1 /*
2  *  Minimal configuration for using TLS as part of Thread
3  *
4  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
5  *  SPDX-License-Identifier: Apache-2.0
6  *
7  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
8  *  not use this file except in compliance with the License.
9  *  You may obtain a copy of the License at
10  *
11  *  http://www.apache.org/licenses/LICENSE-2.0
12  *
13  *  Unless required by applicable law or agreed to in writing, software
14  *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16  *  See the License for the specific language governing permissions and
17  *  limitations under the License.
18  *
19  *  This file is part of mbed TLS (https://tls.mbed.org)
20  */
21 
22 /*
23  * Minimal configuration for using TLS a part of Thread
24  * http://threadgroup.org/
25  *
26  * Distinguishing features:
27  * - no RSA or classic DH, fully based on ECC
28  * - no X.509
29  * - support for experimental EC J-PAKE key exchange
30  *
31  * See README.txt for usage instructions.
32  */
33 
34 #ifndef MBEDTLS_CONFIG_H
35 #define MBEDTLS_CONFIG_H
36 
37 /* System support */
38 #define MBEDTLS_PLATFORM_C
39 #define MBEDTLS_PLATFORM_MEMORY
40 #define MBEDTLS_MEMORY_BUFFER_ALLOC_C
41 #define MBEDTLS_MEMORY_ALIGN_MULTIPLE (sizeof(void *))
42 #define MBEDTLS_PLATFORM_NO_STD_FUNCTIONS
43 #define MBEDTLS_PLATFORM_EXIT_ALT
44 #define MBEDTLS_NO_PLATFORM_ENTROPY
45 #define MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES
46 #define MBEDTLS_PLATFORM_PRINTF_ALT
47 
48 #if !defined(CONFIG_ARM)
49 #define MBEDTLS_HAVE_ASM
50 #endif
51 
52 #if defined(CONFIG_MBEDTLS_TEST)
53 #define MBEDTLS_SELF_TEST
54 #define MBEDTLS_DEBUG_C
55 #else
56 #define MBEDTLS_ENTROPY_C
57 #endif
58 
59 /* mbed TLS feature support */
60 #define MBEDTLS_AES_ROM_TABLES
61 #define MBEDTLS_ECP_DP_SECP256R1_ENABLED
62 #define MBEDTLS_ECP_NIST_OPTIM
63 #define MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED
64 #define MBEDTLS_SSL_MAX_FRAGMENT_LENGTH
65 #define MBEDTLS_SSL_PROTO_TLS1_2
66 #define MBEDTLS_SSL_PROTO_DTLS
67 #define MBEDTLS_SSL_DTLS_ANTI_REPLAY
68 #define MBEDTLS_SSL_DTLS_HELLO_VERIFY
69 #define MBEDTLS_SSL_EXPORT_KEYS
70 
71 /* mbed TLS modules */
72 #define MBEDTLS_AES_C
73 #define MBEDTLS_ASN1_PARSE_C
74 #define MBEDTLS_ASN1_WRITE_C
75 #define MBEDTLS_BIGNUM_C
76 #define MBEDTLS_CCM_C
77 #define MBEDTLS_CIPHER_C
78 #define MBEDTLS_CTR_DRBG_C
79 #define MBEDTLS_CMAC_C
80 #define MBEDTLS_ECJPAKE_C
81 #define MBEDTLS_ECP_C
82 #define MBEDTLS_HMAC_DRBG_C
83 #define MBEDTLS_MD_C
84 #define MBEDTLS_OID_C
85 #define MBEDTLS_PK_C
86 #define MBEDTLS_PK_PARSE_C
87 #define MBEDTLS_SHA224_C
88 #define MBEDTLS_SHA256_C
89 #define MBEDTLS_SSL_COOKIE_C
90 #define MBEDTLS_SSL_CLI_C
91 #define MBEDTLS_SSL_SRV_C
92 #define MBEDTLS_SSL_TLS_C
93 
94 
95 /* Save RAM at the expense of ROM */
96 #define MBEDTLS_AES_ROM_TABLES
97 
98 /* Save RAM by adjusting to our exact needs */
99 #define MBEDTLS_MPI_MAX_SIZE              32 // 256 bits is 32 bytes
100 
101 #define MBEDTLS_SSL_MAX_CONTENT_LEN 1024
102 
103 /* Save ROM and a few bytes of RAM by specifying our own ciphersuite list */
104 #define MBEDTLS_SSL_CIPHERSUITES MBEDTLS_TLS_ECJPAKE_WITH_AES_128_CCM_8
105 
106 #include "mbedtls/check_config.h"
107 
108 #endif /* MBEDTLS_CONFIG_H */
109