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/**********************************************************************
* gosthash.h *
* Copyright (c) 2005-2006 Cryptocom LTD *
* This file is distributed under the same license as OpenSSL *
* *
* Declaration of GOST R 34.11-94 hash functions *
* uses and gost89.h Doesn't need OpenSSL *
**********************************************************************/
#ifndef GOSTHASH_H
# define GOSTHASH_H
# include "gost89.h"
# include <stdlib.h>
# if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
typedef __int64 ghosthash_len;
# elif defined(__arch64__)
typedef long ghosthash_len;
# else
typedef long long ghosthash_len;
# endif
typedef struct gost_hash_ctx {
ghosthash_len len;
gost_ctx *cipher_ctx;
int left;
byte H[32];
byte S[32];
byte remainder[32];
} gost_hash_ctx;
/* Initalizes gost hash ctx, including creation of gost cipher ctx */
int init_gost_hash_ctx(gost_hash_ctx * ctx,
const gost_subst_block * subst_block);
void done_gost_hash_ctx(gost_hash_ctx * ctx);
/*
* Cleans up all fields, except cipher ctx preparing ctx for computing of new
* hash value
*/
int start_hash(gost_hash_ctx * ctx);
/* Hashes block of data */
int hash_block(gost_hash_ctx * ctx, const byte * block, size_t length);
/*
* Finalizes computation of hash and fills buffer (which should be at least
* 32 bytes long) with value of computed hash.
*/
int finish_hash(gost_hash_ctx * ctx, byte * hashval);
#endif
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