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fa121c39 AM |
1 | /* ripemd160.h |
2 | * | |
3 | * RIPEMD-160 hash function. | |
4 | */ | |
5 | ||
6 | /* nettle, low-level cryptographics library | |
7 | * | |
8 | * Copyright (C) 2011 Andres Mejia | |
9 | * | |
10 | * The nettle library is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU Lesser General Public License as published by | |
12 | * the Free Software Foundation; either version 2.1 of the License, or (at your | |
13 | * option) any later version. | |
14 | * | |
15 | * The nettle library is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
17 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public | |
18 | * License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU Lesser General Public License | |
21 | * along with the nettle library; see the file COPYING.LIB. If not, write to | |
ee6ff2cc NM |
22 | * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, |
23 | * MA 02111-1301, USA. | |
fa121c39 AM |
24 | */ |
25 | ||
26 | #ifndef NETTLE_RIPEMD160_H_INCLUDED | |
27 | #define NETTLE_RIPEMD160_H_INCLUDED | |
28 | ||
29 | #ifdef __cplusplus | |
30 | extern "C" { | |
31 | #endif | |
32 | ||
33 | #include "nettle-types.h" | |
34 | ||
35 | /* Name mangling */ | |
36 | #define ripemd160_init nettle_ripemd160_init | |
37 | #define ripemd160_update nettle_ripemd160_update | |
38 | #define ripemd160_digest nettle_ripemd160_digest | |
39 | ||
40 | /* RIPEMD160 */ | |
41 | ||
42 | #define RIPEMD160_DIGEST_SIZE 20 | |
43 | #define RIPEMD160_DATA_SIZE 64 | |
44 | ||
45 | /* Digest is kept internally as 5 32-bit words. */ | |
46 | #define _RIPEMD160_DIGEST_LENGTH 5 | |
47 | ||
48 | struct ripemd160_ctx | |
49 | { | |
8cb0fdef | 50 | uint32_t state[_RIPEMD160_DIGEST_LENGTH]; |
cb83bd33 | 51 | uint64_t count; /* 64-bit block count */ |
fa121c39 AM |
52 | uint8_t block[RIPEMD160_DATA_SIZE]; |
53 | unsigned int index; | |
54 | }; | |
55 | ||
56 | void | |
57 | ripemd160_init(struct ripemd160_ctx *ctx); | |
58 | ||
59 | void | |
60 | ripemd160_update(struct ripemd160_ctx *ctx, | |
b8bfc32f | 61 | size_t length, |
fa121c39 AM |
62 | const uint8_t *data); |
63 | ||
64 | void | |
65 | ripemd160_digest(struct ripemd160_ctx *ctx, | |
b8bfc32f | 66 | size_t length, |
fa121c39 AM |
67 | uint8_t *digest); |
68 | ||
69 | /* Internal compression function. STATE points to 5 uint32_t words, | |
70 | and DATA points to 64 bytes of input data, possibly unaligned. */ | |
71 | void | |
72 | _nettle_ripemd160_compress(uint32_t *state, const uint8_t *data); | |
73 | ||
74 | #ifdef __cplusplus | |
75 | } | |
76 | #endif | |
77 | ||
78 | #endif /* NETTLE_RIPEMD160_H_INCLUDED */ |