2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
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:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
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
28 se_choose(const br_ssl_server_policy_class **pctx,
29 const br_ssl_server_context *cc,
30 br_ssl_server_choices *choices)
32 br_ssl_server_policy_ec_context *pc;
33 const br_suite_translated *st;
37 pc = (br_ssl_server_policy_ec_context *)pctx;
38 st = br_ssl_server_get_client_suites(cc, &st_num);
39 hash_id = br_ssl_choose_hash(br_ssl_server_get_client_hashes(cc) >> 8);
40 if (cc->eng.session.version < BR_TLS12) {
43 choices->chain = pc->chain;
44 choices->chain_len = pc->chain_len;
45 for (u = 0; u < st_num; u ++) {
50 case BR_SSLKEYX_ECDH_RSA:
51 if ((pc->allowed_usages & BR_KEYTYPE_KEYX) != 0
52 && pc->cert_issuer_key_type == BR_KEYTYPE_RSA)
54 choices->cipher_suite = st[u][0];
58 case BR_SSLKEYX_ECDH_ECDSA:
59 if ((pc->allowed_usages & BR_KEYTYPE_KEYX) != 0
60 && pc->cert_issuer_key_type == BR_KEYTYPE_EC)
62 choices->cipher_suite = st[u][0];
66 case BR_SSLKEYX_ECDHE_ECDSA:
67 if ((pc->allowed_usages & BR_KEYTYPE_SIGN) != 0
70 choices->cipher_suite = st[u][0];
71 choices->algo_id = hash_id + 0xFF00;
81 se_do_keyx(const br_ssl_server_policy_class **pctx,
82 unsigned char *data, size_t *len)
84 br_ssl_server_policy_ec_context *pc;
88 pc = (br_ssl_server_policy_ec_context *)pctx;
89 r = pc->iec->mul(data, *len, pc->sk->x, pc->sk->xlen, pc->sk->curve);
90 xoff = pc->iec->xoff(pc->sk->curve, &xlen);
91 memmove(data, data + xoff, xlen);
97 se_do_sign(const br_ssl_server_policy_class **pctx,
98 unsigned algo_id, unsigned char *data, size_t hv_len, size_t len)
100 br_ssl_server_policy_ec_context *pc;
101 unsigned char hv[64];
102 const br_hash_class *hc;
105 pc = (br_ssl_server_policy_ec_context *)pctx;
106 hc = br_multihash_getimpl(pc->mhash, algo_id);
110 memcpy(hv, data, hv_len);
114 return pc->iecdsa(pc->iec, hc, hv, pc->sk, data);
117 static const br_ssl_server_policy_class se_policy_vtable = {
118 sizeof(br_ssl_server_policy_ec_context),
124 /* see bearssl_ssl.h */
126 br_ssl_server_set_single_ec(br_ssl_server_context *cc,
127 const br_x509_certificate *chain, size_t chain_len,
128 const br_ec_private_key *sk, unsigned allowed_usages,
129 unsigned cert_issuer_key_type,
130 const br_ec_impl *iec, br_ecdsa_sign iecdsa)
132 cc->chain_handler.single_ec.vtable = &se_policy_vtable;
133 cc->chain_handler.single_ec.chain = chain;
134 cc->chain_handler.single_ec.chain_len = chain_len;
135 cc->chain_handler.single_ec.sk = sk;
136 cc->chain_handler.single_ec.allowed_usages = allowed_usages;
137 cc->chain_handler.single_ec.cert_issuer_key_type = cert_issuer_key_type;
138 cc->chain_handler.single_ec.mhash = &cc->eng.mhash;
139 cc->chain_handler.single_ec.iec = iec;
140 cc->chain_handler.single_ec.iecdsa = iecdsa;
141 cc->policy_vtable = &cc->chain_handler.single_ec.vtable;