1/* 2 * Copyright (C) 2007 Michael Niedermayer <michaelni@gmx.at> 3 * Copyright (C) 2013 James Almer <jamrial@gmail.com> 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#ifndef AVUTIL_RIPEMD_H 23#define AVUTIL_RIPEMD_H 24 25#include <stdint.h> 26 27#include "attributes.h" 28#include "version.h" 29 30/** 31 * @defgroup lavu_ripemd RIPEMD 32 * @ingroup lavu_crypto 33 * @{ 34 */ 35 36extern const int av_ripemd_size; 37 38struct AVRIPEMD; 39 40/** 41 * Allocate an AVRIPEMD context. 42 */ 43struct AVRIPEMD *av_ripemd_alloc(void); 44 45/** 46 * Initialize RIPEMD hashing. 47 * 48 * @param context pointer to the function context (of size av_ripemd_size) 49 * @param bits number of bits in digest (128, 160, 256 or 320 bits) 50 * @return zero if initialization succeeded, -1 otherwise 51 */ 52int av_ripemd_init(struct AVRIPEMD* context, int bits); 53 54/** 55 * Update hash value. 56 * 57 * @param context hash function context 58 * @param data input data to update hash with 59 * @param len input data length 60 */ 61void av_ripemd_update(struct AVRIPEMD* context, const uint8_t* data, unsigned int len); 62 63/** 64 * Finish hashing and output digest value. 65 * 66 * @param context hash function context 67 * @param digest buffer where output digest value is stored 68 */ 69void av_ripemd_final(struct AVRIPEMD* context, uint8_t *digest); 70 71/** 72 * @} 73 */ 74 75#endif /* AVUTIL_RIPEMD_H */ 76