1 /*
2 * An implementation of the TwoFish algorithm
3 * Copyright (c) 2015 Supraja Meedinti
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #ifndef AVUTIL_TWOFISH_H
23 #define AVUTIL_TWOFISH_H
24
25 #include <stdint.h>
26
27
28 /**
29 * @file
30 * @brief Public header for libavutil TWOFISH algorithm
31 * @defgroup lavu_twofish TWOFISH
32 * @ingroup lavu_crypto
33 * @{
34 */
35
37
39
40 /**
41 * Allocate an AVTWOFISH context
42 * To free the struct: av_free(ptr)
43 */
45
46 /**
47 * Initialize an AVTWOFISH context.
48 *
49 * @param ctx an AVTWOFISH context
50 * @param key a key of size ranging from 1 to 32 bytes used for encryption/decryption
51 * @param key_bits number of keybits: 128, 192, 256 If less than the required, padded with zeroes to nearest valid value; return value is 0 if key_bits is 128/192/256, -1 if less than 0, 1 otherwise
52 */
54
55 /**
56 * Encrypt or decrypt a buffer using a previously initialized context
57 *
58 * @param ctx an AVTWOFISH context
59 * @param dst destination array, can be equal to src
60 * @param src source array, can be equal to dst
61 * @param count number of 16 byte blocks
62 * @paran iv initialization vector for CBC mode, NULL for ECB mode
63 * @param decrypt 0 for encryption, 1 for decryption
64 */
66
67 /**
68 * @}
69 */
70 #endif /* AVUTIL_TWOFISH_H */