_ Git - BearSSL/blob - src/ssl/ssl_server_minv2g.c

   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
  29 br_ssl_server_init_minv2g(br_ssl_server_context *cc,
  30         const br_x509_certificate *chain, size_t chain_len,
  31         const br_ec_private_key *sk)
  32 {
  33         static const uint16_t suites[] = {
  34                 BR_TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256
  35         };
  36
  37         /*
  38          * Reset server context and set supported versions to TLS-1.2 (only).
  39          */
  40         br_ssl_server_zero(cc);
  41         br_ssl_engine_set_versions(&cc->eng, BR_TLS12, BR_TLS12);
  42
  43         /*
  44          * Set suites.
  45          */
  46         br_ssl_engine_set_suites(&cc->eng, suites,
  47                 (sizeof suites) / (sizeof suites[0]));
  48
  49         /*
  50          * Set the "server policy": handler for the certificate chain
  51          * and private key operations.
  52          */
  53         br_ssl_server_set_single_ec(cc, chain, chain_len, sk,
  54                 BR_KEYTYPE_KEYX, BR_KEYTYPE_EC, &br_ec_prime_i31, 0);
  55
  56         /*
  57          * Set supported hash functions.
  58          */
  59         br_ssl_engine_set_hash(&cc->eng, br_sha256_ID, &br_sha256_vtable);
  60
  61         /*
  62          * Set the PRF implementations.
  63          */
  64         br_ssl_engine_set_prf_sha256(&cc->eng, &br_tls12_sha256_prf);
  65
  66         /*
  67          * Symmetric encryption. We use the "constant-time"
  68          * implementations, which are the safest.
  69          *
  70          * On architectures detected as "64-bit", use the 64-bit
  71          * versions (aes_ct64, ghash_ctmul64).
  72          */
  73 #if BR_64
  74         br_ssl_engine_set_aes_ctr(&cc->eng,
  75                 &br_aes_ct64_ctr_vtable);
  76         br_ssl_engine_set_ghash(&cc->eng,
  77                 &br_ghash_ctmul64);
  78 #else
  79         br_ssl_engine_set_aes_ctr(&cc->eng,
  80                 &br_aes_ct_ctr_vtable);
  81         br_ssl_engine_set_ghash(&cc->eng,
  82                 &br_ghash_ctmul);
  83 #endif
  84
  85         /*
  86          * Set the SSL record engines (CBC, GCM).
  87          */
  88         br_ssl_engine_set_gcm(&cc->eng,
  89                 &br_sslrec_in_gcm_vtable,
  90                 &br_sslrec_out_gcm_vtable);
  91 }