| /** |
| * \file config-ccm-psk-dtls1_2.h |
| * |
| * \brief Small configuration for DTLS 1.2 with PSK and AES-CCM ciphersuites |
| */ |
| /* |
| * Copyright The Mbed TLS Contributors |
| * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later |
| */ |
| /* |
| * Minimal configuration for DTLS 1.2 with PSK and AES-CCM ciphersuites |
| * |
| * Distinguishing features: |
| * - Optimized for small code size, low bandwidth (on an unreliable transport), |
| * and low RAM usage. |
| * - No asymmetric cryptography (no certificates, no Diffie-Hellman key |
| * exchange). |
| * - Fully modern and secure (provided the pre-shared keys are generated and |
| * stored securely). |
| * - Very low record overhead with CCM-8. |
| * - Includes several optional DTLS features typically used in IoT. |
| * |
| * See README.txt for usage instructions. |
| */ |
| |
| /* System support */ |
| //#define MBEDTLS_HAVE_TIME /* Optionally used in Hello messages */ |
| /* Other MBEDTLS_HAVE_XXX flags irrelevant for this configuration */ |
| |
| /* Mbed TLS modules */ |
| #define MBEDTLS_AES_C |
| #define MBEDTLS_CCM_C |
| #define MBEDTLS_CIPHER_C |
| #define MBEDTLS_CTR_DRBG_C |
| #define MBEDTLS_ENTROPY_C |
| #define MBEDTLS_MD_C |
| #define MBEDTLS_NET_C |
| #define MBEDTLS_SHA256_C |
| #define MBEDTLS_SSL_CLI_C |
| #define MBEDTLS_SSL_COOKIE_C |
| #define MBEDTLS_SSL_SRV_C |
| #define MBEDTLS_SSL_TLS_C |
| #define MBEDTLS_TIMING_C |
| |
| /* TLS protocol feature support */ |
| #define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED |
| #define MBEDTLS_SSL_PROTO_TLS1_2 |
| #define MBEDTLS_SSL_PROTO_DTLS |
| #define MBEDTLS_SSL_DTLS_ANTI_REPLAY |
| #define MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE |
| #define MBEDTLS_SSL_DTLS_CONNECTION_ID |
| #define MBEDTLS_SSL_DTLS_HELLO_VERIFY |
| #define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH |
| |
| /* |
| * Use only CCM_8 ciphersuites, and |
| * save ROM and a few bytes of RAM by specifying our own ciphersuite list |
| */ |
| #define MBEDTLS_SSL_CIPHERSUITES \ |
| MBEDTLS_TLS_PSK_WITH_AES_256_CCM_8, \ |
| MBEDTLS_TLS_PSK_WITH_AES_128_CCM_8 |
| |
| /* |
| * Save RAM at the expense of interoperability: do this only if you control |
| * both ends of the connection! (See comments in "mbedtls/ssl.h".) |
| * The optimal size here depends on the typical size of records. |
| */ |
| #define MBEDTLS_SSL_IN_CONTENT_LEN 256 |
| #define MBEDTLS_SSL_OUT_CONTENT_LEN 256 |
| |
| /* Save RAM at the expense of ROM */ |
| #define MBEDTLS_AES_ROM_TABLES |
| |
| /* Save some RAM by adjusting to your exact needs */ |
| #define MBEDTLS_PSK_MAX_LEN 16 /* 128-bits keys are generally enough */ |
| |
| /* |
| * You should adjust this to the exact number of sources you're using: default |
| * is the "platform_entropy_poll" source, but you may want to add other ones |
| * Minimum is 2 for the entropy test suite. |
| */ |
| #define MBEDTLS_ENTROPY_MAX_SOURCES 2 |
| |
| /* These defines are present so that the config modifying scripts can enable |
| * them during tests/scripts/test-ref-configs.pl */ |
| //#define MBEDTLS_USE_PSA_CRYPTO |
| //#define MBEDTLS_PSA_CRYPTO_C |
| |
| /* Error messages and TLS debugging traces |
| * (huge code size increase, needed for tests/ssl-opt.sh) */ |
| //#define MBEDTLS_DEBUG_C |
| //#define MBEDTLS_ERROR_C |
