/*
  * copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 

 #ifndef AVUTIL_AES_H
 #define AVUTIL_AES_H

 #include <stdint.h>
 

 /**
  * @defgroup lavu_aes AES
  * @ingroup lavu_crypto
  * @{
  */
 

 extern const int av_aes_size;
 

 struct AVAES;
 

 /**

  * Initialize an AVAES context.

  * @param key_bits 128, 192 or 256
  * @param decrypt 0 for encryption, 1 for decryption
  */

 int av_aes_init(struct AVAES *a, const uint8_t *key, int key_bits, int decrypt);

 /**

  * Encrypt or decrypt a buffer using a previously initialized context.

  * @param count number of 16 byte blocks
  * @param dst destination array, can be equal to src
  * @param src source array, can be equal to dst

  * @param iv initialization vector for CBC mode, if NULL then ECB will be used

  * @param decrypt 0 for encryption, 1 for decryption
  */

 void av_aes_crypt(struct AVAES *a, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt);

 /**
  * @}
  */
 

 #endif /* AVUTIL_AES_H */