1 /*
2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 #include "inner.h"
26
27 /* see bearssl_ssl.h */
28 void
br_ssl_server_init_full_rsa(br_ssl_server_context * cc,const br_x509_certificate * chain,size_t chain_len,const br_rsa_private_key * sk)29 br_ssl_server_init_full_rsa(br_ssl_server_context *cc,
30 const br_x509_certificate *chain, size_t chain_len,
31 const br_rsa_private_key *sk)
32 {
33 /*
34 * The "full" profile supports all implemented cipher suites.
35 *
36 * Rationale for suite order, from most important to least
37 * important rule:
38 *
39 * -- Don't use 3DES if AES is available.
40 * -- Try to have Forward Secrecy (ECDHE suite) if possible.
41 * -- ChaCha20+Poly1305 is better than AES/GCM (faster, smaller).
42 * -- GCM is better than CBC.
43 * -- AES-128 is preferred over AES-256 (AES-128 is already
44 * strong enough, and AES-256 is 40% more expensive).
45 */
46 static const uint16_t suites[] = {
47 BR_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
48 BR_TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
49 BR_TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
50 BR_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
51 BR_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
52 BR_TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
53 BR_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
54 BR_TLS_RSA_WITH_AES_128_GCM_SHA256,
55 BR_TLS_RSA_WITH_AES_256_GCM_SHA384,
56 BR_TLS_RSA_WITH_AES_128_CCM,
57 BR_TLS_RSA_WITH_AES_256_CCM,
58 BR_TLS_RSA_WITH_AES_128_CCM_8,
59 BR_TLS_RSA_WITH_AES_256_CCM_8,
60 BR_TLS_RSA_WITH_AES_128_CBC_SHA256,
61 BR_TLS_RSA_WITH_AES_256_CBC_SHA256,
62 BR_TLS_RSA_WITH_AES_128_CBC_SHA,
63 BR_TLS_RSA_WITH_AES_256_CBC_SHA,
64 BR_TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
65 BR_TLS_RSA_WITH_3DES_EDE_CBC_SHA
66 };
67
68 /*
69 * All hash functions are activated.
70 * Note: the X.509 validation engine will nonetheless refuse to
71 * validate signatures that use MD5 as hash function.
72 */
73 static const br_hash_class *hashes[] = {
74 &br_md5_vtable,
75 &br_sha1_vtable,
76 &br_sha224_vtable,
77 &br_sha256_vtable,
78 &br_sha384_vtable,
79 &br_sha512_vtable
80 };
81
82 int id;
83
84 /*
85 * Reset server context and set supported versions from TLS-1.0
86 * to TLS-1.2 (inclusive).
87 */
88 br_ssl_server_zero(cc);
89 br_ssl_engine_set_versions(&cc->eng, BR_TLS10, BR_TLS12);
90
91 /*
92 * Set suites and elliptic curve implementation (for ECDHE).
93 */
94 br_ssl_engine_set_suites(&cc->eng, suites,
95 (sizeof suites) / (sizeof suites[0]));
96 br_ssl_engine_set_default_ec(&cc->eng);
97
98 /*
99 * Set the "server policy": handler for the certificate chain
100 * and private key operations.
101 */
102 br_ssl_server_set_single_rsa(cc, chain, chain_len, sk,
103 BR_KEYTYPE_KEYX | BR_KEYTYPE_SIGN,
104 br_rsa_private_get_default(),
105 br_rsa_pkcs1_sign_get_default());
106
107 /*
108 * Set supported hash functions.
109 */
110 for (id = br_md5_ID; id <= br_sha512_ID; id ++) {
111 const br_hash_class *hc;
112
113 hc = hashes[id - 1];
114 br_ssl_engine_set_hash(&cc->eng, id, hc);
115 }
116
117 /*
118 * Set the PRF implementations.
119 */
120 br_ssl_engine_set_prf10(&cc->eng, &br_tls10_prf);
121 br_ssl_engine_set_prf_sha256(&cc->eng, &br_tls12_sha256_prf);
122 br_ssl_engine_set_prf_sha384(&cc->eng, &br_tls12_sha384_prf);
123
124 /*
125 * Symmetric encryption.
126 */
127 br_ssl_engine_set_default_aes_cbc(&cc->eng);
128 br_ssl_engine_set_default_aes_ccm(&cc->eng);
129 br_ssl_engine_set_default_aes_gcm(&cc->eng);
130 br_ssl_engine_set_default_des_cbc(&cc->eng);
131 br_ssl_engine_set_default_chapol(&cc->eng);
132 }
133