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
|
/*
* Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVUTIL_SHA_H
#define AVUTIL_SHA_H
#include <stdint.h>
extern const int av_sha_size;
struct AVSHA;
/**
* Initializes SHA-1 or SHA-2 hashing.
*
* @param context pointer to the function context (of size av_sha_size)
* @param bits number of bits in digest (SHA-1 - 160 bits, SHA-2 224 or 256 bits)
* @return zero if initialization succeeded, -1 otherwise
*/
int av_sha_init(struct AVSHA* context, int bits);
/**
* Updates hash value.
*
* @param context hash function context
* @param data input data to update hash with
* @param len input data length
*/
void av_sha_update(struct AVSHA* context, const uint8_t* data, unsigned int len);
/**
* Finishes hashing and output digest value.
*
* @param context hash function context
* @param digest buffer where output digest value is stored
*/
void av_sha_final(struct AVSHA* context, uint8_t *digest);
#endif /* AVUTIL_SHA_H */
|
