Libav
blowfish.h
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1 /*
2  * Blowfish algorithm
3  *
4  * This file is part of Libav.
5  *
6  * Libav is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * Libav is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #ifndef AVUTIL_BLOWFISH_H
22 #define AVUTIL_BLOWFISH_H
23 
24 #include <stdint.h>
25 #include "version.h"
26 
33 #if FF_API_CRYPTO_CONTEXT
34 #define AV_BF_ROUNDS 16
35 
36 typedef struct AVBlowfish {
37  uint32_t p[AV_BF_ROUNDS + 2];
38  uint32_t s[4][256];
39 } AVBlowfish;
40 #else
41 typedef struct AVBlowfish AVBlowfish;
42 #endif
43 
48 
56 void av_blowfish_init(struct AVBlowfish *ctx, const uint8_t *key, int key_len);
57 
66 void av_blowfish_crypt_ecb(struct AVBlowfish *ctx, uint32_t *xl, uint32_t *xr,
67  int decrypt);
68 
79 void av_blowfish_crypt(struct AVBlowfish *ctx, uint8_t *dst, const uint8_t *src,
80  int count, uint8_t *iv, int decrypt);
81 
86 #endif /* AVUTIL_BLOWFISH_H */
uint32_t p[AV_BF_ROUNDS+2]
Definition: blowfish.h:37
AVBlowfish * av_blowfish_alloc(void)
Allocate an AVBlowfish context.
Definition: blowfish.c:325
void av_blowfish_crypt(struct AVBlowfish *ctx, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context.
Definition: blowfish.c:392
uint8_t
#define src
Definition: vp8dsp.c:254
void av_blowfish_init(struct AVBlowfish *ctx, const uint8_t *key, int key_len)
Initialize an AVBlowfish context.
Definition: blowfish.c:330
Libavutil version macros.
AVFormatContext * ctx
Definition: movenc.c:48
void av_blowfish_crypt_ecb(struct AVBlowfish *ctx, uint32_t *xl, uint32_t *xr, int decrypt)
Encrypt or decrypt a buffer using a previously initialized context.
Definition: blowfish.c:365
uint32_t s[4][256]
Definition: blowfish.h:38
#define AV_BF_ROUNDS
Definition: blowfish.h:34