/usr/include/nettle/sha1.h is in nettle-dev 2.7.1-1ubuntu0.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | /* sha1.h
*
* The sha1 hash function.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2001, 2012 Niels Möller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The nettle library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02111-1301, USA.
*/
#ifndef NETTLE_SHA1_H_INCLUDED
#define NETTLE_SHA1_H_INCLUDED
#include "nettle-types.h"
#ifdef __cplusplus
extern "C" {
#endif
/* Name mangling */
#define sha1_init nettle_sha1_init
#define sha1_update nettle_sha1_update
#define sha1_digest nettle_sha1_digest
/* SHA1 */
#define SHA1_DIGEST_SIZE 20
#define SHA1_DATA_SIZE 64
/* Digest is kept internally as 5 32-bit words. */
#define _SHA1_DIGEST_LENGTH 5
struct sha1_ctx
{
uint32_t state[_SHA1_DIGEST_LENGTH]; /* State variables */
uint32_t count_low, count_high; /* 64-bit block count */
uint8_t block[SHA1_DATA_SIZE]; /* SHA1 data buffer */
unsigned int index; /* index into buffer */
};
void
sha1_init(struct sha1_ctx *ctx);
void
sha1_update(struct sha1_ctx *ctx,
unsigned length,
const uint8_t *data);
void
sha1_digest(struct sha1_ctx *ctx,
unsigned length,
uint8_t *digest);
/* Internal compression function. STATE points to 5 uint32_t words,
and DATA points to 64 bytes of input data, possibly unaligned. */
void
_nettle_sha1_compress(uint32_t *state, const uint8_t *data);
#ifdef __cplusplus
}
#endif
#endif /* NETTLE_SHA1_H_INCLUDED */
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