gosthash.h revision 296341 
1/**********************************************************************
2 *                          gosthash.h                                *
3 *             Copyright (c) 2005-2006 Cryptocom LTD                  *
4 *       This file is distributed under the same license as OpenSSL   *
5 *                                                                    *
6 *    Declaration of GOST R 34.11-94 hash functions                   *
7 *       uses  and gost89.h Doesn't need OpenSSL                      *
8 **********************************************************************/
9#ifndef GOSTHASH_H
10# define GOSTHASH_H
11# include "gost89.h"
12# include <stdlib.h>
13
14# if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
15typedef __int64 ghosthash_len;
16# elif defined(__arch64__)
17typedef long ghosthash_len;
18# else
19typedef long long ghosthash_len;
20# endif
21
22typedef struct gost_hash_ctx {
23    ghosthash_len len;
24    gost_ctx *cipher_ctx;
25    int left;
26    byte H[32];
27    byte S[32];
28    byte remainder[32];
29} gost_hash_ctx;
30
31/* Initalizes gost hash ctx, including creation of gost cipher ctx */
32
33int init_gost_hash_ctx(gost_hash_ctx * ctx,
34                       const gost_subst_block * subst_block);
35void done_gost_hash_ctx(gost_hash_ctx * ctx);
36
37/*
38 * Cleans up all fields, except cipher ctx preparing ctx for computing of new
39 * hash value
40 */
41int start_hash(gost_hash_ctx * ctx);
42
43/* Hashes block of data */
44int hash_block(gost_hash_ctx * ctx, const byte * block, size_t length);
45
46/*
47 * Finalizes computation of hash and fills buffer (which should be at least
48 * 32 bytes long) with value of computed hash.
49 */
50int finish_hash(gost_hash_ctx * ctx, byte * hashval);
51
52#endif
53