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 00059 void av_des_mac(struct AVDES *d, uint8_t *dst, const uint8_t *src, int count); 00060 00061 #endif /* AVUTIL_DES_H */
1.5.8