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name : aes.h
 /* crypto/aes/aes.h */
/* ====================================================================
 * 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

# include <openssl/opensslconf.h>

# ifdef OPENSSL_NO_AES
#  error AES is disabled.
# endif

# include <stddef.h>

# 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 {
# 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;

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);

int private_AES_set_encrypt_key(const unsigned char *userKey, const int bits,
                                AES_KEY *key);
int private_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,
                     size_t length, const AES_KEY *key,
                     unsigned char *ivec, const int enc);
void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
                        size_t length, const AES_KEY *key,
                        unsigned char *ivec, int *num, const int enc);
void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
                      size_t length, const AES_KEY *key,
                      unsigned char *ivec, int *num, const int enc);
void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
                      size_t length, const AES_KEY *key,
                      unsigned char *ivec, int *num, const int enc);
void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
                        size_t length, const AES_KEY *key,
                        unsigned char *ivec, int *num);
void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
                        size_t length, const AES_KEY *key,
                        unsigned char ivec[AES_BLOCK_SIZE],
                        unsigned char ecount_buf[AES_BLOCK_SIZE],
                        unsigned int *num);
/* NB: the IV is _two_ blocks long */
void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
                     size_t length, const AES_KEY *key,
                     unsigned char *ivec, const int enc);
/* NB: the IV is _four_ blocks long */
void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
                        size_t length, const AES_KEY *key,
                        const AES_KEY *key2, const unsigned char *ivec,
                        const int enc);

int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
                 unsigned char *out,
                 const unsigned char *in, unsigned int inlen);
int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
                   unsigned char *out,
                   const unsigned char *in, unsigned int inlen);


#ifdef  __cplusplus
}
#endif

#endif                          /* !HEADER_AES_H */
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