config-ccm-psk-tls1_2.h

00001 /*
00002  *  Minimal configuration for TLS 1.2 with PSK and AES-CCM ciphersuites
00003  *
00004  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
00005  *  SPDX-License-Identifier: Apache-2.0
00006  *
00007  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
00008  *  not use this file except in compliance with the License.
00009  *  You may obtain a copy of the License at
00010  *
00011  *  http://www.apache.org/licenses/LICENSE-2.0
00012  *
00013  *  Unless required by applicable law or agreed to in writing, software
00014  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
00015  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00016  *  See the License for the specific language governing permissions and
00017  *  limitations under the License.
00018  *
00019  *  This file is part of mbed TLS (https://tls.mbed.org)
00020  */
00021 /*
00022  * Minimal configuration for TLS 1.2 with PSK and AES-CCM ciphersuites
00023  * Distinguishing features:
00024  * - no bignum, no PK, no X509
00025  * - fully modern and secure (provided the pre-shared keys have high entropy)
00026  * - very low record overhead with CCM-8
00027  * - optimized for low RAM usage
00028  *
00029  * See README.txt for usage instructions.
00030  */
00031 #ifndef MBEDTLS_CONFIG_H
00032 #define MBEDTLS_CONFIG_H
00033 
00034 /* System support */
00035 //#define MBEDTLS_HAVE_TIME /* Optionally used in Hello messages */
00036 /* Other MBEDTLS_HAVE_XXX flags irrelevant for this configuration */
00037 
00038 /* mbed TLS feature support */
00039 #define MBEDTLS_KEY_EXCHANGE_PSK_ENABLED
00040 #define MBEDTLS_SSL_PROTO_TLS1_2
00041 
00042 /* mbed TLS modules */
00043 #define MBEDTLS_AES_C
00044 #define MBEDTLS_CCM_C
00045 #define MBEDTLS_CIPHER_C
00046 #define MBEDTLS_CTR_DRBG_C
00047 #define MBEDTLS_ENTROPY_C
00048 #define MBEDTLS_MD_C
00049 #define MBEDTLS_NET_C
00050 #define MBEDTLS_SHA256_C
00051 #define MBEDTLS_SSL_CLI_C
00052 #define MBEDTLS_SSL_SRV_C
00053 #define MBEDTLS_SSL_TLS_C
00054 
00055 /* Save RAM at the expense of ROM */
00056 #define MBEDTLS_AES_ROM_TABLES
00057 
00058 /* Save some RAM by adjusting to your exact needs */
00059 #define MBEDTLS_PSK_MAX_LEN    16 /* 128-bits keys are generally enough */
00060 
00061 /*
00062  * You should adjust this to the exact number of sources you're using: default
00063  * is the "platform_entropy_poll" source, but you may want to add other ones
00064  * Minimum is 2 for the entropy test suite.
00065  */
00066 #define MBEDTLS_ENTROPY_MAX_SOURCES 2
00067 
00068 /*
00069  * Use only CCM_8 ciphersuites, and
00070  * save ROM and a few bytes of RAM by specifying our own ciphersuite list
00071  */
00072 #define MBEDTLS_SSL_CIPHERSUITES                        \
00073         MBEDTLS_TLS_PSK_WITH_AES_256_CCM_8,             \
00074         MBEDTLS_TLS_PSK_WITH_AES_128_CCM_8
00075 
00076 /*
00077  * Save RAM at the expense of interoperability: do this only if you control
00078  * both ends of the connection!  (See comments in "mbedtls/ssl.h".)
00079  * The optimal size here depends on the typical size of records.
00080  */
00081 #define MBEDTLS_SSL_MAX_CONTENT_LEN             512
00082 
00083 #include "mbedtls/check_config.h"
00084 
00085 #endif /* MBEDTLS_CONFIG_H */