Libav
xtea.h
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1 /*
2  * A 32-bit implementation of the XTEA 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_XTEA_H
22 #define AVUTIL_XTEA_H
23 
24 #include <stdint.h>
25 #include "version.h"
26 
35 #if FF_API_CRYPTO_CONTEXT
36 typedef struct AVXTEA {
37  uint32_t key[16];
38 } AVXTEA;
39 #else
40 typedef struct AVXTEA AVXTEA;
41 #endif
42 
46 AVXTEA *av_xtea_alloc(void);
47 
55 void av_xtea_init(struct AVXTEA *ctx, const uint8_t key[16]);
56 
64 void av_xtea_le_init(struct AVXTEA *ctx, const uint8_t key[16]);
65 
77 void av_xtea_crypt(struct AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
78  int count, uint8_t *iv, int decrypt);
79 
91 void av_xtea_le_crypt(struct AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
92  int count, uint8_t *iv, int decrypt);
93 
98 #endif /* AVUTIL_XTEA_H */
uint32_t key[16]
Definition: xtea.h:37
uint8_t
void av_xtea_crypt(struct AVXTEA *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, in big endian format...
Definition: xtea.c:165
#define src
Definition: vp8dsp.c:254
void av_xtea_init(struct AVXTEA *ctx, const uint8_t key[16])
Initialize an AVXTEA context.
Definition: xtea.c:48
Libavutil version macros.
AVFormatContext * ctx
Definition: movenc.c:48
void av_xtea_le_init(struct AVXTEA *ctx, const uint8_t key[16])
Initialize an AVXTEA context.
Definition: xtea.c:56
void av_xtea_le_crypt(struct AVXTEA *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, in little endian format...
Definition: xtea.c:171
Definition: xtea.h:36
AVXTEA * av_xtea_alloc(void)
Allocate an AVXTEA context.
Definition: xtea.c:43