3 * The sha1 and sha256 hash functions.
6 /* nettle, low-level cryptographics library
8 * Copyright (C) 2001 Niels Möller
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.
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.
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
22 * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
26 #ifndef NETTLE_SHA_H_INCLUDED
27 #define NETTLE_SHA_H_INCLUDED
32 #define sha1_init nettle_sha1_init
33 #define sha1_update nettle_sha1_update
34 #define sha1_digest nettle_sha1_digest
35 #define sha256_init nettle_sha256_init
36 #define sha256_update nettle_sha256_update
37 #define sha256_digest nettle_sha256_digest
41 #define SHA1_DIGEST_SIZE 20
42 #define SHA1_DATA_SIZE 64
44 /* Digest is kept internally as 5 32-bit words. */
45 #define _SHA1_DIGEST_LENGTH 5
49 uint32_t digest
[_SHA1_DIGEST_LENGTH
]; /* Message digest */
50 uint32_t count_low
, count_high
; /* 64-bit block count */
51 uint8_t block
[SHA1_DATA_SIZE
]; /* SHA1 data buffer */
52 unsigned int index
; /* index into buffer */
56 sha1_init(struct sha1_ctx
*ctx
);
59 sha1_update(struct sha1_ctx
*ctx
,
64 sha1_digest(struct sha1_ctx
*ctx
,
70 #define SHA256_DIGEST_SIZE 32
71 #define SHA256_DATA_SIZE 64
73 /* Digest is kept internally as 8 32-bit words. */
74 #define _SHA256_DIGEST_LENGTH 8
78 uint32_t state
[_SHA256_DIGEST_LENGTH
]; /* State variables */
79 uint32_t count_low
, count_high
; /* 64-bit block count */
80 uint8_t block
[SHA256_DATA_SIZE
]; /* SHA256 data buffer */
81 unsigned int index
; /* index into buffer */
85 sha256_init(struct sha256_ctx
*ctx
);
88 sha256_update(struct sha256_ctx
*ctx
,
93 sha256_digest(struct sha256_ctx
*ctx
,
98 #endif /* NETTLE_SHA_H_INCLUDED */