include/reactos/libs/gnutls/nettle/md5.h

   1 /* md5.h
   2  *
   3  * The MD5 hash function, described in RFC 1321.
   4  */
   5
   6 /* nettle, low-level cryptographics library
   7  *
   8  * Copyright (C) 2001 Niels Möller
   9  *
  10  * The nettle library is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or (at your
  13  * option) any later version.
  14  *
  15  * The nettle library is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  18  * License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with the nettle library; see the file COPYING.LIB.  If not, write to
  22  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  23  * MA 02111-1301, USA.
  24  */
  25
  26 #ifndef NETTLE_MD5_H_INCLUDED
  27 #define NETTLE_MD5_H_INCLUDED
  28
  29 #include "nettle-types.h"
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 /* Name mangling */
  36 #define md5_init nettle_md5_init
  37 #define md5_update nettle_md5_update
  38 #define md5_digest nettle_md5_digest
  39
  40 #define MD5_DIGEST_SIZE 16
  41 #define MD5_DATA_SIZE 64
  42
  43 /* Digest is kept internally as 4 32-bit words. */
  44 #define _MD5_DIGEST_LENGTH 4
  45
  46         struct md5_ctx {
  47                 uint32_t state[_MD5_DIGEST_LENGTH];
  48                 uint32_t count_low, count_high; /* Block count */
  49                 uint8_t block[MD5_DATA_SIZE];   /* Block buffer */
  50                 unsigned index; /* Into buffer */
  51         };
  52
  53         void
  54          md5_init(struct md5_ctx *ctx);
  55
  56         void
  57          md5_update(struct md5_ctx *ctx,
  58                     unsigned length, const uint8_t * data);
  59
  60         void
  61          md5_digest(struct md5_ctx *ctx,
  62                     unsigned length, uint8_t * digest);
  63
  64 /* Internal compression function. STATE points to 4 uint32_t words,
  65    and DATA points to 64 bytes of input data, possibly unaligned. */
  66         void
  67          _nettle_md5_compress(uint32_t * state, const uint8_t * data);
  68
  69 #ifdef __cplusplus
  70 }
  71 #endif
  72 #endif                          /* NETTLE_MD5_H_INCLUDED */