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

     2 /* ====================================================================

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

     4  *

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

     6  * modification, are permitted provided that the following conditions

     7  * are met:

     8  *

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

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

    11  *

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

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

    14  *    the documentation and/or other materials provided with the

    15  *    distribution.

    16  *

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

    18  *    software must display the following acknowledgment:

    19  *    "This product includes software developed by the OpenSSL Project

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

    21  *

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

    23  *    endorse or promote products derived from this software without

    24  *    prior written permission. For written permission, please contact

    25  *    openssl-core@openssl.org.

    26  *

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

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

    29  *    permission of the OpenSSL Project.

    30  *

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

    32  *    acknowledgment:

    33  *    "This product includes software developed by the OpenSSL Project

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

    35  *

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

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

    38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

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

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

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

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

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

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

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

    47  * OF THE POSSIBILITY OF SUCH DAMAGE.

    48  * ====================================================================

    49  *

    50  */

    51 

    52 #ifndef HEADER_AES_H

    53 #define HEADER_AES_H

    54 

    55 #ifdef OPENSSL_NO_AES

    56 #error AES is disabled.

    57 #endif

    58 

    59 #define AES_ENCRYPT	1

    60 #define AES_DECRYPT	0

    61 

    62 /* Because array size can't be a const in C, the following two are macros.

    63    Both sizes are in bytes. */

    64 #define AES_MAXNR 14

    65 #define AES_BLOCK_SIZE 16

    66 

    67 #ifdef  __cplusplus

    68 extern "C" {

    69 #endif

    70 

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

    72 struct aes_key_st {

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

    74     int rounds;

    75 };

    76 typedef struct aes_key_st AES_KEY;

    77 

    78 const char *AES_options(void);

    79 

    80 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,

    81 	AES_KEY *key);

    82 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,

    83 	AES_KEY *key);

    84 

    85 void AES_encrypt(const unsigned char *in, unsigned char *out,

    86 	const AES_KEY *key);

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

    88 	const AES_KEY *key);

    89 

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

    91 	const AES_KEY *key, const int enc);

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

    93 	const unsigned long length, const AES_KEY *key,

    94 	unsigned char *ivec, const int enc);

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

    96 	const unsigned long length, const AES_KEY *key,

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

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

    99 	const unsigned long length, const AES_KEY *key,

   100 	unsigned char *ivec, int *num);

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

   102 	const unsigned long length, const AES_KEY *key,

   103 	unsigned char counter[AES_BLOCK_SIZE],

   104 	unsigned char ecount_buf[AES_BLOCK_SIZE],

   105 	unsigned int *num);

   106 

   107 

   108 #ifdef  __cplusplus

   109 }

   110 #endif

   111 

   112 #endif /* !HEADER_AES_H */

   113