3 The sha1 hash function.
5 Copyright (C) 2001, 2012 Niels Möller
7 This file is part of GNU Nettle.
9 GNU Nettle is free software: you can redistribute it and/or
10 modify it under the terms of either:
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.
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.
22 or both in parallel, as here.
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.
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/.
34 #ifndef NETTLE_SHA1_H_INCLUDED
35 #define NETTLE_SHA1_H_INCLUDED
37 #include "nettle-types.h"
44 #define sha1_init nettle_sha1_init
45 #define sha1_update nettle_sha1_update
46 #define sha1_digest nettle_sha1_digest
50 #define SHA1_DIGEST_SIZE 20
51 #define SHA1_BLOCK_SIZE 64
52 /* For backwards compatibility */
53 #define SHA1_DATA_SIZE SHA1_BLOCK_SIZE
55 /* Digest is kept internally as 5 32-bit words. */
56 #define _SHA1_DIGEST_LENGTH 5
60 uint32_t state[_SHA1_DIGEST_LENGTH]; /* State variables */
61 uint64_t count; /* 64-bit block count */
62 uint8_t block[SHA1_BLOCK_SIZE]; /* SHA1 data buffer */
63 unsigned int index; /* index into buffer */
67 sha1_init(struct sha1_ctx *ctx);
70 sha1_update(struct sha1_ctx *ctx,
75 sha1_digest(struct sha1_ctx *ctx,
79 /* Internal compression function. STATE points to 5 uint32_t words,
80 and DATA points to 64 bytes of input data, possibly unaligned. */
82 nettle_sha1_compress(uint32_t *state, const uint8_t *data);
84 #define _nettle_sha1_compress nettle_sha1_compress
90 #endif /* NETTLE_SHA1_H_INCLUDED */