include/nettle/gosthash94.h

0001 /* gosthash94.h
0002
0003    The GOST R 34.11-94 hash function, described in RFC 5831.
0004
0005    Copyright (C) 2012 Nikos Mavrogiannopoulos, Niels Möller
0006
0007    This file is part of GNU Nettle.
0008
0009    GNU Nettle is free software: you can redistribute it and/or
0010    modify it under the terms of either:
0011
0012      * the GNU Lesser General Public License as published by the Free
0013        Software Foundation; either version 3 of the License, or (at your
0014        option) any later version.
0015
0016    or
0017
0018      * the GNU General Public License as published by the Free
0019        Software Foundation; either version 2 of the License, or (at your
0020        option) any later version.
0021
0022    or both in parallel, as here.
0023
0024    GNU Nettle is distributed in the hope that it will be useful,
0025    but WITHOUT ANY WARRANTY; without even the implied warranty of
0026    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
0027    General Public License for more details.
0028
0029    You should have received copies of the GNU General Public License and
0030    the GNU Lesser General Public License along with this program.  If
0031    not, see http://www.gnu.org/licenses/.
0032 */
0033
0034 /* Based on rhash gost.h. */
0035
0036 /* Copyright: 2009-2012 Aleksey Kravchenko <rhash.admin@gmail.com>
0037  *
0038  * Permission is hereby granted, free of charge, to any person obtaining a
0039  * copy of this software and associated documentation files (the
0040  * "Software"), to deal in the Software without restriction, including
0041  * without limitation the rights to use, copy, modify, merge, publish,
0042  * distribute, sublicense, and/or sell copies of the Software, and to
0043  * permit persons to whom the Software is furnished to do so, subject to
0044  * the following conditions:
0045  *
0046  * The above copyright notice and this permission notice shall be included
0047  * in all copies or substantial portions of the Software.
0048  *
0049  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
0050  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
0051  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
0052  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
0053  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
0054  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
0055  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
0056  */
0057
0058 /*
0059  * Ported to nettle by Nikos Mavrogiannopoulos.
0060  */
0061
0062 #ifndef NETTLE_GOSTHASH94_H_INCLUDED
0063 #define NETTLE_GOSTHASH94_H_INCLUDED
0064
0065 #include "nettle-types.h"
0066
0067 #ifdef __cplusplus
0068 extern "C" {
0069 #endif
0070
0071 #define gosthash94_init nettle_gosthash94_init
0072 #define gosthash94_update nettle_gosthash94_update
0073 #define gosthash94_digest nettle_gosthash94_digest
0074
0075 #define gosthash94cp_update nettle_gosthash94cp_update
0076 #define gosthash94cp_digest nettle_gosthash94cp_digest
0077
0078 #define GOSTHASH94_BLOCK_SIZE 32
0079 #define GOSTHASH94_DIGEST_SIZE 32
0080 /* For backwards compatibility */
0081 #define GOSTHASH94_DATA_SIZE GOSTHASH94_BLOCK_SIZE
0082
0083 #define GOSTHASH94CP_BLOCK_SIZE GOSTHASH94_BLOCK_SIZE
0084 #define GOSTHASH94CP_DIGEST_SIZE GOSTHASH94_DIGEST_SIZE
0085
0086 struct gosthash94_ctx
0087 {
0088   uint32_t hash[8]; /* algorithm 256-bit state */
0089   uint32_t sum[8];  /* sum of processed message blocks */
0090   uint64_t count;               /* Block count */
0091   unsigned index;               /* Into buffer */
0092   uint8_t block[GOSTHASH94_BLOCK_SIZE]; /* 256-bit buffer for leftovers */
0093 };
0094 #define gosthash94cp_ctx gosthash94_ctx
0095
0096 void gosthash94_init(struct gosthash94_ctx *ctx);
0097 void gosthash94_update(struct gosthash94_ctx *ctx,
0098                size_t length, const uint8_t *msg);
0099 void gosthash94_digest(struct gosthash94_ctx *ctx,
0100                size_t length, uint8_t *result);
0101
0102 #define gosthash94cp_init gosthash94_init
0103 void gosthash94cp_update(struct gosthash94_ctx *ctx,
0104              size_t length, const uint8_t *msg);
0105 void gosthash94cp_digest(struct gosthash94_ctx *ctx,
0106              size_t length, uint8_t *result);
0107
0108 #ifdef __cplusplus
0109 }
0110 #endif
0111
0112 #endif /* NETTLE_GOSTHASH94_H_INCLUDED */