/* crypto/aes/aes.h -*- mode:C; c-file-style: "eay" -*- */

/* ====================================================================

 * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer. 

 *

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in

 *    the documentation and/or other materials provided with the

 *    distribution.

 *

 * 3. All advertising materials mentioning features or use of this

 *    software must display the following acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"

 *

 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to

 *    endorse or promote products derived from this software without

 *    prior written permission. For written permission, please contact

 *    openssl-core@openssl.org.

 *

 * 5. Products derived from this software may not be called "OpenSSL"

 *    nor may "OpenSSL" appear in their names without prior written

 *    permission of the OpenSSL Project.

 *

 * 6. Redistributions of any form whatsoever must retain the following

 *    acknowledgment:

 *    "This product includes software developed by the OpenSSL Project

 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"

 *

 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR

 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

 * OF THE POSSIBILITY OF SUCH DAMAGE.

 * ====================================================================

 *

 */

#ifndef HEADER_AES_H

#define HEADER_AES_H

#ifdef OPENSSL_NO_AES

#error AES is disabled.

#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

#ifdef  __cplusplus

extern "C" {

#endif

/* This should be a hidden type, but EVP requires that the size be known */

struct aes_key_st {

    unsigned long rd_key[4 *(AES_MAXNR + 1)];

    int rounds;

};

typedef struct aes_key_st AES_KEY;

const char *AES_options(void);

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_encrypt(const unsigned char *in, unsigned char *out,

	const AES_KEY *key);

void AES_decrypt(const unsigned char *in, unsigned char *out,

	const AES_KEY *key);

void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,

	const AES_KEY *key, const int enc);

void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const AES_KEY *key,

	unsigned char *ivec, const int enc);

void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const AES_KEY *key,

	unsigned char *ivec, int *num, const int enc);

void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const AES_KEY *key,

	unsigned char *ivec, int *num);

void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,

	const unsigned long length, const AES_KEY *key,

	unsigned char counter[AES_BLOCK_SIZE],

	unsigned char ecount_buf[AES_BLOCK_SIZE],

	unsigned int *num);

#ifdef  __cplusplus

}

#endif

#endif /* !HEADER_AES_H */