include/nettle/md4.h

0001 /* md4.h
0002
0003    The MD4 hash function, described in RFC 1320.
0004
0005    Copyright (C) 2003 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 #ifndef NETTLE_MD4_H_INCLUDED
0035 #define NETTLE_MD4_H_INCLUDED
0036
0037 #include "nettle-types.h"
0038
0039 #ifdef __cplusplus
0040 extern "C" {
0041 #endif
0042
0043 /* Name mangling */
0044 #define md4_init nettle_md4_init
0045 #define md4_update nettle_md4_update
0046 #define md4_digest nettle_md4_digest
0047
0048 #define MD4_DIGEST_SIZE 16
0049 #define MD4_BLOCK_SIZE 64
0050 /* For backwards compatibility */
0051 #define MD4_DATA_SIZE MD4_BLOCK_SIZE
0052
0053 /* Digest is kept internally as 4 32-bit words. */
0054 #define _MD4_DIGEST_LENGTH 4
0055
0056 /* FIXME: Identical to md5_ctx */
0057 struct md4_ctx
0058 {
0059   uint32_t state[_MD4_DIGEST_LENGTH];
0060   uint64_t count;           /* Block count */
0061   unsigned index;           /* Into buffer */
0062   uint8_t block[MD4_BLOCK_SIZE];    /* Block buffer */
0063 };
0064
0065 void
0066 md4_init(struct md4_ctx *ctx);
0067
0068 void
0069 md4_update(struct md4_ctx *ctx,
0070        size_t length,
0071        const uint8_t *data);
0072
0073 void
0074 md4_digest(struct md4_ctx *ctx,
0075        size_t length,
0076        uint8_t *digest);
0077
0078
0079 #ifdef __cplusplus
0080 }
0081 #endif
0082
0083 #endif /* NETTLE_MD4_H_INCLUDED */