_ Git - BearSSL/blob - src/rsa/rsa_i62_pss_sign.c

   1 /*
   2  * Copyright (c) 2018 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 #if BR_INT128 || BR_UMUL128
  28
  29 /* see bearssl_rsa.h */
  30 uint32_t
  31 br_rsa_i62_pss_sign(const br_prng_class **rng,
  32         const br_hash_class *hf_data, const br_hash_class *hf_mgf1,
  33         const unsigned char *hash, size_t salt_len,
  34         const br_rsa_private_key *sk, unsigned char *x)
  35 {
  36         if (!br_rsa_pss_sig_pad(rng, hf_data, hf_mgf1, hash,
  37                 salt_len, sk->n_bitlen, x))
  38         {
  39                 return 0;
  40         }
  41         return br_rsa_i62_private(x, sk);
  42 }
  43
  44 /* see bearssl_rsa.h */
  45 br_rsa_pss_sign
  46 br_rsa_i62_pss_sign_get(void)
  47 {
  48         return &br_rsa_i62_pss_sign;
  49 }
  50
  51 #else
  52
  53 /* see bearssl_rsa.h */
  54 br_rsa_pss_sign
  55 br_rsa_i62_pss_sign_get(void)
  56 {
  57         return 0;
  58 }
  59
  60 #endif