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      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 (at) 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,
     45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     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 #include <openssl/opensslconf.h>
     56 
     57 #ifdef OPENSSL_NO_AES
     58 #error AES is disabled.
     59 #endif
     60 
     61 #include <stddef.h>
     62 
     63 #define AES_ENCRYPT	1
     64 #define AES_DECRYPT	0
     65 
     66 /* Because array size can't be a const in C, the following two are macros.
     67    Both sizes are in bytes. */
     68 #define AES_MAXNR 14
     69 #define AES_BLOCK_SIZE 16
     70 
     71 #ifdef  __cplusplus
     72 extern "C" {
     73 #endif
     74 
     75 /* This should be a hidden type, but EVP requires that the size be known */
     76 struct aes_key_st {
     77 #ifdef AES_LONG
     78     unsigned long rd_key[4 *(AES_MAXNR + 1)];
     79 #else
     80     unsigned int rd_key[4 *(AES_MAXNR + 1)];
     81 #endif
     82     int rounds;
     83 };
     84 typedef struct aes_key_st AES_KEY;
     85 
     86 const char *AES_options(void);
     87 
     88 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
     89 	AES_KEY *key);
     90 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
     91 	AES_KEY *key);
     92 
     93 void AES_encrypt(const unsigned char *in, unsigned char *out,
     94 	const AES_KEY *key);
     95 void AES_decrypt(const unsigned char *in, unsigned char *out,
     96 	const AES_KEY *key);
     97 
     98 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
     99 	const AES_KEY *key, const int enc);
    100 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
    101 	size_t length, const AES_KEY *key,
    102 	unsigned char *ivec, const int enc);
    103 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
    104 	size_t length, const AES_KEY *key,
    105 	unsigned char *ivec, int *num, const int enc);
    106 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
    107 	size_t length, const AES_KEY *key,
    108 	unsigned char *ivec, int *num, const int enc);
    109 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
    110 	size_t length, const AES_KEY *key,
    111 	unsigned char *ivec, int *num, const int enc);
    112 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
    113 	size_t length, const AES_KEY *key,
    114 	unsigned char *ivec, int *num);
    115 void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
    116 	size_t length, const AES_KEY *key,
    117 	unsigned char ivec[AES_BLOCK_SIZE],
    118 	unsigned char ecount_buf[AES_BLOCK_SIZE],
    119 	unsigned int *num);
    120 /* NB: the IV is _two_ blocks long */
    121 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
    122 		     size_t length, const AES_KEY *key,
    123 		     unsigned char *ivec, const int enc);
    124 /* NB: the IV is _four_ blocks long */
    125 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
    126 			size_t length, const AES_KEY *key,
    127 			const AES_KEY *key2, const unsigned char *ivec,
    128 			const int enc);
    129 
    130 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
    131 		unsigned char *out,
    132 		const unsigned char *in, unsigned int inlen);
    133 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
    134 		unsigned char *out,
    135 		const unsigned char *in, unsigned int inlen);
    136 
    137 
    138 #ifdef  __cplusplus
    139 }
    140 #endif
    141 
    142 #endif /* !HEADER_AES_H */
    143