| /** |
| * \file config-ccm-psk-tls1_2.h |
| * |
| * \brief Minimal configuration for TLS 1.2 with PSK and AES-CCM ciphersuites |
| */ |
| /* |
| * Copyright The Mbed TLS Contributors |
| * SPDX-License-Identifier: Apache-2.0 |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| /* |
| * Minimal configuration for TLS 1.2 with PSK and AES-CCM ciphersuites |
| * Distinguishing features: |
| * - no bignum, no PK, no X509 |
| * - fully modern and secure (provided the pre-shared keys have high entropy) |
| * - very low record overhead with CCM-8 |
| * - optimized for low RAM usage |
| * |
| * 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 feature support */ |
| #define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED |
| #define MBEDTLS_SSL_PROTO_TLS1_2 |
| |
| /* 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 |
| /* The library does not currently support enabling SHA-224 without SHA-256. |
| * A future version of the library will have this option disabled |
| * by default. */ |
| #define MBEDTLS_SHA224_C |
| #define MBEDTLS_SHA256_C |
| #define MBEDTLS_SSL_CLI_C |
| #define MBEDTLS_SSL_SRV_C |
| #define MBEDTLS_SSL_TLS_C |
| |
| /* 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 |
| |
| /* |
| * 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 1024 |
| #define MBEDTLS_SSL_OUT_CONTENT_LEN 1024 |
