2 * \file config-suite-b.h
4 * \brief Minimal configuration for TLS NSA Suite B Profile (RFC 6460)
7 * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
8 * SPDX-License-Identifier: Apache-2.0
10 * Licensed under the Apache License, Version 2.0 (the "License"); you may
11 * not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
14 * http://www.apache.org/licenses/LICENSE-2.0
16 * Unless required by applicable law or agreed to in writing, software
17 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
18 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
19 * See the License for the specific language governing permissions and
20 * limitations under the License.
22 * This file is part of mbed TLS (https://tls.mbed.org)
25 * Minimal configuration for TLS NSA Suite B Profile (RFC 6460)
27 * Distinguishing features:
28 * - no RSA or classic DH, fully based on ECC
29 * - optimized for low RAM usage
31 * Possible improvements:
32 * - if 128-bit security is enough, disable secp384r1 and SHA-512
33 * - use embedded certs in DER format and disable PEM_PARSE_C and BASE64_C
35 * See README.txt for usage instructions.
38 #ifndef MBEDTLS_CONFIG_H
39 #define MBEDTLS_CONFIG_H
42 #define MBEDTLS_HAVE_ASM
43 #define MBEDTLS_HAVE_TIME
45 /* mbed TLS feature support */
46 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
47 #define MBEDTLS_ECP_DP_SECP384R1_ENABLED
48 #define MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
49 #define MBEDTLS_SSL_PROTO_TLS1_2
51 /* mbed TLS modules */
53 #define MBEDTLS_ASN1_PARSE_C
54 #define MBEDTLS_ASN1_WRITE_C
55 #define MBEDTLS_BIGNUM_C
56 #define MBEDTLS_CIPHER_C
57 #define MBEDTLS_CTR_DRBG_C
58 #define MBEDTLS_ECDH_C
59 #define MBEDTLS_ECDSA_C
61 #define MBEDTLS_ENTROPY_C
67 #define MBEDTLS_PK_PARSE_C
68 #define MBEDTLS_SHA256_C
69 #define MBEDTLS_SHA512_C
70 #define MBEDTLS_SSL_CLI_C
71 #define MBEDTLS_SSL_SRV_C
72 #define MBEDTLS_SSL_TLS_C
73 #define MBEDTLS_X509_CRT_PARSE_C
74 #define MBEDTLS_X509_USE_C
76 /* For test certificates */
77 #define MBEDTLS_BASE64_C
78 #define MBEDTLS_CERTS_C
79 #define MBEDTLS_PEM_PARSE_C
81 /* Save RAM at the expense of ROM */
82 #define MBEDTLS_AES_ROM_TABLES
84 /* Save RAM by adjusting to our exact needs */
85 #define MBEDTLS_ECP_MAX_BITS 384
86 #define MBEDTLS_MPI_MAX_SIZE 48 // 384 bits is 48 bytes
88 /* Save RAM at the expense of speed, see ecp.h */
89 #define MBEDTLS_ECP_WINDOW_SIZE 2
90 #define MBEDTLS_ECP_FIXED_POINT_OPTIM 0
92 /* Significant speed benefit at the expense of some ROM */
93 #define MBEDTLS_ECP_NIST_OPTIM
96 * You should adjust this to the exact number of sources you're using: default
97 * is the "mbedtls_platform_entropy_poll" source, but you may want to add other ones.
98 * Minimum is 2 for the entropy test suite.
100 #define MBEDTLS_ENTROPY_MAX_SOURCES 2
102 /* Save ROM and a few bytes of RAM by specifying our own ciphersuite list */
103 #define MBEDTLS_SSL_CIPHERSUITES \
104 MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, \
105 MBEDTLS_TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256
108 * Save RAM at the expense of interoperability: do this only if you control
109 * both ends of the connection! (See coments in "mbedtls/ssl.h".)
110 * The minimum size here depends on the certificate chain used as well as the
111 * typical size of records.
113 #define MBEDTLS_SSL_MAX_CONTENT_LEN 1024
115 #include "mbedtls/check_config.h"
117 #endif /* MBEDTLS_CONFIG_H */