mbedtls/configs/config-ccm-psk-tls1_2.h

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/**
* \file config-ccm-psk-tls1_2.h
*
* \brief Minimal configuration for TLS 1.2 with PSK and AES-CCM ciphersuites
*/
/*
* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
*
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* 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
*
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* http://www.apache.org/licenses/LICENSE-2.0
*
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* 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.
*
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* This file is part of mbed TLS (https://tls.mbed.org)
*/
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/*
* Minimal configuration for TLS 1.2 with PSK and AES-CCM ciphersuites
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* 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
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* - optimized for low RAM usage
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*
* See README.txt for usage instructions.
*/
#ifndef MBEDTLS_CONFIG_H
#define MBEDTLS_CONFIG_H
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/* System support */
//#define MBEDTLS_HAVE_TIME /* Optionally used in Hello messages */
/* Other MBEDTLS_HAVE_XXX flags irrelevant for this configuration */
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/* mbed TLS feature support */
#define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
#define MBEDTLS_SSL_PROTO_TLS1_2
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/* 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_SRV_C
#define MBEDTLS_SSL_TLS_C
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/* Save RAM at the expense of ROM */
#define MBEDTLS_AES_ROM_TABLES
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/* Save some RAM by adjusting to your exact needs */
#define MBEDTLS_PSK_MAX_LEN 16 /* 128-bits keys are generally enough */
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/*
* You should adjust this to the exact number of sources you're using: default
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* is the "platform_entropy_poll" source, but you may want to add other ones
* Minimum is 2 for the entropy test suite.
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*/
#define MBEDTLS_ENTROPY_MAX_SOURCES 2
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/*
* 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
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/*
* Save RAM at the expense of interoperability: do this only if you control
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* both ends of the connection! (See comments in "mbedtls/ssl.h".)
* The optimal size here depends on the typical size of records.
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*/
#define MBEDTLS_SSL_MAX_CONTENT_LEN 512
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#include "mbedtls/check_config.h"
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#endif /* MBEDTLS_CONFIG_H */