aboutsummaryrefslogblamecommitdiffstats
path: root/libavutil/aes.h
blob: cf7b462092764561253adf176a3517c17aa553e8 (plain) (tree)
1
2
3
4
5
6
7
8
9
10

                                                            
                              
  
                                                         


                                                                     
                                                           



                                                                    
                                                               

                                                                               
                    
 
                   




                         
                             
             
   
                               

                                                    
                                                                                
 
   
                                                                      

                                                    
                                                                              
                                                    
                                                                                                          
 


     
                         
/*
 * copyright (c) 2007 Michael Niedermayer <michaelni@gmx.at>
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; 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 */