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| 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__) |
| 15 typedef __int64 ghosthash_len; |
| 16 #elif defined(__arch64__) |
| 17 typedef long ghosthash_len; |
| 18 #else |
| 19 typedef long long ghosthash_len; |
| 20 #endif |
| 21 |
| 22 typedef 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 |
| 32 /* Initalizes gost hash ctx, including creation of gost cipher ctx */ |
| 33 |
| 34 int init_gost_hash_ctx(gost_hash_ctx *ctx, const gost_subst_block *subst_block); |
| 35 void done_gost_hash_ctx(gost_hash_ctx *ctx); |
| 36 |
| 37 /* Cleans up all fields, except cipher ctx preparing ctx for computing |
| 38 * of new hash value */ |
| 39 int start_hash(gost_hash_ctx *ctx); |
| 40 |
| 41 /* Hashes block of data */ |
| 42 int hash_block(gost_hash_ctx *ctx, const byte *block, size_t length); |
| 43 |
| 44 /* Finalizes computation of hash and fills buffer (which should be at |
| 45 * least 32 bytes long) with value of computed hash. */ |
| 46 int finish_hash(gost_hash_ctx *ctx, byte *hashval); |
| 47 |
| 48 #endif |
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