configs/config-thread.h

/**
 * \file config-thread.h
 *
 * \brief Minimal configuration for using TLS as part of Thread
 */
/*
 *  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 using TLS a part of Thread
 * http://threadgroup.org/
 *
 * Distinguishing features:
 * - no RSA or classic DH, fully based on ECC
 * - no X.509
 * - support for experimental EC J-PAKE key exchange
 *
 * See README.txt for usage instructions.
 */

/* System support */
#define MBEDTLS_HAVE_ASM

/* mbed TLS feature support */
#define MBEDTLS_AES_ROM_TABLES
#define MBEDTLS_ECP_DP_SECP256R1_ENABLED
#define MBEDTLS_ECP_NIST_OPTIM
#define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
#define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
#define MBEDTLS_SSL_PROTO_TLS1_2
#define MBEDTLS_SSL_PROTO_DTLS
#define MBEDTLS_SSL_DTLS_ANTI_REPLAY
#define MBEDTLS_SSL_DTLS_HELLO_VERIFY

/* mbed TLS modules */
#define MBEDTLS_AES_C
#define MBEDTLS_ASN1_PARSE_C
#define MBEDTLS_ASN1_WRITE_C
#define MBEDTLS_BIGNUM_C
#define MBEDTLS_CCM_C
#define MBEDTLS_CIPHER_C
#define MBEDTLS_CTR_DRBG_C
#define MBEDTLS_CMAC_C
#define MBEDTLS_ECJPAKE_C
#define MBEDTLS_ECP_C
#define MBEDTLS_ENTROPY_C
#define MBEDTLS_HMAC_DRBG_C
#define MBEDTLS_MD_C
#define MBEDTLS_OID_C
#define MBEDTLS_PK_C
#define MBEDTLS_PK_PARSE_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_COOKIE_C
#define MBEDTLS_SSL_CLI_C
#define MBEDTLS_SSL_SRV_C
#define MBEDTLS_SSL_TLS_C

/* For tests using ssl-opt.sh */
#define MBEDTLS_NET_C
#define MBEDTLS_TIMING_C

/* Save RAM at the expense of ROM */
#define MBEDTLS_AES_ROM_TABLES

/* Save RAM by adjusting to our exact needs */
#define MBEDTLS_MPI_MAX_SIZE              32 // 256-bit EC curve = 32 bytes

/* Save ROM and a few bytes of RAM by specifying our own ciphersuite list */
#define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8