FFmpeg  1.2.12
hmac.h
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1 /*
2  * Copyright (C) 2012 Martin Storsjo
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVUTIL_HMAC_H
22 #define AVUTIL_HMAC_H
23 
24 #include <stdint.h>
25 
32 enum AVHMACType {
35 };
36 
37 typedef struct AVHMAC AVHMAC;
38 
43 AVHMAC *av_hmac_alloc(enum AVHMACType type);
44 
49 void av_hmac_free(AVHMAC *ctx);
50 
57 void av_hmac_init(AVHMAC *ctx, const uint8_t *key, unsigned int keylen);
58 
65 void av_hmac_update(AVHMAC *ctx, const uint8_t *data, unsigned int len);
66 
74 int av_hmac_final(AVHMAC *ctx, uint8_t *out, unsigned int outlen);
75 
87 int av_hmac_calc(AVHMAC *ctx, const uint8_t *data, unsigned int len,
88  const uint8_t *key, unsigned int keylen,
89  uint8_t *out, unsigned int outlen);
90 
95 #endif /* AVUTIL_HMAC_H */