forked from KolibriOS/kolibrios
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
|
/*
|
||
|
|
* 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>
|
||
|
|
|
||
|
|
#include "attributes.h"
|
||
|
|
#include "version.h"
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @defgroup lavu_sha SHA
|
||
|
|
* @ingroup lavu_crypto
|
||
|
|
* @{
|
||
|
|
*/
|
||
|
|
|
||
|
|
extern const int av_sha_size;
|
||
|
|
|
||
|
|
struct AVSHA;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Allocate an AVSHA context.
|
||
|
|
*/
|
||
|
|
struct AVSHA *av_sha_alloc(void);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initialize 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);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Update 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);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Finish 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 */
|