00001 /* 00002 * Blowfish algorithm 00003 * Copyright (c) 2012 Samuel Pitoiset 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_BLOWFISH_H 00023 #define AVUTIL_BLOWFISH_H 00024 00025 #include <stdint.h> 00026 00033 #define AV_BF_ROUNDS 16 00034 00035 typedef struct AVBlowfish { 00036 uint32_t p[AV_BF_ROUNDS + 2]; 00037 uint32_t s[4][256]; 00038 } AVBlowfish; 00039 00047 void av_blowfish_init(struct AVBlowfish *ctx, const uint8_t *key, int key_len); 00048 00057 void av_blowfish_crypt_ecb(struct AVBlowfish *ctx, uint32_t *xl, uint32_t *xr, 00058 int decrypt); 00059 00070 void av_blowfish_crypt(struct AVBlowfish *ctx, uint8_t *dst, const uint8_t *src, 00071 int count, uint8_t *iv, int decrypt); 00072 00077 #endif /* AVUTIL_BLOWFISH_H */
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