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libavutil/des.h

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00001 /*
00002  * DES encryption/decryption
00003  * Copyright (c) 2007 Reimar Doeffinger
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00022 #ifndef AVUTIL_DES_H
00023 #define AVUTIL_DES_H
00024 
00025 #include <stdint.h>
00026 
00027 struct AVDES {
00028     uint64_t round_keys[3][16];
00029     int triple_des;
00030 };
00031 
00038 int av_des_init(struct AVDES *d, const uint8_t *key, int key_bits, int decrypt);
00039 
00050 void av_des_crypt(struct AVDES *d, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);
00051 
00052 #endif /* AVUTIL_DES_H */

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