lib/crypto/hmacsha256.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Interface header:    HMAC SHA256 code
   5
   6    Copyright (C) Andrew Tridgell 2008
   7
   8    based on hmacsha1.h which is:
   9
  10     Copyright (C) Stefan Metzmacher 2006
  11
  12    This program is free software; you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation; either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    This program is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24 */
  25
  26 #ifndef _HMAC_SHA256_H
  27
  28 struct HMACSHA256Context {
  29         SHA256_CTX ctx;
  30         uint8_t k_ipad[65];
  31         uint8_t k_opad[65];
  32 };
  33
  34 void hmac_sha256_init(const uint8_t *key, size_t key_len, struct HMACSHA256Context *ctx);
  35 void hmac_sha256_update(const uint8_t *data, size_t data_len, struct HMACSHA256Context *ctx);
  36 void hmac_sha256_final(uint8_t digest[SHA256_DIGEST_LENGTH], struct HMACSHA256Context *ctx);
  37
  38 #endif /* _HMAC_SHA256_H */