 | static psa_status_t psa_start_key_creation( |
Gilles Peskine | df17914 | 2019-07-15 22:02:14 +0200 | [diff] [blame] | 1704 | psa_key_creation_method_t method, |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1705 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1706 | psa_key_slot_t **p_slot, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1707 | psa_se_drv_table_entry_t **p_drv) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1708 | { |
| 1709 | psa_status_t status; |
Ronald Cron | 2a99315 | 2020-07-17 14:13:26 +0200 | [diff] [blame] | 1710 | psa_key_id_t volatile_key_id; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1711 | psa_key_slot_t *slot; |
| 1712 | |
Gilles Peskine | df17914 | 2019-07-15 22:02:14 +0200 | [diff] [blame] | 1713 | (void) method; |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1714 | *p_drv = NULL; |
| 1715 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1716 | status = psa_validate_key_attributes(attributes, p_drv); |
| 1717 | if (status != PSA_SUCCESS) { |
| 1718 | return status; |
| 1719 | } |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1720 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1721 | status = psa_get_empty_key_slot(&volatile_key_id, p_slot); |
| 1722 | if (status != PSA_SUCCESS) { |
| 1723 | return status; |
| 1724 | } |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1725 | slot = *p_slot; |
| 1726 | |
Gilles Peskine | 76aa09c | 2019-07-31 14:15:34 +0200 | [diff] [blame] | 1727 | /* We're storing the declared bit-size of the key. It's up to each |
| 1728 | * creation mechanism to verify that this information is correct. |
| 1729 | * It's automatically correct for mechanisms that use the bit-size as |
Gilles Peskine | b46bef2 | 2019-07-30 21:32:04 +0200 | [diff] [blame] | 1730 | * an input (generate, device) but not for those where the bit-size |
Ronald Cron | c4d1b51 | 2020-07-31 11:26:37 +0200 | [diff] [blame] | 1731 | * is optional (import, copy). In case of a volatile key, assign it the |
| 1732 | * volatile key identifier associated to the slot returned to contain its |
| 1733 | * definition. */ |
Gilles Peskine | 76aa09c | 2019-07-31 14:15:34 +0200 | [diff] [blame] | 1734 | |
| 1735 | slot->attr = attributes->core; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1736 | if (PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) { |
Ronald Cron | c4d1b51 | 2020-07-31 11:26:37 +0200 | [diff] [blame] | 1737 | #if !defined(MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER) |
| 1738 | slot->attr.id = volatile_key_id; |
| 1739 | #else |
| 1740 | slot->attr.id.key_id = volatile_key_id; |
| 1741 | #endif |
| 1742 | } |
Gilles Peskine | c744d99 | 2019-07-30 17:26:54 +0200 | [diff] [blame] | 1743 | |
Gilles Peskine | 91e8c33 | 2019-08-02 19:19:39 +0200 | [diff] [blame] | 1744 | /* Erase external-only flags from the internal copy. To access |
Gilles Peskine | 013f547 | 2019-08-07 15:42:14 +0200 | [diff] [blame] | 1745 | * external-only flags, query `attributes`. Thanks to the check |
| 1746 | * in psa_validate_key_attributes(), this leaves the dual-use |
Gilles Peskine | edbed56 | 2019-08-07 18:19:59 +0200 | [diff] [blame] | 1747 | * flags and any internal flag that psa_get_empty_key_slot() |
Gilles Peskine | 013f547 | 2019-08-07 15:42:14 +0200 | [diff] [blame] | 1748 | * may have set. */ |
| 1749 | slot->attr.flags &= ~MBEDTLS_PSA_KA_MASK_EXTERNAL_ONLY; |
Gilles Peskine | 91e8c33 | 2019-08-02 19:19:39 +0200 | [diff] [blame] | 1750 | |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1751 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 1752 | /* 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] | 1753 | * when creating or registering a persistent key: |
Gilles Peskine | 60450a4 | 2019-07-25 11:32:45 +0200 | [diff] [blame] | 1754 | * create the key file in internal storage, create the |
| 1755 | * key inside the secure element, and update the driver's |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1756 | * persistent data. This is done by starting a transaction that will |
| 1757 | * encompass these three actions. |
| 1758 | * For registering a volatile key, we just need to find an appropriate |
| 1759 | * slot number inside the SE. Since the key is designated volatile, creating |
| 1760 | * a transaction is not required. */ |
Gilles Peskine | 60450a4 | 2019-07-25 11:32:45 +0200 | [diff] [blame] | 1761 | /* The first thing to do is to find a slot number for the new key. |
| 1762 | * We save the slot number in persistent storage as part of the |
| 1763 | * transaction data. It will be needed to recover if the power |
| 1764 | * fails during the key creation process, to clean up on the secure |
| 1765 | * element side after restarting. Obtaining a slot number from the |
| 1766 | * secure element driver updates its persistent state, but we do not yet |
| 1767 | * save the driver's persistent state, so that if the power fails, |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1768 | * 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] | 1769 | if (*p_drv != NULL) { |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1770 | psa_key_slot_number_t slot_number; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1771 | status = psa_find_se_slot_for_key(attributes, method, *p_drv, |
| 1772 | &slot_number); |
| 1773 | if (status != PSA_SUCCESS) { |
| 1774 | return status; |
| 1775 | } |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1776 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1777 | if (!PSA_KEY_LIFETIME_IS_VOLATILE(attributes->core.lifetime)) { |
| 1778 | psa_crypto_prepare_transaction(PSA_CRYPTO_TRANSACTION_CREATE_KEY); |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1779 | psa_crypto_transaction.key.lifetime = slot->attr.lifetime; |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1780 | psa_crypto_transaction.key.slot = slot_number; |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1781 | psa_crypto_transaction.key.id = slot->attr.id; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1782 | status = psa_crypto_save_transaction(); |
| 1783 | if (status != PSA_SUCCESS) { |
| 1784 | (void) psa_crypto_stop_transaction(); |
| 1785 | return status; |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1786 | } |
Gilles Peskine | 66be51c | 2019-07-25 18:02:52 +0200 | [diff] [blame] | 1787 | } |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1788 | |
| 1789 | status = psa_copy_key_material_into_slot( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1790 | slot, (uint8_t *) (&slot_number), sizeof(slot_number)); |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1791 | } |
Gilles Peskine | 3efcebb | 2019-10-01 14:18:35 +0200 | [diff] [blame] | 1792 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1793 | if (*p_drv == NULL && method == PSA_KEY_CREATION_REGISTER) { |
Gilles Peskine | 3efcebb | 2019-10-01 14:18:35 +0200 | [diff] [blame] | 1794 | /* Key registration only makes sense with a secure element. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1795 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 3efcebb | 2019-10-01 14:18:35 +0200 | [diff] [blame] | 1796 | } |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1797 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1798 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1799 | return PSA_SUCCESS; |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1800 | } |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1801 | |
| 1802 | /** Finalize the creation of a key once its key material has been set. |
| 1803 | * |
| 1804 | * This entails writing the key to persistent storage. |
| 1805 | * |
| 1806 | * If this function fails, call psa_fail_key_creation(). |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1807 | * See the documentation of psa_start_key_creation() for the intended use |
| 1808 | * of this function. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1809 | * |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 1810 | * If the finalization succeeds, the function unlocks the key slot (it was |
| 1811 | * locked by psa_start_key_creation()) and the key slot cannot be accessed |
| 1812 | * anymore as part of the key creation process. |
Ronald Cron | 5097294 | 2020-11-14 11:28:25 +0100 | [diff] [blame] | 1813 | * |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1814 | * \param[in,out] slot Pointer to the slot with key material. |
| 1815 | * \param[in] driver The secure element driver for the key, |
| 1816 | * or NULL for a transparent key. |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1817 | * \param[out] key On success, identifier of the key. Note that the |
| 1818 | * key identifier is also stored in the key slot. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1819 | * |
| 1820 | * \retval #PSA_SUCCESS |
Ronald Cron | cf56a0a | 2020-08-04 09:51:30 +0200 | [diff] [blame] | 1821 | * The key was successfully created. |
Gilles Peskine | ed73355 | 2023-02-14 19:21:09 +0100 | [diff] [blame] | 1822 | * \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription |
| 1823 | * \retval #PSA_ERROR_INSUFFICIENT_STORAGE \emptydescription |
| 1824 | * \retval #PSA_ERROR_ALREADY_EXISTS \emptydescription |
| 1825 | * \retval #PSA_ERROR_DATA_INVALID \emptydescription |
| 1826 | * \retval #PSA_ERROR_DATA_CORRUPT \emptydescription |
| 1827 | * \retval #PSA_ERROR_STORAGE_FAILURE \emptydescription |
gabor-mezei-arm | 452b0a3 | 2020-11-09 17:42:55 +0100 | [diff] [blame] | 1828 | * |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1829 | * \return If this function fails, the key slot is an invalid state. |
| 1830 | * 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] | 1831 | */ |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1832 | static psa_status_t psa_finish_key_creation( |
| 1833 | psa_key_slot_t *slot, |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1834 | psa_se_drv_table_entry_t *driver, |
| 1835 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1836 | { |
| 1837 | psa_status_t status = PSA_SUCCESS; |
Gilles Peskine | 30afafd | 2019-04-25 13:47:40 +0200 | [diff] [blame] | 1838 | (void) slot; |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1839 | (void) driver; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1840 | |
| 1841 | #if defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1842 | if (!PSA_KEY_LIFETIME_IS_VOLATILE(slot->attr.lifetime)) { |
Gilles Peskine | 1df83d4 | 2019-07-23 16:13:14 +0200 | [diff] [blame] | 1843 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1844 | if (driver != NULL) { |
Gilles Peskine | b46bef2 | 2019-07-30 21:32:04 +0200 | [diff] [blame] | 1845 | psa_se_key_data_storage_t data; |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1846 | psa_key_slot_number_t slot_number = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1847 | psa_key_slot_get_slot_number(slot); |
Ronald Cron | ea0f8a6 | 2020-11-25 17:52:23 +0100 | [diff] [blame] | 1848 | |
Tom Cosgrove | 6ef9bb3 | 2023-03-08 14:19:51 +0000 | [diff] [blame] | 1849 | MBEDTLS_STATIC_ASSERT(sizeof(slot_number) == |
| 1850 | sizeof(data.slot_number), |
| 1851 | "Slot number size does not match psa_se_key_data_storage_t"); |
| 1852 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1853 | memcpy(&data.slot_number, &slot_number, sizeof(slot_number)); |
| 1854 | status = psa_save_persistent_key(&slot->attr, |
| 1855 | (uint8_t *) &data, |
| 1856 | sizeof(data)); |
| 1857 | } else |
Gilles Peskine | 1df83d4 | 2019-07-23 16:13:14 +0200 | [diff] [blame] | 1858 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1859 | { |
Steven Cooreman | 40120f6 | 2020-10-29 11:42:22 +0100 | [diff] [blame] | 1860 | /* Key material is saved in export representation in the slot, so |
| 1861 | * just pass the slot buffer for storage. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1862 | status = psa_save_persistent_key(&slot->attr, |
| 1863 | slot->key.data, |
| 1864 | slot->key.bytes); |
Gilles Peskine | 1df83d4 | 2019-07-23 16:13:14 +0200 | [diff] [blame] | 1865 | } |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1866 | } |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 1867 | #endif /* defined(MBEDTLS_PSA_CRYPTO_STORAGE_C) */ |
| 1868 | |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1869 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 1870 | /* Finish the transaction for a key creation. This does not |
| 1871 | * happen when registering an existing key. Detect this case |
| 1872 | * by checking whether a transaction is in progress (actual |
Steven Cooreman | bbeaf18 | 2020-06-08 18:29:44 +0200 | [diff] [blame] | 1873 | * creation of a persistent key in a secure element requires a transaction, |
| 1874 | * but registration or volatile key creation doesn't use one). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1875 | if (driver != NULL && |
| 1876 | psa_crypto_transaction.unknown.type == PSA_CRYPTO_TRANSACTION_CREATE_KEY) { |
| 1877 | status = psa_save_se_persistent_data(driver); |
| 1878 | if (status != PSA_SUCCESS) { |
| 1879 | psa_destroy_persistent_key(slot->attr.id); |
| 1880 | return status; |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1881 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1882 | status = psa_crypto_stop_transaction(); |
Gilles Peskine | cbaff46 | 2019-07-12 23:46:04 +0200 | [diff] [blame] | 1883 | } |
| 1884 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1885 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1886 | if (status == PSA_SUCCESS) { |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1887 | *key = slot->attr.id; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1888 | status = psa_unlock_key_slot(slot); |
| 1889 | if (status != PSA_SUCCESS) { |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1890 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1891 | } |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 1892 | } |
Ronald Cron | 5097294 | 2020-11-14 11:28:25 +0100 | [diff] [blame] | 1893 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1894 | return status; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1895 | } |
| 1896 | |
| 1897 | /** Abort the creation of a key. |
| 1898 | * |
| 1899 | * You may call this function after calling psa_start_key_creation(), |
| 1900 | * or after psa_finish_key_creation() fails. In other circumstances, this |
| 1901 | * function may not clean up persistent storage. |
Gilles Peskine | 9bc88c6 | 2019-04-28 11:37:03 +0200 | [diff] [blame] | 1902 | * See the documentation of psa_start_key_creation() for the intended use |
| 1903 | * of this function. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1904 | * |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1905 | * \param[in,out] slot Pointer to the slot with key material. |
| 1906 | * \param[in] driver The secure element driver for the key, |
| 1907 | * or NULL for a transparent key. |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1908 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1909 | static void psa_fail_key_creation(psa_key_slot_t *slot, |
| 1910 | psa_se_drv_table_entry_t *driver) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1911 | { |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1912 | (void) driver; |
| 1913 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1914 | if (slot == NULL) { |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1915 | return; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1916 | } |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1917 | |
| 1918 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Janos Follath | 1d57a20 | 2019-08-13 12:15:34 +0100 | [diff] [blame] | 1919 | /* TODO: If the key has already been created in the secure |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1920 | * element, and the failure happened later (when saving metadata |
| 1921 | * to internal storage), we need to destroy the key in the secure |
Gilles Peskine | c9d7f94 | 2019-08-13 16:17:16 +0200 | [diff] [blame] | 1922 | * element. |
| 1923 | * https://github.com/ARMmbed/mbed-crypto/issues/217 |
| 1924 | */ |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 1925 | |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 1926 | /* Abort the ongoing transaction if any (there may not be one if |
| 1927 | * the creation process failed before starting one, or if the |
| 1928 | * key creation is a registration of a key in a secure element). |
| 1929 | * Earlier functions must already have done what it takes to undo any |
| 1930 | * partial creation. All that's left is to update the transaction data |
| 1931 | * itself. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1932 | (void) psa_crypto_stop_transaction(); |
Gilles Peskine | 011e428 | 2019-06-26 18:34:38 +0200 | [diff] [blame] | 1933 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 1934 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1935 | psa_wipe_key_slot(slot); |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 1936 | } |
| 1937 | |
Gilles Peskine | 1b8594a | 2019-07-31 17:21:46 +0200 | [diff] [blame] | 1938 | /** Validate optional attributes during key creation. |
| 1939 | * |
| 1940 | * Some key attributes are optional during key creation. If they are |
| 1941 | * specified in the attributes structure, check that they are consistent |
| 1942 | * with the data in the slot. |
| 1943 | * |
| 1944 | * This function should be called near the end of key creation, after |
| 1945 | * the slot in memory is fully populated but before saving persistent data. |
| 1946 | */ |
| 1947 | static psa_status_t psa_validate_optional_attributes( |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 1948 | const psa_key_slot_t *slot, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1949 | const psa_key_attributes_t *attributes) |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 1950 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1951 | if (attributes->core.type != 0) { |
| 1952 | if (attributes->core.type != slot->attr.type) { |
| 1953 | return PSA_ERROR_INVALID_ARGUMENT; |
| 1954 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 1955 | } |
| 1956 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1957 | if (attributes->domain_parameters_size != 0) { |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 1958 | #if (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && \ |
| 1959 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1960 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) |
| 1961 | if (PSA_KEY_TYPE_IS_RSA(slot->attr.type)) { |
Steven Cooreman | a2371e5 | 2020-07-28 14:30:39 +0200 | [diff] [blame] | 1962 | mbedtls_rsa_context *rsa = NULL; |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 1963 | mbedtls_mpi actual, required; |
Steven Cooreman | 6d839f0 | 2020-07-30 11:36:45 +0200 | [diff] [blame] | 1964 | int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
Steven Cooreman | a01795d | 2020-07-24 22:48:15 +0200 | [diff] [blame] | 1965 | |
Ronald Cron | 9085708 | 2020-11-25 14:58:33 +0100 | [diff] [blame] | 1966 | psa_status_t status = mbedtls_psa_rsa_load_representation( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1967 | slot->attr.type, |
| 1968 | slot->key.data, |
| 1969 | slot->key.bytes, |
| 1970 | &rsa); |
| 1971 | if (status != PSA_SUCCESS) { |
| 1972 | return status; |
| 1973 | } |
Steven Cooreman | 75b7436 | 2020-07-28 14:30:13 +0200 | [diff] [blame] | 1974 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1975 | mbedtls_mpi_init(&actual); |
| 1976 | mbedtls_mpi_init(&required); |
| 1977 | ret = mbedtls_rsa_export(rsa, |
| 1978 | NULL, NULL, NULL, NULL, &actual); |
| 1979 | mbedtls_rsa_free(rsa); |
| 1980 | mbedtls_free(rsa); |
| 1981 | if (ret != 0) { |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 1982 | goto rsa_exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1983 | } |
| 1984 | ret = mbedtls_mpi_read_binary(&required, |
| 1985 | attributes->domain_parameters, |
| 1986 | attributes->domain_parameters_size); |
| 1987 | if (ret != 0) { |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 1988 | goto rsa_exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1989 | } |
| 1990 | if (mbedtls_mpi_cmp_mpi(&actual, &required) != 0) { |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 1991 | ret = MBEDTLS_ERR_RSA_BAD_INPUT_DATA; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 1992 | } |
| 1993 | rsa_exit: |
| 1994 | mbedtls_mpi_free(&actual); |
| 1995 | mbedtls_mpi_free(&required); |
| 1996 | if (ret != 0) { |
| 1997 | return mbedtls_to_psa_error(ret); |
| 1998 | } |
| 1999 | } else |
Valerio Setti | b2bcedb | 2023-07-10 11:24:00 +0200 | [diff] [blame] | 2000 | #endif /* (defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_IMPORT) && |
| 2001 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_EXPORT)) || |
John Durkop | 9814fa2 | 2020-11-04 12:28:15 -0800 | [diff] [blame] | 2002 | * defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_PUBLIC_KEY) */ |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2003 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2004 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2005 | } |
| 2006 | } |
| 2007 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2008 | if (attributes->core.bits != 0) { |
| 2009 | if (attributes->core.bits != slot->attr.bits) { |
| 2010 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2011 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2012 | } |
| 2013 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2014 | return PSA_SUCCESS; |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2015 | } |
| 2016 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2017 | psa_status_t psa_import_key(const psa_key_attributes_t *attributes, |
| 2018 | const uint8_t *data, |
| 2019 | size_t data_length, |
| 2020 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2021 | { |
| 2022 | psa_status_t status; |
| 2023 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 2024 | psa_se_drv_table_entry_t *driver = NULL; |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2025 | size_t bits; |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 2026 | size_t storage_size = data_length; |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2027 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 2028 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
| 2029 | |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 2030 | /* Reject zero-length symmetric keys (including raw data key objects). |
| 2031 | * This also rejects any key which might be encoded as an empty string, |
| 2032 | * which is never valid. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2033 | if (data_length == 0) { |
| 2034 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2035 | } |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 2036 | |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2037 | /* Ensure that the bytes-to-bits conversion cannot overflow. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2038 | if (data_length > SIZE_MAX / 8) { |
| 2039 | return PSA_ERROR_NOT_SUPPORTED; |
| 2040 | } |
Archana | 6ed4bda | 2021-08-04 10:47:15 +0530 | [diff] [blame] | 2041 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2042 | status = psa_start_key_creation(PSA_KEY_CREATION_IMPORT, attributes, |
| 2043 | &slot, &driver); |
| 2044 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2045 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2046 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2047 | |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2048 | /* 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] | 2049 | * storage ( thus not in the case of importing a key in a secure element |
| 2050 | * with storage ( MBEDTLS_PSA_CRYPTO_SE_C ) ),we have to allocate a |
| 2051 | * buffer to hold the imported key material. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2052 | if (slot->key.data == NULL) { |
| 2053 | if (psa_key_lifetime_is_external(attributes->core.lifetime)) { |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2054 | status = psa_driver_wrapper_get_key_buffer_size_from_key_data( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2055 | attributes, data, data_length, &storage_size); |
| 2056 | if (status != PSA_SUCCESS) { |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 2057 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2058 | } |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 2059 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2060 | status = psa_allocate_buffer_to_slot(slot, storage_size); |
| 2061 | if (status != PSA_SUCCESS) { |
Gilles Peskine | b46bef2 | 2019-07-30 21:32:04 +0200 | [diff] [blame] | 2062 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2063 | } |
Gilles Peskine | 5d30967 | 2019-07-12 23:47:28 +0200 | [diff] [blame] | 2064 | } |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2065 | |
| 2066 | bits = slot->attr.bits; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2067 | status = psa_driver_wrapper_import_key(attributes, |
| 2068 | data, data_length, |
| 2069 | slot->key.data, |
| 2070 | slot->key.bytes, |
| 2071 | &slot->key.bytes, &bits); |
| 2072 | if (status != PSA_SUCCESS) { |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2073 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2074 | } |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2075 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2076 | if (slot->attr.bits == 0) { |
Ronald Cron | fb2ed5b | 2020-11-30 12:11:01 +0100 | [diff] [blame] | 2077 | slot->attr.bits = (psa_key_bits_t) bits; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2078 | } else if (bits != slot->attr.bits) { |
Steven Cooreman | ac3434f | 2021-01-15 17:36:02 +0100 | [diff] [blame] | 2079 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 2080 | goto exit; |
Gilles Peskine | 5d30967 | 2019-07-12 23:47:28 +0200 | [diff] [blame] | 2081 | } |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 2082 | |
Archana | 6ed4bda | 2021-08-04 10:47:15 +0530 | [diff] [blame] | 2083 | /* Enforce a size limit, and in particular ensure that the bit |
| 2084 | * size fits in its representation type.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2085 | if (bits > PSA_MAX_KEY_BITS) { |
Archana | 6ed4bda | 2021-08-04 10:47:15 +0530 | [diff] [blame] | 2086 | status = PSA_ERROR_NOT_SUPPORTED; |
| 2087 | goto exit; |
| 2088 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2089 | status = psa_validate_optional_attributes(slot, attributes); |
| 2090 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 1801740 | 2019-07-24 20:25:59 +0200 | [diff] [blame] | 2091 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2092 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2093 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2094 | status = psa_finish_key_creation(slot, driver, key); |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2095 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2096 | if (status != PSA_SUCCESS) { |
| 2097 | psa_fail_key_creation(slot, driver); |
| 2098 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2099 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2100 | return status; |
Gilles Peskine | 4747d19 | 2019-04-17 15:05:45 +0200 | [diff] [blame] | 2101 | } |
| 2102 | |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2103 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
| 2104 | psa_status_t mbedtls_psa_register_se_key( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2105 | const psa_key_attributes_t *attributes) |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2106 | { |
| 2107 | psa_status_t status; |
| 2108 | psa_key_slot_t *slot = NULL; |
| 2109 | psa_se_drv_table_entry_t *driver = NULL; |
Ronald Cron | cf56a0a | 2020-08-04 09:51:30 +0200 | [diff] [blame] | 2110 | mbedtls_svc_key_id_t key = MBEDTLS_SVC_KEY_ID_INIT; |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2111 | |
| 2112 | /* Leaving attributes unspecified is not currently supported. |
| 2113 | * It could make sense to query the key type and size from the |
| 2114 | * secure element, but not all secure elements support this |
| 2115 | * and the driver HAL doesn't currently support it. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2116 | if (psa_get_key_type(attributes) == PSA_KEY_TYPE_NONE) { |
| 2117 | return PSA_ERROR_NOT_SUPPORTED; |
| 2118 | } |
| 2119 | if (psa_get_key_bits(attributes) == 0) { |
| 2120 | return PSA_ERROR_NOT_SUPPORTED; |
| 2121 | } |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2122 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2123 | status = psa_start_key_creation(PSA_KEY_CREATION_REGISTER, attributes, |
| 2124 | &slot, &driver); |
| 2125 | if (status != PSA_SUCCESS) { |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2126 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2127 | } |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2128 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2129 | status = psa_finish_key_creation(slot, driver, &key); |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2130 | |
| 2131 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2132 | if (status != PSA_SUCCESS) { |
| 2133 | psa_fail_key_creation(slot, driver); |
| 2134 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2135 | |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2136 | /* Registration doesn't keep the key in RAM. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2137 | psa_close_key(key); |
| 2138 | return status; |
Gilles Peskine | d772958 | 2019-08-05 15:55:54 +0200 | [diff] [blame] | 2139 | } |
| 2140 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
| 2141 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2142 | psa_status_t psa_copy_key(mbedtls_svc_key_id_t source_key, |
| 2143 | const psa_key_attributes_t *specified_attributes, |
| 2144 | mbedtls_svc_key_id_t *target_key) |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2145 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2146 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 2147 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2148 | psa_key_slot_t *source_slot = NULL; |
| 2149 | psa_key_slot_t *target_slot = NULL; |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2150 | psa_key_attributes_t actual_attributes = *specified_attributes; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 2151 | psa_se_drv_table_entry_t *driver = NULL; |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2152 | size_t storage_size = 0; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2153 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 2154 | *target_key = MBEDTLS_SVC_KEY_ID_INIT; |
| 2155 | |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2156 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2157 | source_key, &source_slot, PSA_KEY_USAGE_COPY, 0); |
| 2158 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2159 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2160 | } |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2161 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2162 | status = psa_validate_optional_attributes(source_slot, |
| 2163 | specified_attributes); |
| 2164 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2165 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2166 | } |
Gilles Peskine | 4ce2a9d | 2019-05-03 16:57:15 +0200 | [diff] [blame] | 2167 | |
Archana | 9d17bf4 | 2021-09-10 06:22:44 +0530 | [diff] [blame] | 2168 | /* The target key type and number of bits have been validated by |
| 2169 | * psa_validate_optional_attributes() to be either equal to zero or |
| 2170 | * equal to the ones of the source key. So it is safe to inherit |
| 2171 | * them from the source key now." |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2172 | * */ |
Archana | 9d17bf4 | 2021-09-10 06:22:44 +0530 | [diff] [blame] | 2173 | actual_attributes.core.bits = source_slot->attr.bits; |
| 2174 | actual_attributes.core.type = source_slot->attr.type; |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2175 | |
| 2176 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2177 | status = psa_restrict_key_policy(source_slot->attr.type, |
| 2178 | &actual_attributes.core.policy, |
| 2179 | &source_slot->attr.policy); |
| 2180 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2181 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2182 | } |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2183 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2184 | status = psa_start_key_creation(PSA_KEY_CREATION_COPY, &actual_attributes, |
| 2185 | &target_slot, &driver); |
| 2186 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2187 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2188 | } |
| 2189 | if (PSA_KEY_LIFETIME_GET_LOCATION(target_slot->attr.lifetime) != |
| 2190 | PSA_KEY_LIFETIME_GET_LOCATION(source_slot->attr.lifetime)) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2191 | /* |
Archana | 9d17bf4 | 2021-09-10 06:22:44 +0530 | [diff] [blame] | 2192 | * If the source and target keys are stored in different locations, |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2193 | * the source key would need to be exported as plaintext and re-imported |
| 2194 | * in the other location. This has security implications which have not |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2195 | * been fully mapped. For now, this can be achieved through |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2196 | * appropriate API invocations from the application, if needed. |
| 2197 | * */ |
Gilles Peskine | f4ee662 | 2019-07-24 13:44:30 +0200 | [diff] [blame] | 2198 | status = PSA_ERROR_NOT_SUPPORTED; |
| 2199 | goto exit; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2200 | } |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2201 | /* |
| 2202 | * When the source and target keys are within the same location, |
Archana | 449608b | 2021-09-08 15:36:05 +0530 | [diff] [blame] | 2203 | * - For transparent keys it is a blind copy without any driver invocation, |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2204 | * - For opaque keys this translates to an invocation of the drivers' |
| 2205 | * copy_key entry point through the dispatch layer. |
| 2206 | * */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2207 | if (psa_key_lifetime_is_external(actual_attributes.core.lifetime)) { |
| 2208 | status = psa_driver_wrapper_get_key_buffer_size(&actual_attributes, |
| 2209 | &storage_size); |
| 2210 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2211 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2212 | } |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2213 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2214 | status = psa_allocate_buffer_to_slot(target_slot, storage_size); |
| 2215 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2216 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2217 | } |
Archana | 374fe5b | 2021-09-08 15:50:28 +0530 | [diff] [blame] | 2218 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2219 | status = psa_driver_wrapper_copy_key(&actual_attributes, |
| 2220 | source_slot->key.data, |
| 2221 | source_slot->key.bytes, |
| 2222 | target_slot->key.data, |
| 2223 | target_slot->key.bytes, |
| 2224 | &target_slot->key.bytes); |
| 2225 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2226 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2227 | } |
| 2228 | } else { |
| 2229 | status = psa_copy_key_material_into_slot(target_slot, |
Archana | 9d17bf4 | 2021-09-10 06:22:44 +0530 | [diff] [blame] | 2230 | source_slot->key.data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2231 | source_slot->key.bytes); |
| 2232 | if (status != PSA_SUCCESS) { |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2233 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2234 | } |
Archana | 8a18036 | 2021-07-05 02:18:48 +0530 | [diff] [blame] | 2235 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2236 | status = psa_finish_key_creation(target_slot, driver, target_key); |
Gilles Peskine | 8c8f2ab | 2019-04-18 21:44:46 +0200 | [diff] [blame] | 2237 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2238 | if (status != PSA_SUCCESS) { |
| 2239 | psa_fail_key_creation(target_slot, driver); |
| 2240 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2241 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2242 | unlock_status = psa_unlock_key_slot(source_slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2243 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2244 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | f603c71 | 2019-01-19 13:40:11 +0100 | [diff] [blame] | 2245 | } |
| 2246 | |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 2247 | |
| 2248 | |
Gilles Peskine | 2f9c4dc | 2018-01-28 13:16:24 +0100 | [diff] [blame] | 2249 | /****************************************************************/ |
Gilles Peskine | 20035e3 | 2018-02-03 22:44:14 +0100 | [diff] [blame] | 2250 | /* Message digests */ |
| 2251 | /****************************************************************/ |
| 2252 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2253 | psa_status_t psa_hash_abort(psa_hash_operation_t *operation) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2254 | { |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2255 | /* Aborting a non-active operation is allowed */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2256 | if (operation->id == 0) { |
| 2257 | return PSA_SUCCESS; |
| 2258 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2259 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2260 | psa_status_t status = psa_driver_wrapper_hash_abort(operation); |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2261 | operation->id = 0; |
| 2262 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2263 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2264 | } |
| 2265 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2266 | psa_status_t psa_hash_setup(psa_hash_operation_t *operation, |
| 2267 | psa_algorithm_t alg) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2268 | { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2269 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2270 | |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2271 | /* A context must be freshly initialized before it can be set up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2272 | if (operation->id != 0) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2273 | status = PSA_ERROR_BAD_STATE; |
| 2274 | goto exit; |
| 2275 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2276 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2277 | if (!PSA_ALG_IS_HASH(alg)) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2278 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 2279 | goto exit; |
| 2280 | } |
Jaeden Amero | 36ee5d0 | 2019-02-19 09:25:10 +0000 | [diff] [blame] | 2281 | |
Steven Cooreman | b6bf4bb | 2021-03-15 19:00:14 +0100 | [diff] [blame] | 2282 | /* Ensure all of the context is zeroized, since PSA_HASH_OPERATION_INIT only |
| 2283 | * directly zeroes the int-sized dummy member of the context union. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2284 | memset(&operation->ctx, 0, sizeof(operation->ctx)); |
Steven Cooreman | 893232f | 2021-03-15 12:23:37 +0100 | [diff] [blame] | 2285 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2286 | status = psa_driver_wrapper_hash_setup(operation, alg); |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2287 | |
| 2288 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2289 | if (status != PSA_SUCCESS) { |
| 2290 | psa_hash_abort(operation); |
| 2291 | } |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2292 | |
| 2293 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2294 | } |
| 2295 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2296 | psa_status_t psa_hash_update(psa_hash_operation_t *operation, |
| 2297 | const uint8_t *input, |
| 2298 | size_t input_length) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2299 | { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2300 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2301 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2302 | if (operation->id == 0) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2303 | status = PSA_ERROR_BAD_STATE; |
| 2304 | goto exit; |
| 2305 | } |
Gilles Peskine | 94e4454 | 2018-07-12 16:58:43 +0200 | [diff] [blame] | 2306 | |
Steven Cooreman | c828835 | 2021-03-04 14:02:19 +0100 | [diff] [blame] | 2307 | /* Don't require hash implementations to behave correctly on a |
| 2308 | * zero-length input, which may have an invalid pointer. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2309 | if (input_length == 0) { |
| 2310 | return PSA_SUCCESS; |
| 2311 | } |
Steven Cooreman | c828835 | 2021-03-04 14:02:19 +0100 | [diff] [blame] | 2312 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2313 | status = psa_driver_wrapper_hash_update(operation, input, input_length); |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2314 | |
| 2315 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2316 | if (status != PSA_SUCCESS) { |
| 2317 | psa_hash_abort(operation); |
| 2318 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2319 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2320 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2321 | } |
| 2322 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2323 | psa_status_t psa_hash_finish(psa_hash_operation_t *operation, |
| 2324 | uint8_t *hash, |
| 2325 | size_t hash_size, |
| 2326 | size_t *hash_length) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2327 | { |
Steven Cooreman | fbe0928 | 2021-03-08 18:41:12 +0100 | [diff] [blame] | 2328 | *hash_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2329 | if (operation->id == 0) { |
| 2330 | return PSA_ERROR_BAD_STATE; |
| 2331 | } |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2332 | |
Steven Cooreman | 1e58235 | 2021-02-18 17:24:37 +0100 | [diff] [blame] | 2333 | psa_status_t status = psa_driver_wrapper_hash_finish( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2334 | operation, hash, hash_size, hash_length); |
| 2335 | psa_hash_abort(operation); |
| 2336 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2337 | } |
| 2338 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2339 | psa_status_t psa_hash_verify(psa_hash_operation_t *operation, |
| 2340 | const uint8_t *hash, |
| 2341 | size_t hash_length) |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2342 | { |
Ronald Cron | 69a6342 | 2021-10-18 09:47:58 +0200 | [diff] [blame] | 2343 | uint8_t actual_hash[PSA_HASH_MAX_SIZE]; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2344 | size_t actual_hash_length; |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2345 | psa_status_t status = psa_hash_finish( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2346 | operation, |
| 2347 | actual_hash, sizeof(actual_hash), |
| 2348 | &actual_hash_length); |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2349 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2350 | if (status != PSA_SUCCESS) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2351 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2352 | } |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2353 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2354 | if (actual_hash_length != hash_length) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2355 | status = PSA_ERROR_INVALID_SIGNATURE; |
| 2356 | goto exit; |
| 2357 | } |
| 2358 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2359 | if (mbedtls_psa_safer_memcmp(hash, actual_hash, actual_hash_length) != 0) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2360 | status = PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2361 | } |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2362 | |
| 2363 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2364 | mbedtls_platform_zeroize(actual_hash, sizeof(actual_hash)); |
| 2365 | if (status != PSA_SUCCESS) { |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2366 | psa_hash_abort(operation); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2367 | } |
Dave Rodgman | 685b6a7 | 2021-06-24 11:49:14 +0100 | [diff] [blame] | 2368 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2369 | return status; |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2370 | } |
| 2371 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2372 | psa_status_t psa_hash_compute(psa_algorithm_t alg, |
| 2373 | const uint8_t *input, size_t input_length, |
| 2374 | uint8_t *hash, size_t hash_size, |
| 2375 | size_t *hash_length) |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2376 | { |
Steven Cooreman | fbe0928 | 2021-03-08 18:41:12 +0100 | [diff] [blame] | 2377 | *hash_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2378 | if (!PSA_ALG_IS_HASH(alg)) { |
| 2379 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2380 | } |
Steven Cooreman | f66d5fd | 2021-03-08 18:40:40 +0100 | [diff] [blame] | 2381 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2382 | return psa_driver_wrapper_hash_compute(alg, input, input_length, |
| 2383 | hash, hash_size, hash_length); |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2384 | } |
| 2385 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2386 | psa_status_t psa_hash_compare(psa_algorithm_t alg, |
| 2387 | const uint8_t *input, size_t input_length, |
| 2388 | const uint8_t *hash, size_t hash_length) |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2389 | { |
Ronald Cron | 69a6342 | 2021-10-18 09:47:58 +0200 | [diff] [blame] | 2390 | uint8_t actual_hash[PSA_HASH_MAX_SIZE]; |
Steven Cooreman | 84d670d | 2021-02-18 16:22:53 +0100 | [diff] [blame] | 2391 | size_t actual_hash_length; |
Steven Cooreman | f66d5fd | 2021-03-08 18:40:40 +0100 | [diff] [blame] | 2392 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2393 | if (!PSA_ALG_IS_HASH(alg)) { |
| 2394 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2395 | } |
Steven Cooreman | f66d5fd | 2021-03-08 18:40:40 +0100 | [diff] [blame] | 2396 | |
Steven Cooreman | 1e58235 | 2021-02-18 17:24:37 +0100 | [diff] [blame] | 2397 | psa_status_t status = psa_driver_wrapper_hash_compute( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2398 | alg, input, input_length, |
| 2399 | actual_hash, sizeof(actual_hash), |
| 2400 | &actual_hash_length); |
| 2401 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2402 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2403 | } |
| 2404 | if (actual_hash_length != hash_length) { |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2405 | status = PSA_ERROR_INVALID_SIGNATURE; |
| 2406 | goto exit; |
| 2407 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2408 | if (mbedtls_psa_safer_memcmp(hash, actual_hash, actual_hash_length) != 0) { |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2409 | status = PSA_ERROR_INVALID_SIGNATURE; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2410 | } |
Gilles Peskine | 60aebec | 2021-12-13 12:33:18 +0100 | [diff] [blame] | 2411 | |
| 2412 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2413 | mbedtls_platform_zeroize(actual_hash, sizeof(actual_hash)); |
| 2414 | return status; |
Gilles Peskine | 0a749c8 | 2019-11-28 19:33:58 +0100 | [diff] [blame] | 2415 | } |
| 2416 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2417 | psa_status_t psa_hash_clone(const psa_hash_operation_t *source_operation, |
| 2418 | psa_hash_operation_t *target_operation) |
Gilles Peskine | ebb2c3e | 2019-01-19 12:03:41 +0100 | [diff] [blame] | 2419 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2420 | if (source_operation->id == 0 || |
| 2421 | target_operation->id != 0) { |
| 2422 | return PSA_ERROR_BAD_STATE; |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2423 | } |
Gilles Peskine | ebb2c3e | 2019-01-19 12:03:41 +0100 | [diff] [blame] | 2424 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2425 | psa_status_t status = psa_driver_wrapper_hash_clone(source_operation, |
| 2426 | target_operation); |
| 2427 | if (status != PSA_SUCCESS) { |
| 2428 | psa_hash_abort(target_operation); |
| 2429 | } |
Steven Cooreman | dbf8ced | 2021-03-04 13:01:18 +0100 | [diff] [blame] | 2430 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2431 | return status; |
Gilles Peskine | ebb2c3e | 2019-01-19 12:03:41 +0100 | [diff] [blame] | 2432 | } |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2433 | |
| 2434 | |
Gilles Peskine | 9ef733f | 2018-02-07 21:05:37 +0100 | [diff] [blame] | 2435 | /****************************************************************/ |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2436 | /* MAC */ |
| 2437 | /****************************************************************/ |
| 2438 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2439 | psa_status_t psa_mac_abort(psa_mac_operation_t *operation) |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2440 | { |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2441 | /* Aborting a non-active operation is allowed */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2442 | if (operation->id == 0) { |
| 2443 | return PSA_SUCCESS; |
| 2444 | } |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2445 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2446 | psa_status_t status = psa_driver_wrapper_mac_abort(operation); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2447 | operation->mac_size = 0; |
| 2448 | operation->is_sign = 0; |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2449 | operation->id = 0; |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2450 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2451 | return status; |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 2452 | } |
| 2453 | |
Ronald Cron | 2dff3b2 | 2021-06-17 16:33:22 +0200 | [diff] [blame] | 2454 | static psa_status_t psa_mac_finalize_alg_and_key_validation( |
| 2455 | psa_algorithm_t alg, |
Ronald Cron | 79bdd82 | 2021-06-17 16:46:44 +0200 | [diff] [blame] | 2456 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2457 | uint8_t *mac_size) |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2458 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2459 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2460 | psa_key_type_t key_type = psa_get_key_type(attributes); |
| 2461 | size_t key_bits = psa_get_key_bits(attributes); |
Steven Cooreman | 77e2cc5 | 2021-03-19 17:05:52 +0100 | [diff] [blame] | 2462 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2463 | if (!PSA_ALG_IS_MAC(alg)) { |
| 2464 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2465 | } |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2466 | |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 2467 | /* Validate the combination of key type and algorithm */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2468 | status = psa_mac_key_can_do(alg, key_type); |
| 2469 | if (status != PSA_SUCCESS) { |
| 2470 | return status; |
| 2471 | } |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2472 | |
Steven Cooreman | d1a68f1 | 2021-05-10 11:13:41 +0200 | [diff] [blame] | 2473 | /* Get the output length for the algorithm and key combination */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2474 | *mac_size = PSA_MAC_LENGTH(key_type, key_bits, alg); |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2475 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2476 | if (*mac_size < 4) { |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2477 | /* A very short MAC is too short for security since it can be |
| 2478 | * brute-forced. Ancient protocols with 32-bit MACs do exist, |
| 2479 | * so we make this our minimum, even though 32 bits is still |
| 2480 | * too small for security. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2481 | return PSA_ERROR_NOT_SUPPORTED; |
Steven Cooreman | 15472f8 | 2021-03-02 16:16:22 +0100 | [diff] [blame] | 2482 | } |
Gilles Peskine | ab1d7ab | 2018-07-06 16:07:47 +0200 | [diff] [blame] | 2483 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2484 | if (*mac_size > PSA_MAC_LENGTH(key_type, key_bits, |
| 2485 | PSA_ALG_FULL_LENGTH_MAC(alg))) { |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 2486 | /* It's impossible to "truncate" to a larger length than the full length |
| 2487 | * of the algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2488 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | f9f7fdf | 2021-03-03 19:04:05 +0100 | [diff] [blame] | 2489 | } |
| 2490 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2491 | if (*mac_size > PSA_MAC_MAX_SIZE) { |
Gilles Peskine | a9b6c80 | 2022-03-16 13:54:49 +0100 | [diff] [blame] | 2492 | /* PSA_MAC_LENGTH returns the correct length even for a MAC algorithm |
| 2493 | * that is disabled in the compile-time configuration. The result can |
| 2494 | * therefore be larger than PSA_MAC_MAX_SIZE, which does take the |
| 2495 | * configuration into account. In this case, force a return of |
| 2496 | * PSA_ERROR_NOT_SUPPORTED here. Otherwise psa_mac_verify(), or |
| 2497 | * psa_mac_compute(mac_size=PSA_MAC_MAX_SIZE), would return |
| 2498 | * PSA_ERROR_BUFFER_TOO_SMALL for an unsupported algorithm whose MAC size |
| 2499 | * is larger than PSA_MAC_MAX_SIZE, which is misleading and which breaks |
| 2500 | * systematically generated tests. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2501 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | a9b6c80 | 2022-03-16 13:54:49 +0100 | [diff] [blame] | 2502 | } |
| 2503 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2504 | return PSA_SUCCESS; |
Ronald Cron | 2dff3b2 | 2021-06-17 16:33:22 +0200 | [diff] [blame] | 2505 | } |
| 2506 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2507 | static psa_status_t psa_mac_setup(psa_mac_operation_t *operation, |
| 2508 | mbedtls_svc_key_id_t key, |
| 2509 | psa_algorithm_t alg, |
| 2510 | int is_sign) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 2511 | { |
| 2512 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2513 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 2514 | psa_key_slot_t *slot = NULL; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 2515 | psa_key_attributes_t attributes; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2516 | |
| 2517 | /* A context must be freshly initialized before it can be set up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2518 | if (operation->id != 0) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 2519 | status = PSA_ERROR_BAD_STATE; |
| 2520 | goto exit; |
| 2521 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2522 | |
| 2523 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2524 | key, |
| 2525 | &slot, |
| 2526 | is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE, |
| 2527 | alg); |
| 2528 | if (status != PSA_SUCCESS) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 2529 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2530 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2531 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 2532 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2533 | .core = slot->attr |
| 2534 | }; |
| 2535 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2536 | status = psa_mac_finalize_alg_and_key_validation(alg, &attributes, |
| 2537 | &operation->mac_size); |
| 2538 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2539 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2540 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2541 | |
| 2542 | operation->is_sign = is_sign; |
Steven Cooreman | e680419 | 2021-03-19 18:28:56 +0100 | [diff] [blame] | 2543 | /* Dispatch the MAC setup call with validated input */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2544 | if (is_sign) { |
| 2545 | status = psa_driver_wrapper_mac_sign_setup(operation, |
| 2546 | &attributes, |
| 2547 | slot->key.data, |
| 2548 | slot->key.bytes, |
| 2549 | alg); |
| 2550 | } else { |
| 2551 | status = psa_driver_wrapper_mac_verify_setup(operation, |
| 2552 | &attributes, |
| 2553 | slot->key.data, |
| 2554 | slot->key.bytes, |
| 2555 | alg); |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2556 | } |
Gilles Peskine | 7e454bc | 2018-06-11 17:26:17 +0200 | [diff] [blame] | 2557 | |
Gilles Peskine | fbfac68 | 2018-07-08 20:51:54 +0200 | [diff] [blame] | 2558 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2559 | if (status != PSA_SUCCESS) { |
| 2560 | psa_mac_abort(operation); |
| 2561 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2562 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2563 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 2564 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2565 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2566 | } |
| 2567 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2568 | psa_status_t psa_mac_sign_setup(psa_mac_operation_t *operation, |
| 2569 | mbedtls_svc_key_id_t key, |
| 2570 | psa_algorithm_t alg) |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2571 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2572 | return psa_mac_setup(operation, key, alg, 1); |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2573 | } |
| 2574 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2575 | psa_status_t psa_mac_verify_setup(psa_mac_operation_t *operation, |
| 2576 | mbedtls_svc_key_id_t key, |
| 2577 | psa_algorithm_t alg) |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2578 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2579 | return psa_mac_setup(operation, key, alg, 0); |
Gilles Peskine | 89167cb | 2018-07-08 20:12:23 +0200 | [diff] [blame] | 2580 | } |
| 2581 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2582 | psa_status_t psa_mac_update(psa_mac_operation_t *operation, |
| 2583 | const uint8_t *input, |
| 2584 | size_t input_length) |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2585 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2586 | if (operation->id == 0) { |
| 2587 | return PSA_ERROR_BAD_STATE; |
| 2588 | } |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2589 | |
Steven Cooreman | 6e7f291 | 2021-03-19 18:38:46 +0100 | [diff] [blame] | 2590 | /* Don't require hash implementations to behave correctly on a |
| 2591 | * zero-length input, which may have an invalid pointer. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2592 | if (input_length == 0) { |
| 2593 | return PSA_SUCCESS; |
| 2594 | } |
Nir Sonnenschein | dcd636a | 2018-06-04 16:03:32 +0300 | [diff] [blame] | 2595 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2596 | psa_status_t status = psa_driver_wrapper_mac_update(operation, |
| 2597 | input, input_length); |
| 2598 | if (status != PSA_SUCCESS) { |
| 2599 | psa_mac_abort(operation); |
| 2600 | } |
Steven Cooreman | 6e7f291 | 2021-03-19 18:38:46 +0100 | [diff] [blame] | 2601 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2602 | return status; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2603 | } |
| 2604 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2605 | psa_status_t psa_mac_sign_finish(psa_mac_operation_t *operation, |
| 2606 | uint8_t *mac, |
| 2607 | size_t mac_size, |
| 2608 | size_t *mac_length) |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2609 | { |
Steven Cooreman | a5b860a | 2021-03-19 19:04:39 +0100 | [diff] [blame] | 2610 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2611 | psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED; |
Steven Cooreman | 77e2cc5 | 2021-03-19 17:05:52 +0100 | [diff] [blame] | 2612 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2613 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2614 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2615 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2616 | } |
Jaeden Amero | 252ef28 | 2019-02-15 14:05:35 +0000 | [diff] [blame] | 2617 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2618 | if (!operation->is_sign) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2619 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2620 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2621 | } |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2622 | |
Steven Cooreman | 8af5c5c | 2021-05-11 11:09:13 +0200 | [diff] [blame] | 2623 | /* Sanity check. This will guarantee that mac_size != 0 (and so mac != NULL) |
| 2624 | * once all the error checks are done. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2625 | if (operation->mac_size == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2626 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2627 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2628 | } |
Steven Cooreman | 8af5c5c | 2021-05-11 11:09:13 +0200 | [diff] [blame] | 2629 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2630 | if (mac_size < operation->mac_size) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2631 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2632 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2633 | } |
Gilles Peskine | 5d0b864 | 2018-07-08 20:35:02 +0200 | [diff] [blame] | 2634 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2635 | status = psa_driver_wrapper_mac_sign_finish(operation, |
| 2636 | mac, operation->mac_size, |
| 2637 | mac_length); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2638 | |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2639 | exit: |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2640 | /* In case of success, set the potential excess room in the output buffer |
| 2641 | * to an invalid value, to avoid potentially leaking a longer MAC. |
| 2642 | * In case of error, set the output length and content to a safe default, |
| 2643 | * such that in case the caller misses an error check, the output would be |
| 2644 | * an unachievable MAC. |
| 2645 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2646 | if (status != PSA_SUCCESS) { |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2647 | *mac_length = mac_size; |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2648 | operation->mac_size = 0; |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2649 | } |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2650 | |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 2651 | psa_wipe_tag_output_buffer(mac, status, mac_size, *mac_length); |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2652 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2653 | abort_status = psa_mac_abort(operation); |
Gilles Peskine | 5d0b864 | 2018-07-08 20:35:02 +0200 | [diff] [blame] | 2654 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2655 | return status == PSA_SUCCESS ? abort_status : status; |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2656 | } |
| 2657 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2658 | psa_status_t psa_mac_verify_finish(psa_mac_operation_t *operation, |
| 2659 | const uint8_t *mac, |
| 2660 | size_t mac_length) |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2661 | { |
Steven Cooreman | a5b860a | 2021-03-19 19:04:39 +0100 | [diff] [blame] | 2662 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2663 | psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED; |
Steven Cooreman | 77e2cc5 | 2021-03-19 17:05:52 +0100 | [diff] [blame] | 2664 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2665 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2666 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2667 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2668 | } |
Jaeden Amero | 252ef28 | 2019-02-15 14:05:35 +0000 | [diff] [blame] | 2669 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2670 | if (operation->is_sign) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2671 | status = PSA_ERROR_BAD_STATE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2672 | goto exit; |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 2673 | } |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2674 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2675 | if (operation->mac_size != mac_length) { |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2676 | status = PSA_ERROR_INVALID_SIGNATURE; |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2677 | goto exit; |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2678 | } |
| 2679 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2680 | status = psa_driver_wrapper_mac_verify_finish(operation, |
| 2681 | mac, mac_length); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 2682 | |
Dave Rodgman | 90d1cb8 | 2021-06-25 09:09:02 +0100 | [diff] [blame] | 2683 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2684 | abort_status = psa_mac_abort(operation); |
mohammad1603 | 6df908f | 2018-04-02 08:34:15 -0700 | [diff] [blame] | 2685 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2686 | return status == PSA_SUCCESS ? abort_status : status; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2687 | } |
| 2688 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2689 | static psa_status_t psa_mac_compute_internal(mbedtls_svc_key_id_t key, |
| 2690 | psa_algorithm_t alg, |
| 2691 | const uint8_t *input, |
| 2692 | size_t input_length, |
| 2693 | uint8_t *mac, |
| 2694 | size_t mac_size, |
| 2695 | size_t *mac_length, |
| 2696 | int is_sign) |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2697 | { |
| 2698 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2699 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2700 | psa_key_slot_t *slot; |
| 2701 | uint8_t operation_mac_size = 0; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 2702 | psa_key_attributes_t attributes; |
Gilles Peskine | 8c9def3 | 2018-02-08 10:02:12 +0100 | [diff] [blame] | 2703 | |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2704 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2705 | key, |
| 2706 | &slot, |
| 2707 | is_sign ? PSA_KEY_USAGE_SIGN_MESSAGE : PSA_KEY_USAGE_VERIFY_MESSAGE, |
| 2708 | alg); |
| 2709 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2710 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2711 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2712 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 2713 | attributes = (psa_key_attributes_t) { |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2714 | .core = slot->attr |
| 2715 | }; |
| 2716 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2717 | status = psa_mac_finalize_alg_and_key_validation(alg, &attributes, |
| 2718 | &operation_mac_size); |
| 2719 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2720 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2721 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2722 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2723 | if (mac_size < operation_mac_size) { |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2724 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2725 | goto exit; |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2726 | } |
| 2727 | |
| 2728 | status = psa_driver_wrapper_mac_compute( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2729 | &attributes, |
| 2730 | slot->key.data, slot->key.bytes, |
| 2731 | alg, |
| 2732 | input, input_length, |
| 2733 | mac, operation_mac_size, mac_length); |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2734 | |
| 2735 | exit: |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2736 | /* In case of success, set the potential excess room in the output buffer |
| 2737 | * to an invalid value, to avoid potentially leaking a longer MAC. |
| 2738 | * In case of error, set the output length and content to a safe default, |
| 2739 | * such that in case the caller misses an error check, the output would be |
| 2740 | * an unachievable MAC. |
| 2741 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2742 | if (status != PSA_SUCCESS) { |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2743 | *mac_length = mac_size; |
Ronald Cron | c3dd75f | 2021-06-18 13:05:48 +0200 | [diff] [blame] | 2744 | operation_mac_size = 0; |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2745 | } |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 2746 | |
| 2747 | psa_wipe_tag_output_buffer(mac, status, mac_size, *mac_length); |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2748 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2749 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | 51131b5 | 2021-06-17 17:17:20 +0200 | [diff] [blame] | 2750 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2751 | return (status == PSA_SUCCESS) ? unlock_status : status; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2752 | } |
| 2753 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2754 | 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] | 2755 | psa_algorithm_t alg, |
| 2756 | const uint8_t *input, |
| 2757 | size_t input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2758 | uint8_t *mac, |
| 2759 | size_t mac_size, |
| 2760 | size_t *mac_length) |
| 2761 | { |
| 2762 | return psa_mac_compute_internal(key, alg, |
| 2763 | input, input_length, |
| 2764 | mac, mac_size, mac_length, 1); |
| 2765 | } |
| 2766 | |
| 2767 | psa_status_t psa_mac_verify(mbedtls_svc_key_id_t key, |
| 2768 | psa_algorithm_t alg, |
| 2769 | const uint8_t *input, |
| 2770 | size_t input_length, |
| 2771 | const uint8_t *mac, |
| 2772 | size_t mac_length) |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2773 | { |
| 2774 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2775 | uint8_t actual_mac[PSA_MAC_MAX_SIZE]; |
| 2776 | size_t actual_mac_length; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2777 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2778 | status = psa_mac_compute_internal(key, alg, |
| 2779 | input, input_length, |
| 2780 | actual_mac, sizeof(actual_mac), |
| 2781 | &actual_mac_length, 0); |
| 2782 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2783 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2784 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2785 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2786 | if (mac_length != actual_mac_length) { |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2787 | status = PSA_ERROR_INVALID_SIGNATURE; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2788 | goto exit; |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2789 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2790 | if (mbedtls_psa_safer_memcmp(mac, actual_mac, actual_mac_length) != 0) { |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2791 | status = PSA_ERROR_INVALID_SIGNATURE; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2792 | goto exit; |
Ronald Cron | a587cbc | 2021-06-18 14:51:29 +0200 | [diff] [blame] | 2793 | } |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2794 | |
| 2795 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2796 | mbedtls_platform_zeroize(actual_mac, sizeof(actual_mac)); |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2797 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2798 | return status; |
gabor-mezei-arm | 4076d3e | 2021-03-01 15:34:18 +0100 | [diff] [blame] | 2799 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 2800 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 2801 | /****************************************************************/ |
| 2802 | /* Asymmetric cryptography */ |
| 2803 | /****************************************************************/ |
| 2804 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2805 | static psa_status_t psa_sign_verify_check_alg(int input_is_message, |
| 2806 | psa_algorithm_t alg) |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2807 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2808 | if (input_is_message) { |
| 2809 | if (!PSA_ALG_IS_SIGN_MESSAGE(alg)) { |
| 2810 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2811 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2812 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2813 | if (PSA_ALG_IS_SIGN_HASH(alg)) { |
| 2814 | if (!PSA_ALG_IS_HASH(PSA_ALG_SIGN_GET_HASH(alg))) { |
| 2815 | return PSA_ERROR_INVALID_ARGUMENT; |
| 2816 | } |
| 2817 | } |
| 2818 | } else { |
| 2819 | if (!PSA_ALG_IS_SIGN_HASH(alg)) { |
| 2820 | return PSA_ERROR_INVALID_ARGUMENT; |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2821 | } |
| 2822 | } |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2823 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2824 | return PSA_SUCCESS; |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2825 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2826 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2827 | static psa_status_t psa_sign_internal(mbedtls_svc_key_id_t key, |
| 2828 | int input_is_message, |
| 2829 | psa_algorithm_t alg, |
| 2830 | const uint8_t *input, |
| 2831 | size_t input_length, |
| 2832 | uint8_t *signature, |
| 2833 | size_t signature_size, |
| 2834 | size_t *signature_length) |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2835 | { |
| 2836 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2837 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2838 | psa_key_slot_t *slot; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 2839 | psa_key_attributes_t attributes; |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2840 | |
| 2841 | *signature_length = 0; |
| 2842 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2843 | status = psa_sign_verify_check_alg(input_is_message, alg); |
| 2844 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2845 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2846 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2847 | |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2848 | /* Immediately reject a zero-length signature buffer. This guarantees |
gabor-mezei-arm | 12b4f34 | 2021-05-05 13:54:55 +0200 | [diff] [blame] | 2849 | * 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] | 2850 | * buffer can in principle be empty since it doesn't actually have |
| 2851 | * to be a hash.) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2852 | if (signature_size == 0) { |
| 2853 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 2854 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2855 | |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2856 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2857 | key, &slot, |
| 2858 | input_is_message ? PSA_KEY_USAGE_SIGN_MESSAGE : |
| 2859 | PSA_KEY_USAGE_SIGN_HASH, |
| 2860 | alg); |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2861 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2862 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2863 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2864 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2865 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2866 | if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) { |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2867 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 2868 | goto exit; |
| 2869 | } |
| 2870 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 2871 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2872 | .core = slot->attr |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2873 | }; |
| 2874 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2875 | if (input_is_message) { |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2876 | status = psa_driver_wrapper_sign_message( |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2877 | &attributes, slot->key.data, slot->key.bytes, |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2878 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2879 | signature, signature_size, signature_length); |
| 2880 | } else { |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2881 | |
| 2882 | status = psa_driver_wrapper_sign_hash( |
| 2883 | &attributes, slot->key.data, slot->key.bytes, |
| 2884 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2885 | signature, signature_size, signature_length); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2886 | } |
| 2887 | |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2888 | |
| 2889 | exit: |
Paul Elliott | 59200a2 | 2023-02-21 15:07:40 +0000 | [diff] [blame] | 2890 | psa_wipe_tag_output_buffer(signature, status, signature_size, |
| 2891 | *signature_length); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2892 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2893 | unlock_status = psa_unlock_key_slot(slot); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2894 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2895 | return (status == PSA_SUCCESS) ? unlock_status : status; |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2896 | } |
| 2897 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2898 | static psa_status_t psa_verify_internal(mbedtls_svc_key_id_t key, |
| 2899 | int input_is_message, |
| 2900 | psa_algorithm_t alg, |
| 2901 | const uint8_t *input, |
| 2902 | size_t input_length, |
| 2903 | const uint8_t *signature, |
| 2904 | size_t signature_length) |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2905 | { |
| 2906 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2907 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 2908 | psa_key_slot_t *slot; |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2909 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2910 | status = psa_sign_verify_check_alg(input_is_message, alg); |
| 2911 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2912 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2913 | } |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2914 | |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2915 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2916 | key, &slot, |
| 2917 | input_is_message ? PSA_KEY_USAGE_VERIFY_MESSAGE : |
| 2918 | PSA_KEY_USAGE_VERIFY_HASH, |
| 2919 | alg); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2920 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2921 | if (status != PSA_SUCCESS) { |
| 2922 | return status; |
| 2923 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2924 | |
| 2925 | psa_key_attributes_t attributes = { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2926 | .core = slot->attr |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2927 | }; |
| 2928 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2929 | if (input_is_message) { |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2930 | status = psa_driver_wrapper_verify_message( |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2931 | &attributes, slot->key.data, slot->key.bytes, |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2932 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2933 | signature, signature_length); |
| 2934 | } else { |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2935 | status = psa_driver_wrapper_verify_hash( |
| 2936 | &attributes, slot->key.data, slot->key.bytes, |
| 2937 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2938 | signature, signature_length); |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2939 | } |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2940 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2941 | unlock_status = psa_unlock_key_slot(slot); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 2942 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2943 | return (status == PSA_SUCCESS) ? unlock_status : status; |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2944 | |
| 2945 | } |
| 2946 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 2947 | psa_status_t psa_sign_message_builtin( |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2948 | const psa_key_attributes_t *attributes, |
| 2949 | const uint8_t *key_buffer, |
| 2950 | size_t key_buffer_size, |
| 2951 | psa_algorithm_t alg, |
| 2952 | const uint8_t *input, |
| 2953 | size_t input_length, |
| 2954 | uint8_t *signature, |
| 2955 | size_t signature_size, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2956 | size_t *signature_length) |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2957 | { |
| 2958 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2959 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2960 | if (PSA_ALG_IS_SIGN_HASH(alg)) { |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 2961 | size_t hash_length; |
| 2962 | uint8_t hash[PSA_HASH_MAX_SIZE]; |
| 2963 | |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 2964 | status = psa_driver_wrapper_hash_compute( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2965 | PSA_ALG_SIGN_GET_HASH(alg), |
| 2966 | input, input_length, |
| 2967 | hash, sizeof(hash), &hash_length); |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2968 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2969 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 2970 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2971 | } |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 2972 | |
| 2973 | return psa_driver_wrapper_sign_hash( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2974 | attributes, key_buffer, key_buffer_size, |
| 2975 | alg, hash, hash_length, |
| 2976 | signature, signature_size, signature_length); |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 2977 | } |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2978 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2979 | return PSA_ERROR_NOT_SUPPORTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2980 | } |
| 2981 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2982 | psa_status_t psa_sign_message(mbedtls_svc_key_id_t key, |
| 2983 | psa_algorithm_t alg, |
| 2984 | const uint8_t *input, |
| 2985 | size_t input_length, |
| 2986 | uint8_t *signature, |
| 2987 | size_t signature_size, |
| 2988 | size_t *signature_length) |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2989 | { |
| 2990 | return psa_sign_internal( |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 2991 | key, 1, alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 2992 | signature, signature_size, signature_length); |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 2993 | } |
| 2994 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 2995 | psa_status_t psa_verify_message_builtin( |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 2996 | const psa_key_attributes_t *attributes, |
| 2997 | const uint8_t *key_buffer, |
| 2998 | size_t key_buffer_size, |
| 2999 | psa_algorithm_t alg, |
| 3000 | const uint8_t *input, |
| 3001 | size_t input_length, |
| 3002 | const uint8_t *signature, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3003 | size_t signature_length) |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3004 | { |
| 3005 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3006 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3007 | if (PSA_ALG_IS_SIGN_HASH(alg)) { |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 3008 | size_t hash_length; |
| 3009 | uint8_t hash[PSA_HASH_MAX_SIZE]; |
| 3010 | |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3011 | status = psa_driver_wrapper_hash_compute( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3012 | PSA_ALG_SIGN_GET_HASH(alg), |
| 3013 | input, input_length, |
| 3014 | hash, sizeof(hash), &hash_length); |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3015 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3016 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3017 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3018 | } |
gabor-mezei-arm | f9820f9 | 2021-05-03 16:26:20 +0200 | [diff] [blame] | 3019 | |
| 3020 | return psa_driver_wrapper_verify_hash( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3021 | attributes, key_buffer, key_buffer_size, |
| 3022 | alg, hash, hash_length, |
| 3023 | signature, signature_length); |
gabor-mezei-arm | 0f62240 | 2021-04-29 16:48:44 +0200 | [diff] [blame] | 3024 | } |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3025 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3026 | return PSA_ERROR_NOT_SUPPORTED; |
gabor-mezei-arm | 50eac35 | 2021-04-22 11:32:19 +0200 | [diff] [blame] | 3027 | } |
| 3028 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3029 | psa_status_t psa_verify_message(mbedtls_svc_key_id_t key, |
| 3030 | psa_algorithm_t alg, |
| 3031 | const uint8_t *input, |
| 3032 | size_t input_length, |
| 3033 | const uint8_t *signature, |
| 3034 | size_t signature_length) |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3035 | { |
| 3036 | return psa_verify_internal( |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 3037 | key, 1, alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3038 | signature, signature_length); |
gabor-mezei-arm | 4a21019 | 2021-04-14 21:14:28 +0200 | [diff] [blame] | 3039 | } |
| 3040 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 3041 | psa_status_t psa_sign_hash_builtin( |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3042 | const psa_key_attributes_t *attributes, |
| 3043 | const uint8_t *key_buffer, size_t key_buffer_size, |
| 3044 | psa_algorithm_t alg, const uint8_t *hash, size_t hash_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3045 | uint8_t *signature, size_t signature_size, size_t *signature_length) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3046 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3047 | if (attributes->core.type == PSA_KEY_TYPE_RSA_KEY_PAIR) { |
| 3048 | if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) || |
| 3049 | PSA_ALG_IS_RSA_PSS(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3050 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3051 | defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) |
| 3052 | return mbedtls_psa_rsa_sign_hash( |
| 3053 | attributes, |
| 3054 | key_buffer, key_buffer_size, |
| 3055 | alg, hash, hash_length, |
| 3056 | signature, signature_size, signature_length); |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3057 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || |
| 3058 | * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3059 | } else { |
| 3060 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | acda834 | 2020-07-24 23:09:52 +0200 | [diff] [blame] | 3061 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3062 | } else if (PSA_KEY_TYPE_IS_ECC(attributes->core.type)) { |
| 3063 | if (PSA_ALG_IS_ECDSA(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3064 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3065 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) |
| 3066 | return mbedtls_psa_ecdsa_sign_hash( |
| 3067 | attributes, |
| 3068 | key_buffer, key_buffer_size, |
| 3069 | alg, hash, hash_length, |
| 3070 | signature, signature_size, signature_length); |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3071 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3072 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3073 | } else { |
| 3074 | return PSA_ERROR_INVALID_ARGUMENT; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3075 | } |
Ronald Cron | 8a494f3 | 2021-02-17 09:49:51 +0100 | [diff] [blame] | 3076 | } |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3077 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3078 | (void) key_buffer; |
| 3079 | (void) key_buffer_size; |
| 3080 | (void) hash; |
| 3081 | (void) hash_length; |
| 3082 | (void) signature; |
| 3083 | (void) signature_size; |
| 3084 | (void) signature_length; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3085 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3086 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3087 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3088 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3089 | psa_status_t psa_sign_hash(mbedtls_svc_key_id_t key, |
| 3090 | psa_algorithm_t alg, |
| 3091 | const uint8_t *hash, |
| 3092 | size_t hash_length, |
| 3093 | uint8_t *signature, |
| 3094 | size_t signature_size, |
| 3095 | size_t *signature_length) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3096 | { |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3097 | return psa_sign_internal( |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 3098 | key, 0, alg, hash, hash_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3099 | signature, signature_size, signature_length); |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 3100 | } |
| 3101 | |
gabor-mezei-arm | 6883fd2 | 2021-05-05 14:18:36 +0200 | [diff] [blame] | 3102 | psa_status_t psa_verify_hash_builtin( |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3103 | const psa_key_attributes_t *attributes, |
| 3104 | const uint8_t *key_buffer, size_t key_buffer_size, |
| 3105 | psa_algorithm_t alg, const uint8_t *hash, size_t hash_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3106 | const uint8_t *signature, size_t signature_length) |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 3107 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3108 | if (PSA_KEY_TYPE_IS_RSA(attributes->core.type)) { |
| 3109 | if (PSA_ALG_IS_RSA_PKCS1V15_SIGN(alg) || |
| 3110 | PSA_ALG_IS_RSA_PSS(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3111 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3112 | defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) |
| 3113 | return mbedtls_psa_rsa_verify_hash( |
| 3114 | attributes, |
| 3115 | key_buffer, key_buffer_size, |
| 3116 | alg, hash, hash_length, |
| 3117 | signature, signature_length); |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3118 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PKCS1V15_SIGN) || |
| 3119 | * defined(MBEDTLS_PSA_BUILTIN_ALG_RSA_PSS) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3120 | } else { |
| 3121 | return PSA_ERROR_INVALID_ARGUMENT; |
Steven Cooreman | acda834 | 2020-07-24 23:09:52 +0200 | [diff] [blame] | 3122 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3123 | } else if (PSA_KEY_TYPE_IS_ECC(attributes->core.type)) { |
| 3124 | if (PSA_ALG_IS_ECDSA(alg)) { |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3125 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3126 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) |
| 3127 | return mbedtls_psa_ecdsa_verify_hash( |
| 3128 | attributes, |
| 3129 | key_buffer, key_buffer_size, |
| 3130 | alg, hash, hash_length, |
| 3131 | signature, signature_length); |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3132 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3133 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3134 | } else { |
| 3135 | return PSA_ERROR_INVALID_ARGUMENT; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3136 | } |
Ronald Cron | 8a494f3 | 2021-02-17 09:49:51 +0100 | [diff] [blame] | 3137 | } |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3138 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3139 | (void) key_buffer; |
| 3140 | (void) key_buffer_size; |
| 3141 | (void) hash; |
| 3142 | (void) hash_length; |
| 3143 | (void) signature; |
| 3144 | (void) signature_length; |
Ronald Cron | 4501c98 | 2021-03-19 20:09:32 +0100 | [diff] [blame] | 3145 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3146 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 1865993 | 2020-12-08 16:32:23 +0100 | [diff] [blame] | 3147 | } |
| 3148 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3149 | psa_status_t psa_verify_hash(mbedtls_svc_key_id_t key, |
| 3150 | psa_algorithm_t alg, |
| 3151 | const uint8_t *hash, |
| 3152 | size_t hash_length, |
| 3153 | const uint8_t *signature, |
| 3154 | size_t signature_length) |
itayzafrir | 5c75339 | 2018-05-08 11:18:38 +0300 | [diff] [blame] | 3155 | { |
gabor-mezei-arm | 5b44652 | 2021-04-20 12:11:35 +0200 | [diff] [blame] | 3156 | return psa_verify_internal( |
gabor-mezei-arm | 8b3e886 | 2021-05-05 13:56:27 +0200 | [diff] [blame] | 3157 | key, 0, alg, hash, hash_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3158 | signature, signature_length); |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3159 | } |
| 3160 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3161 | psa_status_t psa_asymmetric_encrypt(mbedtls_svc_key_id_t key, |
| 3162 | psa_algorithm_t alg, |
| 3163 | const uint8_t *input, |
| 3164 | size_t input_length, |
| 3165 | const uint8_t *salt, |
| 3166 | size_t salt_length, |
| 3167 | uint8_t *output, |
| 3168 | size_t output_size, |
| 3169 | size_t *output_length) |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3170 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3171 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 3172 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 3173 | psa_key_slot_t *slot; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 3174 | psa_key_attributes_t attributes; |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 3175 | |
Darryl Green | 5cc689a | 2018-07-24 15:34:10 +0100 | [diff] [blame] | 3176 | (void) input; |
| 3177 | (void) input_length; |
| 3178 | (void) salt; |
| 3179 | (void) output; |
| 3180 | (void) output_size; |
| 3181 | |
Nir Sonnenschein | ca466c8 | 2018-06-04 16:43:12 +0300 | [diff] [blame] | 3182 | *output_length = 0; |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3183 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3184 | if (!PSA_ALG_IS_RSA_OAEP(alg) && salt_length != 0) { |
| 3185 | return PSA_ERROR_INVALID_ARGUMENT; |
| 3186 | } |
Gilles Peskine | b3fc05d | 2018-06-30 19:04:35 +0200 | [diff] [blame] | 3187 | |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 3188 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3189 | key, &slot, PSA_KEY_USAGE_ENCRYPT, alg); |
| 3190 | if (status != PSA_SUCCESS) { |
| 3191 | return status; |
| 3192 | } |
| 3193 | if (!(PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type) || |
| 3194 | PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type))) { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3195 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 3196 | goto exit; |
| 3197 | } |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3198 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 3199 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3200 | .core = slot->attr |
Przemyslaw Stekiel | 19e6142 | 2021-12-09 11:09:11 +0100 | [diff] [blame] | 3201 | }; |
Steven Cooreman | a2371e5 | 2020-07-28 14:30:39 +0200 | [diff] [blame] | 3202 | |
Przemyslaw Stekiel | 19e6142 | 2021-12-09 11:09:11 +0100 | [diff] [blame] | 3203 | status = psa_driver_wrapper_asymmetric_encrypt( |
| 3204 | &attributes, slot->key.data, slot->key.bytes, |
| 3205 | alg, input, input_length, salt, salt_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3206 | output, output_size, output_length); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3207 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3208 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3209 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3210 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 5b051bc | 2018-05-31 13:25:48 +0200 | [diff] [blame] | 3211 | } |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3212 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3213 | psa_status_t psa_asymmetric_decrypt(mbedtls_svc_key_id_t key, |
| 3214 | psa_algorithm_t alg, |
| 3215 | const uint8_t *input, |
| 3216 | size_t input_length, |
| 3217 | const uint8_t *salt, |
| 3218 | size_t salt_length, |
| 3219 | uint8_t *output, |
| 3220 | size_t output_size, |
| 3221 | size_t *output_length) |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3222 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3223 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 3224 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 3225 | psa_key_slot_t *slot; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 3226 | psa_key_attributes_t attributes; |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 3227 | |
Darryl Green | 5cc689a | 2018-07-24 15:34:10 +0100 | [diff] [blame] | 3228 | (void) input; |
| 3229 | (void) input_length; |
| 3230 | (void) salt; |
| 3231 | (void) output; |
| 3232 | (void) output_size; |
| 3233 | |
Nir Sonnenschein | ca466c8 | 2018-06-04 16:43:12 +0300 | [diff] [blame] | 3234 | *output_length = 0; |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3235 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3236 | if (!PSA_ALG_IS_RSA_OAEP(alg) && salt_length != 0) { |
| 3237 | return PSA_ERROR_INVALID_ARGUMENT; |
| 3238 | } |
Gilles Peskine | b3fc05d | 2018-06-30 19:04:35 +0200 | [diff] [blame] | 3239 | |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 3240 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3241 | key, &slot, PSA_KEY_USAGE_DECRYPT, alg); |
| 3242 | if (status != PSA_SUCCESS) { |
| 3243 | return status; |
| 3244 | } |
| 3245 | if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3246 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 3247 | goto exit; |
| 3248 | } |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3249 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 3250 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3251 | .core = slot->attr |
Przemyslaw Stekiel | 8d45c00 | 2021-12-13 08:58:19 +0100 | [diff] [blame] | 3252 | }; |
Nir Sonnenschein | 39e5914 | 2018-05-02 23:16:26 +0300 | [diff] [blame] | 3253 | |
Przemyslaw Stekiel | 8d45c00 | 2021-12-13 08:58:19 +0100 | [diff] [blame] | 3254 | status = psa_driver_wrapper_asymmetric_decrypt( |
| 3255 | &attributes, slot->key.data, slot->key.bytes, |
| 3256 | alg, input, input_length, salt, salt_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3257 | output, output_size, output_length); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3258 | |
| 3259 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3260 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 3261 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 3262 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 5b051bc | 2018-05-31 13:25:48 +0200 | [diff] [blame] | 3263 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 3264 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3265 | /****************************************************************/ |
| 3266 | /* Asymmetric interruptible cryptography */ |
| 3267 | /****************************************************************/ |
| 3268 | |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3269 | static uint32_t psa_interruptible_max_ops = PSA_INTERRUPTIBLE_MAX_OPS_UNLIMITED; |
| 3270 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3271 | void psa_interruptible_set_max_ops(uint32_t max_ops) |
| 3272 | { |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3273 | psa_interruptible_max_ops = max_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3274 | } |
| 3275 | |
| 3276 | uint32_t psa_interruptible_get_max_ops(void) |
| 3277 | { |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3278 | return psa_interruptible_max_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3279 | } |
| 3280 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3281 | uint32_t psa_sign_hash_get_num_ops( |
| 3282 | const psa_sign_hash_interruptible_operation_t *operation) |
| 3283 | { |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3284 | return operation->num_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3285 | } |
| 3286 | |
| 3287 | uint32_t psa_verify_hash_get_num_ops( |
| 3288 | const psa_verify_hash_interruptible_operation_t *operation) |
| 3289 | { |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3290 | return operation->num_ops; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3291 | } |
| 3292 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3293 | static psa_status_t psa_sign_hash_abort_internal( |
| 3294 | psa_sign_hash_interruptible_operation_t *operation) |
| 3295 | { |
| 3296 | if (operation->id == 0) { |
| 3297 | /* The object has (apparently) been initialized but it is not (yet) |
| 3298 | * in use. It's ok to call abort on such an object, and there's |
| 3299 | * nothing to do. */ |
| 3300 | return PSA_SUCCESS; |
| 3301 | } |
| 3302 | |
| 3303 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3304 | |
| 3305 | status = psa_driver_wrapper_sign_hash_abort(operation); |
| 3306 | |
| 3307 | operation->id = 0; |
| 3308 | |
Paul Elliott | e6145dc | 2023-02-07 12:51:21 +0000 | [diff] [blame] | 3309 | /* Do not clear either the error_occurred or num_ops elements here as they |
| 3310 | * only want to be cleared by the application calling abort, not by abort |
| 3311 | * being called at completion of an operation. */ |
| 3312 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3313 | return status; |
| 3314 | } |
| 3315 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3316 | psa_status_t psa_sign_hash_start( |
| 3317 | psa_sign_hash_interruptible_operation_t *operation, |
| 3318 | mbedtls_svc_key_id_t key, psa_algorithm_t alg, |
| 3319 | const uint8_t *hash, size_t hash_length) |
| 3320 | { |
| 3321 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3322 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3323 | psa_key_slot_t *slot; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 3324 | psa_key_attributes_t attributes; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3325 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3326 | /* Check that start has not been previously called, or operation has not |
| 3327 | * previously errored. */ |
| 3328 | if (operation->id != 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3329 | return PSA_ERROR_BAD_STATE; |
| 3330 | } |
| 3331 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3332 | status = psa_sign_verify_check_alg(0, alg); |
| 3333 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3334 | operation->error_occurred = 1; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3335 | return status; |
| 3336 | } |
| 3337 | |
| 3338 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 3339 | PSA_KEY_USAGE_SIGN_HASH, |
| 3340 | alg); |
| 3341 | |
| 3342 | if (status != PSA_SUCCESS) { |
| 3343 | goto exit; |
| 3344 | } |
| 3345 | |
| 3346 | if (!PSA_KEY_TYPE_IS_KEY_PAIR(slot->attr.type)) { |
| 3347 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 3348 | goto exit; |
| 3349 | } |
| 3350 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 3351 | attributes = (psa_key_attributes_t) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3352 | .core = slot->attr |
| 3353 | }; |
| 3354 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3355 | /* Ensure ops count gets reset, in case of operation re-use. */ |
| 3356 | operation->num_ops = 0; |
| 3357 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3358 | status = psa_driver_wrapper_sign_hash_start(operation, &attributes, |
| 3359 | slot->key.data, |
| 3360 | slot->key.bytes, alg, |
| 3361 | hash, hash_length); |
| 3362 | exit: |
| 3363 | |
| 3364 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3365 | operation->error_occurred = 1; |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3366 | psa_sign_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3367 | } |
| 3368 | |
| 3369 | unlock_status = psa_unlock_key_slot(slot); |
| 3370 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3371 | if (unlock_status != PSA_SUCCESS) { |
| 3372 | operation->error_occurred = 1; |
| 3373 | } |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3374 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3375 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3376 | } |
| 3377 | |
| 3378 | |
| 3379 | psa_status_t psa_sign_hash_complete( |
| 3380 | psa_sign_hash_interruptible_operation_t *operation, |
| 3381 | uint8_t *signature, size_t signature_size, |
| 3382 | size_t *signature_length) |
| 3383 | { |
| 3384 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3385 | |
| 3386 | *signature_length = 0; |
| 3387 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3388 | /* Check that start has been called first, and that operation has not |
| 3389 | * previously errored. */ |
| 3390 | if (operation->id == 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3391 | status = PSA_ERROR_BAD_STATE; |
| 3392 | goto exit; |
| 3393 | } |
| 3394 | |
Paul Elliott | 096abc4 | 2023-02-03 18:33:23 +0000 | [diff] [blame] | 3395 | /* Immediately reject a zero-length signature buffer. This guarantees that |
| 3396 | * signature must be a valid pointer. */ |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3397 | if (signature_size == 0) { |
| 3398 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 3399 | goto exit; |
| 3400 | } |
| 3401 | |
| 3402 | status = psa_driver_wrapper_sign_hash_complete(operation, signature, |
| 3403 | signature_size, |
| 3404 | signature_length); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3405 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3406 | /* Update ops count with work done. */ |
Paul Elliott | de1114c | 2023-02-07 12:43:11 +0000 | [diff] [blame] | 3407 | operation->num_ops = psa_driver_wrapper_sign_hash_get_num_ops(operation); |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3408 | |
Paul Elliott | ebe225c | 2023-02-10 14:32:53 +0000 | [diff] [blame] | 3409 | exit: |
| 3410 | |
Paul Elliott | 59200a2 | 2023-02-21 15:07:40 +0000 | [diff] [blame] | 3411 | psa_wipe_tag_output_buffer(signature, status, signature_size, |
| 3412 | *signature_length); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3413 | |
Paul Elliott | 53bb312 | 2023-02-10 14:22:22 +0000 | [diff] [blame] | 3414 | if (status != PSA_OPERATION_INCOMPLETE) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3415 | if (status != PSA_SUCCESS) { |
| 3416 | operation->error_occurred = 1; |
| 3417 | } |
| 3418 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3419 | psa_sign_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3420 | } |
| 3421 | |
| 3422 | return status; |
| 3423 | } |
| 3424 | |
| 3425 | psa_status_t psa_sign_hash_abort( |
| 3426 | psa_sign_hash_interruptible_operation_t *operation) |
| 3427 | { |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3428 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3429 | |
| 3430 | status = psa_sign_hash_abort_internal(operation); |
| 3431 | |
| 3432 | /* We clear the number of ops done here, so that it is not cleared when |
| 3433 | * the operation fails or succeeds, only on manual abort. */ |
| 3434 | operation->num_ops = 0; |
| 3435 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3436 | /* Likewise, failure state. */ |
| 3437 | operation->error_occurred = 0; |
| 3438 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3439 | return status; |
| 3440 | } |
| 3441 | |
| 3442 | static psa_status_t psa_verify_hash_abort_internal( |
| 3443 | psa_verify_hash_interruptible_operation_t *operation) |
| 3444 | { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3445 | if (operation->id == 0) { |
| 3446 | /* The object has (apparently) been initialized but it is not (yet) |
| 3447 | * in use. It's ok to call abort on such an object, and there's |
| 3448 | * nothing to do. */ |
| 3449 | return PSA_SUCCESS; |
| 3450 | } |
| 3451 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3452 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3453 | |
| 3454 | status = psa_driver_wrapper_verify_hash_abort(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3455 | |
| 3456 | operation->id = 0; |
| 3457 | |
Paul Elliott | e6145dc | 2023-02-07 12:51:21 +0000 | [diff] [blame] | 3458 | /* Do not clear either the error_occurred or num_ops elements here as they |
| 3459 | * only want to be cleared by the application calling abort, not by abort |
| 3460 | * being called at completion of an operation. */ |
| 3461 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3462 | return status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3463 | } |
| 3464 | |
| 3465 | psa_status_t psa_verify_hash_start( |
| 3466 | psa_verify_hash_interruptible_operation_t *operation, |
| 3467 | mbedtls_svc_key_id_t key, psa_algorithm_t alg, |
| 3468 | const uint8_t *hash, size_t hash_length, |
| 3469 | const uint8_t *signature, size_t signature_length) |
| 3470 | { |
| 3471 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3472 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3473 | psa_key_slot_t *slot; |
| 3474 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3475 | /* Check that start has not been previously called, or operation has not |
| 3476 | * previously errored. */ |
| 3477 | if (operation->id != 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3478 | return PSA_ERROR_BAD_STATE; |
| 3479 | } |
| 3480 | |
| 3481 | status = psa_sign_verify_check_alg(0, alg); |
| 3482 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3483 | operation->error_occurred = 1; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3484 | return status; |
| 3485 | } |
| 3486 | |
| 3487 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 3488 | PSA_KEY_USAGE_VERIFY_HASH, |
| 3489 | alg); |
| 3490 | |
| 3491 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3492 | operation->error_occurred = 1; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3493 | return status; |
| 3494 | } |
| 3495 | |
| 3496 | psa_key_attributes_t attributes = { |
| 3497 | .core = slot->attr |
| 3498 | }; |
| 3499 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3500 | /* Ensure ops count gets reset, in case of operation re-use. */ |
| 3501 | operation->num_ops = 0; |
| 3502 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3503 | status = psa_driver_wrapper_verify_hash_start(operation, &attributes, |
| 3504 | slot->key.data, |
| 3505 | slot->key.bytes, |
| 3506 | alg, hash, hash_length, |
| 3507 | signature, signature_length); |
| 3508 | |
| 3509 | if (status != PSA_SUCCESS) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3510 | operation->error_occurred = 1; |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3511 | psa_verify_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3512 | } |
| 3513 | |
| 3514 | unlock_status = psa_unlock_key_slot(slot); |
| 3515 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3516 | if (unlock_status != PSA_SUCCESS) { |
| 3517 | operation->error_occurred = 1; |
| 3518 | } |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3519 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3520 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3521 | } |
| 3522 | |
| 3523 | psa_status_t psa_verify_hash_complete( |
| 3524 | psa_verify_hash_interruptible_operation_t *operation) |
| 3525 | { |
| 3526 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3527 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3528 | /* Check that start has been called first, and that operation has not |
| 3529 | * previously errored. */ |
| 3530 | if (operation->id == 0 || operation->error_occurred) { |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3531 | status = PSA_ERROR_BAD_STATE; |
| 3532 | goto exit; |
| 3533 | } |
| 3534 | |
| 3535 | status = psa_driver_wrapper_verify_hash_complete(operation); |
| 3536 | |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3537 | /* Update ops count with work done. */ |
Paul Elliott | de1114c | 2023-02-07 12:43:11 +0000 | [diff] [blame] | 3538 | operation->num_ops = psa_driver_wrapper_verify_hash_get_num_ops( |
Paul Elliott | 296ede9 | 2022-12-15 17:00:30 +0000 | [diff] [blame] | 3539 | operation); |
| 3540 | |
Paul Elliott | ebe225c | 2023-02-10 14:32:53 +0000 | [diff] [blame] | 3541 | exit: |
| 3542 | |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3543 | if (status != PSA_OPERATION_INCOMPLETE) { |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3544 | if (status != PSA_SUCCESS) { |
| 3545 | operation->error_occurred = 1; |
| 3546 | } |
| 3547 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3548 | psa_verify_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3549 | } |
| 3550 | |
| 3551 | return status; |
| 3552 | } |
| 3553 | |
| 3554 | psa_status_t psa_verify_hash_abort( |
| 3555 | psa_verify_hash_interruptible_operation_t *operation) |
| 3556 | { |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3557 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3558 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3559 | status = psa_verify_hash_abort_internal(operation); |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3560 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3561 | /* We clear the number of ops done here, so that it is not cleared when |
| 3562 | * the operation fails or succeeds, only on manual abort. */ |
| 3563 | operation->num_ops = 0; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3564 | |
Paul Elliott | c977441 | 2023-02-06 15:14:07 +0000 | [diff] [blame] | 3565 | /* Likewise, failure state. */ |
| 3566 | operation->error_occurred = 0; |
| 3567 | |
Paul Elliott | 59ad945 | 2022-12-18 15:09:02 +0000 | [diff] [blame] | 3568 | return status; |
Paul Elliott | 9fe12f6 | 2022-11-30 19:16:02 +0000 | [diff] [blame] | 3569 | } |
| 3570 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3571 | /****************************************************************/ |
| 3572 | /* Asymmetric interruptible cryptography internal */ |
| 3573 | /* implementations */ |
| 3574 | /****************************************************************/ |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 3575 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3576 | void mbedtls_psa_interruptible_set_max_ops(uint32_t max_ops) |
| 3577 | { |
Paul Elliott | 7cc4e81 | 2023-01-10 17:14:11 +0000 | [diff] [blame] | 3578 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3579 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3580 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3581 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3582 | |
| 3583 | /* Internal implementation uses zero to indicate infinite number max ops, |
| 3584 | * therefore avoid this value, and set to minimum possible. */ |
| 3585 | if (max_ops == 0) { |
| 3586 | max_ops = 1; |
| 3587 | } |
| 3588 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3589 | mbedtls_ecp_set_max_ops(max_ops); |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3590 | #else |
| 3591 | (void) max_ops; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3592 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3593 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3594 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3595 | } |
| 3596 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3597 | uint32_t mbedtls_psa_sign_hash_get_num_ops( |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3598 | const mbedtls_psa_sign_hash_interruptible_operation_t *operation) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3599 | { |
| 3600 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3601 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3602 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3603 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3604 | return operation->num_ops; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3605 | #else |
| 3606 | (void) operation; |
| 3607 | return 0; |
| 3608 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3609 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3610 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3611 | } |
| 3612 | |
| 3613 | uint32_t mbedtls_psa_verify_hash_get_num_ops( |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3614 | const mbedtls_psa_verify_hash_interruptible_operation_t *operation) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3615 | { |
| 3616 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3617 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3618 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3619 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3620 | return operation->num_ops; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3621 | #else |
| 3622 | (void) operation; |
| 3623 | return 0; |
| 3624 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3625 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3626 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3627 | } |
| 3628 | |
| 3629 | psa_status_t mbedtls_psa_sign_hash_start( |
| 3630 | mbedtls_psa_sign_hash_interruptible_operation_t *operation, |
| 3631 | const psa_key_attributes_t *attributes, const uint8_t *key_buffer, |
| 3632 | size_t key_buffer_size, psa_algorithm_t alg, |
| 3633 | const uint8_t *hash, size_t hash_length) |
| 3634 | { |
| 3635 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3636 | size_t required_hash_length; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3637 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3638 | if (!PSA_KEY_TYPE_IS_ECC(attributes->core.type)) { |
| 3639 | return PSA_ERROR_NOT_SUPPORTED; |
| 3640 | } |
| 3641 | |
| 3642 | if (!PSA_ALG_IS_ECDSA(alg)) { |
Paul Elliott | 813f9cd | 2023-02-05 15:28:46 +0000 | [diff] [blame] | 3643 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3644 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3645 | |
| 3646 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3647 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3648 | defined(MBEDTLS_ECP_RESTARTABLE) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3649 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 3650 | mbedtls_ecdsa_restart_init(&operation->restart_ctx); |
| 3651 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3652 | /* Ensure num_ops is zero'ed in case of context re-use. */ |
| 3653 | operation->num_ops = 0; |
| 3654 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3655 | status = mbedtls_psa_ecp_load_representation(attributes->core.type, |
| 3656 | attributes->core.bits, |
| 3657 | key_buffer, |
| 3658 | key_buffer_size, |
| 3659 | &operation->ctx); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3660 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3661 | if (status != PSA_SUCCESS) { |
| 3662 | return status; |
| 3663 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3664 | |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3665 | operation->coordinate_bytes = PSA_BITS_TO_BYTES( |
Paul Elliott | c569fc2 | 2023-02-10 13:02:54 +0000 | [diff] [blame] | 3666 | operation->ctx->grp.nbits); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3667 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3668 | psa_algorithm_t hash_alg = PSA_ALG_SIGN_GET_HASH(alg); |
Manuel Pégourié-Gonnard | 2d6d993 | 2023-03-28 11:38:08 +0200 | [diff] [blame] | 3669 | operation->md_alg = mbedtls_md_type_from_psa_alg(hash_alg); |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3670 | operation->alg = alg; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3671 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3672 | /* We only need to store the same length of hash as the private key size |
| 3673 | * here, it would be truncated by the internal implementation anyway. */ |
| 3674 | required_hash_length = (hash_length < operation->coordinate_bytes ? |
| 3675 | hash_length : operation->coordinate_bytes); |
| 3676 | |
Paul Elliott | ba70ad4 | 2023-02-15 18:23:53 +0000 | [diff] [blame] | 3677 | if (required_hash_length > sizeof(operation->hash)) { |
| 3678 | /* Shouldn't happen, but better safe than sorry. */ |
| 3679 | return PSA_ERROR_CORRUPTION_DETECTED; |
| 3680 | } |
| 3681 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3682 | memcpy(operation->hash, hash, required_hash_length); |
| 3683 | operation->hash_length = required_hash_length; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3684 | |
| 3685 | return PSA_SUCCESS; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3686 | |
| 3687 | #else |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3688 | (void) operation; |
| 3689 | (void) key_buffer; |
| 3690 | (void) key_buffer_size; |
| 3691 | (void) alg; |
| 3692 | (void) hash; |
| 3693 | (void) hash_length; |
| 3694 | (void) status; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3695 | (void) required_hash_length; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3696 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3697 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3698 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3699 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3700 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3701 | } |
| 3702 | |
| 3703 | psa_status_t mbedtls_psa_sign_hash_complete( |
| 3704 | mbedtls_psa_sign_hash_interruptible_operation_t *operation, |
| 3705 | uint8_t *signature, size_t signature_size, |
| 3706 | size_t *signature_length) |
| 3707 | { |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3708 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3709 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3710 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3711 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 3712 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 1243f93 | 2023-02-07 11:21:10 +0000 | [diff] [blame] | 3713 | mbedtls_mpi r; |
| 3714 | mbedtls_mpi s; |
| 3715 | |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3716 | mbedtls_mpi_init(&r); |
| 3717 | mbedtls_mpi_init(&s); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3718 | |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3719 | /* Ensure max_ops is set to the current value (or default). */ |
| 3720 | mbedtls_psa_interruptible_set_max_ops(psa_interruptible_get_max_ops()); |
| 3721 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 3722 | if (signature_size < 2 * operation->coordinate_bytes) { |
| 3723 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 3724 | goto exit; |
| 3725 | } |
| 3726 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3727 | if (PSA_ALG_ECDSA_IS_DETERMINISTIC(operation->alg)) { |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3728 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3729 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) |
| 3730 | status = mbedtls_to_psa_error( |
| 3731 | mbedtls_ecdsa_sign_det_restartable(&operation->ctx->grp, |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3732 | &r, |
| 3733 | &s, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3734 | &operation->ctx->d, |
| 3735 | operation->hash, |
| 3736 | operation->hash_length, |
| 3737 | operation->md_alg, |
| 3738 | mbedtls_psa_get_random, |
| 3739 | MBEDTLS_PSA_RANDOM_STATE, |
| 3740 | &operation->restart_ctx)); |
| 3741 | #else /* defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 3742 | status = PSA_ERROR_NOT_SUPPORTED; |
| 3743 | goto exit; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3744 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) */ |
| 3745 | } else { |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3746 | status = mbedtls_to_psa_error( |
| 3747 | mbedtls_ecdsa_sign_restartable(&operation->ctx->grp, |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3748 | &r, |
| 3749 | &s, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3750 | &operation->ctx->d, |
| 3751 | operation->hash, |
| 3752 | operation->hash_length, |
| 3753 | mbedtls_psa_get_random, |
| 3754 | MBEDTLS_PSA_RANDOM_STATE, |
| 3755 | mbedtls_psa_get_random, |
| 3756 | MBEDTLS_PSA_RANDOM_STATE, |
| 3757 | &operation->restart_ctx)); |
| 3758 | } |
| 3759 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3760 | /* Hide the fact that the restart context only holds a delta of number of |
| 3761 | * ops done during the last operation, not an absolute value. */ |
| 3762 | operation->num_ops += operation->restart_ctx.ecp.ops_done; |
| 3763 | |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 3764 | if (status == PSA_SUCCESS) { |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3765 | status = mbedtls_to_psa_error( |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3766 | mbedtls_mpi_write_binary(&r, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3767 | signature, |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3768 | operation->coordinate_bytes) |
| 3769 | ); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3770 | |
| 3771 | if (status != PSA_SUCCESS) { |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 3772 | goto exit; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3773 | } |
| 3774 | |
| 3775 | status = mbedtls_to_psa_error( |
Paul Elliott | 4684525 | 2023-02-03 14:59:11 +0000 | [diff] [blame] | 3776 | mbedtls_mpi_write_binary(&s, |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3777 | signature + |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3778 | operation->coordinate_bytes, |
| 3779 | operation->coordinate_bytes) |
| 3780 | ); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3781 | |
| 3782 | if (status != PSA_SUCCESS) { |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 3783 | goto exit; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3784 | } |
| 3785 | |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3786 | *signature_length = operation->coordinate_bytes * 2; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3787 | |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 3788 | status = PSA_SUCCESS; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3789 | } |
Paul Elliott | 724bd25 | 2023-02-08 12:35:08 +0000 | [diff] [blame] | 3790 | |
| 3791 | exit: |
| 3792 | |
| 3793 | mbedtls_mpi_free(&r); |
| 3794 | mbedtls_mpi_free(&s); |
| 3795 | return status; |
| 3796 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3797 | #else |
| 3798 | |
| 3799 | (void) operation; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3800 | (void) signature; |
| 3801 | (void) signature_size; |
| 3802 | (void) signature_length; |
| 3803 | |
| 3804 | return PSA_ERROR_NOT_SUPPORTED; |
| 3805 | |
| 3806 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3807 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3808 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3809 | } |
| 3810 | |
| 3811 | psa_status_t mbedtls_psa_sign_hash_abort( |
| 3812 | mbedtls_psa_sign_hash_interruptible_operation_t *operation) |
| 3813 | { |
| 3814 | |
| 3815 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3816 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3817 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3818 | |
| 3819 | if (operation->ctx) { |
| 3820 | mbedtls_ecdsa_free(operation->ctx); |
| 3821 | mbedtls_free(operation->ctx); |
Paul Elliott | f9c91a7 | 2023-02-05 18:06:38 +0000 | [diff] [blame] | 3822 | operation->ctx = NULL; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3823 | } |
| 3824 | |
| 3825 | mbedtls_ecdsa_restart_free(&operation->restart_ctx); |
| 3826 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3827 | operation->num_ops = 0; |
| 3828 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3829 | return PSA_SUCCESS; |
| 3830 | |
| 3831 | #else |
| 3832 | |
| 3833 | (void) operation; |
| 3834 | |
| 3835 | return PSA_ERROR_NOT_SUPPORTED; |
| 3836 | |
| 3837 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3838 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3839 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3840 | } |
| 3841 | |
| 3842 | psa_status_t mbedtls_psa_verify_hash_start( |
| 3843 | mbedtls_psa_verify_hash_interruptible_operation_t *operation, |
| 3844 | const psa_key_attributes_t *attributes, |
| 3845 | const uint8_t *key_buffer, size_t key_buffer_size, |
| 3846 | psa_algorithm_t alg, |
| 3847 | const uint8_t *hash, size_t hash_length, |
| 3848 | const uint8_t *signature, size_t signature_length) |
| 3849 | { |
| 3850 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3851 | size_t coordinate_bytes = 0; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3852 | size_t required_hash_length = 0; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3853 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3854 | if (!PSA_KEY_TYPE_IS_ECC(attributes->core.type)) { |
| 3855 | return PSA_ERROR_NOT_SUPPORTED; |
| 3856 | } |
| 3857 | |
| 3858 | if (!PSA_ALG_IS_ECDSA(alg)) { |
Paul Elliott | 813f9cd | 2023-02-05 15:28:46 +0000 | [diff] [blame] | 3859 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3860 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3861 | |
| 3862 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3863 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3864 | defined(MBEDTLS_ECP_RESTARTABLE) |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3865 | |
Paul Elliott | a1c9409 | 2023-02-15 16:38:04 +0000 | [diff] [blame] | 3866 | mbedtls_ecdsa_restart_init(&operation->restart_ctx); |
| 3867 | mbedtls_mpi_init(&operation->r); |
| 3868 | mbedtls_mpi_init(&operation->s); |
| 3869 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 3870 | /* Ensure num_ops is zero'ed in case of context re-use. */ |
| 3871 | operation->num_ops = 0; |
| 3872 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3873 | status = mbedtls_psa_ecp_load_representation(attributes->core.type, |
| 3874 | attributes->core.bits, |
| 3875 | key_buffer, |
| 3876 | key_buffer_size, |
| 3877 | &operation->ctx); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3878 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3879 | if (status != PSA_SUCCESS) { |
| 3880 | return status; |
| 3881 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3882 | |
Paul Elliott | c569fc2 | 2023-02-10 13:02:54 +0000 | [diff] [blame] | 3883 | coordinate_bytes = PSA_BITS_TO_BYTES(operation->ctx->grp.nbits); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3884 | |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3885 | if (signature_length != 2 * coordinate_bytes) { |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3886 | return PSA_ERROR_INVALID_SIGNATURE; |
| 3887 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3888 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3889 | status = mbedtls_to_psa_error( |
| 3890 | mbedtls_mpi_read_binary(&operation->r, |
| 3891 | signature, |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3892 | coordinate_bytes)); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3893 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3894 | if (status != PSA_SUCCESS) { |
| 3895 | return status; |
| 3896 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3897 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3898 | status = mbedtls_to_psa_error( |
| 3899 | mbedtls_mpi_read_binary(&operation->s, |
| 3900 | signature + |
Paul Elliott | 1bc59df | 2023-02-05 13:41:57 +0000 | [diff] [blame] | 3901 | coordinate_bytes, |
| 3902 | coordinate_bytes)); |
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 | if (status != PSA_SUCCESS) { |
| 3905 | return status; |
| 3906 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3907 | |
Paul Elliott | 2c9843f | 2023-02-15 17:32:42 +0000 | [diff] [blame] | 3908 | status = mbedtls_psa_ecp_load_public_part(operation->ctx); |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3909 | |
Paul Elliott | 2c9843f | 2023-02-15 17:32:42 +0000 | [diff] [blame] | 3910 | if (status != PSA_SUCCESS) { |
| 3911 | return status; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3912 | } |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3913 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3914 | /* We only need to store the same length of hash as the private key size |
| 3915 | * here, it would be truncated by the internal implementation anyway. */ |
| 3916 | required_hash_length = (hash_length < coordinate_bytes ? hash_length : |
| 3917 | coordinate_bytes); |
| 3918 | |
Paul Elliott | ba70ad4 | 2023-02-15 18:23:53 +0000 | [diff] [blame] | 3919 | if (required_hash_length > sizeof(operation->hash)) { |
| 3920 | /* Shouldn't happen, but better safe than sorry. */ |
| 3921 | return PSA_ERROR_CORRUPTION_DETECTED; |
| 3922 | } |
| 3923 | |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3924 | memcpy(operation->hash, hash, required_hash_length); |
| 3925 | operation->hash_length = required_hash_length; |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3926 | |
| 3927 | return PSA_SUCCESS; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3928 | #else |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3929 | (void) operation; |
| 3930 | (void) key_buffer; |
| 3931 | (void) key_buffer_size; |
| 3932 | (void) alg; |
| 3933 | (void) hash; |
| 3934 | (void) hash_length; |
| 3935 | (void) signature; |
| 3936 | (void) signature_length; |
| 3937 | (void) status; |
Paul Elliott | 1243f93 | 2023-02-07 11:21:10 +0000 | [diff] [blame] | 3938 | (void) coordinate_bytes; |
Paul Elliott | 0290a76 | 2023-02-09 14:30:24 +0000 | [diff] [blame] | 3939 | (void) required_hash_length; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3940 | |
Paul Elliott | 068fe07 | 2023-01-16 13:59:15 +0000 | [diff] [blame] | 3941 | return PSA_ERROR_NOT_SUPPORTED; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3942 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3943 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3944 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3945 | } |
| 3946 | |
| 3947 | psa_status_t mbedtls_psa_verify_hash_complete( |
| 3948 | mbedtls_psa_verify_hash_interruptible_operation_t *operation) |
| 3949 | { |
| 3950 | |
| 3951 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3952 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3953 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3954 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3955 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 3956 | |
Paul Elliott | a16ce9f | 2023-02-21 14:19:23 +0000 | [diff] [blame] | 3957 | /* Ensure max_ops is set to the current value (or default). */ |
| 3958 | mbedtls_psa_interruptible_set_max_ops(psa_interruptible_get_max_ops()); |
| 3959 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3960 | status = mbedtls_to_psa_error( |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3961 | mbedtls_ecdsa_verify_restartable(&operation->ctx->grp, |
| 3962 | operation->hash, |
| 3963 | operation->hash_length, |
| 3964 | &operation->ctx->Q, |
| 3965 | &operation->r, |
| 3966 | &operation->s, |
| 3967 | &operation->restart_ctx)); |
| 3968 | |
Paul Elliott | f8e5b56 | 2023-02-19 18:43:45 +0000 | [diff] [blame] | 3969 | /* Hide the fact that the restart context only holds a delta of number of |
| 3970 | * ops done during the last operation, not an absolute value. */ |
| 3971 | operation->num_ops += operation->restart_ctx.ecp.ops_done; |
| 3972 | |
| 3973 | return status; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3974 | #else |
| 3975 | (void) operation; |
| 3976 | |
| 3977 | return PSA_ERROR_NOT_SUPPORTED; |
| 3978 | |
| 3979 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 3980 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 3981 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 3982 | } |
| 3983 | |
| 3984 | psa_status_t mbedtls_psa_verify_hash_abort( |
| 3985 | mbedtls_psa_verify_hash_interruptible_operation_t *operation) |
| 3986 | { |
| 3987 | |
| 3988 | #if (defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || \ |
| 3989 | defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA)) && \ |
| 3990 | defined(MBEDTLS_ECP_RESTARTABLE) |
| 3991 | |
| 3992 | if (operation->ctx) { |
| 3993 | mbedtls_ecdsa_free(operation->ctx); |
| 3994 | mbedtls_free(operation->ctx); |
Paul Elliott | f9c91a7 | 2023-02-05 18:06:38 +0000 | [diff] [blame] | 3995 | operation->ctx = NULL; |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 3996 | } |
| 3997 | |
| 3998 | mbedtls_ecdsa_restart_free(&operation->restart_ctx); |
| 3999 | |
Paul Elliott | 93d9ca8 | 2023-02-15 18:14:21 +0000 | [diff] [blame] | 4000 | operation->num_ops = 0; |
| 4001 | |
Paul Elliott | 588f8ed | 2022-12-02 18:10:26 +0000 | [diff] [blame] | 4002 | mbedtls_mpi_free(&operation->r); |
| 4003 | mbedtls_mpi_free(&operation->s); |
| 4004 | |
| 4005 | return PSA_SUCCESS; |
| 4006 | |
| 4007 | #else |
| 4008 | (void) operation; |
| 4009 | |
| 4010 | return PSA_ERROR_NOT_SUPPORTED; |
| 4011 | |
| 4012 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_ECDSA) || |
| 4013 | * defined(MBEDTLS_PSA_BUILTIN_ALG_DETERMINISTIC_ECDSA) && |
| 4014 | * defined( MBEDTLS_ECP_RESTARTABLE ) */ |
| 4015 | } |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 4016 | |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4017 | /****************************************************************/ |
| 4018 | /* Symmetric cryptography */ |
| 4019 | /****************************************************************/ |
| 4020 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4021 | static psa_status_t psa_cipher_setup(psa_cipher_operation_t *operation, |
| 4022 | mbedtls_svc_key_id_t key, |
| 4023 | psa_algorithm_t alg, |
| 4024 | mbedtls_operation_t cipher_operation) |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4025 | { |
| 4026 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4027 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 4028 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4029 | psa_key_usage_t usage = (cipher_operation == MBEDTLS_ENCRYPT ? |
| 4030 | PSA_KEY_USAGE_ENCRYPT : |
| 4031 | PSA_KEY_USAGE_DECRYPT); |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4032 | psa_key_attributes_t attributes; |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4033 | |
| 4034 | /* A context must be freshly initialized before it can be set up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4035 | if (operation->id != 0) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 4036 | status = PSA_ERROR_BAD_STATE; |
| 4037 | goto exit; |
| 4038 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4039 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4040 | if (!PSA_ALG_IS_CIPHER(alg)) { |
Dave Rodgman | 5464824 | 2021-06-24 11:49:45 +0100 | [diff] [blame] | 4041 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4042 | goto exit; |
| 4043 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4044 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4045 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, usage, alg); |
| 4046 | if (status != PSA_SUCCESS) { |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4047 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4048 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4049 | |
Ronald Cron | 49fafa9 | 2021-03-10 08:34:23 +0100 | [diff] [blame] | 4050 | /* Initialize the operation struct members, except for id. The id member |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4051 | * 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] | 4052 | * so we only set it (in the driver wrapper) after resources have been |
| 4053 | * allocated/initialized. */ |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4054 | operation->iv_set = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4055 | if (alg == PSA_ALG_ECB_NO_PADDING) { |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4056 | operation->iv_required = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4057 | } else { |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4058 | operation->iv_required = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4059 | } |
| 4060 | operation->default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg); |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4061 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4062 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4063 | .core = slot->attr |
Ronald Cron | a4af55f | 2020-12-14 14:36:06 +0100 | [diff] [blame] | 4064 | }; |
| 4065 | |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4066 | /* Try doing the operation through a driver before using software fallback. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4067 | if (cipher_operation == MBEDTLS_ENCRYPT) { |
| 4068 | status = psa_driver_wrapper_cipher_encrypt_setup(operation, |
| 4069 | &attributes, |
| 4070 | slot->key.data, |
| 4071 | slot->key.bytes, |
| 4072 | alg); |
| 4073 | } else { |
| 4074 | status = psa_driver_wrapper_cipher_decrypt_setup(operation, |
| 4075 | &attributes, |
| 4076 | slot->key.data, |
| 4077 | slot->key.bytes, |
| 4078 | alg); |
| 4079 | } |
Ronald Cron | ab99ac2 | 2020-10-01 16:38:28 +0200 | [diff] [blame] | 4080 | |
Gilles Peskine | 9ab61b6 | 2019-02-25 17:43:14 +0100 | [diff] [blame] | 4081 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4082 | if (status != PSA_SUCCESS) { |
| 4083 | psa_cipher_abort(operation); |
| 4084 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 4085 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4086 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 4087 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4088 | return (status == PSA_SUCCESS) ? unlock_status : status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4089 | } |
| 4090 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4091 | psa_status_t psa_cipher_encrypt_setup(psa_cipher_operation_t *operation, |
| 4092 | mbedtls_svc_key_id_t key, |
| 4093 | psa_algorithm_t alg) |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4094 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4095 | return psa_cipher_setup(operation, key, alg, MBEDTLS_ENCRYPT); |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4096 | } |
| 4097 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4098 | psa_status_t psa_cipher_decrypt_setup(psa_cipher_operation_t *operation, |
| 4099 | mbedtls_svc_key_id_t key, |
| 4100 | psa_algorithm_t alg) |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4101 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4102 | return psa_cipher_setup(operation, key, alg, MBEDTLS_DECRYPT); |
mohammad1603 | 8481e74 | 2018-03-18 13:57:31 +0200 | [diff] [blame] | 4103 | } |
| 4104 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4105 | psa_status_t psa_cipher_generate_iv(psa_cipher_operation_t *operation, |
| 4106 | uint8_t *iv, |
| 4107 | size_t iv_size, |
| 4108 | size_t *iv_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4109 | { |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4110 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4111 | uint8_t local_iv[PSA_CIPHER_IV_MAX_SIZE]; |
| 4112 | size_t default_iv_length; |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4113 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4114 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4115 | status = PSA_ERROR_BAD_STATE; |
| 4116 | goto exit; |
Ronald Cron | c45b4af | 2020-09-29 16:18:05 +0200 | [diff] [blame] | 4117 | } |
| 4118 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4119 | if (operation->iv_set || !operation->iv_required) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4120 | status = PSA_ERROR_BAD_STATE; |
| 4121 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4122 | } |
Steven Cooreman | d3feccd | 2020-09-01 15:56:14 +0200 | [diff] [blame] | 4123 | |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4124 | default_iv_length = operation->default_iv_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4125 | if (iv_size < default_iv_length) { |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4126 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 4127 | goto exit; |
| 4128 | } |
Gilles Peskine | e553c65 | 2018-06-04 16:22:46 +0200 | [diff] [blame] | 4129 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4130 | if (default_iv_length > PSA_CIPHER_IV_MAX_SIZE) { |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4131 | status = PSA_ERROR_GENERIC_ERROR; |
| 4132 | goto exit; |
| 4133 | } |
| 4134 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4135 | status = psa_generate_random(local_iv, default_iv_length); |
| 4136 | if (status != PSA_SUCCESS) { |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4137 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4138 | } |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4139 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4140 | status = psa_driver_wrapper_cipher_set_iv(operation, |
| 4141 | local_iv, default_iv_length); |
Ronald Cron | 5618a39 | 2021-03-26 09:52:26 +0100 | [diff] [blame] | 4142 | |
| 4143 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4144 | if (status == PSA_SUCCESS) { |
| 4145 | memcpy(iv, local_iv, default_iv_length); |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4146 | *iv_length = default_iv_length; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4147 | operation->iv_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4148 | } else { |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4149 | *iv_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4150 | psa_cipher_abort(operation); |
Ronald Cron | 2fb9052 | 2021-07-05 12:31:44 +0200 | [diff] [blame] | 4151 | } |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4152 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4153 | return status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4154 | } |
| 4155 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4156 | psa_status_t psa_cipher_set_iv(psa_cipher_operation_t *operation, |
| 4157 | const uint8_t *iv, |
| 4158 | size_t iv_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4159 | { |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4160 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | c45b4af | 2020-09-29 16:18:05 +0200 | [diff] [blame] | 4161 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4162 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4163 | status = PSA_ERROR_BAD_STATE; |
| 4164 | goto exit; |
| 4165 | } |
Ronald Cron | c45b4af | 2020-09-29 16:18:05 +0200 | [diff] [blame] | 4166 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4167 | if (operation->iv_set || !operation->iv_required) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4168 | status = PSA_ERROR_BAD_STATE; |
| 4169 | goto exit; |
| 4170 | } |
Ronald Cron | a0d6817 | 2021-03-26 10:15:08 +0100 | [diff] [blame] | 4171 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4172 | if (iv_length > PSA_CIPHER_IV_MAX_SIZE) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4173 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4174 | goto exit; |
| 4175 | } |
Steven Cooreman | d3feccd | 2020-09-01 15:56:14 +0200 | [diff] [blame] | 4176 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4177 | status = psa_driver_wrapper_cipher_set_iv(operation, |
| 4178 | iv, |
| 4179 | iv_length); |
Steven Cooreman | d3feccd | 2020-09-01 15:56:14 +0200 | [diff] [blame] | 4180 | |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4181 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4182 | if (status == PSA_SUCCESS) { |
itayzafrir | 534bd7c | 2018-08-02 13:56:32 +0300 | [diff] [blame] | 4183 | operation->iv_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4184 | } else { |
| 4185 | psa_cipher_abort(operation); |
| 4186 | } |
| 4187 | return status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4188 | } |
| 4189 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4190 | psa_status_t psa_cipher_update(psa_cipher_operation_t *operation, |
| 4191 | const uint8_t *input, |
| 4192 | size_t input_length, |
| 4193 | uint8_t *output, |
| 4194 | size_t output_size, |
| 4195 | size_t *output_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4196 | { |
Steven Cooreman | ffecb7b | 2020-08-25 15:13:13 +0200 | [diff] [blame] | 4197 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4198 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4199 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4200 | status = PSA_ERROR_BAD_STATE; |
| 4201 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4202 | } |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4203 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4204 | if (operation->iv_required && !operation->iv_set) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4205 | status = PSA_ERROR_BAD_STATE; |
| 4206 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4207 | } |
Jaeden Amero | ab43997 | 2019-02-15 14:12:05 +0000 | [diff] [blame] | 4208 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4209 | status = psa_driver_wrapper_cipher_update(operation, |
| 4210 | input, |
| 4211 | input_length, |
| 4212 | output, |
| 4213 | output_size, |
| 4214 | output_length); |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4215 | |
| 4216 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4217 | if (status != PSA_SUCCESS) { |
| 4218 | psa_cipher_abort(operation); |
| 4219 | } |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4220 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4221 | return status; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4222 | } |
| 4223 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4224 | psa_status_t psa_cipher_finish(psa_cipher_operation_t *operation, |
| 4225 | uint8_t *output, |
| 4226 | size_t output_size, |
| 4227 | size_t *output_length) |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4228 | { |
David Saada | b4ecc27 | 2019-02-14 13:48:10 +0200 | [diff] [blame] | 4229 | psa_status_t status = PSA_ERROR_GENERIC_ERROR; |
Ronald Cron | 6d05173 | 2020-10-01 14:10:20 +0200 | [diff] [blame] | 4230 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4231 | if (operation->id == 0) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4232 | status = PSA_ERROR_BAD_STATE; |
| 4233 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4234 | } |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4235 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4236 | if (operation->iv_required && !operation->iv_set) { |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4237 | status = PSA_ERROR_BAD_STATE; |
| 4238 | goto exit; |
Steven Cooreman | 7df0292 | 2020-09-09 15:28:49 +0200 | [diff] [blame] | 4239 | } |
Moran Peker | bed71a2 | 2018-04-22 20:19:20 +0300 | [diff] [blame] | 4240 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4241 | status = psa_driver_wrapper_cipher_finish(operation, |
| 4242 | output, |
| 4243 | output_size, |
| 4244 | output_length); |
Dave Rodgman | 38e62ae | 2021-06-23 11:38:39 +0100 | [diff] [blame] | 4245 | |
| 4246 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4247 | if (status == PSA_SUCCESS) { |
| 4248 | return psa_cipher_abort(operation); |
| 4249 | } else { |
Steven Cooreman | ef8575e | 2020-09-11 11:44:50 +0200 | [diff] [blame] | 4250 | *output_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4251 | (void) psa_cipher_abort(operation); |
Janos Follath | 315b51c | 2018-07-09 16:04:51 +0100 | [diff] [blame] | 4252 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4253 | return status; |
Steven Cooreman | ef8575e | 2020-09-11 11:44:50 +0200 | [diff] [blame] | 4254 | } |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4255 | } |
| 4256 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4257 | psa_status_t psa_cipher_abort(psa_cipher_operation_t *operation) |
Gilles Peskine | e553c65 | 2018-06-04 16:22:46 +0200 | [diff] [blame] | 4258 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4259 | if (operation->id == 0) { |
Steven Cooreman | a07b997 | 2020-09-10 14:54:14 +0200 | [diff] [blame] | 4260 | /* The object has (apparently) been initialized but it is not (yet) |
Gilles Peskine | 8173631 | 2018-06-26 15:04:31 +0200 | [diff] [blame] | 4261 | * in use. It's ok to call abort on such an object, and there's |
| 4262 | * nothing to do. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4263 | return PSA_SUCCESS; |
Gilles Peskine | 8173631 | 2018-06-26 15:04:31 +0200 | [diff] [blame] | 4264 | } |
Gilles Peskine | 16c0f4f | 2018-06-20 16:05:20 +0200 | [diff] [blame] | 4265 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4266 | psa_driver_wrapper_cipher_abort(operation); |
Gilles Peskine | e553c65 | 2018-06-04 16:22:46 +0200 | [diff] [blame] | 4267 | |
Ronald Cron | 49fafa9 | 2021-03-10 08:34:23 +0100 | [diff] [blame] | 4268 | operation->id = 0; |
Moran Peker | ad9d82c | 2018-04-30 12:31:04 +0300 | [diff] [blame] | 4269 | operation->iv_set = 0; |
Moran Peker | ad9d82c | 2018-04-30 12:31:04 +0300 | [diff] [blame] | 4270 | operation->iv_required = 0; |
Moran Peker | 41deec4 | 2018-04-04 15:43:05 +0300 | [diff] [blame] | 4271 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4272 | return PSA_SUCCESS; |
mohammad1603 | 503973b | 2018-03-12 15:59:30 +0200 | [diff] [blame] | 4273 | } |
| 4274 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4275 | psa_status_t psa_cipher_encrypt(mbedtls_svc_key_id_t key, |
| 4276 | psa_algorithm_t alg, |
| 4277 | const uint8_t *input, |
| 4278 | size_t input_length, |
| 4279 | uint8_t *output, |
| 4280 | size_t output_size, |
| 4281 | size_t *output_length) |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4282 | { |
| 4283 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4284 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4285 | psa_key_slot_t *slot = NULL; |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4286 | uint8_t local_iv[PSA_CIPHER_IV_MAX_SIZE]; |
| 4287 | size_t default_iv_length = 0; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4288 | psa_key_attributes_t attributes; |
gabor-mezei-arm | 6f4e5bb | 2021-06-25 15:21:11 +0200 | [diff] [blame] | 4289 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4290 | if (!PSA_ALG_IS_CIPHER(alg)) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4291 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4292 | goto exit; |
| 4293 | } |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4294 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4295 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 4296 | PSA_KEY_USAGE_ENCRYPT, |
| 4297 | alg); |
| 4298 | if (status != PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4299 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4300 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4301 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4302 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4303 | .core = slot->attr |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4304 | }; |
| 4305 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4306 | default_iv_length = PSA_CIPHER_IV_LENGTH(slot->attr.type, alg); |
| 4307 | if (default_iv_length > PSA_CIPHER_IV_MAX_SIZE) { |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4308 | status = PSA_ERROR_GENERIC_ERROR; |
| 4309 | goto exit; |
| 4310 | } |
| 4311 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4312 | if (default_iv_length > 0) { |
| 4313 | if (output_size < default_iv_length) { |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4314 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 4315 | goto exit; |
| 4316 | } |
| 4317 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4318 | status = psa_generate_random(local_iv, default_iv_length); |
| 4319 | if (status != PSA_SUCCESS) { |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4320 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4321 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4322 | } |
| 4323 | |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4324 | status = psa_driver_wrapper_cipher_encrypt( |
| 4325 | &attributes, slot->key.data, slot->key.bytes, |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4326 | alg, local_iv, default_iv_length, input, input_length, |
Ronald Cron | afbc7ed | 2023-01-24 16:02:04 +0100 | [diff] [blame] | 4327 | psa_crypto_buffer_offset(output, default_iv_length), |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4328 | output_size - default_iv_length, output_length); |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4329 | |
| 4330 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4331 | unlock_status = psa_unlock_key_slot(slot); |
| 4332 | if (status == PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4333 | status = unlock_status; |
Ronald Cron | c6e6f50 | 2021-07-09 18:44:58 +0200 | [diff] [blame] | 4334 | } |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4335 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4336 | if (status == PSA_SUCCESS) { |
| 4337 | if (default_iv_length > 0) { |
| 4338 | memcpy(output, local_iv, default_iv_length); |
| 4339 | } |
| 4340 | *output_length += default_iv_length; |
| 4341 | } else { |
| 4342 | *output_length = 0; |
| 4343 | } |
| 4344 | |
| 4345 | return status; |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4346 | } |
| 4347 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4348 | psa_status_t psa_cipher_decrypt(mbedtls_svc_key_id_t key, |
| 4349 | psa_algorithm_t alg, |
| 4350 | const uint8_t *input, |
| 4351 | size_t input_length, |
| 4352 | uint8_t *output, |
| 4353 | size_t output_size, |
| 4354 | size_t *output_length) |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4355 | { |
| 4356 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4357 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4358 | psa_key_slot_t *slot = NULL; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4359 | psa_key_attributes_t attributes; |
gabor-mezei-arm | 6f4e5bb | 2021-06-25 15:21:11 +0200 | [diff] [blame] | 4360 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4361 | if (!PSA_ALG_IS_CIPHER(alg)) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4362 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4363 | goto exit; |
| 4364 | } |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4365 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4366 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, |
| 4367 | PSA_KEY_USAGE_DECRYPT, |
| 4368 | alg); |
| 4369 | if (status != PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4370 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4371 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4372 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4373 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4374 | .core = slot->attr |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4375 | }; |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4376 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4377 | if (alg == PSA_ALG_CCM_STAR_NO_TAG && |
| 4378 | input_length < PSA_BLOCK_CIPHER_BLOCK_LENGTH(slot->attr.type)) { |
Mateusz Starzyk | 594215b | 2021-10-14 12:23:06 +0200 | [diff] [blame] | 4379 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4380 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4381 | } else if (input_length < PSA_CIPHER_IV_LENGTH(slot->attr.type, alg)) { |
gabor-mezei-arm | 258ae07 | 2021-06-25 15:25:38 +0200 | [diff] [blame] | 4382 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4383 | goto exit; |
| 4384 | } |
| 4385 | |
gabor-mezei-arm | a9449a0 | 2021-03-25 11:17:10 +0100 | [diff] [blame] | 4386 | status = psa_driver_wrapper_cipher_decrypt( |
| 4387 | &attributes, slot->key.data, slot->key.bytes, |
| 4388 | alg, input, input_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4389 | output, output_size, output_length); |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4390 | |
gabor-mezei-arm | 258ae07 | 2021-06-25 15:25:38 +0200 | [diff] [blame] | 4391 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4392 | unlock_status = psa_unlock_key_slot(slot); |
| 4393 | if (status == PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4394 | status = unlock_status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4395 | } |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4396 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4397 | if (status != PSA_SUCCESS) { |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4398 | *output_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4399 | } |
Ronald Cron | 2391952 | 2021-07-08 19:00:07 +0200 | [diff] [blame] | 4400 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4401 | return status; |
gabor-mezei-arm | ba0fa75 | 2021-03-01 15:04:24 +0100 | [diff] [blame] | 4402 | } |
| 4403 | |
| 4404 | |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4405 | /****************************************************************/ |
| 4406 | /* AEAD */ |
| 4407 | /****************************************************************/ |
Gilles Peskine | 7bcfc0a | 2018-06-18 21:49:39 +0200 | [diff] [blame] | 4408 | |
Paul Elliott | baff51c | 2021-09-28 17:44:45 +0100 | [diff] [blame] | 4409 | /* Helper function to get the base algorithm from its variants. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4410 | 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] | 4411 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4412 | return PSA_ALG_AEAD_WITH_DEFAULT_LENGTH_TAG(alg); |
Paul Elliott | baff51c | 2021-09-28 17:44:45 +0100 | [diff] [blame] | 4413 | } |
| 4414 | |
| 4415 | /* Helper function to perform common nonce length checks. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4416 | static psa_status_t psa_aead_check_nonce_length(psa_algorithm_t alg, |
| 4417 | size_t nonce_length) |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4418 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4419 | psa_algorithm_t base_alg = psa_aead_get_base_algorithm(alg); |
Paul Elliott | baff51c | 2021-09-28 17:44:45 +0100 | [diff] [blame] | 4420 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4421 | switch (base_alg) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4422 | #if defined(PSA_WANT_ALG_GCM) |
| 4423 | case PSA_ALG_GCM: |
| 4424 | /* Not checking max nonce size here as GCM spec allows almost |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4425 | * arbitrarily large nonces. Please note that we do not generally |
| 4426 | * recommend the usage of nonces of greater length than |
| 4427 | * PSA_AEAD_NONCE_MAX_SIZE, as large nonces are hashed to a shorter |
| 4428 | * size, which can then lead to collisions if you encrypt a very |
| 4429 | * large number of messages.*/ |
| 4430 | if (nonce_length != 0) { |
| 4431 | return PSA_SUCCESS; |
| 4432 | } |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4433 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4434 | #endif /* PSA_WANT_ALG_GCM */ |
| 4435 | #if defined(PSA_WANT_ALG_CCM) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4436 | case PSA_ALG_CCM: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4437 | if (nonce_length >= 7 && nonce_length <= 13) { |
| 4438 | return PSA_SUCCESS; |
| 4439 | } |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4440 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4441 | #endif /* PSA_WANT_ALG_CCM */ |
| 4442 | #if defined(PSA_WANT_ALG_CHACHA20_POLY1305) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4443 | case PSA_ALG_CHACHA20_POLY1305: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4444 | if (nonce_length == 12) { |
| 4445 | return PSA_SUCCESS; |
| 4446 | } else if (nonce_length == 8) { |
| 4447 | return PSA_ERROR_NOT_SUPPORTED; |
| 4448 | } |
Bence Szépkúti | 6d48e20 | 2021-11-15 20:04:15 +0100 | [diff] [blame] | 4449 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4450 | #endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */ |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4451 | default: |
Przemek Stekiel | 4c49927 | 2022-09-27 13:55:37 +0200 | [diff] [blame] | 4452 | (void) nonce_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4453 | return PSA_ERROR_NOT_SUPPORTED; |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4454 | } |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4455 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4456 | return PSA_ERROR_INVALID_ARGUMENT; |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4457 | } |
| 4458 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4459 | static psa_status_t psa_aead_check_algorithm(psa_algorithm_t alg) |
Bence Szépkúti | aa3a6e4 | 2022-01-13 16:26:03 +0100 | [diff] [blame] | 4460 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4461 | if (!PSA_ALG_IS_AEAD(alg) || PSA_ALG_IS_WILDCARD(alg)) { |
| 4462 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4463 | } |
Bence Szépkúti | 08f3465 | 2021-12-08 21:07:13 +0100 | [diff] [blame] | 4464 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4465 | return PSA_SUCCESS; |
Bence Szépkúti | 08f3465 | 2021-12-08 21:07:13 +0100 | [diff] [blame] | 4466 | } |
| 4467 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4468 | psa_status_t psa_aead_encrypt(mbedtls_svc_key_id_t key, |
| 4469 | psa_algorithm_t alg, |
| 4470 | const uint8_t *nonce, |
| 4471 | size_t nonce_length, |
| 4472 | const uint8_t *additional_data, |
| 4473 | size_t additional_data_length, |
| 4474 | const uint8_t *plaintext, |
| 4475 | size_t plaintext_length, |
| 4476 | uint8_t *ciphertext, |
| 4477 | size_t ciphertext_size, |
| 4478 | size_t *ciphertext_length) |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4479 | { |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4480 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4481 | psa_key_slot_t *slot; |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4482 | |
mohammad1603 | f08a550 | 2018-06-03 15:05:47 +0300 | [diff] [blame] | 4483 | *ciphertext_length = 0; |
mohammad1603 | e58e684 | 2018-05-09 04:58:32 -0700 | [diff] [blame] | 4484 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4485 | status = psa_aead_check_algorithm(alg); |
| 4486 | if (status != PSA_SUCCESS) { |
| 4487 | return status; |
| 4488 | } |
Steven Cooreman | ea7ab13 | 2021-03-17 16:28:00 +0100 | [diff] [blame] | 4489 | |
Ronald Cron | 9a98616 | 2021-03-26 12:40:07 +0100 | [diff] [blame] | 4490 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4491 | key, &slot, PSA_KEY_USAGE_ENCRYPT, alg); |
| 4492 | if (status != PSA_SUCCESS) { |
| 4493 | return status; |
| 4494 | } |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4495 | |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4496 | psa_key_attributes_t attributes = { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4497 | .core = slot->attr |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4498 | }; |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4499 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4500 | status = psa_aead_check_nonce_length(alg, nonce_length); |
| 4501 | if (status != PSA_SUCCESS) { |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4502 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4503 | } |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4504 | |
Ronald Cron | de82281 | 2021-03-17 16:08:20 +0100 | [diff] [blame] | 4505 | status = psa_driver_wrapper_aead_encrypt( |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4506 | &attributes, slot->key.data, slot->key.bytes, |
| 4507 | alg, |
| 4508 | nonce, nonce_length, |
| 4509 | additional_data, additional_data_length, |
| 4510 | plaintext, plaintext_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4511 | ciphertext, ciphertext_size, ciphertext_length); |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4512 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4513 | if (status != PSA_SUCCESS && ciphertext_size != 0) { |
| 4514 | memset(ciphertext, 0, ciphertext_size); |
| 4515 | } |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4516 | |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4517 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4518 | psa_unlock_key_slot(slot); |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4519 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4520 | return status; |
Gilles Peskine | ee652a3 | 2018-06-01 19:23:52 +0200 | [diff] [blame] | 4521 | } |
| 4522 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4523 | psa_status_t psa_aead_decrypt(mbedtls_svc_key_id_t key, |
| 4524 | psa_algorithm_t alg, |
| 4525 | const uint8_t *nonce, |
| 4526 | size_t nonce_length, |
| 4527 | const uint8_t *additional_data, |
| 4528 | size_t additional_data_length, |
| 4529 | const uint8_t *ciphertext, |
| 4530 | size_t ciphertext_length, |
| 4531 | uint8_t *plaintext, |
| 4532 | size_t plaintext_size, |
| 4533 | size_t *plaintext_length) |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4534 | { |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4535 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4536 | psa_key_slot_t *slot; |
Gilles Peskine | 2d27786 | 2018-06-18 15:41:12 +0200 | [diff] [blame] | 4537 | |
Gilles Peskine | ee652a3 | 2018-06-01 19:23:52 +0200 | [diff] [blame] | 4538 | *plaintext_length = 0; |
mohammad1603 | 9e5a515 | 2018-04-26 12:07:35 +0300 | [diff] [blame] | 4539 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4540 | status = psa_aead_check_algorithm(alg); |
| 4541 | if (status != PSA_SUCCESS) { |
| 4542 | return status; |
| 4543 | } |
Steven Cooreman | ea7ab13 | 2021-03-17 16:28:00 +0100 | [diff] [blame] | 4544 | |
Ronald Cron | 9a98616 | 2021-03-26 12:40:07 +0100 | [diff] [blame] | 4545 | status = psa_get_and_lock_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4546 | key, &slot, PSA_KEY_USAGE_DECRYPT, alg); |
| 4547 | if (status != PSA_SUCCESS) { |
| 4548 | return status; |
| 4549 | } |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4550 | |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4551 | psa_key_attributes_t attributes = { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4552 | .core = slot->attr |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4553 | }; |
Gilles Peskine | f7e7b01 | 2019-05-06 15:27:16 +0200 | [diff] [blame] | 4554 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4555 | status = psa_aead_check_nonce_length(alg, nonce_length); |
| 4556 | if (status != PSA_SUCCESS) { |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4557 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4558 | } |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4559 | |
Ronald Cron | de82281 | 2021-03-17 16:08:20 +0100 | [diff] [blame] | 4560 | status = psa_driver_wrapper_aead_decrypt( |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4561 | &attributes, slot->key.data, slot->key.bytes, |
| 4562 | alg, |
| 4563 | nonce, nonce_length, |
| 4564 | additional_data, additional_data_length, |
| 4565 | ciphertext, ciphertext_length, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4566 | plaintext, plaintext_size, plaintext_length); |
Gilles Peskine | a40d774 | 2018-06-01 16:28:30 +0200 | [diff] [blame] | 4567 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4568 | if (status != PSA_SUCCESS && plaintext_size != 0) { |
| 4569 | memset(plaintext, 0, plaintext_size); |
| 4570 | } |
mohammad1603 | 60a64d0 | 2018-06-03 17:20:42 +0300 | [diff] [blame] | 4571 | |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4572 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4573 | psa_unlock_key_slot(slot); |
Ronald Cron | 215633c | 2021-03-16 17:15:37 +0100 | [diff] [blame] | 4574 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4575 | return status; |
mohammad1603 | 5955c98 | 2018-04-26 00:53:03 +0300 | [diff] [blame] | 4576 | } |
| 4577 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4578 | static psa_status_t psa_validate_tag_length(psa_algorithm_t alg) |
| 4579 | { |
| 4580 | const uint8_t tag_len = PSA_ALG_AEAD_GET_TAG_LENGTH(alg); |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4581 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4582 | switch (PSA_ALG_AEAD_WITH_SHORTENED_TAG(alg, 0)) { |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4583 | #if defined(PSA_WANT_ALG_CCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4584 | case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CCM, 0): |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4585 | /* 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] | 4586 | if (tag_len < 4 || tag_len > 16 || tag_len % 2) { |
| 4587 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4588 | } |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4589 | break; |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4590 | #endif /* PSA_WANT_ALG_CCM */ |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4591 | |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4592 | #if defined(PSA_WANT_ALG_GCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4593 | case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_GCM, 0): |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4594 | /* 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] | 4595 | if (tag_len != 4 && tag_len != 8 && (tag_len < 12 || tag_len > 16)) { |
| 4596 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4597 | } |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4598 | break; |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4599 | #endif /* PSA_WANT_ALG_GCM */ |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4600 | |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4601 | #if defined(PSA_WANT_ALG_CHACHA20_POLY1305) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4602 | case PSA_ALG_AEAD_WITH_SHORTENED_TAG(PSA_ALG_CHACHA20_POLY1305, 0): |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4603 | /* We only support the default tag length. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4604 | if (tag_len != 16) { |
| 4605 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4606 | } |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4607 | break; |
Przemek Stekiel | 86679c7 | 2022-10-06 17:06:56 +0200 | [diff] [blame] | 4608 | #endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */ |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4609 | |
| 4610 | default: |
| 4611 | (void) tag_len; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4612 | return PSA_ERROR_NOT_SUPPORTED; |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4613 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4614 | return PSA_SUCCESS; |
Andrzej Kurek | f881601 | 2021-12-19 17:00:12 +0100 | [diff] [blame] | 4615 | } |
| 4616 | |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4617 | /* Set the key for a multipart authenticated operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4618 | static psa_status_t psa_aead_setup(psa_aead_operation_t *operation, |
| 4619 | int is_encrypt, |
| 4620 | mbedtls_svc_key_id_t key, |
| 4621 | psa_algorithm_t alg) |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4622 | { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4623 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4624 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4625 | psa_key_slot_t *slot = NULL; |
| 4626 | psa_key_usage_t key_usage = 0; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4627 | psa_key_attributes_t attributes; |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4628 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4629 | status = psa_aead_check_algorithm(alg); |
| 4630 | if (status != PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4631 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4632 | } |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4633 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4634 | if (operation->id != 0) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4635 | status = PSA_ERROR_BAD_STATE; |
| 4636 | goto exit; |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4637 | } |
| 4638 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4639 | if (operation->nonce_set || operation->lengths_set || |
| 4640 | operation->ad_started || operation->body_started) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4641 | status = PSA_ERROR_BAD_STATE; |
| 4642 | goto exit; |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4643 | } |
| 4644 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4645 | if (is_encrypt) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4646 | key_usage = PSA_KEY_USAGE_ENCRYPT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4647 | } else { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4648 | key_usage = PSA_KEY_USAGE_DECRYPT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4649 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4650 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4651 | status = psa_get_and_lock_key_slot_with_policy(key, &slot, key_usage, |
| 4652 | alg); |
| 4653 | if (status != PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4654 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4655 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4656 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 4657 | attributes = (psa_key_attributes_t) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4658 | .core = slot->attr |
| 4659 | }; |
| 4660 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4661 | if ((status = psa_validate_tag_length(alg)) != PSA_SUCCESS) { |
Przemek Stekiel | 6ab5076 | 2022-10-08 17:54:30 +0200 | [diff] [blame] | 4662 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4663 | } |
Przemek Stekiel | 6ab5076 | 2022-10-08 17:54:30 +0200 | [diff] [blame] | 4664 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4665 | if (is_encrypt) { |
| 4666 | status = psa_driver_wrapper_aead_encrypt_setup(operation, |
| 4667 | &attributes, |
| 4668 | slot->key.data, |
| 4669 | slot->key.bytes, |
| 4670 | alg); |
| 4671 | } else { |
| 4672 | status = psa_driver_wrapper_aead_decrypt_setup(operation, |
| 4673 | &attributes, |
| 4674 | slot->key.data, |
| 4675 | slot->key.bytes, |
| 4676 | alg); |
| 4677 | } |
| 4678 | if (status != PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4679 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4680 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4681 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4682 | operation->key_type = psa_get_key_type(&attributes); |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4683 | |
| 4684 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4685 | unlock_status = psa_unlock_key_slot(slot); |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4686 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4687 | if (status == PSA_SUCCESS) { |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4688 | status = unlock_status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4689 | operation->alg = psa_aead_get_base_algorithm(alg); |
Paul Elliott | d9343f2 | 2021-08-23 18:59:49 +0100 | [diff] [blame] | 4690 | operation->is_encrypt = is_encrypt; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4691 | } else { |
| 4692 | psa_aead_abort(operation); |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4693 | } |
Paul Elliott | e0a12bd | 2021-08-19 18:55:56 +0100 | [diff] [blame] | 4694 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4695 | return status; |
Paul Elliott | c2b7144 | 2021-06-24 18:17:52 +0100 | [diff] [blame] | 4696 | } |
| 4697 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4698 | /* Set the key for a multipart authenticated encryption operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4699 | psa_status_t psa_aead_encrypt_setup(psa_aead_operation_t *operation, |
| 4700 | mbedtls_svc_key_id_t key, |
| 4701 | psa_algorithm_t alg) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4702 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4703 | return psa_aead_setup(operation, 1, key, alg); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4704 | } |
| 4705 | |
| 4706 | /* Set the key for a multipart authenticated decryption operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4707 | psa_status_t psa_aead_decrypt_setup(psa_aead_operation_t *operation, |
| 4708 | mbedtls_svc_key_id_t key, |
| 4709 | psa_algorithm_t alg) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4710 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4711 | return psa_aead_setup(operation, 0, key, alg); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4712 | } |
| 4713 | |
| 4714 | /* Generate a random nonce / IV for multipart AEAD operation */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4715 | psa_status_t psa_aead_generate_nonce(psa_aead_operation_t *operation, |
| 4716 | uint8_t *nonce, |
| 4717 | size_t nonce_size, |
| 4718 | size_t *nonce_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4719 | { |
| 4720 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | cae5909 | 2021-11-26 18:53:58 +0100 | [diff] [blame] | 4721 | uint8_t local_nonce[PSA_AEAD_NONCE_MAX_SIZE]; |
Paul Elliott | b91da71 | 2021-05-20 14:43:47 +0100 | [diff] [blame] | 4722 | size_t required_nonce_size; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4723 | |
Paul Elliott | 8eb9daf | 2021-06-04 16:42:21 +0100 | [diff] [blame] | 4724 | *nonce_length = 0; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4725 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4726 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 4727 | status = PSA_ERROR_BAD_STATE; |
| 4728 | goto exit; |
| 4729 | } |
| 4730 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4731 | if (operation->nonce_set || !operation->is_encrypt) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4732 | status = PSA_ERROR_BAD_STATE; |
| 4733 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4734 | } |
| 4735 | |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 4736 | /* For CCM, this size may not be correct according to the PSA |
| 4737 | * specification. The PSA Crypto 1.0.1 specification states: |
| 4738 | * |
| 4739 | * CCM encodes the plaintext length pLen in L octets, with L the smallest |
| 4740 | * integer >= 2 where pLen < 2^(8L). The nonce length is then 15 - L bytes. |
| 4741 | * |
| 4742 | * However this restriction that L has to be the smallest integer is not |
| 4743 | * applied in practice, and it is not implementable here since the |
| 4744 | * plaintext length may or may not be known at this time. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4745 | required_nonce_size = PSA_AEAD_NONCE_LENGTH(operation->key_type, |
| 4746 | operation->alg); |
| 4747 | if (nonce_size < required_nonce_size) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4748 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 4749 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4750 | } |
| 4751 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4752 | status = psa_generate_random(local_nonce, required_nonce_size); |
| 4753 | if (status != PSA_SUCCESS) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4754 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4755 | } |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4756 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4757 | status = psa_aead_set_nonce(operation, local_nonce, required_nonce_size); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4758 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4759 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4760 | if (status == PSA_SUCCESS) { |
| 4761 | memcpy(nonce, local_nonce, required_nonce_size); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4762 | *nonce_length = required_nonce_size; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4763 | } else { |
| 4764 | psa_aead_abort(operation); |
Ronald Cron | cae5909 | 2021-11-26 18:53:58 +0100 | [diff] [blame] | 4765 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4766 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4767 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4768 | } |
| 4769 | |
| 4770 | /* Set the nonce for a multipart authenticated encryption or decryption |
| 4771 | operation.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4772 | psa_status_t psa_aead_set_nonce(psa_aead_operation_t *operation, |
| 4773 | const uint8_t *nonce, |
| 4774 | size_t nonce_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4775 | { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4776 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4777 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4778 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 4779 | status = PSA_ERROR_BAD_STATE; |
| 4780 | goto exit; |
| 4781 | } |
| 4782 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4783 | if (operation->nonce_set) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4784 | status = PSA_ERROR_BAD_STATE; |
| 4785 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4786 | } |
| 4787 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4788 | status = psa_aead_check_nonce_length(operation->alg, nonce_length); |
| 4789 | if (status != PSA_SUCCESS) { |
Paul Elliott | bb0f9e1 | 2021-09-28 11:14:27 +0100 | [diff] [blame] | 4790 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4791 | goto exit; |
Paul Elliott | 4ed1ed1 | 2021-09-27 18:09:28 +0100 | [diff] [blame] | 4792 | } |
Paul Elliott | 1a98aca | 2021-05-20 18:24:07 +0100 | [diff] [blame] | 4793 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4794 | status = psa_driver_wrapper_aead_set_nonce(operation, nonce, |
| 4795 | nonce_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4796 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4797 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4798 | if (status == PSA_SUCCESS) { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4799 | operation->nonce_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4800 | } else { |
| 4801 | psa_aead_abort(operation); |
| 4802 | } |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4803 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4804 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4805 | } |
| 4806 | |
| 4807 | /* Declare the lengths of the message and additional data for multipart AEAD. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4808 | psa_status_t psa_aead_set_lengths(psa_aead_operation_t *operation, |
| 4809 | size_t ad_length, |
| 4810 | size_t plaintext_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4811 | { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4812 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4813 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4814 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 4815 | status = PSA_ERROR_BAD_STATE; |
| 4816 | goto exit; |
| 4817 | } |
| 4818 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4819 | if (operation->lengths_set || operation->ad_started || |
| 4820 | operation->body_started) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4821 | status = PSA_ERROR_BAD_STATE; |
| 4822 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4823 | } |
| 4824 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4825 | switch (operation->alg) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4826 | #if defined(PSA_WANT_ALG_GCM) |
| 4827 | case PSA_ALG_GCM: |
| 4828 | /* 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] | 4829 | * bits. Without the guard this code will generate warnings on 32bit |
| 4830 | * builds. */ |
Paul Elliott | 325d374 | 2021-09-27 17:56:28 +0100 | [diff] [blame] | 4831 | #if SIZE_MAX > UINT32_MAX |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4832 | if (((uint64_t) ad_length) >> 61 != 0 || |
| 4833 | ((uint64_t) plaintext_length) > 0xFFFFFFFE0ull) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4834 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4835 | goto exit; |
| 4836 | } |
Paul Elliott | 325d374 | 2021-09-27 17:56:28 +0100 | [diff] [blame] | 4837 | #endif |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4838 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4839 | #endif /* PSA_WANT_ALG_GCM */ |
| 4840 | #if defined(PSA_WANT_ALG_CCM) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4841 | case PSA_ALG_CCM: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4842 | if (ad_length > 0xFF00) { |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4843 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4844 | goto exit; |
| 4845 | } |
| 4846 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4847 | #endif /* PSA_WANT_ALG_CCM */ |
| 4848 | #if defined(PSA_WANT_ALG_CHACHA20_POLY1305) |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4849 | case PSA_ALG_CHACHA20_POLY1305: |
| 4850 | /* No length restrictions for ChaChaPoly. */ |
| 4851 | break; |
Paul Elliott | e716e6c | 2021-09-29 14:10:20 +0100 | [diff] [blame] | 4852 | #endif /* PSA_WANT_ALG_CHACHA20_POLY1305 */ |
Przemyslaw Stekiel | 4cad4fc | 2021-10-13 11:12:08 +0200 | [diff] [blame] | 4853 | default: |
| 4854 | break; |
| 4855 | } |
Paul Elliott | 325d374 | 2021-09-27 17:56:28 +0100 | [diff] [blame] | 4856 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4857 | status = psa_driver_wrapper_aead_set_lengths(operation, ad_length, |
| 4858 | plaintext_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4859 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4860 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4861 | if (status == PSA_SUCCESS) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4862 | operation->ad_remaining = ad_length; |
| 4863 | operation->body_remaining = plaintext_length; |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4864 | operation->lengths_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4865 | } else { |
| 4866 | psa_aead_abort(operation); |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4867 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4868 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4869 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4870 | } |
Paul Elliott | 3d7d52c | 2021-09-01 10:33:14 +0100 | [diff] [blame] | 4871 | |
| 4872 | /* Pass additional data to an active multipart AEAD operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4873 | psa_status_t psa_aead_update_ad(psa_aead_operation_t *operation, |
| 4874 | const uint8_t *input, |
| 4875 | size_t input_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4876 | { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4877 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 4878 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4879 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 4880 | status = PSA_ERROR_BAD_STATE; |
| 4881 | goto exit; |
| 4882 | } |
| 4883 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4884 | if (!operation->nonce_set || operation->body_started) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4885 | status = PSA_ERROR_BAD_STATE; |
| 4886 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4887 | } |
| 4888 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4889 | if (operation->lengths_set) { |
| 4890 | if (operation->ad_remaining < input_length) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4891 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4892 | goto exit; |
| 4893 | } |
| 4894 | |
| 4895 | operation->ad_remaining -= input_length; |
| 4896 | } |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 4897 | #if defined(PSA_WANT_ALG_CCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4898 | else if (operation->alg == PSA_ALG_CCM) { |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 4899 | status = PSA_ERROR_BAD_STATE; |
| 4900 | goto exit; |
| 4901 | } |
| 4902 | #endif /* PSA_WANT_ALG_CCM */ |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4903 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4904 | status = psa_driver_wrapper_aead_update_ad(operation, input, |
| 4905 | input_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4906 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4907 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4908 | if (status == PSA_SUCCESS) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4909 | operation->ad_started = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4910 | } else { |
| 4911 | psa_aead_abort(operation); |
| 4912 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4913 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4914 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4915 | } |
| 4916 | |
| 4917 | /* Encrypt or decrypt a message fragment in an active multipart AEAD |
| 4918 | operation.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4919 | psa_status_t psa_aead_update(psa_aead_operation_t *operation, |
| 4920 | const uint8_t *input, |
| 4921 | size_t input_length, |
| 4922 | uint8_t *output, |
| 4923 | size_t output_size, |
| 4924 | size_t *output_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4925 | { |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4926 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4927 | |
| 4928 | *output_length = 0; |
| 4929 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4930 | if (operation->id == 0) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 4931 | status = PSA_ERROR_BAD_STATE; |
| 4932 | goto exit; |
| 4933 | } |
| 4934 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4935 | if (!operation->nonce_set) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4936 | status = PSA_ERROR_BAD_STATE; |
| 4937 | goto exit; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4938 | } |
| 4939 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4940 | if (operation->lengths_set) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4941 | /* Additional data length was supplied, but not all the additional |
| 4942 | data was supplied.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4943 | if (operation->ad_remaining != 0) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4944 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4945 | goto exit; |
| 4946 | } |
| 4947 | |
| 4948 | /* Too much data provided. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4949 | if (operation->body_remaining < input_length) { |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4950 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 4951 | goto exit; |
| 4952 | } |
| 4953 | |
| 4954 | operation->body_remaining -= input_length; |
| 4955 | } |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 4956 | #if defined(PSA_WANT_ALG_CCM) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4957 | else if (operation->alg == PSA_ALG_CCM) { |
Paul Elliott | e193ea8 | 2021-10-01 13:00:16 +0100 | [diff] [blame] | 4958 | status = PSA_ERROR_BAD_STATE; |
| 4959 | goto exit; |
| 4960 | } |
| 4961 | #endif /* PSA_WANT_ALG_CCM */ |
Paul Elliott | ee4ffe0 | 2021-05-20 17:25:06 +0100 | [diff] [blame] | 4962 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4963 | status = psa_driver_wrapper_aead_update(operation, input, input_length, |
| 4964 | output, output_size, |
| 4965 | output_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 4966 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4967 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4968 | if (status == PSA_SUCCESS) { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4969 | operation->body_started = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4970 | } else { |
| 4971 | psa_aead_abort(operation); |
| 4972 | } |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 4973 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4974 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4975 | } |
| 4976 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4977 | 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] | 4978 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4979 | if (operation->id == 0 || !operation->nonce_set) { |
| 4980 | return PSA_ERROR_BAD_STATE; |
| 4981 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 4982 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4983 | if (operation->lengths_set && (operation->ad_remaining != 0 || |
| 4984 | operation->body_remaining != 0)) { |
| 4985 | return PSA_ERROR_INVALID_ARGUMENT; |
| 4986 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 4987 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4988 | return PSA_SUCCESS; |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 4989 | } |
| 4990 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4991 | /* Finish encrypting a message in a multipart AEAD operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 4992 | psa_status_t psa_aead_finish(psa_aead_operation_t *operation, |
| 4993 | uint8_t *ciphertext, |
| 4994 | size_t ciphertext_size, |
| 4995 | size_t *ciphertext_length, |
| 4996 | uint8_t *tag, |
| 4997 | size_t tag_size, |
| 4998 | size_t *tag_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 4999 | { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5000 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5001 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5002 | *ciphertext_length = 0; |
Paul Elliott | f88a565 | 2021-06-22 17:53:45 +0100 | [diff] [blame] | 5003 | *tag_length = tag_size; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5004 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5005 | status = psa_aead_final_checks(operation); |
| 5006 | if (status != PSA_SUCCESS) { |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5007 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5008 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5009 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5010 | if (!operation->is_encrypt) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5011 | status = PSA_ERROR_BAD_STATE; |
| 5012 | goto exit; |
| 5013 | } |
| 5014 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5015 | status = psa_driver_wrapper_aead_finish(operation, ciphertext, |
| 5016 | ciphertext_size, |
| 5017 | ciphertext_length, |
| 5018 | tag, tag_size, tag_length); |
Paul Elliott | cbbde5f | 2021-05-10 18:19:46 +0100 | [diff] [blame] | 5019 | |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5020 | exit: |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 5021 | |
| 5022 | |
Paul Elliott | f47b095 | 2021-05-21 18:02:33 +0100 | [diff] [blame] | 5023 | /* 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] | 5024 | * the zero tag size, make sure the tag is set to something implausible. |
| 5025 | * Even if the operation succeeds, make sure we clear the rest of the |
| 5026 | * buffer to prevent potential leakage of anything previously placed in |
| 5027 | * the same buffer.*/ |
Paul Elliott | dc42ca8 | 2023-02-24 18:11:59 +0000 | [diff] [blame] | 5028 | psa_wipe_tag_output_buffer(tag, status, tag_size, *tag_length); |
Paul Elliott | f47b095 | 2021-05-21 18:02:33 +0100 | [diff] [blame] | 5029 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5030 | psa_aead_abort(operation); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5031 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5032 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5033 | } |
| 5034 | |
| 5035 | /* Finish authenticating and decrypting a message in a multipart AEAD |
| 5036 | operation.*/ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5037 | psa_status_t psa_aead_verify(psa_aead_operation_t *operation, |
| 5038 | uint8_t *plaintext, |
| 5039 | size_t plaintext_size, |
| 5040 | size_t *plaintext_length, |
| 5041 | const uint8_t *tag, |
| 5042 | size_t tag_length) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5043 | { |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5044 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5045 | |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5046 | *plaintext_length = 0; |
| 5047 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5048 | status = psa_aead_final_checks(operation); |
| 5049 | if (status != PSA_SUCCESS) { |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5050 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5051 | } |
Paul Elliott | ad53dcc | 2021-06-23 08:50:14 +0100 | [diff] [blame] | 5052 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5053 | if (operation->is_encrypt) { |
Paul Elliott | cee785c | 2021-05-20 14:29:20 +0100 | [diff] [blame] | 5054 | status = PSA_ERROR_BAD_STATE; |
| 5055 | goto exit; |
| 5056 | } |
| 5057 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5058 | status = psa_driver_wrapper_aead_verify(operation, plaintext, |
| 5059 | plaintext_size, |
| 5060 | plaintext_length, |
| 5061 | tag, tag_length); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5062 | |
| 5063 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5064 | psa_aead_abort(operation); |
Paul Elliott | 39dc6b8 | 2021-05-11 19:16:09 +0100 | [diff] [blame] | 5065 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5066 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5067 | } |
| 5068 | |
| 5069 | /* Abort an AEAD operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5070 | psa_status_t psa_aead_abort(psa_aead_operation_t *operation) |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5071 | { |
| 5072 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5073 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5074 | if (operation->id == 0) { |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5075 | /* The object has (apparently) been initialized but it is not (yet) |
| 5076 | * in use. It's ok to call abort on such an object, and there's |
| 5077 | * nothing to do. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5078 | return PSA_SUCCESS; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5079 | } |
| 5080 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5081 | status = psa_driver_wrapper_aead_abort(operation); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5082 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5083 | memset(operation, 0, sizeof(*operation)); |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5084 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5085 | return status; |
Paul Elliott | 302ff6b | 2021-04-20 18:10:30 +0100 | [diff] [blame] | 5086 | } |
| 5087 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 5088 | /****************************************************************/ |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5089 | /* Generators */ |
| 5090 | /****************************************************************/ |
| 5091 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5092 | #if defined(BUILTIN_ALG_ANY_HKDF) || \ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5093 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5094 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) || \ |
Kusumit Ghoderao | af0b534 | 2023-05-03 11:58:46 +0530 | [diff] [blame] | 5095 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) || \ |
| 5096 | defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5097 | #define AT_LEAST_ONE_BUILTIN_KDF |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5098 | #endif /* At least one builtin KDF */ |
| 5099 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5100 | #if defined(BUILTIN_ALG_ANY_HKDF) || \ |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5101 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 5102 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
| 5103 | static psa_status_t psa_key_derivation_start_hmac( |
| 5104 | psa_mac_operation_t *operation, |
| 5105 | psa_algorithm_t hash_alg, |
| 5106 | const uint8_t *hmac_key, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5107 | size_t hmac_key_length) |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5108 | { |
| 5109 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
| 5110 | psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5111 | psa_set_key_type(&attributes, PSA_KEY_TYPE_HMAC); |
| 5112 | psa_set_key_bits(&attributes, PSA_BYTES_TO_BITS(hmac_key_length)); |
| 5113 | psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_SIGN_HASH); |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5114 | |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 5115 | operation->is_sign = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5116 | operation->mac_size = PSA_HASH_LENGTH(hash_alg); |
Steven Cooreman | 72f736a | 2021-05-07 14:14:37 +0200 | [diff] [blame] | 5117 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5118 | status = psa_driver_wrapper_mac_sign_setup(operation, |
| 5119 | &attributes, |
| 5120 | hmac_key, hmac_key_length, |
| 5121 | PSA_ALG_HMAC(hash_alg)); |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5122 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5123 | psa_reset_key_attributes(&attributes); |
| 5124 | return status; |
Steven Cooreman | 094a77e | 2021-05-06 17:58:36 +0200 | [diff] [blame] | 5125 | } |
| 5126 | #endif /* KDF algorithms reliant on HMAC */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5127 | |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 5128 | #define HKDF_STATE_INIT 0 /* no input yet */ |
| 5129 | #define HKDF_STATE_STARTED 1 /* got salt */ |
| 5130 | #define HKDF_STATE_KEYED 2 /* got key */ |
| 5131 | #define HKDF_STATE_OUTPUT 3 /* output started */ |
| 5132 | |
Gilles Peskine | cbe6650 | 2019-05-16 16:59:18 +0200 | [diff] [blame] | 5133 | static psa_algorithm_t psa_key_derivation_get_kdf_alg( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5134 | const psa_key_derivation_operation_t *operation) |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 5135 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5136 | if (PSA_ALG_IS_KEY_AGREEMENT(operation->alg)) { |
| 5137 | return PSA_ALG_KEY_AGREEMENT_GET_KDF(operation->alg); |
| 5138 | } else { |
| 5139 | return operation->alg; |
| 5140 | } |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 5141 | } |
| 5142 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5143 | 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] | 5144 | { |
| 5145 | psa_status_t status = PSA_SUCCESS; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5146 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
| 5147 | if (kdf_alg == 0) { |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5148 | /* The object has (apparently) been initialized but it is not |
| 5149 | * in use. It's ok to call abort on such an object, and there's |
| 5150 | * nothing to do. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5151 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5152 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5153 | if (PSA_ALG_IS_ANY_HKDF(kdf_alg)) { |
| 5154 | mbedtls_free(operation->ctx.hkdf.info); |
| 5155 | status = psa_mac_abort(&operation->ctx.hkdf.hmac); |
| 5156 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5157 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5158 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 5159 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5160 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg) || |
| 5161 | /* TLS-1.2 PSK-to-MS KDF uses the same core as TLS-1.2 PRF */ |
| 5162 | PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 5163 | if (operation->ctx.tls12_prf.secret != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5164 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.secret, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5165 | operation->ctx.tls12_prf.secret_length); |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5166 | } |
| 5167 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5168 | if (operation->ctx.tls12_prf.seed != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5169 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.seed, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5170 | operation->ctx.tls12_prf.seed_length); |
Janos Follath | 6a1d262 | 2019-06-11 10:37:28 +0100 | [diff] [blame] | 5171 | } |
| 5172 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5173 | if (operation->ctx.tls12_prf.label != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5174 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.label, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5175 | operation->ctx.tls12_prf.label_length); |
Janos Follath | 6a1d262 | 2019-06-11 10:37:28 +0100 | [diff] [blame] | 5176 | } |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 5177 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5178 | if (operation->ctx.tls12_prf.other_secret != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5179 | mbedtls_zeroize_and_free(operation->ctx.tls12_prf.other_secret, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5180 | operation->ctx.tls12_prf.other_secret_length); |
Przemek Stekiel | e3ee221 | 2022-04-07 14:29:56 +0200 | [diff] [blame] | 5181 | } |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 5182 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5183 | status = PSA_SUCCESS; |
Janos Follath | 6a1d262 | 2019-06-11 10:37:28 +0100 | [diff] [blame] | 5184 | |
| 5185 | /* We leave the fields Ai and output_block to be erased safely by the |
| 5186 | * mbedtls_platform_zeroize() in the end of this function. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5187 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5188 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || |
| 5189 | * defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5190 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5191 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 5192 | mbedtls_platform_zeroize(operation->ctx.tls12_ecjpake_to_pms.data, |
| 5193 | sizeof(operation->ctx.tls12_ecjpake_to_pms.data)); |
| 5194 | } else |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5195 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) */ |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5196 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 5197 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5198 | if (operation->ctx.pbkdf2.salt != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 5199 | mbedtls_zeroize_and_free(operation->ctx.pbkdf2.salt, |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5200 | operation->ctx.pbkdf2.salt_length); |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5201 | } |
Kusumit Ghoderao | f5fedf1 | 2023-05-03 12:29:48 +0530 | [diff] [blame] | 5202 | |
| 5203 | status = PSA_SUCCESS; |
| 5204 | } else |
| 5205 | #endif /* defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) */ |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5206 | { |
| 5207 | status = PSA_ERROR_BAD_STATE; |
| 5208 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5209 | mbedtls_platform_zeroize(operation, sizeof(*operation)); |
| 5210 | return status; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5211 | } |
| 5212 | |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5213 | 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] | 5214 | size_t *capacity) |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5215 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5216 | if (operation->alg == 0) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5217 | /* This is a blank key derivation operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5218 | return PSA_ERROR_BAD_STATE; |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 5219 | } |
| 5220 | |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5221 | *capacity = operation->capacity; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5222 | return PSA_SUCCESS; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5223 | } |
| 5224 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5225 | psa_status_t psa_key_derivation_set_capacity(psa_key_derivation_operation_t *operation, |
| 5226 | size_t capacity) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 5227 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5228 | if (operation->alg == 0) { |
| 5229 | return PSA_ERROR_BAD_STATE; |
| 5230 | } |
| 5231 | if (capacity > operation->capacity) { |
| 5232 | return PSA_ERROR_INVALID_ARGUMENT; |
| 5233 | } |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5234 | operation->capacity = capacity; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5235 | return PSA_SUCCESS; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5236 | } |
| 5237 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5238 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 5239 | /* Read some bytes from an HKDF-based operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5240 | static psa_status_t psa_key_derivation_hkdf_read(psa_hkdf_key_derivation_t *hkdf, |
| 5241 | psa_algorithm_t kdf_alg, |
| 5242 | uint8_t *output, |
| 5243 | size_t output_length) |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5244 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5245 | psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg); |
| 5246 | uint8_t hash_length = PSA_HASH_LENGTH(hash_alg); |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 5247 | size_t hmac_output_length; |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5248 | psa_status_t status; |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 5249 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5250 | 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] | 5251 | #else |
| 5252 | const uint8_t last_block = 0xff; |
| 5253 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5254 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5255 | if (hkdf->state < HKDF_STATE_KEYED || |
| 5256 | (!hkdf->info_set |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 5257 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5258 | && !PSA_ALG_IS_HKDF_EXTRACT(kdf_alg) |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 5259 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5260 | )) { |
| 5261 | return PSA_ERROR_BAD_STATE; |
| 5262 | } |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 5263 | hkdf->state = HKDF_STATE_OUTPUT; |
| 5264 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5265 | while (output_length != 0) { |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5266 | /* Copy what remains of the current block */ |
| 5267 | uint8_t n = hash_length - hkdf->offset_in_block; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5268 | if (n > output_length) { |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5269 | n = (uint8_t) output_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5270 | } |
| 5271 | memcpy(output, hkdf->output_block + hkdf->offset_in_block, n); |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5272 | output += n; |
| 5273 | output_length -= n; |
| 5274 | hkdf->offset_in_block += n; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5275 | if (output_length == 0) { |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5276 | break; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5277 | } |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 5278 | /* We can't be wanting more output after the last block, otherwise |
Gilles Peskine | a99d3fb | 2019-05-16 15:28:51 +0200 | [diff] [blame] | 5279 | * the capacity check in psa_key_derivation_output_bytes() would have |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5280 | * prevented this call. It could happen only if the operation |
Gilles Peskine | d54931c | 2018-07-17 21:06:59 +0200 | [diff] [blame] | 5281 | * object was corrupted or if this function is called directly |
| 5282 | * inside the library. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5283 | if (hkdf->block_number == last_block) { |
| 5284 | return PSA_ERROR_BAD_STATE; |
| 5285 | } |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5286 | |
| 5287 | /* We need a new block */ |
| 5288 | ++hkdf->block_number; |
| 5289 | hkdf->offset_in_block = 0; |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 5290 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5291 | status = psa_key_derivation_start_hmac(&hkdf->hmac, |
| 5292 | hash_alg, |
| 5293 | hkdf->prk, |
| 5294 | hash_length); |
| 5295 | if (status != PSA_SUCCESS) { |
| 5296 | return status; |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5297 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5298 | |
| 5299 | if (hkdf->block_number != 1) { |
| 5300 | status = psa_mac_update(&hkdf->hmac, |
| 5301 | hkdf->output_block, |
| 5302 | hash_length); |
| 5303 | if (status != PSA_SUCCESS) { |
| 5304 | return status; |
| 5305 | } |
| 5306 | } |
| 5307 | status = psa_mac_update(&hkdf->hmac, |
| 5308 | hkdf->info, |
| 5309 | hkdf->info_length); |
| 5310 | if (status != PSA_SUCCESS) { |
| 5311 | return status; |
| 5312 | } |
| 5313 | status = psa_mac_update(&hkdf->hmac, |
| 5314 | &hkdf->block_number, 1); |
| 5315 | if (status != PSA_SUCCESS) { |
| 5316 | return status; |
| 5317 | } |
| 5318 | status = psa_mac_sign_finish(&hkdf->hmac, |
| 5319 | hkdf->output_block, |
| 5320 | sizeof(hkdf->output_block), |
| 5321 | &hmac_output_length); |
| 5322 | if (status != PSA_SUCCESS) { |
| 5323 | return status; |
| 5324 | } |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5325 | } |
| 5326 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5327 | return PSA_SUCCESS; |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5328 | } |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5329 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
Hanno Becker | c8a41d7 | 2018-10-09 17:33:01 +0100 | [diff] [blame] | 5330 | |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5331 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 5332 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5333 | static psa_status_t psa_key_derivation_tls12_prf_generate_next_block( |
| 5334 | psa_tls12_prf_key_derivation_t *tls12_prf, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5335 | psa_algorithm_t alg) |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5336 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5337 | psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(alg); |
| 5338 | uint8_t hash_length = PSA_HASH_LENGTH(hash_alg); |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5339 | psa_mac_operation_t hmac = PSA_MAC_OPERATION_INIT; |
| 5340 | size_t hmac_output_length; |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5341 | psa_status_t status, cleanup_status; |
Hanno Becker | c8a41d7 | 2018-10-09 17:33:01 +0100 | [diff] [blame] | 5342 | |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5343 | /* We can't be wanting more output after block 0xff, otherwise |
| 5344 | * the capacity check in psa_key_derivation_output_bytes() would have |
| 5345 | * prevented this call. It could happen only if the operation |
| 5346 | * object was corrupted or if this function is called directly |
| 5347 | * inside the library. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5348 | if (tls12_prf->block_number == 0xff) { |
| 5349 | return PSA_ERROR_CORRUPTION_DETECTED; |
| 5350 | } |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5351 | |
| 5352 | /* We need a new block */ |
| 5353 | ++tls12_prf->block_number; |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5354 | tls12_prf->left_in_block = hash_length; |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5355 | |
| 5356 | /* Recall the definition of the TLS-1.2-PRF from RFC 5246: |
| 5357 | * |
| 5358 | * PRF(secret, label, seed) = P_<hash>(secret, label + seed) |
| 5359 | * |
| 5360 | * P_hash(secret, seed) = HMAC_hash(secret, A(1) + seed) + |
| 5361 | * HMAC_hash(secret, A(2) + seed) + |
| 5362 | * HMAC_hash(secret, A(3) + seed) + ... |
| 5363 | * |
| 5364 | * A(0) = seed |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5365 | * A(i) = HMAC_hash(secret, A(i-1)) |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5366 | * |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5367 | * The `psa_tls12_prf_key_derivation` structure saves the block |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5368 | * `HMAC_hash(secret, A(i) + seed)` from which the output |
Janos Follath | 76c3984 | 2019-06-26 12:50:36 +0100 | [diff] [blame] | 5369 | * is currently extracted as `output_block` and where i is |
| 5370 | * `block_number`. |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5371 | */ |
| 5372 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5373 | status = psa_key_derivation_start_hmac(&hmac, |
| 5374 | hash_alg, |
| 5375 | tls12_prf->secret, |
| 5376 | tls12_prf->secret_length); |
| 5377 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5378 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5379 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5380 | |
| 5381 | /* Calculate A(i) where i = tls12_prf->block_number. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5382 | if (tls12_prf->block_number == 1) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5383 | /* A(1) = HMAC_hash(secret, A(0)), where A(0) = seed. (The RFC overloads |
| 5384 | * the variable seed and in this instance means it in the context of the |
| 5385 | * P_hash function, where seed = label + seed.) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5386 | status = psa_mac_update(&hmac, |
| 5387 | tls12_prf->label, |
| 5388 | tls12_prf->label_length); |
| 5389 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5390 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5391 | } |
| 5392 | status = psa_mac_update(&hmac, |
| 5393 | tls12_prf->seed, |
| 5394 | tls12_prf->seed_length); |
| 5395 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5396 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5397 | } |
| 5398 | } else { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5399 | /* A(i) = HMAC_hash(secret, A(i-1)) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5400 | status = psa_mac_update(&hmac, tls12_prf->Ai, hash_length); |
| 5401 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5402 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5403 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5404 | } |
| 5405 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5406 | status = psa_mac_sign_finish(&hmac, |
| 5407 | tls12_prf->Ai, hash_length, |
| 5408 | &hmac_output_length); |
| 5409 | if (hmac_output_length != hash_length) { |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 5410 | status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5411 | } |
| 5412 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5413 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5414 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5415 | |
| 5416 | /* Calculate HMAC_hash(secret, A(i) + label + seed). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5417 | status = psa_key_derivation_start_hmac(&hmac, |
| 5418 | hash_alg, |
| 5419 | tls12_prf->secret, |
| 5420 | tls12_prf->secret_length); |
| 5421 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5422 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5423 | } |
| 5424 | status = psa_mac_update(&hmac, tls12_prf->Ai, hash_length); |
| 5425 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5426 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5427 | } |
| 5428 | status = psa_mac_update(&hmac, tls12_prf->label, tls12_prf->label_length); |
| 5429 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5430 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5431 | } |
| 5432 | status = psa_mac_update(&hmac, tls12_prf->seed, tls12_prf->seed_length); |
| 5433 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5434 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5435 | } |
| 5436 | status = psa_mac_sign_finish(&hmac, |
| 5437 | tls12_prf->output_block, hash_length, |
| 5438 | &hmac_output_length); |
| 5439 | if (status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5440 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5441 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5442 | |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5443 | |
| 5444 | cleanup: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5445 | cleanup_status = psa_mac_abort(&hmac); |
| 5446 | if (status == PSA_SUCCESS && cleanup_status != PSA_SUCCESS) { |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5447 | status = cleanup_status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5448 | } |
Janos Follath | ea29bfb | 2019-06-19 12:21:20 +0100 | [diff] [blame] | 5449 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5450 | return status; |
Janos Follath | 7742fee | 2019-06-17 12:58:10 +0100 | [diff] [blame] | 5451 | } |
Hanno Becker | c8a41d7 | 2018-10-09 17:33:01 +0100 | [diff] [blame] | 5452 | |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5453 | static psa_status_t psa_key_derivation_tls12_prf_read( |
| 5454 | psa_tls12_prf_key_derivation_t *tls12_prf, |
| 5455 | psa_algorithm_t alg, |
| 5456 | uint8_t *output, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5457 | size_t output_length) |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5458 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5459 | psa_algorithm_t hash_alg = PSA_ALG_TLS12_PRF_GET_HASH(alg); |
| 5460 | uint8_t hash_length = PSA_HASH_LENGTH(hash_alg); |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5461 | psa_status_t status; |
| 5462 | uint8_t offset, length; |
| 5463 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5464 | switch (tls12_prf->state) { |
Gilles Peskine | b1edaec | 2021-06-11 22:41:46 +0200 | [diff] [blame] | 5465 | case PSA_TLS12_PRF_STATE_LABEL_SET: |
| 5466 | tls12_prf->state = PSA_TLS12_PRF_STATE_OUTPUT; |
| 5467 | break; |
| 5468 | case PSA_TLS12_PRF_STATE_OUTPUT: |
| 5469 | break; |
| 5470 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5471 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | b1edaec | 2021-06-11 22:41:46 +0200 | [diff] [blame] | 5472 | } |
| 5473 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5474 | while (output_length != 0) { |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5475 | /* Check if we have fully processed the current block. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5476 | if (tls12_prf->left_in_block == 0) { |
| 5477 | status = psa_key_derivation_tls12_prf_generate_next_block(tls12_prf, |
| 5478 | alg); |
| 5479 | if (status != PSA_SUCCESS) { |
| 5480 | return status; |
| 5481 | } |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5482 | |
| 5483 | continue; |
| 5484 | } |
| 5485 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5486 | if (tls12_prf->left_in_block > output_length) { |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5487 | length = (uint8_t) output_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5488 | } else { |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5489 | length = tls12_prf->left_in_block; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5490 | } |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5491 | |
| 5492 | offset = hash_length - tls12_prf->left_in_block; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5493 | memcpy(output, tls12_prf->output_block + offset, length); |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5494 | output += length; |
| 5495 | output_length -= length; |
| 5496 | tls12_prf->left_in_block -= length; |
| 5497 | } |
| 5498 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5499 | return PSA_SUCCESS; |
Janos Follath | 844eb0e | 2019-06-19 12:10:49 +0100 | [diff] [blame] | 5500 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5501 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF || |
| 5502 | * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Gilles Peskine | bef7f14 | 2018-07-12 17:22:21 +0200 | [diff] [blame] | 5503 | |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5504 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
| 5505 | static psa_status_t psa_key_derivation_tls12_ecjpake_to_pms_read( |
| 5506 | psa_tls12_ecjpake_to_pms_t *ecjpake, |
| 5507 | uint8_t *output, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5508 | size_t output_length) |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5509 | { |
| 5510 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Andrzej Kurek | 5603efd | 2022-09-26 10:49:16 -0400 | [diff] [blame] | 5511 | size_t output_size = 0; |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5512 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5513 | if (output_length != 32) { |
| 5514 | return PSA_ERROR_INVALID_ARGUMENT; |
| 5515 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5516 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5517 | status = psa_hash_compute(PSA_ALG_SHA_256, ecjpake->data, |
| 5518 | PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE, output, output_length, |
| 5519 | &output_size); |
| 5520 | if (status != PSA_SUCCESS) { |
| 5521 | return status; |
| 5522 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5523 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5524 | if (output_size != output_length) { |
| 5525 | return PSA_ERROR_GENERIC_ERROR; |
| 5526 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5527 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5528 | return PSA_SUCCESS; |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5529 | } |
| 5530 | #endif |
| 5531 | |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5532 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 5533 | static psa_status_t psa_key_derivation_pbkdf2_generate_block( |
| 5534 | psa_pbkdf2_key_derivation_t *pbkdf2, |
| 5535 | psa_algorithm_t prf_alg, |
| 5536 | uint8_t prf_output_length, |
| 5537 | psa_key_attributes_t *attributes) |
| 5538 | { |
| 5539 | psa_status_t status; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5540 | psa_mac_operation_t mac_operation = PSA_MAC_OPERATION_INIT; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5541 | size_t mac_output_length; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5542 | uint8_t U_i[PSA_MAC_MAX_SIZE]; |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5543 | uint8_t *U_accumulator = pbkdf2->output_block; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5544 | uint64_t i; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5545 | uint8_t block_counter[4]; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5546 | |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5547 | mac_operation.is_sign = 1; |
| 5548 | mac_operation.mac_size = prf_output_length; |
| 5549 | MBEDTLS_PUT_UINT32_BE(pbkdf2->block_number, block_counter, 0); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5550 | |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5551 | status = psa_driver_wrapper_mac_sign_setup(&mac_operation, |
| 5552 | attributes, |
| 5553 | pbkdf2->password, |
| 5554 | pbkdf2->password_length, |
| 5555 | prf_alg); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5556 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5557 | goto cleanup; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5558 | } |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5559 | status = psa_mac_update(&mac_operation, pbkdf2->salt, pbkdf2->salt_length); |
| 5560 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5561 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5562 | } |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5563 | status = psa_mac_update(&mac_operation, block_counter, sizeof(block_counter)); |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5564 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5565 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5566 | } |
| 5567 | status = psa_mac_sign_finish(&mac_operation, U_i, sizeof(U_i), |
| 5568 | &mac_output_length); |
| 5569 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5570 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5571 | } |
| 5572 | |
| 5573 | if (mac_output_length != prf_output_length) { |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5574 | status = PSA_ERROR_CORRUPTION_DETECTED; |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5575 | goto cleanup; |
Kusumit Ghoderao | b821a5f | 2023-06-08 16:35:55 +0530 | [diff] [blame] | 5576 | } |
| 5577 | |
Kusumit Ghoderao | 257ea00 | 2023-06-14 15:55:11 +0530 | [diff] [blame] | 5578 | memcpy(U_accumulator, U_i, prf_output_length); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5579 | |
| 5580 | for (i = 1; i < pbkdf2->input_cost; i++) { |
| 5581 | status = psa_driver_wrapper_mac_compute(attributes, |
| 5582 | pbkdf2->password, |
| 5583 | pbkdf2->password_length, |
| 5584 | prf_alg, U_i, prf_output_length, |
Kusumit Ghoderao | 109ee3d | 2023-06-08 16:36:45 +0530 | [diff] [blame] | 5585 | U_i, sizeof(U_i), |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5586 | &mac_output_length); |
| 5587 | if (status != PSA_SUCCESS) { |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5588 | goto cleanup; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5589 | } |
| 5590 | |
Kusumit Ghoderao | 109ee3d | 2023-06-08 16:36:45 +0530 | [diff] [blame] | 5591 | mbedtls_xor(U_accumulator, U_accumulator, U_i, prf_output_length); |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5592 | } |
Kusumit Ghoderao | 246e51f | 2023-06-15 22:15:43 +0530 | [diff] [blame] | 5593 | |
| 5594 | cleanup: |
| 5595 | /* Zeroise buffers to clear sensitive data from memory. */ |
| 5596 | mbedtls_platform_zeroize(U_i, PSA_MAC_MAX_SIZE); |
| 5597 | return status; |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5598 | } |
Kusumit Ghoderao | f6a0d57 | 2023-06-05 14:55:56 +0530 | [diff] [blame] | 5599 | |
| 5600 | static psa_status_t psa_key_derivation_pbkdf2_read( |
| 5601 | psa_pbkdf2_key_derivation_t *pbkdf2, |
| 5602 | psa_algorithm_t kdf_alg, |
| 5603 | uint8_t *output, |
| 5604 | size_t output_length) |
| 5605 | { |
| 5606 | psa_status_t status; |
| 5607 | psa_algorithm_t prf_alg; |
| 5608 | uint8_t prf_output_length; |
| 5609 | psa_key_attributes_t attributes = PSA_KEY_ATTRIBUTES_INIT; |
| 5610 | psa_set_key_bits(&attributes, PSA_BYTES_TO_BITS(pbkdf2->password_length)); |
| 5611 | psa_set_key_usage_flags(&attributes, PSA_KEY_USAGE_SIGN_MESSAGE); |
| 5612 | |
| 5613 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 5614 | prf_alg = PSA_ALG_HMAC(PSA_ALG_PBKDF2_HMAC_GET_HASH(kdf_alg)); |
| 5615 | prf_output_length = PSA_HASH_LENGTH(prf_alg); |
| 5616 | psa_set_key_type(&attributes, PSA_KEY_TYPE_HMAC); |
Kusumit Ghoderao | d9ec1af | 2023-06-08 20:19:51 +0530 | [diff] [blame] | 5617 | } else { |
| 5618 | return PSA_ERROR_INVALID_ARGUMENT; |
Kusumit Ghoderao | f6a0d57 | 2023-06-05 14:55:56 +0530 | [diff] [blame] | 5619 | } |
| 5620 | |
| 5621 | switch (pbkdf2->state) { |
| 5622 | case PSA_PBKDF2_STATE_PASSWORD_SET: |
| 5623 | /* Initially we need a new block so bytes_used is equal to block size*/ |
| 5624 | pbkdf2->bytes_used = prf_output_length; |
| 5625 | pbkdf2->state = PSA_PBKDF2_STATE_OUTPUT; |
| 5626 | break; |
| 5627 | case PSA_PBKDF2_STATE_OUTPUT: |
| 5628 | break; |
| 5629 | default: |
| 5630 | return PSA_ERROR_BAD_STATE; |
| 5631 | } |
| 5632 | |
| 5633 | while (output_length != 0) { |
| 5634 | uint8_t n = prf_output_length - pbkdf2->bytes_used; |
| 5635 | if (n > output_length) { |
| 5636 | n = (uint8_t) output_length; |
| 5637 | } |
| 5638 | memcpy(output, pbkdf2->output_block + pbkdf2->bytes_used, n); |
| 5639 | output += n; |
| 5640 | output_length -= n; |
| 5641 | pbkdf2->bytes_used += n; |
| 5642 | |
| 5643 | if (output_length == 0) { |
| 5644 | break; |
| 5645 | } |
| 5646 | |
| 5647 | /* We need a new block */ |
| 5648 | pbkdf2->bytes_used = 0; |
| 5649 | pbkdf2->block_number++; |
| 5650 | |
| 5651 | status = psa_key_derivation_pbkdf2_generate_block(pbkdf2, prf_alg, |
| 5652 | prf_output_length, |
| 5653 | &attributes); |
| 5654 | if (status != PSA_SUCCESS) { |
| 5655 | return status; |
| 5656 | } |
| 5657 | } |
| 5658 | |
| 5659 | return PSA_SUCCESS; |
| 5660 | } |
Kusumit Ghoderao | a4346cd | 2023-06-05 14:50:20 +0530 | [diff] [blame] | 5661 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */ |
| 5662 | |
Janos Follath | 6c6c8fc | 2019-06-17 12:38:20 +0100 | [diff] [blame] | 5663 | psa_status_t psa_key_derivation_output_bytes( |
| 5664 | psa_key_derivation_operation_t *operation, |
| 5665 | uint8_t *output, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5666 | size_t output_length) |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5667 | { |
| 5668 | psa_status_t status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5669 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5670 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5671 | if (operation->alg == 0) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5672 | /* This is a blank operation. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5673 | return PSA_ERROR_BAD_STATE; |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 5674 | } |
| 5675 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5676 | if (output_length > operation->capacity) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5677 | operation->capacity = 0; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5678 | /* Go through the error path to wipe all confidential data now |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5679 | * that the operation object is useless. */ |
David Saada | b4ecc27 | 2019-02-14 13:48:10 +0200 | [diff] [blame] | 5680 | status = PSA_ERROR_INSUFFICIENT_DATA; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5681 | goto exit; |
| 5682 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5683 | if (output_length == 0 && operation->capacity == 0) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5684 | /* Edge case: this is a finished operation, and 0 bytes |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 5685 | * were requested. The right error in this case could |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5686 | * be either INSUFFICIENT_CAPACITY or BAD_STATE. Return |
| 5687 | * INSUFFICIENT_CAPACITY, which is right for a finished |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5688 | * operation, for consistency with the case when |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5689 | * output_length > 0. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5690 | return PSA_ERROR_INSUFFICIENT_DATA; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5691 | } |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5692 | operation->capacity -= output_length; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5693 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5694 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5695 | if (PSA_ALG_IS_ANY_HKDF(kdf_alg)) { |
| 5696 | status = psa_key_derivation_hkdf_read(&operation->ctx.hkdf, kdf_alg, |
| 5697 | output, output_length); |
| 5698 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 5699 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5700 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 5701 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5702 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg) || |
| 5703 | PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 5704 | status = psa_key_derivation_tls12_prf_read(&operation->ctx.tls12_prf, |
| 5705 | kdf_alg, output, |
| 5706 | output_length); |
| 5707 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 5708 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF || |
| 5709 | * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5710 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5711 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5712 | status = psa_key_derivation_tls12_ecjpake_to_pms_read( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5713 | &operation->ctx.tls12_ecjpake_to_pms, output, output_length); |
| 5714 | } else |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5715 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */ |
Kusumit Ghoderao | 056f0c5 | 2023-05-03 15:58:34 +0530 | [diff] [blame] | 5716 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 5717 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
Kusumit Ghoderao | f6a0d57 | 2023-06-05 14:55:56 +0530 | [diff] [blame] | 5718 | status = psa_key_derivation_pbkdf2_read(&operation->ctx.pbkdf2, kdf_alg, |
| 5719 | output, output_length); |
Kusumit Ghoderao | 056f0c5 | 2023-05-03 15:58:34 +0530 | [diff] [blame] | 5720 | } else |
| 5721 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 5722 | |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5723 | { |
Steven Cooreman | 74afe47 | 2021-02-10 17:19:22 +0100 | [diff] [blame] | 5724 | (void) kdf_alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5725 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5726 | } |
| 5727 | |
| 5728 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5729 | if (status != PSA_SUCCESS) { |
Jaeden Amero | cf2010c | 2019-02-15 13:05:49 +0000 | [diff] [blame] | 5730 | /* Preserve the algorithm upon errors, but clear all sensitive state. |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5731 | * This allows us to differentiate between exhausted operations and |
| 5732 | * blank operations, so we can return PSA_ERROR_BAD_STATE on blank |
| 5733 | * operations. */ |
| 5734 | psa_algorithm_t alg = operation->alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5735 | psa_key_derivation_abort(operation); |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 5736 | operation->alg = alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5737 | memset(output, '!', output_length); |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5738 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5739 | return status; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5740 | } |
| 5741 | |
David Brown | 7807bf7 | 2021-02-09 16:28:23 -0700 | [diff] [blame] | 5742 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5743 | 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] | 5744 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5745 | if (data_size >= 8) { |
| 5746 | mbedtls_des_key_set_parity(data); |
| 5747 | } |
| 5748 | if (data_size >= 16) { |
| 5749 | mbedtls_des_key_set_parity(data + 8); |
| 5750 | } |
| 5751 | if (data_size >= 24) { |
| 5752 | mbedtls_des_key_set_parity(data + 16); |
| 5753 | } |
Gilles Peskine | 08542d8 | 2018-07-19 17:05:42 +0200 | [diff] [blame] | 5754 | } |
David Brown | 7807bf7 | 2021-02-09 16:28:23 -0700 | [diff] [blame] | 5755 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */ |
Gilles Peskine | 08542d8 | 2018-07-19 17:05:42 +0200 | [diff] [blame] | 5756 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5757 | /* |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5758 | * ECC keys on a Weierstrass elliptic curve require the generation |
| 5759 | * of a private key which is an integer |
| 5760 | * in the range [1, N - 1], where N is the boundary of the private key domain: |
| 5761 | * N is the prime p for Diffie-Hellman, or the order of the |
| 5762 | * curve’s base point for ECC. |
| 5763 | * |
| 5764 | * Let m be the bit size of N, such that 2^m > N >= 2^(m-1). |
| 5765 | * This function generates the private key using the following process: |
| 5766 | * |
| 5767 | * 1. Draw a byte string of length ceiling(m/8) bytes. |
| 5768 | * 2. If m is not a multiple of 8, set the most significant |
| 5769 | * (8 * ceiling(m/8) - m) bits of the first byte in the string to zero. |
| 5770 | * 3. Convert the string to integer k by decoding it as a big-endian byte string. |
| 5771 | * 4. If k > N - 2, discard the result and return to step 1. |
| 5772 | * 5. Output k + 1 as the private key. |
| 5773 | * |
| 5774 | * This method allows compliance to NIST standards, specifically the methods titled |
| 5775 | * Key-Pair Generation by Testing Candidates in the following publications: |
| 5776 | * - NIST Special Publication 800-56A: Recommendation for Pair-Wise Key-Establishment |
| 5777 | * Schemes Using Discrete Logarithm Cryptography [SP800-56A] §5.6.1.1.4 for |
| 5778 | * Diffie-Hellman keys. |
| 5779 | * |
| 5780 | * - [SP800-56A] §5.6.1.2.2 or FIPS Publication 186-4: Digital Signature |
| 5781 | * Standard (DSS) [FIPS186-4] §B.4.2 for elliptic curve keys. |
| 5782 | * |
| 5783 | * Note: Function allocates memory for *data buffer, so given *data should be |
| 5784 | * always NULL. |
| 5785 | */ |
Valerio Setti | 86587ab | 2023-06-27 13:09:30 +0200 | [diff] [blame] | 5786 | #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE) |
| 5787 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE) |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 5788 | static psa_status_t psa_generate_derived_ecc_key_weierstrass_helper( |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5789 | psa_key_slot_t *slot, |
| 5790 | size_t bits, |
| 5791 | psa_key_derivation_operation_t *operation, |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5792 | uint8_t **data |
| 5793 | ) |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5794 | { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5795 | unsigned key_out_of_range = 1; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5796 | mbedtls_mpi k; |
| 5797 | mbedtls_mpi diff_N_2; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5798 | int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | a81aed2 | 2022-03-01 15:13:30 +0100 | [diff] [blame] | 5799 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 5800 | size_t m; |
| 5801 | size_t m_bytes; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5802 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5803 | mbedtls_mpi_init(&k); |
| 5804 | mbedtls_mpi_init(&diff_N_2); |
Przemyslaw Stekiel | 1dfd122 | 2021-11-18 13:35:00 +0100 | [diff] [blame] | 5805 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5806 | psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5807 | slot->attr.type); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5808 | mbedtls_ecp_group_id grp_id = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5809 | mbedtls_ecc_group_of_psa(curve, bits, 0); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5810 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5811 | if (grp_id == MBEDTLS_ECP_DP_NONE) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5812 | ret = MBEDTLS_ERR_ASN1_INVALID_DATA; |
Przemyslaw Stekiel | 871a336 | 2021-12-02 08:46:39 +0100 | [diff] [blame] | 5813 | goto cleanup; |
| 5814 | } |
| 5815 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5816 | mbedtls_ecp_group ecp_group; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5817 | mbedtls_ecp_group_init(&ecp_group); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5818 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5819 | MBEDTLS_MPI_CHK(mbedtls_ecp_group_load(&ecp_group, grp_id)); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5820 | |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5821 | /* N is the boundary of the private key domain (ecp_group.N). */ |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5822 | /* Let m be the bit size of N. */ |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 5823 | m = ecp_group.nbits; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5824 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 5825 | m_bytes = PSA_BITS_TO_BYTES(m); |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5826 | |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5827 | /* Calculate N - 2 - it will be needed later. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5828 | 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] | 5829 | |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5830 | /* Note: This function is always called with *data == NULL and it |
| 5831 | * allocates memory for the data buffer. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5832 | *data = mbedtls_calloc(1, m_bytes); |
| 5833 | if (*data == NULL) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5834 | ret = MBEDTLS_ERR_ASN1_ALLOC_FAILED; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5835 | goto cleanup; |
| 5836 | } |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5837 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5838 | while (key_out_of_range) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5839 | /* 1. Draw a byte string of length ceiling(m/8) bytes. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5840 | if ((status = psa_key_derivation_output_bytes(operation, *data, m_bytes)) != 0) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5841 | goto cleanup; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5842 | } |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5843 | |
| 5844 | /* 2. If m is not a multiple of 8 */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5845 | if (m % 8 != 0) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5846 | /* Set the most significant |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5847 | * (8 * ceiling(m/8) - m) bits of the first byte in |
| 5848 | * the string to zero. |
| 5849 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5850 | uint8_t clear_bit_mask = (1 << (m % 8)) - 1; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5851 | (*data)[0] &= clear_bit_mask; |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5852 | } |
| 5853 | |
| 5854 | /* 3. Convert the string to integer k by decoding it as a |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5855 | * big-endian byte string. |
| 5856 | */ |
| 5857 | MBEDTLS_MPI_CHK(mbedtls_mpi_read_binary(&k, *data, m_bytes)); |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5858 | |
| 5859 | /* 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] | 5860 | * Result of comparison is returned. When it indicates error |
| 5861 | * then this function is called again. |
| 5862 | */ |
| 5863 | 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] | 5864 | } |
| 5865 | |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5866 | /* 5. Output k + 1 as the private key. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5867 | MBEDTLS_MPI_CHK(mbedtls_mpi_add_int(&k, &k, 1)); |
| 5868 | MBEDTLS_MPI_CHK(mbedtls_mpi_write_binary(&k, *data, m_bytes)); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5869 | cleanup: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5870 | if (ret != 0) { |
| 5871 | status = mbedtls_to_psa_error(ret); |
| 5872 | } |
| 5873 | if (status != PSA_SUCCESS) { |
| 5874 | mbedtls_free(*data); |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5875 | *data = NULL; |
| 5876 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5877 | mbedtls_mpi_free(&k); |
| 5878 | mbedtls_mpi_free(&diff_N_2); |
| 5879 | return status; |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5880 | } |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5881 | |
| 5882 | /* ECC keys on a Montgomery elliptic curve draws a byte string whose length |
| 5883 | * is determined by the curve, and sets the mandatory bits accordingly. That is: |
| 5884 | * |
| 5885 | * - Curve25519 (PSA_ECC_FAMILY_MONTGOMERY, 255 bits): |
| 5886 | * draw a 32-byte string and process it as specified in |
| 5887 | * Elliptic Curves for Security [RFC7748] §5. |
| 5888 | * |
| 5889 | * - Curve448 (PSA_ECC_FAMILY_MONTGOMERY, 448 bits): |
| 5890 | * draw a 56-byte string and process it as specified in [RFC7748] §5. |
| 5891 | * |
| 5892 | * Note: Function allocates memory for *data buffer, so given *data should be |
| 5893 | * always NULL. |
| 5894 | */ |
| 5895 | |
| 5896 | static psa_status_t psa_generate_derived_ecc_key_montgomery_helper( |
| 5897 | size_t bits, |
| 5898 | psa_key_derivation_operation_t *operation, |
| 5899 | uint8_t **data |
| 5900 | ) |
| 5901 | { |
| 5902 | size_t output_length; |
Przemek Stekiel | a81aed2 | 2022-03-01 15:13:30 +0100 | [diff] [blame] | 5903 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5904 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5905 | switch (bits) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5906 | case 255: |
| 5907 | output_length = 32; |
| 5908 | break; |
| 5909 | case 448: |
| 5910 | output_length = 56; |
| 5911 | break; |
| 5912 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5913 | return PSA_ERROR_INVALID_ARGUMENT; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5914 | break; |
| 5915 | } |
| 5916 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5917 | *data = mbedtls_calloc(1, output_length); |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5918 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5919 | if (*data == NULL) { |
| 5920 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 5921 | } |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5922 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5923 | status = psa_key_derivation_output_bytes(operation, *data, output_length); |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5924 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5925 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5926 | return status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5927 | } |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5928 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5929 | switch (bits) { |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5930 | case 255: |
| 5931 | (*data)[0] &= 248; |
| 5932 | (*data)[31] &= 127; |
| 5933 | (*data)[31] |= 64; |
| 5934 | break; |
| 5935 | case 448: |
| 5936 | (*data)[0] &= 252; |
| 5937 | (*data)[55] |= 128; |
| 5938 | break; |
| 5939 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5940 | return PSA_ERROR_CORRUPTION_DETECTED; |
Przemyslaw Stekiel | aeaa4f0 | 2022-02-21 08:17:43 +0100 | [diff] [blame] | 5941 | break; |
| 5942 | } |
| 5943 | |
| 5944 | return status; |
| 5945 | } |
Valerio Setti | 86587ab | 2023-06-27 13:09:30 +0200 | [diff] [blame] | 5946 | #else /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE */ |
| 5947 | static psa_status_t psa_generate_derived_ecc_key_weierstrass_helper( |
| 5948 | psa_key_slot_t *slot, size_t bits, |
| 5949 | psa_key_derivation_operation_t *operation, uint8_t **data) |
| 5950 | { |
| 5951 | (void) slot; |
| 5952 | (void) bits; |
| 5953 | (void) operation; |
| 5954 | (void) data; |
| 5955 | return PSA_ERROR_NOT_SUPPORTED; |
| 5956 | } |
| 5957 | |
| 5958 | static psa_status_t psa_generate_derived_ecc_key_montgomery_helper( |
| 5959 | size_t bits, psa_key_derivation_operation_t *operation, uint8_t **data) |
| 5960 | { |
| 5961 | (void) bits; |
| 5962 | (void) operation; |
| 5963 | (void) data; |
| 5964 | return PSA_ERROR_NOT_SUPPORTED; |
| 5965 | } |
| 5966 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE */ |
| 5967 | #endif /* PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE */ |
Przemyslaw Stekiel | d8cdcba | 2021-11-15 12:38:53 +0100 | [diff] [blame] | 5968 | |
Adrian L. Shaw | 5a5a79a | 2019-05-03 15:44:28 +0100 | [diff] [blame] | 5969 | static psa_status_t psa_generate_derived_key_internal( |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 5970 | psa_key_slot_t *slot, |
| 5971 | size_t bits, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5972 | psa_key_derivation_operation_t *operation) |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5973 | { |
| 5974 | uint8_t *data = NULL; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5975 | size_t bytes = PSA_BITS_TO_BYTES(bits); |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 5976 | size_t storage_size = bytes; |
Przemek Stekiel | a81aed2 | 2022-03-01 15:13:30 +0100 | [diff] [blame] | 5977 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 5978 | psa_key_attributes_t attributes; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5979 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5980 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(slot->attr.type)) { |
| 5981 | return PSA_ERROR_INVALID_ARGUMENT; |
| 5982 | } |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 5983 | |
Valerio Setti | 8ffdb5d | 2023-06-20 13:14:08 +0200 | [diff] [blame] | 5984 | #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE) || \ |
Valerio Setti | dd24f29 | 2023-06-26 12:21:17 +0200 | [diff] [blame] | 5985 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5986 | if (PSA_KEY_TYPE_IS_ECC(slot->attr.type)) { |
| 5987 | psa_ecc_family_t curve = PSA_KEY_TYPE_ECC_GET_FAMILY(slot->attr.type); |
| 5988 | if (PSA_ECC_FAMILY_IS_WEIERSTRASS(curve)) { |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 5989 | /* Weierstrass elliptic curve */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5990 | status = psa_generate_derived_ecc_key_weierstrass_helper(slot, bits, operation, &data); |
| 5991 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | 6d3d18b | 2022-01-20 22:41:17 +0100 | [diff] [blame] | 5992 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5993 | } |
| 5994 | } else { |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 5995 | /* Montgomery elliptic curve */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5996 | status = psa_generate_derived_ecc_key_montgomery_helper(bits, operation, &data); |
| 5997 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 5998 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 5999 | } |
Przemyslaw Stekiel | 58ce8d8 | 2021-11-25 13:53:28 +0100 | [diff] [blame] | 6000 | } |
Przemyslaw Stekiel | 1dfd122 | 2021-11-18 13:35:00 +0100 | [diff] [blame] | 6001 | } else |
Valerio Setti | 8ffdb5d | 2023-06-20 13:14:08 +0200 | [diff] [blame] | 6002 | #endif /* defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_DERIVE) || |
Valerio Setti | dd24f29 | 2023-06-26 12:21:17 +0200 | [diff] [blame] | 6003 | defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_DERIVE) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6004 | if (key_type_is_raw_bytes(slot->attr.type)) { |
| 6005 | if (bits % 8 != 0) { |
| 6006 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6007 | } |
| 6008 | data = mbedtls_calloc(1, bytes); |
| 6009 | if (data == NULL) { |
| 6010 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6011 | } |
Przemyslaw Stekiel | 1608e33 | 2021-11-09 10:46:40 +0100 | [diff] [blame] | 6012 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6013 | status = psa_key_derivation_output_bytes(operation, data, bytes); |
| 6014 | if (status != PSA_SUCCESS) { |
Przemyslaw Stekiel | 1608e33 | 2021-11-09 10:46:40 +0100 | [diff] [blame] | 6015 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6016 | } |
David Brown | 12ca503 | 2021-02-11 11:02:00 -0700 | [diff] [blame] | 6017 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6018 | if (slot->attr.type == PSA_KEY_TYPE_DES) { |
| 6019 | psa_des_set_key_parity(data, bytes); |
| 6020 | } |
Przemek Stekiel | f110dc0 | 2022-03-01 14:48:05 +0100 | [diff] [blame] | 6021 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6022 | } else { |
| 6023 | return PSA_ERROR_NOT_SUPPORTED; |
Przemyslaw Stekiel | 1608e33 | 2021-11-09 10:46:40 +0100 | [diff] [blame] | 6024 | } |
Ronald Cron | dd04d42 | 2020-11-28 15:14:42 +0100 | [diff] [blame] | 6025 | |
Ronald Cron | bf33c93 | 2020-11-28 18:06:53 +0100 | [diff] [blame] | 6026 | slot->attr.bits = (psa_key_bits_t) bits; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 6027 | attributes = (psa_key_attributes_t) { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6028 | .core = slot->attr |
Ronald Cron | 2ebfdcc | 2020-11-28 15:54:54 +0100 | [diff] [blame] | 6029 | }; |
| 6030 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6031 | if (psa_key_lifetime_is_external(attributes.core.lifetime)) { |
| 6032 | status = psa_driver_wrapper_get_key_buffer_size(&attributes, |
| 6033 | &storage_size); |
| 6034 | if (status != PSA_SUCCESS) { |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6035 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6036 | } |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6037 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6038 | status = psa_allocate_buffer_to_slot(slot, storage_size); |
| 6039 | if (status != PSA_SUCCESS) { |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6040 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6041 | } |
Archana | d8a83dc | 2021-06-14 10:04:16 +0530 | [diff] [blame] | 6042 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6043 | status = psa_driver_wrapper_import_key(&attributes, |
| 6044 | data, bytes, |
| 6045 | slot->key.data, |
| 6046 | slot->key.bytes, |
| 6047 | &slot->key.bytes, &bits); |
| 6048 | if (bits != slot->attr.bits) { |
Ronald Cron | bf33c93 | 2020-11-28 18:06:53 +0100 | [diff] [blame] | 6049 | status = PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6050 | } |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6051 | |
| 6052 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6053 | mbedtls_free(data); |
| 6054 | return status; |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6055 | } |
| 6056 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6057 | psa_status_t psa_key_derivation_output_key(const psa_key_attributes_t *attributes, |
| 6058 | psa_key_derivation_operation_t *operation, |
| 6059 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 6060 | { |
| 6061 | psa_status_t status; |
| 6062 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 6063 | psa_se_drv_table_entry_t *driver = NULL; |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 6064 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 6065 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
| 6066 | |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 6067 | /* Reject any attempt to create a zero-length key so that we don't |
| 6068 | * 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] | 6069 | if (psa_get_key_bits(attributes) == 0) { |
| 6070 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6071 | } |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 6072 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6073 | if (operation->alg == PSA_ALG_NONE) { |
| 6074 | return PSA_ERROR_BAD_STATE; |
| 6075 | } |
Dave Rodgman | d69da6c | 2021-11-16 10:32:48 +0000 | [diff] [blame] | 6076 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6077 | if (!operation->can_output_key) { |
| 6078 | return PSA_ERROR_NOT_PERMITTED; |
| 6079 | } |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 6080 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6081 | status = psa_start_key_creation(PSA_KEY_CREATION_DERIVE, attributes, |
| 6082 | &slot, &driver); |
Gilles Peskine | f4ee662 | 2019-07-24 13:44:30 +0200 | [diff] [blame] | 6083 | #if defined(MBEDTLS_PSA_CRYPTO_SE_C) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6084 | if (driver != NULL) { |
Gilles Peskine | f4ee662 | 2019-07-24 13:44:30 +0200 | [diff] [blame] | 6085 | /* Deriving a key in a secure element is not implemented yet. */ |
| 6086 | status = PSA_ERROR_NOT_SUPPORTED; |
| 6087 | } |
| 6088 | #endif /* MBEDTLS_PSA_CRYPTO_SE_C */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6089 | if (status == PSA_SUCCESS) { |
| 6090 | status = psa_generate_derived_key_internal(slot, |
| 6091 | attributes->core.bits, |
| 6092 | operation); |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 6093 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6094 | if (status == PSA_SUCCESS) { |
| 6095 | status = psa_finish_key_creation(slot, driver, key); |
| 6096 | } |
| 6097 | if (status != PSA_SUCCESS) { |
| 6098 | psa_fail_key_creation(slot, driver); |
| 6099 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 6100 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6101 | return status; |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 6102 | } |
| 6103 | |
Gilles Peskine | eab56e4 | 2018-07-12 17:12:33 +0200 | [diff] [blame] | 6104 | |
| 6105 | |
| 6106 | /****************************************************************/ |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 6107 | /* Key derivation */ |
| 6108 | /****************************************************************/ |
| 6109 | |
Steven Cooreman | 932ffb7 | 2021-02-15 12:14:32 +0100 | [diff] [blame] | 6110 | #if defined(AT_LEAST_ONE_BUILTIN_KDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6111 | static int is_kdf_alg_supported(psa_algorithm_t kdf_alg) |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6112 | { |
| 6113 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6114 | if (PSA_ALG_IS_HKDF(kdf_alg)) { |
| 6115 | return 1; |
| 6116 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6117 | #endif |
Przemek Stekiel | b57a44b | 2022-06-06 08:33:45 +0200 | [diff] [blame] | 6118 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6119 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
| 6120 | return 1; |
| 6121 | } |
Przemek Stekiel | b57a44b | 2022-06-06 08:33:45 +0200 | [diff] [blame] | 6122 | #endif |
| 6123 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6124 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg)) { |
| 6125 | return 1; |
| 6126 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6127 | #endif |
| 6128 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6129 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg)) { |
| 6130 | return 1; |
| 6131 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6132 | #endif |
| 6133 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6134 | if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 6135 | return 1; |
| 6136 | } |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6137 | #endif |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6138 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6139 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 6140 | return 1; |
| 6141 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6142 | #endif |
Kusumit Ghoderao | d132cac | 2023-05-03 12:00:27 +0530 | [diff] [blame] | 6143 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 6144 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 6145 | return 1; |
| 6146 | } |
| 6147 | #endif |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6148 | return 0; |
Gilles Peskine | 9efde4f | 2021-04-29 21:10:00 +0200 | [diff] [blame] | 6149 | } |
| 6150 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6151 | static psa_status_t psa_hash_try_support(psa_algorithm_t alg) |
Gilles Peskine | 0cc417d | 2021-04-29 21:18:14 +0200 | [diff] [blame] | 6152 | { |
| 6153 | psa_hash_operation_t operation = PSA_HASH_OPERATION_INIT; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6154 | psa_status_t status = psa_hash_setup(&operation, alg); |
| 6155 | psa_hash_abort(&operation); |
| 6156 | return status; |
Gilles Peskine | 0cc417d | 2021-04-29 21:18:14 +0200 | [diff] [blame] | 6157 | } |
| 6158 | |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6159 | static psa_status_t psa_key_derivation_setup_kdf( |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6160 | psa_key_derivation_operation_t *operation, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6161 | psa_algorithm_t kdf_alg) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6162 | { |
Janos Follath | 5fe1973 | 2019-06-20 15:09:30 +0100 | [diff] [blame] | 6163 | /* Make sure that operation->ctx is properly zero-initialised. (Macro |
| 6164 | * initialisers for this union leave some bytes unspecified.) */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6165 | memset(&operation->ctx, 0, sizeof(operation->ctx)); |
Janos Follath | 5fe1973 | 2019-06-20 15:09:30 +0100 | [diff] [blame] | 6166 | |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6167 | /* Make sure that kdf_alg is a supported key derivation algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6168 | if (!is_kdf_alg_supported(kdf_alg)) { |
| 6169 | return PSA_ERROR_NOT_SUPPORTED; |
| 6170 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6171 | |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6172 | /* All currently supported key derivation algorithms (apart from |
Andrzej Kurek | 702776f | 2022-09-16 06:22:44 -0400 | [diff] [blame] | 6173 | * ecjpake to pms) are based on a hash algorithm. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6174 | psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg); |
| 6175 | size_t hash_size = PSA_HASH_LENGTH(hash_alg); |
| 6176 | if (kdf_alg != PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 6177 | if (hash_size == 0) { |
| 6178 | return PSA_ERROR_NOT_SUPPORTED; |
| 6179 | } |
Gilles Peskine | 0cc417d | 2021-04-29 21:18:14 +0200 | [diff] [blame] | 6180 | |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6181 | /* Make sure that hash_alg is a supported hash algorithm. Otherwise |
| 6182 | * we might fail later, which is somewhat unfriendly and potentially |
| 6183 | * risk-prone. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6184 | psa_status_t status = psa_hash_try_support(hash_alg); |
| 6185 | if (status != PSA_SUCCESS) { |
| 6186 | return status; |
| 6187 | } |
| 6188 | } else { |
| 6189 | hash_size = PSA_HASH_LENGTH(PSA_ALG_SHA_256); |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6190 | } |
Gilles Peskine | 0cc417d | 2021-04-29 21:18:14 +0200 | [diff] [blame] | 6191 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6192 | if ((PSA_ALG_IS_TLS12_PRF(kdf_alg) || |
| 6193 | PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) && |
| 6194 | !(hash_alg == PSA_ALG_SHA_256 || hash_alg == PSA_ALG_SHA_384)) { |
| 6195 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6196 | } |
Andrzej Kurek | 7763829 | 2022-09-16 12:24:52 -0400 | [diff] [blame] | 6197 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) || \ |
Andrzej Kurek | b510cd2 | 2022-09-26 10:50:22 -0400 | [diff] [blame] | 6198 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6199 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg) || |
| 6200 | (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS)) { |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6201 | operation->capacity = hash_size; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6202 | } else |
Andrzej Kurek | b510cd2 | 2022-09-26 10:50:22 -0400 | [diff] [blame] | 6203 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT || |
| 6204 | MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6205 | operation->capacity = 255 * hash_size; |
| 6206 | return PSA_SUCCESS; |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6207 | } |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6208 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6209 | 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] | 6210 | { |
| 6211 | #if defined(PSA_WANT_ALG_ECDH) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6212 | if (alg == PSA_ALG_ECDH) { |
| 6213 | return PSA_SUCCESS; |
| 6214 | } |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6215 | #endif |
Przemek Stekiel | fb3dd54 | 2022-12-01 14:59:15 +0100 | [diff] [blame] | 6216 | #if defined(PSA_WANT_ALG_FFDH) |
| 6217 | if (alg == PSA_ALG_FFDH) { |
| 6218 | return PSA_SUCCESS; |
| 6219 | } |
| 6220 | #endif |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6221 | (void) alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6222 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 0c3a071 | 2021-04-29 21:34:33 +0200 | [diff] [blame] | 6223 | } |
Gilles Peskine | bb3814c | 2022-12-16 01:12:12 +0100 | [diff] [blame] | 6224 | |
| 6225 | static int psa_key_derivation_allows_free_form_secret_input( |
| 6226 | psa_algorithm_t kdf_alg) |
| 6227 | { |
| 6228 | #if defined(PSA_WANT_ALG_TLS12_ECJPAKE_TO_PMS) |
| 6229 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
| 6230 | return 0; |
| 6231 | } |
| 6232 | #endif |
| 6233 | (void) kdf_alg; |
| 6234 | return 1; |
| 6235 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6236 | #endif /* AT_LEAST_ONE_BUILTIN_KDF */ |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6237 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6238 | psa_status_t psa_key_derivation_setup(psa_key_derivation_operation_t *operation, |
| 6239 | psa_algorithm_t alg) |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6240 | { |
| 6241 | psa_status_t status; |
| 6242 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6243 | if (operation->alg != 0) { |
| 6244 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6245 | } |
Gilles Peskine | 969c5d6 | 2019-01-16 15:53:06 +0100 | [diff] [blame] | 6246 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6247 | if (PSA_ALG_IS_RAW_KEY_AGREEMENT(alg)) { |
| 6248 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6249 | } else if (PSA_ALG_IS_KEY_AGREEMENT(alg)) { |
| 6250 | #if defined(AT_LEAST_ONE_BUILTIN_KDF) |
| 6251 | psa_algorithm_t kdf_alg = PSA_ALG_KEY_AGREEMENT_GET_KDF(alg); |
| 6252 | psa_algorithm_t ka_alg = PSA_ALG_KEY_AGREEMENT_GET_BASE(alg); |
| 6253 | status = psa_key_agreement_try_support(ka_alg); |
| 6254 | if (status != PSA_SUCCESS) { |
| 6255 | return status; |
| 6256 | } |
Gilles Peskine | bb3814c | 2022-12-16 01:12:12 +0100 | [diff] [blame] | 6257 | if (!psa_key_derivation_allows_free_form_secret_input(kdf_alg)) { |
| 6258 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6259 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6260 | status = psa_key_derivation_setup_kdf(operation, kdf_alg); |
| 6261 | #else |
| 6262 | return PSA_ERROR_NOT_SUPPORTED; |
| 6263 | #endif /* AT_LEAST_ONE_BUILTIN_KDF */ |
| 6264 | } else if (PSA_ALG_IS_KEY_DERIVATION(alg)) { |
| 6265 | #if defined(AT_LEAST_ONE_BUILTIN_KDF) |
| 6266 | status = psa_key_derivation_setup_kdf(operation, alg); |
| 6267 | #else |
| 6268 | return PSA_ERROR_NOT_SUPPORTED; |
| 6269 | #endif /* AT_LEAST_ONE_BUILTIN_KDF */ |
| 6270 | } else { |
| 6271 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6272 | } |
| 6273 | |
| 6274 | if (status == PSA_SUCCESS) { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6275 | operation->alg = alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6276 | } |
| 6277 | return status; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6278 | } |
| 6279 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6280 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6281 | static psa_status_t psa_hkdf_input(psa_hkdf_key_derivation_t *hkdf, |
| 6282 | psa_algorithm_t kdf_alg, |
| 6283 | psa_key_derivation_step_t step, |
| 6284 | const uint8_t *data, |
| 6285 | size_t data_length) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6286 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6287 | psa_algorithm_t hash_alg = PSA_ALG_HKDF_GET_HASH(kdf_alg); |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6288 | psa_status_t status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6289 | switch (step) { |
Gilles Peskine | 03410b5 | 2019-05-16 16:05:19 +0200 | [diff] [blame] | 6290 | case PSA_KEY_DERIVATION_INPUT_SALT: |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6291 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6292 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg)) { |
| 6293 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6294 | } |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6295 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6296 | if (hkdf->state != HKDF_STATE_INIT) { |
| 6297 | return PSA_ERROR_BAD_STATE; |
| 6298 | } else { |
| 6299 | status = psa_key_derivation_start_hmac(&hkdf->hmac, |
| 6300 | hash_alg, |
| 6301 | data, data_length); |
| 6302 | if (status != PSA_SUCCESS) { |
| 6303 | return status; |
| 6304 | } |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 6305 | hkdf->state = HKDF_STATE_STARTED; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6306 | return PSA_SUCCESS; |
Steven Cooreman | d1ed1d9 | 2021-04-29 19:11:25 +0200 | [diff] [blame] | 6307 | } |
Gilles Peskine | 03410b5 | 2019-05-16 16:05:19 +0200 | [diff] [blame] | 6308 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6309 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6310 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg)) { |
Przemek Stekiel | 2fb0dcd | 2022-05-19 10:34:37 +0200 | [diff] [blame] | 6311 | /* We shouldn't be in different state as HKDF_EXPAND only allows |
| 6312 | * two inputs: SECRET (this case) and INFO which does not modify |
| 6313 | * the state. It could happen only if the hkdf |
| 6314 | * object was corrupted. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6315 | if (hkdf->state != HKDF_STATE_INIT) { |
| 6316 | return PSA_ERROR_BAD_STATE; |
| 6317 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6318 | |
Przemek Stekiel | 2fb0dcd | 2022-05-19 10:34:37 +0200 | [diff] [blame] | 6319 | /* Allow only input that fits expected prk size */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6320 | if (data_length != PSA_HASH_LENGTH(hash_alg)) { |
| 6321 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6322 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6323 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6324 | memcpy(hkdf->prk, data, data_length); |
| 6325 | } else |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6326 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND */ |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6327 | { |
Przemek Stekiel | 0586f4c | 2022-06-03 16:00:25 +0200 | [diff] [blame] | 6328 | /* HKDF: If no salt was provided, use an empty salt. |
| 6329 | * HKDF-EXTRACT: salt is mandatory. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6330 | if (hkdf->state == HKDF_STATE_INIT) { |
Przemek Stekiel | 0586f4c | 2022-06-03 16:00:25 +0200 | [diff] [blame] | 6331 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6332 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
| 6333 | return PSA_ERROR_BAD_STATE; |
| 6334 | } |
Przemek Stekiel | 0586f4c | 2022-06-03 16:00:25 +0200 | [diff] [blame] | 6335 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6336 | status = psa_key_derivation_start_hmac(&hkdf->hmac, |
| 6337 | hash_alg, |
| 6338 | NULL, 0); |
| 6339 | if (status != PSA_SUCCESS) { |
| 6340 | return status; |
| 6341 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6342 | hkdf->state = HKDF_STATE_STARTED; |
| 6343 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6344 | if (hkdf->state != HKDF_STATE_STARTED) { |
| 6345 | return PSA_ERROR_BAD_STATE; |
| 6346 | } |
| 6347 | status = psa_mac_update(&hkdf->hmac, |
| 6348 | data, data_length); |
| 6349 | if (status != PSA_SUCCESS) { |
| 6350 | return status; |
| 6351 | } |
| 6352 | status = psa_mac_sign_finish(&hkdf->hmac, |
| 6353 | hkdf->prk, |
| 6354 | sizeof(hkdf->prk), |
| 6355 | &data_length); |
| 6356 | if (status != PSA_SUCCESS) { |
| 6357 | return status; |
| 6358 | } |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6359 | } |
Przemek Stekiel | 17520fe | 2022-05-10 13:53:33 +0200 | [diff] [blame] | 6360 | |
Gilles Peskine | 2b522db | 2019-04-12 15:11:49 +0200 | [diff] [blame] | 6361 | hkdf->state = HKDF_STATE_KEYED; |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6362 | hkdf->block_number = 0; |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6363 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6364 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6365 | /* The only block of output is the PRK. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6366 | memcpy(hkdf->output_block, hkdf->prk, PSA_HASH_LENGTH(hash_alg)); |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6367 | hkdf->offset_in_block = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6368 | } else |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6369 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6370 | { |
| 6371 | /* Block 0 is empty, and the next block will be |
| 6372 | * generated by psa_key_derivation_hkdf_read(). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6373 | hkdf->offset_in_block = PSA_HASH_LENGTH(hash_alg); |
Przemek Stekiel | 03d948c | 2022-05-19 11:45:20 +0200 | [diff] [blame] | 6374 | } |
| 6375 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6376 | return PSA_SUCCESS; |
Gilles Peskine | 03410b5 | 2019-05-16 16:05:19 +0200 | [diff] [blame] | 6377 | case PSA_KEY_DERIVATION_INPUT_INFO: |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6378 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6379 | if (PSA_ALG_IS_HKDF_EXTRACT(kdf_alg)) { |
| 6380 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6381 | } |
Przemek Stekiel | 3e8249c | 2022-06-03 14:05:07 +0200 | [diff] [blame] | 6382 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Przemek Stekiel | cde3f78 | 2022-06-03 16:12:27 +0200 | [diff] [blame] | 6383 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXPAND) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6384 | if (PSA_ALG_IS_HKDF_EXPAND(kdf_alg) && |
| 6385 | hkdf->state == HKDF_STATE_INIT) { |
| 6386 | return PSA_ERROR_BAD_STATE; |
| 6387 | } |
Przemek Stekiel | cde3f78 | 2022-06-03 16:12:27 +0200 | [diff] [blame] | 6388 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_HKDF_EXTRACT */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6389 | if (hkdf->state == HKDF_STATE_OUTPUT) { |
| 6390 | return PSA_ERROR_BAD_STATE; |
| 6391 | } |
| 6392 | if (hkdf->info_set) { |
| 6393 | return PSA_ERROR_BAD_STATE; |
| 6394 | } |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6395 | hkdf->info_length = data_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6396 | if (data_length != 0) { |
| 6397 | hkdf->info = mbedtls_calloc(1, data_length); |
| 6398 | if (hkdf->info == NULL) { |
| 6399 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6400 | } |
| 6401 | memcpy(hkdf->info, data, data_length); |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6402 | } |
| 6403 | hkdf->info_set = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6404 | return PSA_SUCCESS; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6405 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6406 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6407 | } |
| 6408 | } |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6409 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 6410 | |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6411 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || \ |
| 6412 | defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6413 | static psa_status_t psa_tls12_prf_set_seed(psa_tls12_prf_key_derivation_t *prf, |
| 6414 | const uint8_t *data, |
| 6415 | size_t data_length) |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6416 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6417 | if (prf->state != PSA_TLS12_PRF_STATE_INIT) { |
| 6418 | return PSA_ERROR_BAD_STATE; |
| 6419 | } |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6420 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6421 | if (data_length != 0) { |
| 6422 | prf->seed = mbedtls_calloc(1, data_length); |
| 6423 | if (prf->seed == NULL) { |
| 6424 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6425 | } |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6426 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6427 | memcpy(prf->seed, data, data_length); |
Janos Follath | d6dce9f | 2019-07-04 09:11:38 +0100 | [diff] [blame] | 6428 | prf->seed_length = data_length; |
| 6429 | } |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6430 | |
Gilles Peskine | 43f958b | 2020-12-13 14:55:14 +0100 | [diff] [blame] | 6431 | prf->state = PSA_TLS12_PRF_STATE_SEED_SET; |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6432 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6433 | return PSA_SUCCESS; |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6434 | } |
| 6435 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6436 | static psa_status_t psa_tls12_prf_set_key(psa_tls12_prf_key_derivation_t *prf, |
| 6437 | const uint8_t *data, |
| 6438 | size_t data_length) |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6439 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6440 | if (prf->state != PSA_TLS12_PRF_STATE_SEED_SET && |
| 6441 | prf->state != PSA_TLS12_PRF_STATE_OTHER_KEY_SET) { |
| 6442 | return PSA_ERROR_BAD_STATE; |
| 6443 | } |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6444 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6445 | if (data_length != 0) { |
| 6446 | prf->secret = mbedtls_calloc(1, data_length); |
| 6447 | if (prf->secret == NULL) { |
| 6448 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6449 | } |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 6450 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6451 | memcpy(prf->secret, data, data_length); |
Steven Cooreman | a6df604 | 2021-04-29 19:32:25 +0200 | [diff] [blame] | 6452 | prf->secret_length = data_length; |
| 6453 | } |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6454 | |
Gilles Peskine | 43f958b | 2020-12-13 14:55:14 +0100 | [diff] [blame] | 6455 | prf->state = PSA_TLS12_PRF_STATE_KEY_SET; |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6456 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6457 | return PSA_SUCCESS; |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6458 | } |
| 6459 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6460 | static psa_status_t psa_tls12_prf_set_label(psa_tls12_prf_key_derivation_t *prf, |
| 6461 | const uint8_t *data, |
| 6462 | size_t data_length) |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6463 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6464 | if (prf->state != PSA_TLS12_PRF_STATE_KEY_SET) { |
| 6465 | return PSA_ERROR_BAD_STATE; |
| 6466 | } |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6467 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6468 | if (data_length != 0) { |
| 6469 | prf->label = mbedtls_calloc(1, data_length); |
| 6470 | if (prf->label == NULL) { |
| 6471 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6472 | } |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6473 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6474 | memcpy(prf->label, data, data_length); |
Janos Follath | d6dce9f | 2019-07-04 09:11:38 +0100 | [diff] [blame] | 6475 | prf->label_length = data_length; |
| 6476 | } |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6477 | |
Gilles Peskine | 43f958b | 2020-12-13 14:55:14 +0100 | [diff] [blame] | 6478 | prf->state = PSA_TLS12_PRF_STATE_LABEL_SET; |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6479 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6480 | return PSA_SUCCESS; |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6481 | } |
| 6482 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6483 | static psa_status_t psa_tls12_prf_input(psa_tls12_prf_key_derivation_t *prf, |
| 6484 | psa_key_derivation_step_t step, |
| 6485 | const uint8_t *data, |
| 6486 | size_t data_length) |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 6487 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6488 | switch (step) { |
Janos Follath | f08e265 | 2019-06-13 09:05:41 +0100 | [diff] [blame] | 6489 | case PSA_KEY_DERIVATION_INPUT_SEED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6490 | return psa_tls12_prf_set_seed(prf, data, data_length); |
Janos Follath | 8155054 | 2019-06-13 14:26:34 +0100 | [diff] [blame] | 6491 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6492 | return psa_tls12_prf_set_key(prf, data, data_length); |
Janos Follath | 63028dd | 2019-06-13 09:15:47 +0100 | [diff] [blame] | 6493 | case PSA_KEY_DERIVATION_INPUT_LABEL: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6494 | return psa_tls12_prf_set_label(prf, data, data_length); |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 6495 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6496 | return PSA_ERROR_INVALID_ARGUMENT; |
Janos Follath | b03233e | 2019-06-11 15:30:30 +0100 | [diff] [blame] | 6497 | } |
| 6498 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6499 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) || |
| 6500 | * MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
| 6501 | |
| 6502 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
| 6503 | static psa_status_t psa_tls12_prf_psk_to_ms_set_key( |
| 6504 | psa_tls12_prf_key_derivation_t *prf, |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6505 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6506 | size_t data_length) |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6507 | { |
| 6508 | psa_status_t status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6509 | const size_t pms_len = (prf->state == PSA_TLS12_PRF_STATE_OTHER_KEY_SET ? |
| 6510 | 4 + data_length + prf->other_secret_length : |
| 6511 | 4 + 2 * data_length); |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6512 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6513 | if (data_length > PSA_TLS12_PSK_TO_MS_PSK_MAX_SIZE) { |
| 6514 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6515 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6516 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6517 | uint8_t *pms = mbedtls_calloc(1, pms_len); |
| 6518 | if (pms == NULL) { |
| 6519 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6520 | } |
Przemek Stekiel | c8fa5a1 | 2022-04-07 14:17:13 +0200 | [diff] [blame] | 6521 | uint8_t *cur = pms; |
| 6522 | |
| 6523 | /* pure-PSK: |
| 6524 | * Quoting RFC 4279, Section 2: |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6525 | * |
| 6526 | * The premaster secret is formed as follows: if the PSK is N octets |
| 6527 | * long, concatenate a uint16 with the value N, N zero octets, a second |
| 6528 | * uint16 with the value N, and the PSK itself. |
Przemek Stekiel | c8fa5a1 | 2022-04-07 14:17:13 +0200 | [diff] [blame] | 6529 | * |
| 6530 | * mixed-PSK: |
| 6531 | * In a DHE-PSK, RSA-PSK, ECDHE-PSK the premaster secret is formed as |
| 6532 | * follows: concatenate a uint16 with the length of the other secret, |
| 6533 | * the other secret itself, uint16 with the length of PSK, and the |
| 6534 | * PSK itself. |
| 6535 | * For details please check: |
| 6536 | * - RFC 4279, Section 4 for the definition of RSA-PSK, |
| 6537 | * - RFC 4279, Section 3 for the definition of DHE-PSK, |
| 6538 | * - RFC 5489 for the definition of ECDHE-PSK. |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6539 | */ |
| 6540 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6541 | if (prf->state == PSA_TLS12_PRF_STATE_OTHER_KEY_SET) { |
| 6542 | *cur++ = MBEDTLS_BYTE_1(prf->other_secret_length); |
| 6543 | *cur++ = MBEDTLS_BYTE_0(prf->other_secret_length); |
| 6544 | if (prf->other_secret_length != 0) { |
| 6545 | memcpy(cur, prf->other_secret, prf->other_secret_length); |
| 6546 | mbedtls_platform_zeroize(prf->other_secret, prf->other_secret_length); |
Przemek Stekiel | 2503f7e | 2022-04-12 12:08:01 +0200 | [diff] [blame] | 6547 | cur += prf->other_secret_length; |
| 6548 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6549 | } else { |
| 6550 | *cur++ = MBEDTLS_BYTE_1(data_length); |
| 6551 | *cur++ = MBEDTLS_BYTE_0(data_length); |
| 6552 | memset(cur, 0, data_length); |
Przemek Stekiel | c8fa5a1 | 2022-04-07 14:17:13 +0200 | [diff] [blame] | 6553 | cur += data_length; |
| 6554 | } |
| 6555 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6556 | *cur++ = MBEDTLS_BYTE_1(data_length); |
| 6557 | *cur++ = MBEDTLS_BYTE_0(data_length); |
| 6558 | memcpy(cur, data, data_length); |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6559 | cur += data_length; |
| 6560 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6561 | status = psa_tls12_prf_set_key(prf, pms, cur - pms); |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6562 | |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 6563 | mbedtls_zeroize_and_free(pms, pms_len); |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6564 | return status; |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6565 | } |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 6566 | |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6567 | static psa_status_t psa_tls12_prf_psk_to_ms_set_other_key( |
| 6568 | psa_tls12_prf_key_derivation_t *prf, |
| 6569 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6570 | size_t data_length) |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6571 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6572 | if (prf->state != PSA_TLS12_PRF_STATE_SEED_SET) { |
| 6573 | return PSA_ERROR_BAD_STATE; |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6574 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6575 | |
| 6576 | if (data_length != 0) { |
| 6577 | prf->other_secret = mbedtls_calloc(1, data_length); |
| 6578 | if (prf->other_secret == NULL) { |
| 6579 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6580 | } |
| 6581 | |
| 6582 | memcpy(prf->other_secret, data, data_length); |
| 6583 | prf->other_secret_length = data_length; |
| 6584 | } else { |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6585 | prf->other_secret_length = 0; |
| 6586 | } |
| 6587 | |
| 6588 | prf->state = PSA_TLS12_PRF_STATE_OTHER_KEY_SET; |
| 6589 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6590 | return PSA_SUCCESS; |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6591 | } |
| 6592 | |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 6593 | static psa_status_t psa_tls12_prf_psk_to_ms_input( |
| 6594 | psa_tls12_prf_key_derivation_t *prf, |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 6595 | psa_key_derivation_step_t step, |
| 6596 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6597 | size_t data_length) |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 6598 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6599 | switch (step) { |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6600 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6601 | return psa_tls12_prf_psk_to_ms_set_key(prf, |
| 6602 | data, data_length); |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6603 | break; |
| 6604 | case PSA_KEY_DERIVATION_INPUT_OTHER_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6605 | return psa_tls12_prf_psk_to_ms_set_other_key(prf, |
| 6606 | data, |
| 6607 | data_length); |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6608 | break; |
| 6609 | default: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6610 | return psa_tls12_prf_input(prf, step, data, data_length); |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6611 | break; |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 6612 | |
Przemek Stekiel | e47201b | 2022-04-19 13:53:28 +0200 | [diff] [blame] | 6613 | } |
Janos Follath | 6660f0e | 2019-06-17 08:44:03 +0100 | [diff] [blame] | 6614 | } |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6615 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6616 | |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6617 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
| 6618 | static psa_status_t psa_tls12_ecjpake_to_pms_input( |
| 6619 | psa_tls12_ecjpake_to_pms_t *ecjpake, |
Andrzej Kurek | 702776f | 2022-09-16 06:22:44 -0400 | [diff] [blame] | 6620 | psa_key_derivation_step_t step, |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6621 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6622 | size_t data_length) |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6623 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6624 | if (data_length != PSA_TLS12_ECJPAKE_TO_PMS_INPUT_SIZE || |
| 6625 | step != PSA_KEY_DERIVATION_INPUT_SECRET) { |
| 6626 | return PSA_ERROR_INVALID_ARGUMENT; |
Andrzej Kurek | 5603efd | 2022-09-26 10:49:16 -0400 | [diff] [blame] | 6627 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6628 | |
| 6629 | /* Check if the passed point is in an uncompressed form */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6630 | if (data[0] != 0x04) { |
| 6631 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6632 | } |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6633 | |
| 6634 | /* Only K.X has to be extracted - bytes 1 to 32 inclusive. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6635 | memcpy(ecjpake->data, data + 1, PSA_TLS12_ECJPAKE_TO_PMS_DATA_SIZE); |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6636 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6637 | return PSA_SUCCESS; |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6638 | } |
| 6639 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */ |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 6640 | |
| 6641 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 6642 | static psa_status_t psa_pbkdf2_set_input_cost( |
| 6643 | psa_pbkdf2_key_derivation_t *pbkdf2, |
| 6644 | psa_key_derivation_step_t step, |
| 6645 | uint64_t data) |
| 6646 | { |
| 6647 | if (step != PSA_KEY_DERIVATION_INPUT_COST) { |
| 6648 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6649 | } |
| 6650 | |
| 6651 | if (pbkdf2->state != PSA_PBKDF2_STATE_INIT) { |
| 6652 | return PSA_ERROR_BAD_STATE; |
| 6653 | } |
Kusumit Ghoderao | 3fc4ca7 | 2023-05-08 15:57:41 +0530 | [diff] [blame] | 6654 | |
Kusumit Ghoderao | e66a8ad | 2023-05-24 12:30:43 +0530 | [diff] [blame] | 6655 | if (data > PSA_VENDOR_PBKDF2_MAX_ITERATIONS) { |
Kusumit Ghoderao | 3fc4ca7 | 2023-05-08 15:57:41 +0530 | [diff] [blame] | 6656 | return PSA_ERROR_NOT_SUPPORTED; |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 6657 | } |
Kusumit Ghoderao | 3fc4ca7 | 2023-05-08 15:57:41 +0530 | [diff] [blame] | 6658 | |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 6659 | if (data == 0) { |
| 6660 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6661 | } |
Kusumit Ghoderao | e66a8ad | 2023-05-24 12:30:43 +0530 | [diff] [blame] | 6662 | |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 6663 | pbkdf2->input_cost = data; |
| 6664 | pbkdf2->state = PSA_PBKDF2_STATE_INPUT_COST_SET; |
| 6665 | |
| 6666 | return PSA_SUCCESS; |
| 6667 | } |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 6668 | |
| 6669 | static psa_status_t psa_pbkdf2_set_salt(psa_pbkdf2_key_derivation_t *pbkdf2, |
| 6670 | const uint8_t *data, |
| 6671 | size_t data_length) |
| 6672 | { |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 6673 | if (pbkdf2->state != PSA_PBKDF2_STATE_INPUT_COST_SET && |
| 6674 | pbkdf2->state != PSA_PBKDF2_STATE_SALT_SET) { |
| 6675 | return PSA_ERROR_BAD_STATE; |
| 6676 | } |
| 6677 | |
Kusumit Ghoderao | d0422f3 | 2023-05-08 15:56:19 +0530 | [diff] [blame] | 6678 | if (pbkdf2->state == PSA_PBKDF2_STATE_INPUT_COST_SET) { |
| 6679 | pbkdf2->salt = mbedtls_calloc(1, data_length); |
| 6680 | if (pbkdf2->salt == NULL) { |
| 6681 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 6682 | } |
Kusumit Ghoderao | d0422f3 | 2023-05-08 15:56:19 +0530 | [diff] [blame] | 6683 | |
| 6684 | memcpy(pbkdf2->salt, data, data_length); |
| 6685 | pbkdf2->salt_length = data_length; |
| 6686 | } else if (pbkdf2->state == PSA_PBKDF2_STATE_SALT_SET) { |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 6687 | uint8_t *next_salt; |
Kusumit Ghoderao | b538bb7 | 2023-05-24 12:32:14 +0530 | [diff] [blame] | 6688 | |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 6689 | next_salt = mbedtls_calloc(1, data_length + pbkdf2->salt_length); |
| 6690 | if (next_salt == NULL) { |
Kusumit Ghoderao | d0422f3 | 2023-05-08 15:56:19 +0530 | [diff] [blame] | 6691 | return PSA_ERROR_INSUFFICIENT_MEMORY; |
| 6692 | } |
| 6693 | |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 6694 | memcpy(next_salt, pbkdf2->salt, pbkdf2->salt_length); |
| 6695 | memcpy(next_salt + pbkdf2->salt_length, data, data_length); |
Kusumit Ghoderao | d0422f3 | 2023-05-08 15:56:19 +0530 | [diff] [blame] | 6696 | pbkdf2->salt_length += data_length; |
Kusumit Ghoderao | d7a3f80 | 2023-05-24 22:19:47 +0530 | [diff] [blame] | 6697 | mbedtls_free(pbkdf2->salt); |
| 6698 | pbkdf2->salt = next_salt; |
Kusumit Ghoderao | 547a6c6 | 2023-05-03 12:18:19 +0530 | [diff] [blame] | 6699 | } |
| 6700 | |
| 6701 | pbkdf2->state = PSA_PBKDF2_STATE_SALT_SET; |
| 6702 | |
| 6703 | return PSA_SUCCESS; |
| 6704 | } |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6705 | |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6706 | 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] | 6707 | const uint8_t *input, |
| 6708 | size_t input_len, |
| 6709 | uint8_t *output, |
Kusumit Ghoderao | 91f99f5 | 2023-05-24 22:21:48 +0530 | [diff] [blame] | 6710 | size_t *output_len) |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6711 | { |
| 6712 | psa_status_t status = PSA_SUCCESS; |
| 6713 | if (input_len > PSA_HASH_BLOCK_LENGTH(hash_alg)) { |
| 6714 | status = psa_hash_compute(hash_alg, input, input_len, output, |
Kusumit Ghoderao | 91f99f5 | 2023-05-24 22:21:48 +0530 | [diff] [blame] | 6715 | PSA_HMAC_MAX_HASH_BLOCK_SIZE, output_len); |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6716 | } else { |
| 6717 | memcpy(output, input, input_len); |
Kusumit Ghoderao | 91f99f5 | 2023-05-24 22:21:48 +0530 | [diff] [blame] | 6718 | *output_len = PSA_HASH_BLOCK_LENGTH(hash_alg); |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6719 | } |
| 6720 | return status; |
| 6721 | } |
| 6722 | |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6723 | 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] | 6724 | psa_algorithm_t kdf_alg, |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6725 | const uint8_t *data, |
| 6726 | size_t data_length) |
| 6727 | { |
Kusumit Ghoderao | aac9a58 | 2023-05-24 14:19:17 +0530 | [diff] [blame] | 6728 | psa_status_t status = PSA_SUCCESS; |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6729 | if (pbkdf2->state != PSA_PBKDF2_STATE_SALT_SET) { |
| 6730 | return PSA_ERROR_BAD_STATE; |
| 6731 | } |
| 6732 | |
| 6733 | if (data_length != 0) { |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6734 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 6735 | psa_algorithm_t hash_alg = PSA_ALG_PBKDF2_HMAC_GET_HASH(kdf_alg); |
| 6736 | status = psa_pbkdf2_hmac_set_password(hash_alg, data, data_length, |
| 6737 | pbkdf2->password, |
Kusumit Ghoderao | 91f99f5 | 2023-05-24 22:21:48 +0530 | [diff] [blame] | 6738 | &pbkdf2->password_length); |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6739 | } |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6740 | } |
| 6741 | |
| 6742 | pbkdf2->state = PSA_PBKDF2_STATE_PASSWORD_SET; |
| 6743 | |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6744 | return status; |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6745 | } |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 6746 | |
| 6747 | 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] | 6748 | psa_algorithm_t kdf_alg, |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 6749 | psa_key_derivation_step_t step, |
| 6750 | const uint8_t *data, |
| 6751 | size_t data_length) |
| 6752 | { |
| 6753 | switch (step) { |
| 6754 | case PSA_KEY_DERIVATION_INPUT_SALT: |
| 6755 | return psa_pbkdf2_set_salt(pbkdf2, data, data_length); |
| 6756 | case PSA_KEY_DERIVATION_INPUT_PASSWORD: |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6757 | return psa_pbkdf2_set_password(pbkdf2, kdf_alg, data, data_length); |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 6758 | default: |
| 6759 | return PSA_ERROR_INVALID_ARGUMENT; |
| 6760 | } |
| 6761 | } |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 6762 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */ |
| 6763 | |
Gilles Peskine | b896519 | 2019-09-24 16:21:10 +0200 | [diff] [blame] | 6764 | /** Check whether the given key type is acceptable for the given |
| 6765 | * input step of a key derivation. |
| 6766 | * |
| 6767 | * Secret inputs must have the type #PSA_KEY_TYPE_DERIVE. |
| 6768 | * Non-secret inputs must have the type #PSA_KEY_TYPE_RAW_DATA. |
| 6769 | * Both secret and non-secret inputs can alternatively have the type |
| 6770 | * #PSA_KEY_TYPE_NONE, which is never the type of a key object, meaning |
| 6771 | * that the input was passed as a buffer rather than via a key object. |
| 6772 | */ |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6773 | static int psa_key_derivation_check_input_type( |
| 6774 | psa_key_derivation_step_t step, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6775 | psa_key_type_t key_type) |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6776 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6777 | switch (step) { |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6778 | case PSA_KEY_DERIVATION_INPUT_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6779 | if (key_type == PSA_KEY_TYPE_DERIVE) { |
| 6780 | return PSA_SUCCESS; |
| 6781 | } |
| 6782 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 6783 | return PSA_SUCCESS; |
| 6784 | } |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6785 | break; |
Przemek Stekiel | a7695a2 | 2022-04-07 15:39:01 +0200 | [diff] [blame] | 6786 | case PSA_KEY_DERIVATION_INPUT_OTHER_SECRET: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6787 | if (key_type == PSA_KEY_TYPE_DERIVE) { |
| 6788 | return PSA_SUCCESS; |
| 6789 | } |
| 6790 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 6791 | return PSA_SUCCESS; |
| 6792 | } |
Przemek Stekiel | a7695a2 | 2022-04-07 15:39:01 +0200 | [diff] [blame] | 6793 | break; |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6794 | case PSA_KEY_DERIVATION_INPUT_LABEL: |
| 6795 | case PSA_KEY_DERIVATION_INPUT_SALT: |
| 6796 | case PSA_KEY_DERIVATION_INPUT_INFO: |
| 6797 | case PSA_KEY_DERIVATION_INPUT_SEED: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6798 | if (key_type == PSA_KEY_TYPE_RAW_DATA) { |
| 6799 | return PSA_SUCCESS; |
| 6800 | } |
| 6801 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 6802 | return PSA_SUCCESS; |
| 6803 | } |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6804 | break; |
Kusumit Ghoderao | f4fe3ee | 2023-05-03 12:21:07 +0530 | [diff] [blame] | 6805 | case PSA_KEY_DERIVATION_INPUT_PASSWORD: |
| 6806 | if (key_type == PSA_KEY_TYPE_PASSWORD) { |
| 6807 | return PSA_SUCCESS; |
| 6808 | } |
| 6809 | if (key_type == PSA_KEY_TYPE_DERIVE) { |
| 6810 | return PSA_SUCCESS; |
| 6811 | } |
| 6812 | if (key_type == PSA_KEY_TYPE_NONE) { |
| 6813 | return PSA_SUCCESS; |
| 6814 | } |
| 6815 | break; |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6816 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6817 | return PSA_ERROR_INVALID_ARGUMENT; |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6818 | } |
| 6819 | |
Janos Follath | b80a94e | 2019-06-12 15:54:46 +0100 | [diff] [blame] | 6820 | static psa_status_t psa_key_derivation_input_internal( |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6821 | psa_key_derivation_operation_t *operation, |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 6822 | psa_key_derivation_step_t step, |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6823 | psa_key_type_t key_type, |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 6824 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6825 | size_t data_length) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6826 | { |
Gilles Peskine | 46d7faf | 2019-09-23 19:22:55 +0200 | [diff] [blame] | 6827 | psa_status_t status; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6828 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
Gilles Peskine | 46d7faf | 2019-09-23 19:22:55 +0200 | [diff] [blame] | 6829 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6830 | status = psa_key_derivation_check_input_type(step, key_type); |
| 6831 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6832 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6833 | } |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6834 | |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6835 | #if defined(BUILTIN_ALG_ANY_HKDF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6836 | if (PSA_ALG_IS_ANY_HKDF(kdf_alg)) { |
| 6837 | status = psa_hkdf_input(&operation->ctx.hkdf, kdf_alg, |
| 6838 | step, data, data_length); |
| 6839 | } else |
Przemek Stekiel | 69c4679 | 2022-06-10 12:59:51 +0200 | [diff] [blame] | 6840 | #endif /* BUILTIN_ALG_ANY_HKDF */ |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6841 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6842 | if (PSA_ALG_IS_TLS12_PRF(kdf_alg)) { |
| 6843 | status = psa_tls12_prf_input(&operation->ctx.tls12_prf, |
| 6844 | step, data, data_length); |
| 6845 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6846 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PRF */ |
| 6847 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6848 | if (PSA_ALG_IS_TLS12_PSK_TO_MS(kdf_alg)) { |
| 6849 | status = psa_tls12_prf_psk_to_ms_input(&operation->ctx.tls12_prf, |
| 6850 | step, data, data_length); |
| 6851 | } else |
John Durkop | 07cc04a | 2020-11-16 22:08:34 -0800 | [diff] [blame] | 6852 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_PSK_TO_MS */ |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6853 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6854 | if (kdf_alg == PSA_ALG_TLS12_ECJPAKE_TO_PMS) { |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6855 | status = psa_tls12_ecjpake_to_pms_input( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6856 | &operation->ctx.tls12_ecjpake_to_pms, step, data, data_length); |
| 6857 | } else |
Andrzej Kurek | 08d34b8 | 2022-07-29 10:00:16 -0400 | [diff] [blame] | 6858 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_TLS12_ECJPAKE_TO_PMS */ |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 6859 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 6860 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
Kusumit Ghoderao | bd6cefb | 2023-05-24 12:36:34 +0530 | [diff] [blame] | 6861 | status = psa_pbkdf2_input(&operation->ctx.pbkdf2, kdf_alg, |
| 6862 | step, data, data_length); |
Kusumit Ghoderao | 24b3895 | 2023-05-03 12:25:26 +0530 | [diff] [blame] | 6863 | } else |
| 6864 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */ |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6865 | { |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 6866 | /* This can't happen unless the operation object was not initialized */ |
Steven Cooreman | 74afe47 | 2021-02-10 17:19:22 +0100 | [diff] [blame] | 6867 | (void) data; |
| 6868 | (void) data_length; |
| 6869 | (void) kdf_alg; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6870 | return PSA_ERROR_BAD_STATE; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6871 | } |
| 6872 | |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 6873 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6874 | if (status != PSA_SUCCESS) { |
| 6875 | psa_key_derivation_abort(operation); |
| 6876 | } |
| 6877 | return status; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6878 | } |
| 6879 | |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 6880 | static psa_status_t psa_key_derivation_input_integer_internal( |
| 6881 | psa_key_derivation_operation_t *operation, |
| 6882 | psa_key_derivation_step_t step, |
| 6883 | uint64_t value) |
| 6884 | { |
| 6885 | psa_status_t status; |
| 6886 | psa_algorithm_t kdf_alg = psa_key_derivation_get_kdf_alg(operation); |
| 6887 | |
Kusumit Ghoderao | 944bba1 | 2023-05-03 12:14:03 +0530 | [diff] [blame] | 6888 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC) |
| 6889 | if (PSA_ALG_IS_PBKDF2_HMAC(kdf_alg)) { |
| 6890 | status = psa_pbkdf2_set_input_cost( |
| 6891 | &operation->ctx.pbkdf2, step, value); |
| 6892 | } else |
| 6893 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_PBKDF2_HMAC */ |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 6894 | { |
Kusumit Ghoderao | 3a18dee | 2023-04-07 16:16:27 +0530 | [diff] [blame] | 6895 | (void) step; |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 6896 | (void) value; |
| 6897 | (void) kdf_alg; |
Kusumit Ghoderao | a14ae5a | 2023-04-19 14:16:26 +0530 | [diff] [blame] | 6898 | status = PSA_ERROR_INVALID_ARGUMENT; |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 6899 | } |
| 6900 | |
| 6901 | if (status != PSA_SUCCESS) { |
| 6902 | psa_key_derivation_abort(operation); |
| 6903 | } |
| 6904 | return status; |
| 6905 | } |
| 6906 | |
Janos Follath | 51f4a0f | 2019-06-14 11:35:55 +0100 | [diff] [blame] | 6907 | psa_status_t psa_key_derivation_input_bytes( |
| 6908 | psa_key_derivation_operation_t *operation, |
| 6909 | psa_key_derivation_step_t step, |
| 6910 | const uint8_t *data, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6911 | size_t data_length) |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 6912 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6913 | return psa_key_derivation_input_internal(operation, step, |
| 6914 | PSA_KEY_TYPE_NONE, |
| 6915 | data, data_length); |
Gilles Peskine | 6cdfdb7 | 2019-01-08 10:31:27 +0100 | [diff] [blame] | 6916 | } |
| 6917 | |
Kusumit Ghoderao | 50e0e11 | 2023-04-06 17:47:25 +0530 | [diff] [blame] | 6918 | psa_status_t psa_key_derivation_input_integer( |
| 6919 | psa_key_derivation_operation_t *operation, |
| 6920 | psa_key_derivation_step_t step, |
| 6921 | uint64_t value) |
| 6922 | { |
| 6923 | return psa_key_derivation_input_integer_internal(operation, step, value); |
| 6924 | } |
| 6925 | |
Janos Follath | 51f4a0f | 2019-06-14 11:35:55 +0100 | [diff] [blame] | 6926 | psa_status_t psa_key_derivation_input_key( |
| 6927 | psa_key_derivation_operation_t *operation, |
| 6928 | psa_key_derivation_step_t step, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6929 | mbedtls_svc_key_id_t key) |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6930 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 6931 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 6932 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6933 | psa_key_slot_t *slot; |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 6934 | |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 6935 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6936 | key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg); |
| 6937 | if (status != PSA_SUCCESS) { |
| 6938 | psa_key_derivation_abort(operation); |
| 6939 | return status; |
Gilles Peskine | 593773d | 2019-09-23 18:17:40 +0200 | [diff] [blame] | 6940 | } |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 6941 | |
Kusumit Ghoderao | 3128c5d | 2023-05-03 12:27:57 +0530 | [diff] [blame] | 6942 | /* Passing a key object as a SECRET or PASSWORD input unlocks the |
| 6943 | * permission to output to a key object. */ |
| 6944 | if (step == PSA_KEY_DERIVATION_INPUT_SECRET || |
| 6945 | step == PSA_KEY_DERIVATION_INPUT_PASSWORD) { |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 6946 | operation->can_output_key = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6947 | } |
Gilles Peskine | 178c9aa | 2019-09-24 18:21:06 +0200 | [diff] [blame] | 6948 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6949 | status = psa_key_derivation_input_internal(operation, |
| 6950 | step, slot->attr.type, |
| 6951 | slot->key.data, |
| 6952 | slot->key.bytes); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 6953 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6954 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 6955 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6956 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | b70a0fd | 2019-01-07 22:59:38 +0100 | [diff] [blame] | 6957 | } |
Gilles Peskine | ea0fb49 | 2018-07-12 17:17:20 +0200 | [diff] [blame] | 6958 | |
| 6959 | |
| 6960 | |
| 6961 | /****************************************************************/ |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 6962 | /* Key agreement */ |
| 6963 | /****************************************************************/ |
| 6964 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6965 | psa_status_t psa_key_agreement_raw_builtin(const psa_key_attributes_t *attributes, |
| 6966 | const uint8_t *key_buffer, |
| 6967 | size_t key_buffer_size, |
| 6968 | psa_algorithm_t alg, |
| 6969 | const uint8_t *peer_key, |
| 6970 | size_t peer_key_length, |
| 6971 | uint8_t *shared_secret, |
| 6972 | size_t shared_secret_size, |
| 6973 | size_t *shared_secret_length) |
Gilles Peskine | b7ecdf0 | 2018-09-18 12:11:27 +0200 | [diff] [blame] | 6974 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6975 | switch (alg) { |
John Durkop | 6ba40d1 | 2020-11-10 08:50:04 -0800 | [diff] [blame] | 6976 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_ECDH) |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 6977 | case PSA_ALG_ECDH: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 6978 | return mbedtls_psa_key_agreement_ecdh(attributes, key_buffer, |
| 6979 | key_buffer_size, alg, |
| 6980 | peer_key, peer_key_length, |
| 6981 | shared_secret, |
| 6982 | shared_secret_size, |
| 6983 | shared_secret_length); |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 6984 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_ECDH */ |
Przemek Stekiel | fb3dd54 | 2022-12-01 14:59:15 +0100 | [diff] [blame] | 6985 | |
| 6986 | #if defined(MBEDTLS_PSA_BUILTIN_ALG_FFDH) |
| 6987 | case PSA_ALG_FFDH: |
Przemek Stekiel | 152bb46 | 2023-06-01 11:52:39 +0200 | [diff] [blame] | 6988 | return mbedtls_psa_ffdh_key_agreement(attributes, |
Przemek Stekiel | 359f462 | 2022-12-05 14:11:55 +0100 | [diff] [blame] | 6989 | peer_key, |
| 6990 | peer_key_length, |
| 6991 | key_buffer, |
| 6992 | key_buffer_size, |
| 6993 | shared_secret, |
| 6994 | shared_secret_size, |
| 6995 | shared_secret_length); |
Przemek Stekiel | fb3dd54 | 2022-12-01 14:59:15 +0100 | [diff] [blame] | 6996 | #endif /* MBEDTLS_PSA_BUILTIN_ALG_FFDH */ |
| 6997 | |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 6998 | default: |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 6999 | (void) attributes; |
| 7000 | (void) key_buffer; |
| 7001 | (void) key_buffer_size; |
Gilles Peskine | 93f8500 | 2018-11-16 16:43:31 +0100 | [diff] [blame] | 7002 | (void) peer_key; |
| 7003 | (void) peer_key_length; |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7004 | (void) shared_secret; |
| 7005 | (void) shared_secret_size; |
| 7006 | (void) shared_secret_length; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7007 | return PSA_ERROR_NOT_SUPPORTED; |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7008 | } |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7009 | } |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7010 | |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7011 | /** Internal function for raw key agreement |
| 7012 | * Calls the driver wrapper which will hand off key agreement task |
Aditya Deshpande | 40c05cc | 2022-10-14 16:41:40 +0100 | [diff] [blame] | 7013 | * to the driver's implementation if a driver is present. |
| 7014 | * Fallback specified in the driver wrapper is built-in raw key agreement |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7015 | * (psa_key_agreement_raw_builtin). |
| 7016 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7017 | static psa_status_t psa_key_agreement_raw_internal(psa_algorithm_t alg, |
| 7018 | psa_key_slot_t *private_key, |
| 7019 | const uint8_t *peer_key, |
| 7020 | size_t peer_key_length, |
| 7021 | uint8_t *shared_secret, |
| 7022 | size_t shared_secret_size, |
| 7023 | size_t *shared_secret_length) |
Gilles Peskine | 51ae0e4 | 2019-05-16 17:31:03 +0200 | [diff] [blame] | 7024 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7025 | if (!PSA_ALG_IS_RAW_KEY_AGREEMENT(alg)) { |
| 7026 | return PSA_ERROR_NOT_SUPPORTED; |
| 7027 | } |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7028 | |
| 7029 | psa_key_attributes_t attributes = { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7030 | .core = private_key->attr |
Aditya Deshpande | 17845b8 | 2022-10-13 17:21:01 +0100 | [diff] [blame] | 7031 | }; |
| 7032 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7033 | return psa_driver_wrapper_key_agreement(&attributes, |
| 7034 | private_key->key.data, |
| 7035 | private_key->key.bytes, alg, |
| 7036 | peer_key, peer_key_length, |
| 7037 | shared_secret, |
| 7038 | shared_secret_size, |
| 7039 | shared_secret_length); |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7040 | } |
| 7041 | |
Gilles Peskine | a99d3fb | 2019-05-16 15:28:51 +0200 | [diff] [blame] | 7042 | /* 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] | 7043 | * to potentially free embedded data structures and wipe confidential data. |
| 7044 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7045 | static psa_status_t psa_key_agreement_internal(psa_key_derivation_operation_t *operation, |
| 7046 | psa_key_derivation_step_t step, |
| 7047 | psa_key_slot_t *private_key, |
| 7048 | const uint8_t *peer_key, |
| 7049 | size_t peer_key_length) |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7050 | { |
| 7051 | psa_status_t status; |
Aditya Deshpande | 2f7fd76 | 2022-11-22 11:10:34 +0000 | [diff] [blame] | 7052 | uint8_t shared_secret[PSA_RAW_KEY_AGREEMENT_OUTPUT_MAX_SIZE]; |
Gilles Peskine | 01d718c | 2018-09-18 12:01:02 +0200 | [diff] [blame] | 7053 | size_t shared_secret_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7054 | 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] | 7055 | |
| 7056 | /* Step 1: run the secret agreement algorithm to generate the shared |
| 7057 | * secret. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7058 | status = psa_key_agreement_raw_internal(ka_alg, |
| 7059 | private_key, |
| 7060 | peer_key, peer_key_length, |
| 7061 | shared_secret, |
| 7062 | sizeof(shared_secret), |
| 7063 | &shared_secret_length); |
| 7064 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7065 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7066 | } |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7067 | |
Gilles Peskine | b0b255c | 2018-07-06 17:01:38 +0200 | [diff] [blame] | 7068 | /* Step 2: set up the key derivation to generate key material from |
Gilles Peskine | 224b0d6 | 2019-09-23 18:13:17 +0200 | [diff] [blame] | 7069 | * the shared secret. A shared secret is permitted wherever a key |
| 7070 | * of type DERIVE is permitted. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7071 | status = psa_key_derivation_input_internal(operation, step, |
| 7072 | PSA_KEY_TYPE_DERIVE, |
| 7073 | shared_secret, |
| 7074 | shared_secret_length); |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7075 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7076 | mbedtls_platform_zeroize(shared_secret, shared_secret_length); |
| 7077 | return status; |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7078 | } |
| 7079 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7080 | psa_status_t psa_key_derivation_key_agreement(psa_key_derivation_operation_t *operation, |
| 7081 | psa_key_derivation_step_t step, |
| 7082 | mbedtls_svc_key_id_t private_key, |
| 7083 | const uint8_t *peer_key, |
| 7084 | size_t peer_key_length) |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7085 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7086 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7087 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | 2f060a8 | 2018-12-04 17:12:32 +0100 | [diff] [blame] | 7088 | psa_key_slot_t *slot; |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7089 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7090 | if (!PSA_ALG_IS_KEY_AGREEMENT(operation->alg)) { |
| 7091 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7092 | } |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7093 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7094 | private_key, &slot, PSA_KEY_USAGE_DERIVE, operation->alg); |
| 7095 | if (status != PSA_SUCCESS) { |
| 7096 | return status; |
| 7097 | } |
| 7098 | status = psa_key_agreement_internal(operation, step, |
| 7099 | slot, |
| 7100 | peer_key, peer_key_length); |
| 7101 | if (status != PSA_SUCCESS) { |
| 7102 | psa_key_derivation_abort(operation); |
| 7103 | } else { |
Steven Cooreman | fa5e631 | 2020-10-15 17:07:12 +0200 | [diff] [blame] | 7104 | /* If a private key has been added as SECRET, we allow the derived |
| 7105 | * key material to be used as a key in PSA Crypto. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7106 | if (step == PSA_KEY_DERIVATION_INPUT_SECRET) { |
Steven Cooreman | fa5e631 | 2020-10-15 17:07:12 +0200 | [diff] [blame] | 7107 | operation->can_output_key = 1; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7108 | } |
Steven Cooreman | fa5e631 | 2020-10-15 17:07:12 +0200 | [diff] [blame] | 7109 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7110 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7111 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7112 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7113 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | af3baab | 2018-06-27 22:55:52 +0200 | [diff] [blame] | 7114 | } |
| 7115 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7116 | psa_status_t psa_raw_key_agreement(psa_algorithm_t alg, |
| 7117 | mbedtls_svc_key_id_t private_key, |
| 7118 | const uint8_t *peer_key, |
| 7119 | size_t peer_key_length, |
| 7120 | uint8_t *output, |
| 7121 | size_t output_size, |
| 7122 | size_t *output_length) |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7123 | { |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7124 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7125 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7126 | psa_key_slot_t *slot = NULL; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 7127 | size_t expected_length; |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7128 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7129 | if (!PSA_ALG_IS_KEY_AGREEMENT(alg)) { |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7130 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 7131 | goto exit; |
| 7132 | } |
Ronald Cron | 5c52292 | 2020-11-14 16:35:34 +0100 | [diff] [blame] | 7133 | status = psa_get_and_lock_transparent_key_slot_with_policy( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7134 | private_key, &slot, PSA_KEY_USAGE_DERIVE, alg); |
| 7135 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7136 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7137 | } |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7138 | |
Gilles Peskine | 3e56130 | 2022-04-14 00:17:15 +0200 | [diff] [blame] | 7139 | /* PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() is in general an upper bound |
| 7140 | * for the output size. The PSA specification only guarantees that this |
| 7141 | * function works if output_size >= PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(...), |
| 7142 | * but it might be nice to allow smaller buffers if the output fits. |
| 7143 | * At the time of writing this comment, with only ECDH implemented, |
| 7144 | * PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() is exact so the point is moot. |
| 7145 | * If FFDH is implemented, PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE() can easily |
| 7146 | * be exact for it as well. */ |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 7147 | expected_length = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7148 | PSA_RAW_KEY_AGREEMENT_OUTPUT_SIZE(slot->attr.type, slot->attr.bits); |
| 7149 | if (output_size < expected_length) { |
Gilles Peskine | 3e56130 | 2022-04-14 00:17:15 +0200 | [diff] [blame] | 7150 | status = PSA_ERROR_BUFFER_TOO_SMALL; |
| 7151 | goto exit; |
| 7152 | } |
| 7153 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7154 | status = psa_key_agreement_raw_internal(alg, slot, |
| 7155 | peer_key, peer_key_length, |
| 7156 | output, output_size, |
| 7157 | output_length); |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7158 | |
| 7159 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7160 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7161 | /* If an error happens and is not handled properly, the output |
| 7162 | * may be used as a key to protect sensitive data. Arrange for such |
| 7163 | * a key to be random, which is likely to result in decryption or |
| 7164 | * verification errors. This is better than filling the buffer with |
| 7165 | * some constant data such as zeros, which would result in the data |
| 7166 | * being protected with a reproducible, easily knowable key. |
| 7167 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7168 | psa_generate_random(output, output_size); |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7169 | *output_length = output_size; |
| 7170 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7171 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7172 | unlock_status = psa_unlock_key_slot(slot); |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7173 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7174 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Gilles Peskine | 0216fe1 | 2019-04-11 21:23:21 +0200 | [diff] [blame] | 7175 | } |
Gilles Peskine | 86a440b | 2018-11-12 18:39:40 +0100 | [diff] [blame] | 7176 | |
| 7177 | |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7178 | |
Gilles Peskine | 86a440b | 2018-11-12 18:39:40 +0100 | [diff] [blame] | 7179 | /****************************************************************/ |
| 7180 | /* Random generation */ |
Gilles Peskine | 53d991e | 2018-07-12 01:14:59 +0200 | [diff] [blame] | 7181 | /****************************************************************/ |
Gilles Peskine | 12313cd | 2018-06-20 00:20:32 +0200 | [diff] [blame] | 7182 | |
Gilles Peskine | 672a771 | 2023-04-28 21:00:28 +0200 | [diff] [blame] | 7183 | #if defined(MBEDTLS_PSA_INJECT_ENTROPY) |
| 7184 | #include "entropy_poll.h" |
| 7185 | #endif |
| 7186 | |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7187 | /** Initialize the PSA random generator. |
| 7188 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7189 | static void mbedtls_psa_random_init(mbedtls_psa_random_context_t *rng) |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7190 | { |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7191 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7192 | memset(rng, 0, sizeof(*rng)); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7193 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
| 7194 | |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7195 | /* Set default configuration if |
| 7196 | * mbedtls_psa_crypto_configure_entropy_sources() hasn't been called. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7197 | if (rng->entropy_init == NULL) { |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7198 | rng->entropy_init = mbedtls_entropy_init; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7199 | } |
| 7200 | if (rng->entropy_free == NULL) { |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7201 | rng->entropy_free = mbedtls_entropy_free; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7202 | } |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7203 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7204 | rng->entropy_init(&rng->entropy); |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7205 | #if defined(MBEDTLS_PSA_INJECT_ENTROPY) && \ |
| 7206 | defined(MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES) |
| 7207 | /* The PSA entropy injection feature depends on using NV seed as an entropy |
| 7208 | * source. Add NV seed as an entropy source for PSA entropy injection. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7209 | mbedtls_entropy_add_source(&rng->entropy, |
| 7210 | mbedtls_nv_seed_poll, NULL, |
| 7211 | MBEDTLS_ENTROPY_BLOCK_SIZE, |
| 7212 | MBEDTLS_ENTROPY_SOURCE_STRONG); |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7213 | #endif |
| 7214 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7215 | mbedtls_psa_drbg_init(MBEDTLS_PSA_RANDOM_STATE); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7216 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7217 | } |
| 7218 | |
| 7219 | /** Deinitialize the PSA random generator. |
| 7220 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7221 | static void mbedtls_psa_random_free(mbedtls_psa_random_context_t *rng) |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7222 | { |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7223 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7224 | memset(rng, 0, sizeof(*rng)); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7225 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7226 | mbedtls_psa_drbg_free(MBEDTLS_PSA_RANDOM_STATE); |
| 7227 | rng->entropy_free(&rng->entropy); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7228 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7229 | } |
| 7230 | |
| 7231 | /** Seed the PSA random generator. |
| 7232 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7233 | 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] | 7234 | { |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7235 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
| 7236 | /* Do nothing: the external RNG seeds itself. */ |
| 7237 | (void) rng; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7238 | return PSA_SUCCESS; |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7239 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7240 | const unsigned char drbg_seed[] = "PSA"; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7241 | int ret = mbedtls_psa_drbg_seed(&rng->entropy, |
| 7242 | drbg_seed, sizeof(drbg_seed) - 1); |
| 7243 | return mbedtls_to_psa_error(ret); |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7244 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7245 | } |
| 7246 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7247 | psa_status_t psa_generate_random(uint8_t *output, |
| 7248 | size_t output_size) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7249 | { |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7250 | GUARD_MODULE_INITIALIZED; |
| 7251 | |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7252 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
| 7253 | |
| 7254 | size_t output_length = 0; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7255 | psa_status_t status = mbedtls_psa_external_get_random(&global_data.rng, |
| 7256 | output, output_size, |
| 7257 | &output_length); |
| 7258 | if (status != PSA_SUCCESS) { |
| 7259 | return status; |
| 7260 | } |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7261 | /* Breaking up a request into smaller chunks is currently not supported |
Tom Cosgrove | 1797b05 | 2022-12-04 17:19:59 +0000 | [diff] [blame] | 7262 | * for the external RNG interface. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7263 | if (output_length != output_size) { |
| 7264 | return PSA_ERROR_INSUFFICIENT_ENTROPY; |
| 7265 | } |
| 7266 | return PSA_SUCCESS; |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7267 | |
| 7268 | #else /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
| 7269 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7270 | while (output_size > 0) { |
Gilles Peskine | 71ddab9 | 2021-01-04 21:01:07 +0100 | [diff] [blame] | 7271 | size_t request_size = |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7272 | (output_size > MBEDTLS_PSA_RANDOM_MAX_REQUEST ? |
| 7273 | MBEDTLS_PSA_RANDOM_MAX_REQUEST : |
| 7274 | output_size); |
| 7275 | int ret = mbedtls_psa_get_random(MBEDTLS_PSA_RANDOM_STATE, |
| 7276 | output, request_size); |
| 7277 | if (ret != 0) { |
| 7278 | return mbedtls_to_psa_error(ret); |
| 7279 | } |
Gilles Peskine | 71ddab9 | 2021-01-04 21:01:07 +0100 | [diff] [blame] | 7280 | output_size -= request_size; |
| 7281 | output += request_size; |
Gilles Peskine | f181eca | 2019-08-07 13:49:00 +0200 | [diff] [blame] | 7282 | } |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7283 | return PSA_SUCCESS; |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7284 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7285 | } |
| 7286 | |
Gilles Peskine | 8814fc4 | 2020-12-14 15:33:44 +0100 | [diff] [blame] | 7287 | /* Wrapper function allowing the classic API to use the PSA RNG. |
Gilles Peskine | 9c3e060 | 2021-01-05 16:03:55 +0100 | [diff] [blame] | 7288 | * |
| 7289 | * `mbedtls_psa_get_random(MBEDTLS_PSA_RANDOM_STATE, ...)` calls |
| 7290 | * `psa_generate_random(...)`. The state parameter is ignored since the |
| 7291 | * PSA API doesn't support passing an explicit state. |
| 7292 | * |
| 7293 | * In the non-external case, psa_generate_random() calls an |
| 7294 | * `mbedtls_xxx_drbg_random` function which has exactly the same signature |
| 7295 | * and semantics as mbedtls_psa_get_random(). As an optimization, |
| 7296 | * instead of doing this back-and-forth between the PSA API and the |
| 7297 | * classic API, psa_crypto_random_impl.h defines `mbedtls_psa_get_random` |
| 7298 | * as a constant function pointer to `mbedtls_xxx_drbg_random`. |
Gilles Peskine | 8814fc4 | 2020-12-14 15:33:44 +0100 | [diff] [blame] | 7299 | */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7300 | #if defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
| 7301 | int mbedtls_psa_get_random(void *p_rng, |
| 7302 | unsigned char *output, |
| 7303 | size_t output_size) |
Gilles Peskine | 8814fc4 | 2020-12-14 15:33:44 +0100 | [diff] [blame] | 7304 | { |
Gilles Peskine | 9c3e060 | 2021-01-05 16:03:55 +0100 | [diff] [blame] | 7305 | /* This function takes a pointer to the RNG state because that's what |
| 7306 | * classic mbedtls functions using an RNG expect. The PSA RNG manages |
| 7307 | * its own state internally and doesn't let the caller access that state. |
| 7308 | * So we just ignore the state parameter, and in practice we'll pass |
| 7309 | * NULL. */ |
Gilles Peskine | 8814fc4 | 2020-12-14 15:33:44 +0100 | [diff] [blame] | 7310 | (void) p_rng; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7311 | psa_status_t status = psa_generate_random(output, output_size); |
| 7312 | if (status == PSA_SUCCESS) { |
| 7313 | return 0; |
| 7314 | } else { |
| 7315 | return MBEDTLS_ERR_ENTROPY_SOURCE_FAILED; |
| 7316 | } |
Gilles Peskine | 8814fc4 | 2020-12-14 15:33:44 +0100 | [diff] [blame] | 7317 | } |
| 7318 | #endif /* MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG */ |
| 7319 | |
Gilles Peskine | e3dbdd8 | 2019-02-25 11:04:06 +0100 | [diff] [blame] | 7320 | #if defined(MBEDTLS_PSA_INJECT_ENTROPY) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7321 | psa_status_t mbedtls_psa_inject_entropy(const uint8_t *seed, |
| 7322 | size_t seed_size) |
Netanel Gonen | 2bcd312 | 2018-11-19 11:53:02 +0200 | [diff] [blame] | 7323 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7324 | if (global_data.initialized) { |
| 7325 | return PSA_ERROR_NOT_PERMITTED; |
| 7326 | } |
Netanel Gonen | 21f37cb | 2018-11-19 11:53:55 +0200 | [diff] [blame] | 7327 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7328 | if (((seed_size < MBEDTLS_ENTROPY_MIN_PLATFORM) || |
| 7329 | (seed_size < MBEDTLS_ENTROPY_BLOCK_SIZE)) || |
| 7330 | (seed_size > MBEDTLS_ENTROPY_MAX_SEED_SIZE)) { |
| 7331 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7332 | } |
Netanel Gonen | 21f37cb | 2018-11-19 11:53:55 +0200 | [diff] [blame] | 7333 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7334 | return mbedtls_psa_storage_inject_entropy(seed, seed_size); |
Netanel Gonen | 2bcd312 | 2018-11-19 11:53:02 +0200 | [diff] [blame] | 7335 | } |
Gilles Peskine | e3dbdd8 | 2019-02-25 11:04:06 +0100 | [diff] [blame] | 7336 | #endif /* MBEDTLS_PSA_INJECT_ENTROPY */ |
Netanel Gonen | 2bcd312 | 2018-11-19 11:53:02 +0200 | [diff] [blame] | 7337 | |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7338 | /** Validate the key type and size for key generation |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7339 | * |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7340 | * \param type The key type |
| 7341 | * \param bits The number of bits of the key |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7342 | * |
| 7343 | * \retval #PSA_SUCCESS |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7344 | * The key type and size are valid. |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7345 | * \retval #PSA_ERROR_INVALID_ARGUMENT |
| 7346 | * The size in bits of the key is not valid. |
| 7347 | * \retval #PSA_ERROR_NOT_SUPPORTED |
| 7348 | * The type and/or the size in bits of the key or the combination of |
| 7349 | * the two is not supported. |
| 7350 | */ |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7351 | 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] | 7352 | psa_key_type_t type, size_t bits) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7353 | { |
Ronald Cron | f3bb761 | 2020-10-02 20:11:59 +0200 | [diff] [blame] | 7354 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7355 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7356 | if (key_type_is_raw_bytes(type)) { |
| 7357 | status = psa_validate_unstructured_key_bit_size(type, bits); |
| 7358 | if (status != PSA_SUCCESS) { |
| 7359 | return status; |
| 7360 | } |
| 7361 | } else |
Valerio Setti | f6d4dfb | 2023-07-10 10:55:12 +0200 | [diff] [blame] | 7362 | #if defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7363 | if (PSA_KEY_TYPE_IS_RSA(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
| 7364 | if (bits > PSA_VENDOR_RSA_MAX_KEY_BITS) { |
| 7365 | return PSA_ERROR_NOT_SUPPORTED; |
| 7366 | } |
Waleed Elmelegy | d7bdbbe | 2023-07-20 16:26:58 +0000 | [diff] [blame] | 7367 | if (bits < PSA_VENDOR_RSA_GENERATE_MIN_KEY_BITS) { |
Waleed Elmelegy | ab57071 | 2023-07-05 16:40:58 +0000 | [diff] [blame] | 7368 | return PSA_ERROR_NOT_SUPPORTED; |
| 7369 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 7370 | |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7371 | /* Accept only byte-aligned keys, for the same reasons as |
| 7372 | * in psa_import_rsa_key(). */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7373 | if (bits % 8 != 0) { |
| 7374 | return PSA_ERROR_NOT_SUPPORTED; |
| 7375 | } |
| 7376 | } else |
Valerio Setti | f6d4dfb | 2023-07-10 10:55:12 +0200 | [diff] [blame] | 7377 | #endif /* defined(PSA_WANT_KEY_TYPE_RSA_KEY_PAIR_GENERATE) */ |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7378 | |
Valerio Setti | 6a9d0ee | 2023-06-21 10:07:21 +0200 | [diff] [blame] | 7379 | #if defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7380 | 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] | 7381 | /* To avoid empty block, return successfully here. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7382 | return PSA_SUCCESS; |
| 7383 | } else |
Valerio Setti | 6a9d0ee | 2023-06-21 10:07:21 +0200 | [diff] [blame] | 7384 | #endif /* defined(PSA_WANT_KEY_TYPE_ECC_KEY_PAIR_GENERATE) */ |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7385 | |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7386 | #if defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE) |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7387 | 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] | 7388 | if (psa_is_dh_key_size_valid(bits) == 0) { |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7389 | return PSA_ERROR_NOT_SUPPORTED; |
| 7390 | } |
| 7391 | } else |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7392 | #endif /* defined(PSA_WANT_KEY_TYPE_DH_KEY_PAIR_GENERATE) */ |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7393 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7394 | return PSA_ERROR_NOT_SUPPORTED; |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7395 | } |
| 7396 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7397 | return PSA_SUCCESS; |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7398 | } |
| 7399 | |
Ronald Cron | 55ed059 | 2020-10-05 10:30:40 +0200 | [diff] [blame] | 7400 | psa_status_t psa_generate_key_internal( |
Ronald Cron | 2a38a6b | 2020-10-02 20:02:04 +0200 | [diff] [blame] | 7401 | const psa_key_attributes_t *attributes, |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7402 | 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] | 7403 | { |
| 7404 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Ronald Cron | 2a38a6b | 2020-10-02 20:02:04 +0200 | [diff] [blame] | 7405 | psa_key_type_t type = attributes->core.type; |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7406 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7407 | if ((attributes->domain_parameters == NULL) && |
| 7408 | (attributes->domain_parameters_size != 0)) { |
| 7409 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7410 | } |
Ronald Cron | 01b2aba | 2020-10-05 09:42:02 +0200 | [diff] [blame] | 7411 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7412 | if (key_type_is_raw_bytes(type)) { |
| 7413 | status = psa_generate_random(key_buffer, key_buffer_size); |
| 7414 | if (status != PSA_SUCCESS) { |
| 7415 | return status; |
| 7416 | } |
Steven Cooreman | 81be2fa | 2020-07-24 22:04:59 +0200 | [diff] [blame] | 7417 | |
David Brown | 12ca503 | 2021-02-11 11:02:00 -0700 | [diff] [blame] | 7418 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7419 | if (type == PSA_KEY_TYPE_DES) { |
| 7420 | psa_des_set_key_parity(key_buffer, key_buffer_size); |
| 7421 | } |
David Brown | 8107e31 | 2021-02-12 08:08:46 -0700 | [diff] [blame] | 7422 | #endif /* MBEDTLS_PSA_BUILTIN_KEY_TYPE_DES */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7423 | } else |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7424 | |
Valerio Setti | 76df8c1 | 2023-07-11 14:11:28 +0200 | [diff] [blame] | 7425 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7426 | if (type == PSA_KEY_TYPE_RSA_KEY_PAIR) { |
| 7427 | return mbedtls_psa_rsa_generate_key(attributes, |
| 7428 | key_buffer, |
| 7429 | key_buffer_size, |
| 7430 | key_buffer_length); |
| 7431 | } else |
Valerio Setti | 76df8c1 | 2023-07-11 14:11:28 +0200 | [diff] [blame] | 7432 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_RSA_KEY_PAIR_GENERATE) */ |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7433 | |
Valerio Setti | bfeaf5b | 2023-06-20 13:27:46 +0200 | [diff] [blame] | 7434 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_GENERATE) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7435 | if (PSA_KEY_TYPE_IS_ECC(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
| 7436 | return mbedtls_psa_ecp_generate_key(attributes, |
| 7437 | key_buffer, |
| 7438 | key_buffer_size, |
| 7439 | key_buffer_length); |
| 7440 | } else |
Valerio Setti | bfeaf5b | 2023-06-20 13:27:46 +0200 | [diff] [blame] | 7441 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_ECC_KEY_PAIR_GENERATE) */ |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7442 | |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7443 | #if defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_GENERATE) |
Przemek Stekiel | fedd134 | 2022-12-01 15:00:02 +0100 | [diff] [blame] | 7444 | if (PSA_KEY_TYPE_IS_DH(type) && PSA_KEY_TYPE_IS_KEY_PAIR(type)) { |
| 7445 | return mbedtls_psa_ffdh_generate_key(attributes, |
| 7446 | key_buffer, |
| 7447 | key_buffer_size, |
| 7448 | key_buffer_length); |
| 7449 | } else |
Valerio Setti | a55f042 | 2023-07-10 15:34:41 +0200 | [diff] [blame] | 7450 | #endif /* defined(MBEDTLS_PSA_BUILTIN_KEY_TYPE_DH_KEY_PAIR_GENERATE) */ |
Steven Cooreman | 2914986 | 2020-08-05 15:43:42 +0200 | [diff] [blame] | 7451 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7452 | (void) key_buffer_length; |
| 7453 | return PSA_ERROR_NOT_SUPPORTED; |
Steven Cooreman | 2914986 | 2020-08-05 15:43:42 +0200 | [diff] [blame] | 7454 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7455 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7456 | return PSA_SUCCESS; |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 7457 | } |
Darryl Green | 0c6575a | 2018-11-07 16:05:30 +0000 | [diff] [blame] | 7458 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7459 | psa_status_t psa_generate_key(const psa_key_attributes_t *attributes, |
| 7460 | mbedtls_svc_key_id_t *key) |
Gilles Peskine | ff5f0e7 | 2019-04-18 12:53:30 +0200 | [diff] [blame] | 7461 | { |
| 7462 | psa_status_t status; |
| 7463 | psa_key_slot_t *slot = NULL; |
Gilles Peskine | 8abe6a2 | 2019-07-12 23:40:35 +0200 | [diff] [blame] | 7464 | psa_se_drv_table_entry_t *driver = NULL; |
Ronald Cron | 2b56bc8 | 2020-10-05 10:02:26 +0200 | [diff] [blame] | 7465 | size_t key_buffer_size; |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 7466 | |
Ronald Cron | 81709fc | 2020-11-14 12:10:32 +0100 | [diff] [blame] | 7467 | *key = MBEDTLS_SVC_KEY_ID_INIT; |
| 7468 | |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 7469 | /* Reject any attempt to create a zero-length key so that we don't |
| 7470 | * 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] | 7471 | if (psa_get_key_bits(attributes) == 0) { |
| 7472 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7473 | } |
Gilles Peskine | 0f84d62 | 2019-09-12 19:03:13 +0200 | [diff] [blame] | 7474 | |
Przemyslaw Stekiel | c0fe820 | 2021-10-07 11:08:56 +0200 | [diff] [blame] | 7475 | /* Reject any attempt to create a public key. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7476 | if (PSA_KEY_TYPE_IS_PUBLIC_KEY(attributes->core.type)) { |
| 7477 | return PSA_ERROR_INVALID_ARGUMENT; |
| 7478 | } |
Przemyslaw Stekiel | c0fe820 | 2021-10-07 11:08:56 +0200 | [diff] [blame] | 7479 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7480 | status = psa_start_key_creation(PSA_KEY_CREATION_GENERATE, attributes, |
| 7481 | &slot, &driver); |
| 7482 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 7483 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7484 | } |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 7485 | |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 7486 | /* 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] | 7487 | * storage ( thus not in the case of generating a key in a secure element |
| 7488 | * with storage ( MBEDTLS_PSA_CRYPTO_SE_C ) ),we have to allocate a |
| 7489 | * buffer to hold the generated key material. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7490 | if (slot->key.data == NULL) { |
| 7491 | if (PSA_KEY_LIFETIME_GET_LOCATION(attributes->core.lifetime) == |
| 7492 | PSA_KEY_LOCATION_LOCAL_STORAGE) { |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7493 | status = psa_validate_key_type_and_size_for_key_generation( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7494 | attributes->core.type, attributes->core.bits); |
| 7495 | if (status != PSA_SUCCESS) { |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7496 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7497 | } |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7498 | |
| 7499 | key_buffer_size = PSA_EXPORT_KEY_OUTPUT_SIZE( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7500 | attributes->core.type, |
| 7501 | attributes->core.bits); |
| 7502 | } else { |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 7503 | status = psa_driver_wrapper_get_key_buffer_size( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7504 | attributes, &key_buffer_size); |
| 7505 | if (status != PSA_SUCCESS) { |
Ronald Cron | 3772afe | 2021-02-08 16:10:05 +0100 | [diff] [blame] | 7506 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7507 | } |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 7508 | } |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 7509 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7510 | status = psa_allocate_buffer_to_slot(slot, key_buffer_size); |
| 7511 | if (status != PSA_SUCCESS) { |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 7512 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7513 | } |
Ronald Cron | 977c247 | 2020-10-13 08:32:21 +0200 | [diff] [blame] | 7514 | } |
| 7515 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7516 | status = psa_driver_wrapper_generate_key(attributes, |
| 7517 | slot->key.data, slot->key.bytes, &slot->key.bytes); |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 7518 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7519 | if (status != PSA_SUCCESS) { |
| 7520 | psa_remove_key_data_from_memory(slot); |
| 7521 | } |
Ronald Cron | 2b56bc8 | 2020-10-05 10:02:26 +0200 | [diff] [blame] | 7522 | |
Gilles Peskine | 1179208 | 2019-08-06 18:36:36 +0200 | [diff] [blame] | 7523 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7524 | if (status == PSA_SUCCESS) { |
| 7525 | status = psa_finish_key_creation(slot, driver, key); |
| 7526 | } |
| 7527 | if (status != PSA_SUCCESS) { |
| 7528 | psa_fail_key_creation(slot, driver); |
| 7529 | } |
Ronald Cron | f95a2b1 | 2020-10-22 15:24:49 +0200 | [diff] [blame] | 7530 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7531 | return status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7532 | } |
| 7533 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7534 | /****************************************************************/ |
| 7535 | /* Module setup */ |
| 7536 | /****************************************************************/ |
| 7537 | |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7538 | #if !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 7539 | psa_status_t mbedtls_psa_crypto_configure_entropy_sources( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7540 | void (* entropy_init)(mbedtls_entropy_context *ctx), |
| 7541 | void (* entropy_free)(mbedtls_entropy_context *ctx)) |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 7542 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7543 | if (global_data.rng_state != RNG_NOT_INITIALIZED) { |
| 7544 | return PSA_ERROR_BAD_STATE; |
| 7545 | } |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7546 | global_data.rng.entropy_init = entropy_init; |
| 7547 | global_data.rng.entropy_free = entropy_free; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7548 | return PSA_SUCCESS; |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 7549 | } |
Gilles Peskine | 4fc21fd | 2020-11-13 18:47:18 +0100 | [diff] [blame] | 7550 | #endif /* !defined(MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG) */ |
Gilles Peskine | 5e76952 | 2018-11-20 21:59:56 +0100 | [diff] [blame] | 7551 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7552 | void mbedtls_psa_crypto_free(void) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7553 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7554 | psa_wipe_all_key_slots(); |
| 7555 | if (global_data.rng_state != RNG_NOT_INITIALIZED) { |
| 7556 | mbedtls_psa_random_free(&global_data.rng); |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 7557 | } |
| 7558 | /* Wipe all remaining data, including configuration. |
| 7559 | * In particular, this sets all state indicator to the value |
| 7560 | * indicating "uninitialized". */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7561 | mbedtls_platform_zeroize(&global_data, sizeof(global_data)); |
Ronald Cron | 9ba7691 | 2021-04-10 16:57:30 +0200 | [diff] [blame] | 7562 | |
| 7563 | /* Terminate drivers */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7564 | psa_driver_wrapper_free(); |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7565 | } |
| 7566 | |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 7567 | #if defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS) |
| 7568 | /** Recover a transaction that was interrupted by a power failure. |
| 7569 | * |
| 7570 | * This function is called during initialization, before psa_crypto_init() |
| 7571 | * returns. If this function returns a failure status, the initialization |
| 7572 | * fails. |
| 7573 | */ |
| 7574 | static psa_status_t psa_crypto_recover_transaction( |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7575 | const psa_crypto_transaction_t *transaction) |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 7576 | { |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7577 | switch (transaction->unknown.type) { |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 7578 | case PSA_CRYPTO_TRANSACTION_CREATE_KEY: |
| 7579 | case PSA_CRYPTO_TRANSACTION_DESTROY_KEY: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7580 | /* TODO - fall through to the failure case until this |
| 7581 | * is implemented. |
| 7582 | * https://github.com/ARMmbed/mbed-crypto/issues/218 |
| 7583 | */ |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 7584 | default: |
| 7585 | /* We found an unsupported transaction in the storage. |
| 7586 | * We don't know what state the storage is in. Give up. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7587 | return PSA_ERROR_DATA_INVALID; |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 7588 | } |
| 7589 | } |
| 7590 | #endif /* PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS */ |
| 7591 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7592 | psa_status_t psa_crypto_init(void) |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7593 | { |
Gilles Peskine | 66fb126 | 2018-12-10 16:29:04 +0100 | [diff] [blame] | 7594 | psa_status_t status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7595 | |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 7596 | /* Double initialization is explicitly allowed. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7597 | if (global_data.initialized != 0) { |
| 7598 | return PSA_SUCCESS; |
| 7599 | } |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7600 | |
Manuel Pégourié-Gonnard | 7abdf7e | 2023-03-09 11:17:43 +0100 | [diff] [blame] | 7601 | /* Init drivers */ |
| 7602 | status = psa_driver_wrapper_init(); |
| 7603 | if (status != PSA_SUCCESS) { |
| 7604 | goto exit; |
| 7605 | } |
| 7606 | global_data.drivers_initialized = 1; |
| 7607 | |
Gilles Peskine | 30524eb | 2020-11-13 17:02:26 +0100 | [diff] [blame] | 7608 | /* Initialize and seed the random generator. */ |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7609 | mbedtls_psa_random_init(&global_data.rng); |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 7610 | global_data.rng_state = RNG_INITIALIZED; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7611 | status = mbedtls_psa_random_seed(&global_data.rng); |
| 7612 | if (status != PSA_SUCCESS) { |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7613 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7614 | } |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 7615 | global_data.rng_state = RNG_SEEDED; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7616 | |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7617 | status = psa_initialize_key_slots(); |
| 7618 | if (status != PSA_SUCCESS) { |
Gilles Peskine | 66fb126 | 2018-12-10 16:29:04 +0100 | [diff] [blame] | 7619 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7620 | } |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 7621 | |
Gilles Peskine | 4b73422 | 2019-07-24 15:56:31 +0200 | [diff] [blame] | 7622 | #if defined(PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS) |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7623 | status = psa_crypto_load_transaction(); |
| 7624 | if (status == PSA_SUCCESS) { |
| 7625 | status = psa_crypto_recover_transaction(&psa_crypto_transaction); |
| 7626 | if (status != PSA_SUCCESS) { |
Gilles Peskine | f9bb29e | 2019-07-25 17:52:59 +0200 | [diff] [blame] | 7627 | goto exit; |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7628 | } |
| 7629 | status = psa_crypto_stop_transaction(); |
| 7630 | } else if (status == PSA_ERROR_DOES_NOT_EXIST) { |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 7631 | /* There's no transaction to complete. It's all good. */ |
| 7632 | status = PSA_SUCCESS; |
| 7633 | } |
Gilles Peskine | 4b73422 | 2019-07-24 15:56:31 +0200 | [diff] [blame] | 7634 | #endif /* PSA_CRYPTO_STORAGE_HAS_TRANSACTIONS */ |
Gilles Peskine | fc76265 | 2019-07-22 19:30:34 +0200 | [diff] [blame] | 7635 | |
Gilles Peskine | c6b6907 | 2018-11-20 21:42:52 +0100 | [diff] [blame] | 7636 | /* All done. */ |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7637 | global_data.initialized = 1; |
| 7638 | |
| 7639 | exit: |
Gilles Peskine | 449bd83 | 2023-01-11 14:50:10 +0100 | [diff] [blame] | 7640 | if (status != PSA_SUCCESS) { |
| 7641 | mbedtls_psa_crypto_free(); |
| 7642 | } |
| 7643 | return status; |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 7644 | } |
| 7645 | |
Yanray Wang | ffc3c48 | 2023-07-11 12:01:04 +0800 | [diff] [blame] | 7646 | #if defined(PSA_WANT_ALG_SOME_PAKE) |
Przemek Stekiel | ca8d2b2 | 2023-01-17 16:21:33 +0100 | [diff] [blame] | 7647 | psa_status_t psa_crypto_driver_pake_get_password_len( |
| 7648 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 7649 | size_t *password_len) |
| 7650 | { |
| 7651 | if (inputs->password_len == 0) { |
| 7652 | return PSA_ERROR_BAD_STATE; |
| 7653 | } |
| 7654 | |
| 7655 | *password_len = inputs->password_len; |
| 7656 | |
| 7657 | return PSA_SUCCESS; |
| 7658 | } |
| 7659 | |
| 7660 | psa_status_t psa_crypto_driver_pake_get_password( |
| 7661 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 7662 | uint8_t *buffer, size_t buffer_size, size_t *buffer_length) |
| 7663 | { |
| 7664 | if (inputs->password_len == 0) { |
| 7665 | return PSA_ERROR_BAD_STATE; |
| 7666 | } |
| 7667 | |
| 7668 | if (buffer_size < inputs->password_len) { |
| 7669 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 7670 | } |
| 7671 | |
| 7672 | memcpy(buffer, inputs->password, inputs->password_len); |
| 7673 | *buffer_length = inputs->password_len; |
| 7674 | |
| 7675 | return PSA_SUCCESS; |
| 7676 | } |
| 7677 | |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 7678 | psa_status_t psa_crypto_driver_pake_get_user_len( |
| 7679 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 7680 | size_t *user_len) |
| 7681 | { |
| 7682 | if (inputs->user_len == 0) { |
| 7683 | return PSA_ERROR_BAD_STATE; |
| 7684 | } |
| 7685 | |
| 7686 | *user_len = inputs->user_len; |
| 7687 | |
| 7688 | return PSA_SUCCESS; |
| 7689 | } |
| 7690 | |
| 7691 | psa_status_t psa_crypto_driver_pake_get_user( |
| 7692 | const psa_crypto_driver_pake_inputs_t *inputs, |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 7693 | 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] | 7694 | { |
| 7695 | if (inputs->user_len == 0) { |
| 7696 | return PSA_ERROR_BAD_STATE; |
| 7697 | } |
| 7698 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 7699 | if (user_id_size < inputs->user_len) { |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 7700 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 7701 | } |
| 7702 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 7703 | memcpy(user_id, inputs->user, inputs->user_len); |
| 7704 | *user_id_len = inputs->user_len; |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 7705 | |
| 7706 | return PSA_SUCCESS; |
| 7707 | } |
| 7708 | |
| 7709 | psa_status_t psa_crypto_driver_pake_get_peer_len( |
| 7710 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 7711 | size_t *peer_len) |
| 7712 | { |
| 7713 | if (inputs->peer_len == 0) { |
| 7714 | return PSA_ERROR_BAD_STATE; |
| 7715 | } |
| 7716 | |
| 7717 | *peer_len = inputs->peer_len; |
| 7718 | |
| 7719 | return PSA_SUCCESS; |
| 7720 | } |
| 7721 | |
| 7722 | psa_status_t psa_crypto_driver_pake_get_peer( |
| 7723 | const psa_crypto_driver_pake_inputs_t *inputs, |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 7724 | 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] | 7725 | { |
| 7726 | if (inputs->peer_len == 0) { |
| 7727 | return PSA_ERROR_BAD_STATE; |
| 7728 | } |
| 7729 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 7730 | if (peer_id_size < inputs->peer_len) { |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 7731 | return PSA_ERROR_BUFFER_TOO_SMALL; |
| 7732 | } |
| 7733 | |
Przemek Stekiel | c0e6250 | 2023-03-14 11:49:36 +0100 | [diff] [blame] | 7734 | memcpy(peer_id, inputs->peer, inputs->peer_len); |
| 7735 | *peer_id_length = inputs->peer_len; |
Przemek Stekiel | 1e7a927 | 2023-02-28 14:38:58 +0100 | [diff] [blame] | 7736 | |
| 7737 | return PSA_SUCCESS; |
| 7738 | } |
| 7739 | |
Przemek Stekiel | ca8d2b2 | 2023-01-17 16:21:33 +0100 | [diff] [blame] | 7740 | psa_status_t psa_crypto_driver_pake_get_cipher_suite( |
| 7741 | const psa_crypto_driver_pake_inputs_t *inputs, |
| 7742 | psa_pake_cipher_suite_t *cipher_suite) |
| 7743 | { |
| 7744 | if (inputs->cipher_suite.algorithm == PSA_ALG_NONE) { |
| 7745 | return PSA_ERROR_BAD_STATE; |
| 7746 | } |
| 7747 | |
| 7748 | *cipher_suite = inputs->cipher_suite; |
| 7749 | |
| 7750 | return PSA_SUCCESS; |
| 7751 | } |
| 7752 | |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 7753 | psa_status_t psa_pake_setup( |
| 7754 | psa_pake_operation_t *operation, |
| 7755 | const psa_pake_cipher_suite_t *cipher_suite) |
| 7756 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7757 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7758 | |
Przemek Stekiel | 1c3cfb4 | 2023-01-26 10:35:02 +0100 | [diff] [blame] | 7759 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_SETUP) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7760 | status = PSA_ERROR_BAD_STATE; |
| 7761 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7762 | } |
| 7763 | |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 7764 | if (PSA_ALG_IS_PAKE(cipher_suite->algorithm) == 0 || |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7765 | PSA_ALG_IS_HASH(cipher_suite->hash) == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7766 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 7767 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7768 | } |
| 7769 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7770 | memset(&operation->data.inputs, 0, sizeof(operation->data.inputs)); |
| 7771 | |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 7772 | operation->alg = cipher_suite->algorithm; |
Przemek Stekiel | 656b259 | 2023-03-22 13:15:33 +0100 | [diff] [blame] | 7773 | operation->primitive = PSA_PAKE_PRIMITIVE(cipher_suite->type, |
| 7774 | cipher_suite->family, cipher_suite->bits); |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7775 | operation->data.inputs.cipher_suite = *cipher_suite; |
| 7776 | |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 7777 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 7778 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 7779 | psa_jpake_computation_stage_t *computation_stage = |
Przemek Stekiel | dde6a91 | 2023-01-26 08:46:37 +0100 | [diff] [blame] | 7780 | &operation->computation_stage.jpake; |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 7781 | |
David Horstmann | 16f0151 | 2023-06-14 17:21:07 +0100 | [diff] [blame] | 7782 | memset(computation_stage, 0, sizeof(*computation_stage)); |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 7783 | computation_stage->step = PSA_PAKE_STEP_KEY_SHARE; |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 7784 | } else |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7785 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 7786 | { |
| 7787 | status = PSA_ERROR_NOT_SUPPORTED; |
| 7788 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 7789 | } |
| 7790 | |
Przemek Stekiel | 1c3cfb4 | 2023-01-26 10:35:02 +0100 | [diff] [blame] | 7791 | operation->stage = PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS; |
| 7792 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7793 | return PSA_SUCCESS; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7794 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7795 | psa_pake_abort(operation); |
| 7796 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 7797 | } |
| 7798 | |
| 7799 | psa_status_t psa_pake_set_password_key( |
| 7800 | psa_pake_operation_t *operation, |
| 7801 | mbedtls_svc_key_id_t password) |
| 7802 | { |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7803 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 7804 | psa_status_t unlock_status = PSA_ERROR_CORRUPTION_DETECTED; |
| 7805 | psa_key_slot_t *slot = NULL; |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 7806 | psa_key_attributes_t attributes; |
| 7807 | psa_key_type_t type; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7808 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7809 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7810 | status = PSA_ERROR_BAD_STATE; |
| 7811 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7812 | } |
| 7813 | |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 7814 | status = psa_get_and_lock_key_slot_with_policy(password, &slot, |
| 7815 | PSA_KEY_USAGE_DERIVE, |
Przemek Stekiel | d5d28a2 | 2023-01-26 10:46:05 +0100 | [diff] [blame] | 7816 | operation->alg); |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7817 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7818 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7819 | } |
| 7820 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 7821 | attributes = (psa_key_attributes_t) { |
Przemek Stekiel | 6c76441 | 2022-11-22 14:05:12 +0100 | [diff] [blame] | 7822 | .core = slot->attr |
| 7823 | }; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7824 | |
Agathiyan Bragadeesh | 4d47cea | 2023-07-17 16:57:24 +0100 | [diff] [blame] | 7825 | type = psa_get_key_type(&attributes); |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7826 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7827 | if (type != PSA_KEY_TYPE_PASSWORD && |
| 7828 | type != PSA_KEY_TYPE_PASSWORD_HASH) { |
| 7829 | status = PSA_ERROR_INVALID_ARGUMENT; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7830 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7831 | } |
| 7832 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7833 | operation->data.inputs.password = mbedtls_calloc(1, slot->key.bytes); |
| 7834 | if (operation->data.inputs.password == NULL) { |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 7835 | status = PSA_ERROR_INSUFFICIENT_MEMORY; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7836 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7837 | } |
| 7838 | |
| 7839 | memcpy(operation->data.inputs.password, slot->key.data, slot->key.bytes); |
| 7840 | operation->data.inputs.password_len = slot->key.bytes; |
Przemek Stekiel | 9dd2440 | 2023-01-26 15:06:09 +0100 | [diff] [blame] | 7841 | operation->data.inputs.attributes = attributes; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7842 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7843 | if (status != PSA_SUCCESS) { |
| 7844 | psa_pake_abort(operation); |
| 7845 | } |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7846 | unlock_status = psa_unlock_key_slot(slot); |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7847 | return (status == PSA_SUCCESS) ? unlock_status : status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 7848 | } |
| 7849 | |
| 7850 | psa_status_t psa_pake_set_user( |
| 7851 | psa_pake_operation_t *operation, |
| 7852 | const uint8_t *user_id, |
| 7853 | size_t user_id_len) |
| 7854 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7855 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7856 | |
| 7857 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7858 | status = PSA_ERROR_BAD_STATE; |
| 7859 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7860 | } |
| 7861 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7862 | if (user_id_len == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7863 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 7864 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7865 | } |
| 7866 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 7867 | if (operation->data.inputs.user_len != 0) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7868 | status = PSA_ERROR_BAD_STATE; |
| 7869 | goto exit; |
| 7870 | } |
| 7871 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 7872 | operation->data.inputs.user = mbedtls_calloc(1, user_id_len); |
| 7873 | if (operation->data.inputs.user == NULL) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7874 | status = PSA_ERROR_INSUFFICIENT_MEMORY; |
| 7875 | goto exit; |
| 7876 | } |
| 7877 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 7878 | memcpy(operation->data.inputs.user, user_id, user_id_len); |
| 7879 | operation->data.inputs.user_len = user_id_len; |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7880 | |
| 7881 | return PSA_SUCCESS; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7882 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7883 | psa_pake_abort(operation); |
| 7884 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 7885 | } |
| 7886 | |
| 7887 | psa_status_t psa_pake_set_peer( |
| 7888 | psa_pake_operation_t *operation, |
| 7889 | const uint8_t *peer_id, |
| 7890 | size_t peer_id_len) |
| 7891 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7892 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7893 | |
| 7894 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7895 | status = PSA_ERROR_BAD_STATE; |
| 7896 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7897 | } |
| 7898 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7899 | if (peer_id_len == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7900 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 7901 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7902 | } |
| 7903 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 7904 | if (operation->data.inputs.peer_len != 0) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7905 | status = PSA_ERROR_BAD_STATE; |
| 7906 | goto exit; |
| 7907 | } |
| 7908 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 7909 | operation->data.inputs.peer = mbedtls_calloc(1, peer_id_len); |
| 7910 | if (operation->data.inputs.peer == NULL) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7911 | status = PSA_ERROR_INSUFFICIENT_MEMORY; |
| 7912 | goto exit; |
| 7913 | } |
| 7914 | |
Przemek Stekiel | f309d6b | 2023-03-10 09:54:45 +0100 | [diff] [blame] | 7915 | memcpy(operation->data.inputs.peer, peer_id, peer_id_len); |
| 7916 | operation->data.inputs.peer_len = peer_id_len; |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7917 | |
| 7918 | return PSA_SUCCESS; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7919 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7920 | psa_pake_abort(operation); |
| 7921 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 7922 | } |
| 7923 | |
| 7924 | psa_status_t psa_pake_set_role( |
| 7925 | psa_pake_operation_t *operation, |
| 7926 | psa_pake_role_t role) |
| 7927 | { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7928 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7929 | |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7930 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7931 | status = PSA_ERROR_BAD_STATE; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7932 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 7933 | } |
| 7934 | |
Przemek Stekiel | 09104b8 | 2023-03-06 14:11:51 +0100 | [diff] [blame] | 7935 | switch (operation->alg) { |
| 7936 | #if defined(PSA_WANT_ALG_JPAKE) |
| 7937 | case PSA_ALG_JPAKE: |
| 7938 | if (role == PSA_PAKE_ROLE_NONE) { |
| 7939 | return PSA_SUCCESS; |
| 7940 | } |
| 7941 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 7942 | break; |
| 7943 | #endif |
| 7944 | default: |
| 7945 | (void) role; |
| 7946 | status = PSA_ERROR_NOT_SUPPORTED; |
| 7947 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 7948 | } |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 7949 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7950 | psa_pake_abort(operation); |
| 7951 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 7952 | } |
| 7953 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 7954 | /* Auxiliary function to convert core computation stage to single driver step. */ |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 7955 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | 251e86a | 2023-02-17 14:30:50 +0100 | [diff] [blame] | 7956 | 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] | 7957 | psa_jpake_computation_stage_t *stage) |
Przemek Stekiel | b09c487 | 2023-01-17 12:05:38 +0100 | [diff] [blame] | 7958 | { |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 7959 | psa_crypto_driver_pake_step_t key_share_step; |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 7960 | if (stage->round == PSA_JPAKE_FIRST) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 7961 | int is_x1; |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 7962 | |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 7963 | if (stage->io_mode == PSA_JPAKE_OUTPUT) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 7964 | is_x1 = (stage->outputs < 1); |
| 7965 | } else { |
| 7966 | is_x1 = (stage->inputs < 1); |
| 7967 | } |
| 7968 | |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 7969 | key_share_step = is_x1 ? |
| 7970 | PSA_JPAKE_X1_STEP_KEY_SHARE : |
| 7971 | PSA_JPAKE_X2_STEP_KEY_SHARE; |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 7972 | } else if (stage->round == PSA_JPAKE_SECOND) { |
David Horstmann | 74a3d8c | 2023-06-14 18:28:19 +0100 | [diff] [blame] | 7973 | key_share_step = (stage->io_mode == PSA_JPAKE_OUTPUT) ? |
| 7974 | PSA_JPAKE_X2S_STEP_KEY_SHARE : |
| 7975 | PSA_JPAKE_X4S_STEP_KEY_SHARE; |
| 7976 | } else { |
| 7977 | return PSA_JPAKE_STEP_INVALID; |
Przemek Stekiel | b09c487 | 2023-01-17 12:05:38 +0100 | [diff] [blame] | 7978 | } |
Agathiyan Bragadeesh | 387bfa5 | 2023-07-17 17:01:33 +0100 | [diff] [blame] | 7979 | 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] | 7980 | } |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 7981 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | b09c487 | 2023-01-17 12:05:38 +0100 | [diff] [blame] | 7982 | |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 7983 | static psa_status_t psa_pake_complete_inputs( |
| 7984 | psa_pake_operation_t *operation) |
| 7985 | { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 7986 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 18620a3 | 2023-01-17 16:34:52 +0100 | [diff] [blame] | 7987 | /* Create copy of the inputs on stack as inputs share memory |
| 7988 | with the driver context which will be setup by the driver. */ |
| 7989 | psa_crypto_driver_pake_inputs_t inputs = operation->data.inputs; |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 7990 | |
Przemek Stekiel | fde1128 | 2023-03-13 16:06:09 +0100 | [diff] [blame] | 7991 | if (inputs.password_len == 0) { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 7992 | return PSA_ERROR_BAD_STATE; |
| 7993 | } |
| 7994 | |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 7995 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | fde1128 | 2023-03-13 16:06:09 +0100 | [diff] [blame] | 7996 | if (inputs.user_len == 0 || inputs.peer_len == 0) { |
| 7997 | return PSA_ERROR_BAD_STATE; |
| 7998 | } |
Przemek Stekiel | dff21d3 | 2023-02-14 20:09:10 +0100 | [diff] [blame] | 7999 | } |
| 8000 | |
Przemek Stekiel | 18620a3 | 2023-01-17 16:34:52 +0100 | [diff] [blame] | 8001 | /* Clear driver context */ |
| 8002 | mbedtls_platform_zeroize(&operation->data, sizeof(operation->data)); |
| 8003 | |
| 8004 | status = psa_driver_wrapper_pake_setup(operation, &inputs); |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8005 | |
| 8006 | /* Driver is responsible for creating its own copy of the password. */ |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 8007 | mbedtls_zeroize_and_free(inputs.password, inputs.password_len); |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8008 | |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8009 | /* User and peer are translated to role. */ |
| 8010 | mbedtls_free(inputs.user); |
| 8011 | mbedtls_free(inputs.peer); |
| 8012 | |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8013 | if (status == PSA_SUCCESS) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8014 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8015 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | d93de32 | 2023-02-24 08:39:04 +0100 | [diff] [blame] | 8016 | operation->stage = PSA_PAKE_OPERATION_STAGE_COMPUTATION; |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8017 | } else |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8018 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8019 | { |
| 8020 | status = PSA_ERROR_NOT_SUPPORTED; |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8021 | } |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8022 | } |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8023 | return status; |
| 8024 | } |
| 8025 | |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8026 | #if defined(PSA_WANT_ALG_JPAKE) |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8027 | static psa_status_t psa_jpake_prologue( |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8028 | psa_pake_operation_t *operation, |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8029 | psa_pake_step_t step, |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8030 | psa_jpake_io_mode_t io_mode) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8031 | { |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8032 | if (step != PSA_PAKE_STEP_KEY_SHARE && |
| 8033 | step != PSA_PAKE_STEP_ZK_PUBLIC && |
| 8034 | step != PSA_PAKE_STEP_ZK_PROOF) { |
| 8035 | return PSA_ERROR_INVALID_ARGUMENT; |
| 8036 | } |
| 8037 | |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8038 | psa_jpake_computation_stage_t *computation_stage = |
| 8039 | &operation->computation_stage.jpake; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8040 | |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8041 | if (computation_stage->round != PSA_JPAKE_FIRST && |
| 8042 | computation_stage->round != PSA_JPAKE_SECOND) { |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8043 | return PSA_ERROR_BAD_STATE; |
| 8044 | } |
| 8045 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8046 | /* Check that the step we are given is the one we were expecting */ |
| 8047 | if (step != computation_stage->step) { |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8048 | return PSA_ERROR_BAD_STATE; |
| 8049 | } |
| 8050 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8051 | if (step == PSA_PAKE_STEP_KEY_SHARE && |
| 8052 | computation_stage->inputs == 0 && |
| 8053 | computation_stage->outputs == 0) { |
| 8054 | /* Start of the round, so function decides whether we are inputting |
| 8055 | * or outputting */ |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 8056 | computation_stage->io_mode = io_mode; |
| 8057 | } else if (computation_stage->io_mode != io_mode) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8058 | /* Middle of the round so the mode we are in must match the function |
| 8059 | * called by the user */ |
| 8060 | return PSA_ERROR_BAD_STATE; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8061 | } |
| 8062 | |
| 8063 | return PSA_SUCCESS; |
| 8064 | } |
| 8065 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8066 | static psa_status_t psa_jpake_epilogue( |
| 8067 | psa_pake_operation_t *operation, |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8068 | psa_jpake_io_mode_t io_mode) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8069 | { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8070 | psa_jpake_computation_stage_t *stage = |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8071 | &operation->computation_stage.jpake; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8072 | |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8073 | if (stage->step == PSA_PAKE_STEP_ZK_PROOF) { |
| 8074 | /* End of an input/output */ |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8075 | if (io_mode == PSA_JPAKE_INPUT) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8076 | stage->inputs++; |
David Horstmann | 246ec5a | 2023-06-27 10:33:06 +0100 | [diff] [blame] | 8077 | if (stage->inputs == PSA_JPAKE_EXPECTED_INPUTS(stage->round)) { |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 8078 | stage->io_mode = PSA_JPAKE_OUTPUT; |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8079 | } |
| 8080 | } |
David Horstmann | 00ad6bf | 2023-06-14 15:44:24 +0100 | [diff] [blame] | 8081 | if (io_mode == PSA_JPAKE_OUTPUT) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8082 | stage->outputs++; |
David Horstmann | 246ec5a | 2023-06-27 10:33:06 +0100 | [diff] [blame] | 8083 | if (stage->outputs == PSA_JPAKE_EXPECTED_OUTPUTS(stage->round)) { |
David Horstmann | 024e5c5 | 2023-06-14 15:48:21 +0100 | [diff] [blame] | 8084 | stage->io_mode = PSA_JPAKE_INPUT; |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8085 | } |
| 8086 | } |
David Horstmann | 246ec5a | 2023-06-27 10:33:06 +0100 | [diff] [blame] | 8087 | if (stage->inputs == PSA_JPAKE_EXPECTED_INPUTS(stage->round) && |
| 8088 | stage->outputs == PSA_JPAKE_EXPECTED_OUTPUTS(stage->round)) { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8089 | /* End of a round, move to the next round */ |
| 8090 | stage->inputs = 0; |
| 8091 | stage->outputs = 0; |
| 8092 | stage->round++; |
| 8093 | } |
| 8094 | stage->step = PSA_PAKE_STEP_KEY_SHARE; |
Przemek Stekiel | 5eff103 | 2023-02-21 19:10:36 +0100 | [diff] [blame] | 8095 | } else { |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8096 | stage->step++; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8097 | } |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8098 | return PSA_SUCCESS; |
| 8099 | } |
David Horstmann | e7f21e6 | 2023-05-12 18:17:21 +0100 | [diff] [blame] | 8100 | |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8101 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8102 | |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8103 | psa_status_t psa_pake_output( |
| 8104 | psa_pake_operation_t *operation, |
| 8105 | psa_pake_step_t step, |
| 8106 | uint8_t *output, |
| 8107 | size_t output_size, |
| 8108 | size_t *output_length) |
| 8109 | { |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8110 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8111 | psa_crypto_driver_pake_step_t driver_step = PSA_JPAKE_STEP_INVALID; |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 8112 | *output_length = 0; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8113 | |
| 8114 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8115 | status = psa_pake_complete_inputs(operation); |
| 8116 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8117 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8118 | } |
| 8119 | } |
| 8120 | |
| 8121 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8122 | status = PSA_ERROR_BAD_STATE; |
| 8123 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8124 | } |
| 8125 | |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 8126 | if (output_size == 0) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8127 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8128 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8129 | } |
| 8130 | |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8131 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8132 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8133 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8134 | status = psa_jpake_prologue(operation, step, PSA_JPAKE_OUTPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8135 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8136 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8137 | } |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8138 | driver_step = convert_jpake_computation_stage_to_driver_step( |
| 8139 | &operation->computation_stage.jpake); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8140 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8141 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8142 | default: |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8143 | (void) step; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8144 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8145 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8146 | } |
| 8147 | |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8148 | status = psa_driver_wrapper_pake_output(operation, driver_step, |
| 8149 | output, output_size, output_length); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8150 | |
| 8151 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8152 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8153 | } |
| 8154 | |
| 8155 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8156 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8157 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8158 | status = psa_jpake_epilogue(operation, PSA_JPAKE_OUTPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8159 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8160 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8161 | } |
| 8162 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8163 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8164 | default: |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8165 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8166 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8167 | } |
| 8168 | |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8169 | return PSA_SUCCESS; |
| 8170 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8171 | psa_pake_abort(operation); |
| 8172 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8173 | } |
| 8174 | |
| 8175 | psa_status_t psa_pake_input( |
| 8176 | psa_pake_operation_t *operation, |
| 8177 | psa_pake_step_t step, |
| 8178 | const uint8_t *input, |
| 8179 | size_t input_length) |
| 8180 | { |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8181 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8182 | psa_crypto_driver_pake_step_t driver_step = PSA_JPAKE_STEP_INVALID; |
Przemek Stekiel | 256c75d | 2023-03-23 14:09:34 +0100 | [diff] [blame] | 8183 | const size_t max_input_length = (size_t) PSA_PAKE_INPUT_SIZE(operation->alg, |
| 8184 | operation->primitive, |
| 8185 | step); |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8186 | |
| 8187 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
Przemek Stekiel | 2797d37 | 2022-12-22 11:19:22 +0100 | [diff] [blame] | 8188 | status = psa_pake_complete_inputs(operation); |
| 8189 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8190 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8191 | } |
| 8192 | } |
| 8193 | |
| 8194 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8195 | status = PSA_ERROR_BAD_STATE; |
| 8196 | goto exit; |
Przemek Stekiel | 51eac53 | 2022-12-07 11:04:51 +0100 | [diff] [blame] | 8197 | } |
| 8198 | |
Przemek Stekiel | 256c75d | 2023-03-23 14:09:34 +0100 | [diff] [blame] | 8199 | if (input_length == 0 || input_length > max_input_length) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8200 | status = PSA_ERROR_INVALID_ARGUMENT; |
| 8201 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8202 | } |
| 8203 | |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8204 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8205 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8206 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8207 | status = psa_jpake_prologue(operation, step, PSA_JPAKE_INPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8208 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8209 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8210 | } |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8211 | driver_step = convert_jpake_computation_stage_to_driver_step( |
| 8212 | &operation->computation_stage.jpake); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8213 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8214 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8215 | default: |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8216 | (void) step; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8217 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8218 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8219 | } |
| 8220 | |
Przemek Stekiel | 691e91a | 2023-03-07 16:26:37 +0100 | [diff] [blame] | 8221 | status = psa_driver_wrapper_pake_input(operation, driver_step, |
| 8222 | input, input_length); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8223 | |
| 8224 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8225 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8226 | } |
| 8227 | |
| 8228 | switch (operation->alg) { |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8229 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8230 | case PSA_ALG_JPAKE: |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8231 | status = psa_jpake_epilogue(operation, PSA_JPAKE_INPUT); |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8232 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8233 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8234 | } |
| 8235 | break; |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8236 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8237 | default: |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8238 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8239 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8240 | } |
| 8241 | |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8242 | return PSA_SUCCESS; |
| 8243 | exit: |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8244 | psa_pake_abort(operation); |
| 8245 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8246 | } |
| 8247 | |
| 8248 | psa_status_t psa_pake_get_implicit_key( |
| 8249 | psa_pake_operation_t *operation, |
| 8250 | psa_key_derivation_operation_t *output) |
| 8251 | { |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 8252 | psa_status_t status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8253 | psa_status_t abort_status = PSA_ERROR_CORRUPTION_DETECTED; |
Przemek Stekiel | 251e86a | 2023-02-17 14:30:50 +0100 | [diff] [blame] | 8254 | uint8_t shared_key[MBEDTLS_PSA_JPAKE_BUFFER_SIZE]; |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 8255 | size_t shared_key_len = 0; |
| 8256 | |
Przemek Stekiel | f62b3bb | 2023-01-31 19:51:24 +0100 | [diff] [blame] | 8257 | if (operation->stage != PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8258 | status = PSA_ERROR_BAD_STATE; |
| 8259 | goto exit; |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8260 | } |
| 8261 | |
Przemek Stekiel | 4aa9940 | 2023-02-27 13:00:57 +0100 | [diff] [blame] | 8262 | #if defined(PSA_WANT_ALG_JPAKE) |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8263 | if (operation->alg == PSA_ALG_JPAKE) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8264 | psa_jpake_computation_stage_t *computation_stage = |
Przemek Stekiel | 083745e | 2023-02-23 17:28:23 +0100 | [diff] [blame] | 8265 | &operation->computation_stage.jpake; |
David Horstmann | 5da9560 | 2023-06-08 15:37:12 +0100 | [diff] [blame] | 8266 | if (computation_stage->round != PSA_JPAKE_FINISHED) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8267 | status = PSA_ERROR_BAD_STATE; |
| 8268 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8269 | } |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8270 | } else |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8271 | #endif /* PSA_WANT_ALG_JPAKE */ |
Przemek Stekiel | 80a8849 | 2023-02-20 13:32:22 +0100 | [diff] [blame] | 8272 | { |
| 8273 | status = PSA_ERROR_NOT_SUPPORTED; |
| 8274 | goto exit; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8275 | } |
| 8276 | |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 8277 | status = psa_driver_wrapper_pake_get_implicit_key(operation, |
| 8278 | shared_key, |
Przemek Stekiel | 6b64862 | 2023-02-19 22:55:33 +0100 | [diff] [blame] | 8279 | sizeof(shared_key), |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 8280 | &shared_key_len); |
| 8281 | |
| 8282 | if (status != PSA_SUCCESS) { |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8283 | goto exit; |
Przemek Stekiel | 0c78180 | 2022-11-29 14:53:13 +0100 | [diff] [blame] | 8284 | } |
| 8285 | |
| 8286 | status = psa_key_derivation_input_bytes(output, |
| 8287 | PSA_KEY_DERIVATION_INPUT_SECRET, |
| 8288 | shared_key, |
| 8289 | shared_key_len); |
| 8290 | |
Przemek Stekiel | e3ef3a1 | 2023-02-27 10:20:06 +0100 | [diff] [blame] | 8291 | mbedtls_platform_zeroize(shared_key, sizeof(shared_key)); |
Przemek Stekiel | 3e784d8 | 2023-02-08 09:12:42 +0100 | [diff] [blame] | 8292 | exit: |
| 8293 | abort_status = psa_pake_abort(operation); |
| 8294 | return status == PSA_SUCCESS ? abort_status : status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8295 | } |
| 8296 | |
| 8297 | psa_status_t psa_pake_abort( |
| 8298 | psa_pake_operation_t *operation) |
| 8299 | { |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 8300 | psa_status_t status = PSA_SUCCESS; |
Przemek Stekiel | e12ed36 | 2022-12-21 12:54:46 +0100 | [diff] [blame] | 8301 | |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 8302 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COMPUTATION) { |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 8303 | status = psa_driver_wrapper_pake_abort(operation); |
Neil Armstrong | 5ae6096 | 2022-09-15 11:29:46 +0200 | [diff] [blame] | 8304 | } |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 8305 | |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8306 | if (operation->stage == PSA_PAKE_OPERATION_STAGE_COLLECT_INPUTS) { |
| 8307 | if (operation->data.inputs.password != NULL) { |
Tom Cosgrove | ca8c61b | 2023-07-17 15:17:40 +0100 | [diff] [blame] | 8308 | mbedtls_zeroize_and_free(operation->data.inputs.password, |
Przemek Stekiel | aa18342 | 2023-03-06 14:21:44 +0100 | [diff] [blame] | 8309 | operation->data.inputs.password_len); |
Przemek Stekiel | 26c909d | 2023-02-28 12:34:03 +0100 | [diff] [blame] | 8310 | } |
| 8311 | if (operation->data.inputs.user != NULL) { |
| 8312 | mbedtls_free(operation->data.inputs.user); |
| 8313 | } |
| 8314 | if (operation->data.inputs.peer != NULL) { |
| 8315 | mbedtls_free(operation->data.inputs.peer); |
| 8316 | } |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 8317 | } |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 8318 | memset(operation, 0, sizeof(psa_pake_operation_t)); |
Przemek Stekiel | 9a5b812 | 2022-12-22 13:34:47 +0100 | [diff] [blame] | 8319 | |
Przemek Stekiel | d69dca9 | 2023-01-31 19:59:20 +0100 | [diff] [blame] | 8320 | return status; |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8321 | } |
Tom Cosgrove | 6d62fac | 2023-05-10 14:40:05 +0100 | [diff] [blame] | 8322 | #endif /* PSA_WANT_ALG_SOME_PAKE */ |
Neil Armstrong | a7d08c3 | 2022-06-01 18:21:20 +0200 | [diff] [blame] | 8323 | |
Gilles Peskine | e59236f | 2018-01-27 23:32:46 +0100 | [diff] [blame] | 8324 | #endif /* MBEDTLS_PSA_CRYPTO_C */ |