1/* ripemd160.h
2
3 RIPEMD-160 hash function.
4
5 Copyright (C) 2011 Andres Mejia
6
7 This file is part of GNU Nettle.
8
9 GNU Nettle is free software: you can redistribute it and/or
10 modify it under the terms of either:
11
12 * the GNU Lesser General Public License as published by the Free
13 Software Foundation; either version 3 of the License, or (at your
14 option) any later version.
15
16 or
17
18 * the GNU General Public License as published by the Free
19 Software Foundation; either version 2 of the License, or (at your
20 option) any later version.
21
22 or both in parallel, as here.
23
24 GNU Nettle is distributed in the hope that it will be useful,
25 but WITHOUT ANY WARRANTY; without even the implied warranty of
26 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 General Public License for more details.
28
29 You should have received copies of the GNU General Public License and
30 the GNU Lesser General Public License along with this program. If
31 not, see http://www.gnu.org/licenses/.
32*/
33
34#ifndef NETTLE_RIPEMD160_H_INCLUDED
35#define NETTLE_RIPEMD160_H_INCLUDED
36
37#ifdef __cplusplus
38extern "C" {
39#endif
40
41#include "nettle-types.h"
42
43/* Name mangling */
44#define ripemd160_init nettle_ripemd160_init
45#define ripemd160_update nettle_ripemd160_update
46#define ripemd160_digest nettle_ripemd160_digest
47
48/* RIPEMD160 */
49
50#define RIPEMD160_DIGEST_SIZE 20
51#define RIPEMD160_BLOCK_SIZE 64
52/* For backwards compatibility */
53#define RIPEMD160_DATA_SIZE RIPEMD160_BLOCK_SIZE
54
55/* Digest is kept internally as 5 32-bit words. */
56#define _RIPEMD160_DIGEST_LENGTH 5
57
58struct ripemd160_ctx
59{
60 uint32_t state[_RIPEMD160_DIGEST_LENGTH];
61 uint64_t count; /* 64-bit block count */
62 uint8_t block[RIPEMD160_BLOCK_SIZE];
63 unsigned int index;
64};
65
66void
67ripemd160_init(struct ripemd160_ctx *ctx);
68
69void
70ripemd160_update(struct ripemd160_ctx *ctx,
71 size_t length,
72 const uint8_t *data);
73
74void
75ripemd160_digest(struct ripemd160_ctx *ctx,
76 size_t length,
77 uint8_t *digest);
78
79/* Internal compression function. STATE points to 5 uint32_t words,
80 and DATA points to 64 bytes of input data, possibly unaligned. */
81void
82_nettle_ripemd160_compress(uint32_t *state, const uint8_t *data);
83
84#ifdef __cplusplus
85}
86#endif
87
88#endif /* NETTLE_RIPEMD160_H_INCLUDED */
89