/*
 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#ifndef HEADER_AES_H
# define HEADER_AES_H

# include <stddef.h>
# ifdef  __cplusplus
extern "C" {
# endif

# define AES_ENCRYPT     1
# define AES_DECRYPT     0

/*
 * Because array size can't be a const in C, the following two are macros.
 * Both sizes are in bytes.
 */
# define AES_MAXNR 14
# define AES_BLOCK_SIZE 16

typedef unsigned char u8;
typedef unsigned int u32;

/* This should be a hidden type, but EVP requires that the size be known */
struct aes_key_st {
# ifdef AES_LONG
    unsigned long rd_key[4 * (AES_MAXNR + 1)];
# else
    unsigned int rd_key[4 * (AES_MAXNR + 1)];
# endif
    int rounds;
};
typedef struct aes_key_st AES_KEY;

int AES_set_encrypt_key(const unsigned char * userKey, const int bits, AES_KEY * key);
int AES_set_decrypt_key(const unsigned char *userKey, const int bits, AES_KEY *key);

void AES_cbc_decrypt(const unsigned char *in, unsigned char *out,
                     size_t length, const AES_KEY *key,
                     unsigned char *ivec);

# ifdef  __cplusplus
}
# endif

#endif
