| Configuration file split |
| ======================== |
| |
| ## Why split the configuration file? |
| |
| The objective of the repository split is to reach the point where in Mbed TLS |
| all the cryptography code and its tests are located in a `tf-psa-crypto` |
| directory that just contains the TF-PSA-Crypto repository as a submodule. |
| The cryptography APIs exposed by Mbed TLS are just the TF-PSA-Crypto ones. |
| Mbed TLS relies solely on the TF-PSA-Crypto build system to build its |
| cryptography library and its tests. |
| |
| The TF-PSA-Crypto configuration file `tf_psa_crypto_config.h` configures |
| entirely the cryptography interface exposed by Mbed TLS through TF-PSA-Crypto. |
| Mbed TLS configuration is split in two files: `mbedtls_config.h` for TLS and |
| x509, `tf_psa_crypto_config.h` for the cryptography. |
| |
| ## How do we split the configuration file? |
| |
| We extend the so-called PSA cryptographic configuration scheme based on |
| `mbedtls_config.h` and `crypto_config.h`. The configuration file `crypto_config.h` |
| is extended to become the TF-PSA-Crypto configuration file, `mbedtls_config.h` |
| becomes the configuration file for the TLS and x509 libraries. All the options |
| to select the cryptographic mechanisms and to configure their implementation |
| are moved from `mbedtls_config.h` to `(tf_psa_)crypto_config.h`. |
| |
| The configuration options that are relevant to both Mbed TLS and TF-PSA-Crypto |
| like platform or system ones are moved to `(tf_psa_)crypto_config.h`. That way |
| they are available in both repositories (as Mbed TLS includes |
| `tf_psa_crypto_config.h`) without duplication. Later, we may duplicate or |
| create aliases for some of them to align with the naming conventions of the |
| repositories. |
| |
| The cryptographic configuration options in `tf_psa_crypto_config.h` are |
| organized into sections that are different from the ones in the pre-split |
| `mbedtls_config.h` (see below). This is first to take into account the |
| specifics of TF-PSA-Crypto, for example a specific section for the |
| configuration of builtin drivers. We also get rid of the grouping of non |
| boolean options into a dedicated section: related boolean and non boolean |
| configuration options are rather grouped together into the same section. |
| |
| Finally, for consistency, the sections in `mbedtls_config.h` are reorganized |
| to be better aligned with the `tf_psa_crypto_config.h` ones. |
| |
| |
| ## Configuration files and `config.py` |
| |
| Each repository contains a `config.py` script to create and modify |
| configurations. |
| |
| In Mbed TLS, `config.py` handles both `mbedtls_config.h` and |
| `tf_psa_crypto_config.h`. It can set or unset TLS, x509 and cryptographic |
| configuration options without having to specify the configuration file the |
| options belong to. Commands like full and baremetal affect both configuration |
| files. |
| |
| In TF-PSA-Crypto, `config.py` addresses only `tf_psa_crypto_config.h`. |
| |
| ## Sections in `tf_psa_crypto_config.h` |
| |
| The `tf_psa_crypto_config.h` configuration file is organized into eight |
| sections. |
| |
| The pre-split `mbedtls_config.h` configuration file contains configuration |
| options that apply to the whole code base (TLS, x509, crypto and tests) mostly |
| related to the platform abstraction layer and testing. In |
| `tf_psa_crypto_config.h` these configurations options are organized into two |
| sections, one for the platform abstraction layer options and one for the others, |
| respectively named ["Platform abstraction layer"](#section-platform-abstraction-layer) |
| and ["General and test configuration options"](#section-general-and-test-configuration-options). |
| |
| Then, the ["Cryptographic mechanism selection (PSA API)"](#section-cryptographic-mechanism-selection-PSA-API) |
| section is the equivalent of the pre-split `crypto_config.h` configuration file |
| containing the PSA_WANT_ prefixed macros. |
| |
| The following section named |
| ["Cryptographic mechanism selection (extended API)"](#section-cryptographic-mechanism-selection-extended-API) |
| contains the configuration options for the cryptography mechanisms that are not |
| yet part of the PSA cryptography API (like LMS or PK). |
| |
| It is followed by the ["Data format support"](#section-data-format-support) |
| section that contains configuration options of utilities related to various data |
| formats (like Base64 or ASN.1 APIs). These utilities aim to facilitate the |
| usage of the PSA cryptography API in other cryptography projects. |
| |
| Compared to Mbed TLS, the cryptography code in TF-PSA-Crypto is not located |
| in a single directory but split between the PSA core (core directory) and the |
| PSA builtin drivers (drivers/builtin/src directory). This is reflected in |
| `tf_psa_crypto_config.h` with two sections respectively named ["PSA core"](#section-psa-core) |
| and ["Builtin drivers"](#section-builtin-drivers). |
| |
| Finally, the last section named ["Legacy cryptography"](#section-legacy-cryptography) |
| contains the configuration options that will eventually be removed as duplicates |
| of PSA_WANT_\* and MBEDTLS_PSA_ACCEL_\* configuration options. |
| |
| ## Sections in `mbedtls_config.h` |
| |
| The sections in `mbedtls_config.h` are reorganized to be better aligned with |
| the ones in `tf_psa_crypto_config.h`. The main change is the reorganization |
| of the "Mbed TLS modules", "Mbed TLS feature support" and |
| "Module configuration options" sections into the |
| ["TLS feature selection"](#section-tls-feature-selection) and |
| ["X.509 feature selection"](#section-x-509-feature-selection) sections. That |
| way all TLS/x509 options are grouped into one section and there is no |
| section dedicated to non boolean configuration options anymore. |
| |
| |
| ## Repartition of the configuration options |
| |
| ### In `tf_psa_crypto_config.h`, we have: |
| #### SECTION Platform abstraction layer |
| ``` |
| #define MBEDTLS_FS_IO |
| #define MBEDTLS_HAVE_TIME |
| #define MBEDTLS_HAVE_TIME_DATE |
| //#define MBEDTLS_MEMORY_BACKTRACE |
| //#define MBEDTLS_MEMORY_BUFFER_ALLOC_C |
| //#define MBEDTLS_MEMORY_DEBUG |
| #define MBEDTLS_PLATFORM_C |
| //#define MBEDTLS_PLATFORM_EXIT_ALT |
| //#define MBEDTLS_PLATFORM_FPRINTF_ALT |
| //#define MBEDTLS_PLATFORM_GMTIME_R_ALT |
| //#define MBEDTLS_PLATFORM_MEMORY |
| //#define MBEDTLS_PLATFORM_MS_TIME_ALT |
| //#define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS |
| //#define MBEDTLS_PLATFORM_NV_SEED_ALT |
| //#define MBEDTLS_PLATFORM_PRINTF_ALT |
| //#define MBEDTLS_PLATFORM_SETBUF_ALT |
| //#define MBEDTLS_PLATFORM_SETUP_TEARDOWN_ALT |
| //#define MBEDTLS_PLATFORM_SNPRINTF_ALT |
| //#define MBEDTLS_PLATFORM_TIME_ALT |
| //#define MBEDTLS_PLATFORM_VSNPRINTF_ALT |
| //#define MBEDTLS_PLATFORM_ZEROIZE_ALT |
| //#define MBEDTLS_THREADING_ALT |
| //#define MBEDTLS_THREADING_C |
| //#define MBEDTLS_THREADING_PTHREAD |
| |
| //#define MBEDTLS_MEMORY_ALIGN_MULTIPLE 4 |
| //#define MBEDTLS_PLATFORM_CALLOC_MACRO calloc |
| //#define MBEDTLS_PLATFORM_EXIT_MACRO exit |
| //#define MBEDTLS_PLATFORM_FREE_MACRO free |
| //#define MBEDTLS_PLATFORM_FPRINTF_MACRO fprintf |
| //#define MBEDTLS_PLATFORM_MS_TIME_TYPE_MACRO int64_t |
| //#define MBEDTLS_PLATFORM_NV_SEED_READ_MACRO mbedtls_platform_std_nv_seed_read |
| //#define MBEDTLS_PLATFORM_NV_SEED_WRITE_MACRO mbedtls_platform_std_nv_seed_write |
| //#define MBEDTLS_PLATFORM_PRINTF_MACRO printf |
| //#define MBEDTLS_PLATFORM_SETBUF_MACRO setbuf |
| //#define MBEDTLS_PLATFORM_SNPRINTF_MACRO snprintf |
| //#define MBEDTLS_PLATFORM_STD_CALLOC calloc |
| //#define MBEDTLS_PLATFORM_STD_EXIT exit |
| //#define MBEDTLS_PLATFORM_STD_EXIT_FAILURE 1 |
| //#define MBEDTLS_PLATFORM_STD_EXIT_SUCCESS 0 |
| //#define MBEDTLS_PLATFORM_STD_FPRINTF fprintf |
| //#define MBEDTLS_PLATFORM_STD_FREE free |
| //#define MBEDTLS_PLATFORM_STD_MEM_HDR <stdlib.h> |
| //#define MBEDTLS_PLATFORM_STD_NV_SEED_FILE "seedfile" |
| //#define MBEDTLS_PLATFORM_STD_NV_SEED_READ mbedtls_platform_std_nv_seed_read |
| //#define MBEDTLS_PLATFORM_STD_NV_SEED_WRITE mbedtls_platform_std_nv_seed_write |
| //#define MBEDTLS_PLATFORM_STD_PRINTF printf |
| //#define MBEDTLS_PLATFORM_STD_SETBUF setbuf |
| //#define MBEDTLS_PLATFORM_STD_SNPRINTF snprintf |
| //#define MBEDTLS_PLATFORM_STD_TIME time |
| //#define MBEDTLS_PLATFORM_TIME_MACRO time |
| //#define MBEDTLS_PLATFORM_TIME_TYPE_MACRO time_t |
| //#define MBEDTLS_PLATFORM_VSNPRINTF_MACRO vsnprintf |
| //#define MBEDTLS_PRINTF_MS_TIME PRId64 |
| ``` |
| |
| #### SECTION General and test configuration options |
| Note: for consistency with the configuration file name change from |
| `crypto_config.h` to `tf_psa_crypto_config.h`, the configuration options |
| `MBEDTLS_PSA_CRYPTO_CONFIG_FILE` and `MBEDTLS_PSA_CRYPTO_USER_CONFIG_FILE` are |
| respectively renamed `TF_PSA_CRYPTO_CONFIG_FILE` and |
| `TF_PSA_CRYPTO_USER_CONFIG_FILE`. These are the only configuration options |
| renamed by this document. |
| ``` |
| //#define MBEDTLS_CHECK_RETURN_WARNING |
| //#define MBEDTLS_DEPRECATED_REMOVED |
| //#define MBEDTLS_DEPRECATED_WARNING |
| #define MBEDTLS_SELF_TEST |
| //#define MBEDTLS_TEST_CONSTANT_FLOW_MEMSAN |
| //#define MBEDTLS_TEST_CONSTANT_FLOW_VALGRIND |
| //#define MBEDTLS_TEST_HOOKS |
| |
| //#define MBEDTLS_CHECK_RETURN __attribute__((__warn_unused_result__)) |
| //#define MBEDTLS_IGNORE_RETURN( result ) ((void) !(result)) |
| //#define TF_PSA_CRYPTO_CONFIG_FILE "psa/tf_psa_crypto_config.h" |
| //#define TF_PSA_CRYPTO_USER_CONFIG_FILE "/dev/null" |
| ``` |
| |
| #### SECTION Cryptographic mechanism selection (PSA API) |
| PSA_WANT_\* macros as in current `crypto_config.h`. |
| |
| |
| #### SECTION Cryptographic mechanism selection (extended API) |
| ``` |
| #define MBEDTLS_LMS_C |
| //#define MBEDTLS_LMS_PRIVATE |
| #define MBEDTLS_MD_C |
| #define MBEDTLS_NIST_KW_C |
| #define MBEDTLS_PKCS5_C |
| #define MBEDTLS_PKCS12_C |
| #define MBEDTLS_PK_C |
| #define MBEDTLS_PK_PARSE_C |
| #define MBEDTLS_PK_PARSE_EC_COMPRESSED |
| #define MBEDTLS_PK_PARSE_EC_EXTENDED |
| #define MBEDTLS_PK_RSA_ALT_SUPPORT |
| #define MBEDTLS_PK_WRITE_C |
| |
| //#define MBEDTLS_CTR_DRBG_ENTROPY_LEN 48 |
| //#define MBEDTLS_CTR_DRBG_MAX_INPUT 256 |
| //#define MBEDTLS_CTR_DRBG_MAX_REQUEST 1024 |
| //#define MBEDTLS_CTR_DRBG_MAX_SEED_INPUT 384 |
| //#define MBEDTLS_CTR_DRBG_RESEED_INTERVAL 10000 |
| //#define MBEDTLS_HMAC_DRBG_MAX_INPUT 256 |
| //#define MBEDTLS_HMAC_DRBG_MAX_REQUEST 1024 |
| //#define MBEDTLS_HMAC_DRBG_MAX_SEED_INPUT 384 |
| //#define MBEDTLS_HMAC_DRBG_RESEED_INTERVAL 10000 |
| //#define MBEDTLS_PSA_HMAC_DRBG_MD_TYPE MBEDTLS_MD_SHA256 |
| ``` |
| |
| |
| #### SECTION Data format support |
| ``` |
| #define MBEDTLS_ASN1_PARSE_C |
| #define MBEDTLS_ASN1_WRITE_C |
| #define MBEDTLS_BASE64_C |
| #define MBEDTLS_OID_C |
| #define MBEDTLS_PEM_PARSE_C |
| #define MBEDTLS_PEM_WRITE_C |
| ``` |
| |
| |
| #### SECTION PSA core |
| ``` |
| #define MBEDTLS_ENTROPY_C |
| //#define MBEDTLS_ENTROPY_FORCE_SHA256 |
| //#define MBEDTLS_ENTROPY_HARDWARE_ALT |
| //#define MBEDTLS_ENTROPY_NV_SEED |
| //#define MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES |
| //#define MBEDTLS_NO_PLATFORM_ENTROPY |
| //#define MBEDTLS_PSA_ASSUME_EXCLUSIVE_BUFFERS |
| //#define MBEDTLS_PSA_CRYPTO_BUILTIN_KEYS |
| #define MBEDTLS_PSA_CRYPTO_C |
| //#define MBEDTLS_PSA_CRYPTO_CLIENT |
| //#define MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG |
| //#define MBEDTLS_PSA_CRYPTO_KEY_ID_ENCODES_OWNER |
| //#define MBEDTLS_PSA_CRYPTO_SPM |
| #define MBEDTLS_PSA_CRYPTO_STORAGE_C |
| //#define MBEDTLS_PSA_INJECT_ENTROPY |
| #define MBEDTLS_PSA_ITS_FILE_C |
| #define MBEDTLS_PSA_KEY_STORE_DYNAMIC |
| //#define MBEDTLS_PSA_STATIC_KEY_SLOTS |
| |
| //#define MBEDTLS_ENTROPY_MAX_GATHER 128 |
| //#define MBEDTLS_ENTROPY_MAX_SOURCES 20 |
| //#define MBEDTLS_ENTROPY_MIN_HARDWARE 32 |
| //#define MBEDTLS_PSA_CRYPTO_PLATFORM_FILE "psa/crypto_platform_alt.h" |
| //#define MBEDTLS_PSA_CRYPTO_STRUCT_FILE "psa/crypto_struct_alt.h" |
| //#define MBEDTLS_PSA_KEY_SLOT_COUNT 32 |
| //#define MBEDTLS_PSA_STATIC_KEY_SLOT_BUFFER_SIZE 256 |
| ``` |
| |
| #### SECTION Builtin drivers |
| ``` |
| #define MBEDTLS_AESCE_C |
| #define MBEDTLS_AESNI_C |
| //#define MBEDTLS_AES_FEWER_TABLES |
| //#define MBEDTLS_AES_ONLY_128_BIT_KEY_LENGTH |
| //#define MBEDTLS_AES_ROM_TABLES |
| //#define MBEDTLS_AES_USE_HARDWARE_ONLY |
| //#define MBEDTLS_BLOCK_CIPHER_NO_DECRYPT |
| //#define MBEDTLS_CAMELLIA_SMALL_MEMORY |
| //#define MBEDTLS_ECDH_VARIANT_EVEREST_ENABLED |
| #define MBEDTLS_ECP_NIST_OPTIM |
| //#define MBEDTLS_ECP_RESTARTABLE |
| //#define MBEDTLS_ECP_WITH_MPI_UINT |
| //#define MBEDTLS_GCM_LARGE_TABLE |
| #define MBEDTLS_HAVE_ASM |
| //#define MBEDTLS_HAVE_SSE2 |
| //#define MBEDTLS_NO_UDBL_DIVISION |
| //#define MBEDTLS_NO_64BIT_MULTIPLICATION |
| //#define MBEDTLS_PSA_P256M_DRIVER_ENABLED |
| //#define MBEDTLS_RSA_NO_CRT |
| //#define MBEDTLS_SHA256_SMALLER |
| //#define MBEDTLS_SHA256_USE_A64_CRYPTO_IF_PRESENT |
| //#define MBEDTLS_SHA256_USE_A64_CRYPTO_ONLY |
| //#define MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_IF_PRESENT |
| //#define MBEDTLS_SHA256_USE_ARMV8_A_CRYPTO_ONLY |
| //#define MBEDTLS_SHA512_SMALLER |
| //#define MBEDTLS_SHA512_USE_A64_CRYPTO_IF_PRESENT |
| //#define MBEDTLS_SHA512_USE_A64_CRYPTO_ONLY |
| |
| //#define MBEDTLS_ECP_FIXED_POINT_OPTIM 1 |
| //#define MBEDTLS_ECP_WINDOW_SIZE 4 |
| //#define MBEDTLS_MPI_MAX_SIZE 1024 |
| //#define MBEDTLS_MPI_WINDOW_SIZE 2 |
| //#define MBEDTLS_RSA_GEN_KEY_MIN_BITS 1024 |
| ``` |
| |
| |
| #### SECTION Legacy cryptography |
| ``` |
| #define MBEDTLS_AES_C |
| #define MBEDTLS_ARIA_C |
| #define MBEDTLS_BIGNUM_C |
| #define MBEDTLS_CAMELLIA_C |
| #define MBEDTLS_CCM_C |
| #define MBEDTLS_CHACHA20_C |
| #define MBEDTLS_CHACHAPOLY_C |
| #define MBEDTLS_CIPHER_C |
| #define MBEDTLS_CIPHER_MODE_CBC |
| #define MBEDTLS_CIPHER_MODE_CFB |
| #define MBEDTLS_CIPHER_MODE_CTR |
| #define MBEDTLS_CIPHER_MODE_OFB |
| #define MBEDTLS_CIPHER_MODE_XTS |
| //#define MBEDTLS_CIPHER_NULL_CIPHER |
| #define MBEDTLS_CIPHER_PADDING_ONE_AND_ZEROS |
| #define MBEDTLS_CIPHER_PADDING_PKCS7 |
| #define MBEDTLS_CIPHER_PADDING_ZEROS |
| #define MBEDTLS_CIPHER_PADDING_ZEROS_AND_LEN |
| #define MBEDTLS_CMAC_C |
| #define MBEDTLS_CTR_DRBG_C |
| //#define MBEDTLS_CTR_DRBG_USE_128_BIT_KEY |
| #define MBEDTLS_DES_C |
| #define MBEDTLS_DHM_C |
| #define MBEDTLS_ECDH_C |
| #define MBEDTLS_ECP_C |
| #define MBEDTLS_ECP_DP_BP256R1_ENABLED |
| #define MBEDTLS_ECP_DP_BP384R1_ENABLED |
| #define MBEDTLS_ECP_DP_BP512R1_ENABLED |
| #define MBEDTLS_ECP_DP_CURVE25519_ENABLED |
| #define MBEDTLS_ECP_DP_CURVE448_ENABLED |
| #define MBEDTLS_ECP_DP_SECP192K1_ENABLED |
| #define MBEDTLS_ECP_DP_SECP192R1_ENABLED |
| #define MBEDTLS_ECP_DP_SECP224K1_ENABLED |
| #define MBEDTLS_ECP_DP_SECP224R1_ENABLED |
| #define MBEDTLS_ECP_DP_SECP256K1_ENABLED |
| #define MBEDTLS_ECP_DP_SECP256R1_ENABLED |
| #define MBEDTLS_ECP_DP_SECP384R1_ENABLED |
| #define MBEDTLS_ECP_DP_SECP521R1_ENABLED |
| #define MBEDTLS_ECDSA_C |
| #define MBEDTLS_ECDSA_DETERMINISTIC |
| #define MBEDTLS_ECJPAKE_C |
| #define MBEDTLS_GCM_C |
| #define MBEDTLS_GENPRIME |
| #define MBEDTLS_HKDF_C |
| #define MBEDTLS_HMAC_DRBG_C |
| #define MBEDTLS_MD5_C |
| #define MBEDTLS_PADLOCK_C |
| #define MBEDTLS_PKCS1_V15 |
| #define MBEDTLS_PKCS1_V21 |
| #define MBEDTLS_POLY1305_C |
| //#define MBEDTLS_PSA_CRYPTO_SE_C |
| #define MBEDTLS_RIPEMD160_C |
| #define MBEDTLS_RSA_C |
| #define MBEDTLS_SHA1_C |
| #define MBEDTLS_SHA224_C |
| #define MBEDTLS_SHA256_C |
| #define MBEDTLS_SHA384_C |
| #define MBEDTLS_SHA3_C |
| #define MBEDTLS_SHA512_C |
| ``` |
| |
| |
| ### In `mbedtls_config.h`, we have: |
| #### SECTION Platform abstraction layer |
| ``` |
| #define MBEDTLS_NET_C |
| //#define MBEDTLS_TIMING_ALT |
| #define MBEDTLS_TIMING_C |
| ``` |
| |
| |
| #### SECTION General configuration options |
| ``` |
| #define MBEDTLS_ERROR_C |
| #define MBEDTLS_ERROR_STRERROR_DUMMY |
| #define MBEDTLS_VERSION_C |
| #define MBEDTLS_VERSION_FEATURES |
| |
| //#define MBEDTLS_CONFIG_FILE "mbedtls/mbedtls_config.h" |
| //#define MBEDTLS_USER_CONFIG_FILE "/dev/null" |
| ``` |
| |
| |
| #### SECTION TLS feature selection |
| ``` |
| #define MBEDTLS_DEBUG_C |
| #define MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED |
| //#define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED |
| #define MBEDTLS_KEY_EXCHANGE_RSA_ENABLED |
| #define MBEDTLS_SSL_ALL_ALERT_MESSAGES |
| #define MBEDTLS_SSL_ALPN |
| //#define MBEDTLS_SSL_ASYNC_PRIVATE |
| #define MBEDTLS_SSL_CACHE_C |
| #define MBEDTLS_SSL_CLI_C |
| #define MBEDTLS_SSL_CONTEXT_SERIALIZATION |
| #define MBEDTLS_SSL_COOKIE_C |
| //#define MBEDTLS_SSL_DEBUG_ALL |
| #define MBEDTLS_SSL_DTLS_ANTI_REPLAY |
| #define MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE |
| #define MBEDTLS_SSL_DTLS_CONNECTION_ID |
| #define MBEDTLS_SSL_DTLS_CONNECTION_ID_COMPAT 0 |
| #define MBEDTLS_SSL_DTLS_HELLO_VERIFY |
| //#define MBEDTLS_SSL_DTLS_SRTP |
| //#define MBEDTLS_SSL_EARLY_DATA |
| #define MBEDTLS_SSL_ENCRYPT_THEN_MAC |
| #define MBEDTLS_SSL_EXTENDED_MASTER_SECRET |
| #define MBEDTLS_SSL_KEEP_PEER_CERTIFICATE |
| #define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH |
| #define MBEDTLS_SSL_PROTO_DTLS |
| #define MBEDTLS_SSL_PROTO_TLS1_2 |
| #define MBEDTLS_SSL_PROTO_TLS1_3 |
| //#define MBEDTLS_SSL_RECORD_SIZE_LIMIT |
| #define MBEDTLS_SSL_RENEGOTIATION |
| #define MBEDTLS_SSL_SERVER_NAME_INDICATION |
| #define MBEDTLS_SSL_SESSION_TICKETS |
| #define MBEDTLS_SSL_SRV_C |
| #define MBEDTLS_SSL_TICKET_C |
| #define MBEDTLS_SSL_TLS1_3_COMPATIBILITY_MODE |
| #define MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_EPHEMERAL_ENABLED |
| #define MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_ENABLED |
| #define MBEDTLS_SSL_TLS1_3_KEY_EXCHANGE_MODE_PSK_EPHEMERAL_ENABLED |
| #define MBEDTLS_SSL_TLS_C |
| //#define MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH |
| |
| //#define MBEDTLS_PSK_MAX_LEN 32 |
| //#define MBEDTLS_SSL_CACHE_DEFAULT_MAX_ENTRIES 50 |
| //#define MBEDTLS_SSL_CACHE_DEFAULT_TIMEOUT 86400 |
| //#define MBEDTLS_SSL_CID_IN_LEN_MAX 32 |
| //#define MBEDTLS_SSL_CID_OUT_LEN_MAX 32 |
| //#define MBEDTLS_SSL_CID_TLS1_3_PADDING_GRANULARITY 16 |
| //#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 |
| //#define MBEDTLS_SSL_COOKIE_TIMEOUT 60 |
| //#define MBEDTLS_SSL_DTLS_MAX_BUFFERING 32768 |
| //#define MBEDTLS_SSL_IN_CONTENT_LEN 16384 |
| //#define MBEDTLS_SSL_MAX_EARLY_DATA_SIZE 1024 |
| //#define MBEDTLS_SSL_OUT_CONTENT_LEN 16384 |
| //#define MBEDTLS_SSL_TLS1_3_DEFAULT_NEW_SESSION_TICKETS 1 |
| //#define MBEDTLS_SSL_TLS1_3_TICKET_AGE_TOLERANCE 6000 |
| //#define MBEDTLS_SSL_TLS1_3_TICKET_NONCE_LENGTH 32 |
| ``` |
| |
| |
| #### SECTION X.509 feature selection |
| ``` |
| #define MBEDTLS_PKCS7_C |
| #define MBEDTLS_X509_CREATE_C |
| #define MBEDTLS_X509_CRL_PARSE_C |
| #define MBEDTLS_X509_CRT_PARSE_C |
| #define MBEDTLS_X509_CRT_WRITE_C |
| #define MBEDTLS_X509_CSR_PARSE_C |
| #define MBEDTLS_X509_CSR_WRITE_C |
| //#define MBEDTLS_X509_REMOVE_INFO |
| #define MBEDTLS_X509_RSASSA_PSS_SUPPORT |
| //#define MBEDTLS_X509_TRUSTED_CERTIFICATE_CALLBACK |
| #define MBEDTLS_X509_USE_C |
| |
| //#define MBEDTLS_X509_MAX_FILE_PATH_LEN 512 |
| //#define MBEDTLS_X509_MAX_INTERMEDIATE_CA 8 |
| ``` |