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Diffstat (limited to 'configs/config-ccm-psk-dtls1_2.h')
| -rw-r--r-- | configs/config-ccm-psk-dtls1_2.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/configs/config-ccm-psk-dtls1_2.h b/configs/config-ccm-psk-dtls1_2.h new file mode 100644 index 000000000..183815dec --- /dev/null +++ b/configs/config-ccm-psk-dtls1_2.h @@ -0,0 +1,108 @@ +/** + * \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 + * + * 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 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 +/* 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_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 |