include/openssl/aes.h

   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,
  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 #define AES_ENCRYPT     1
  62 #define AES_DECRYPT     0
  63
  64 /* Because array size can't be a const in C, the following two are macros.
  65    Both sizes are in bytes. */
  66 #define AES_MAXNR 14
  67 #define AES_BLOCK_SIZE 16
  68
  69 #ifdef  __cplusplus
  70 extern "C" {
  71 #endif
  72
  73 /* This should be a hidden type, but EVP requires that the size be known */
  74 struct aes_key_st {
  75 #ifdef AES_LONG
  76     unsigned long rd_key[4 *(AES_MAXNR + 1)];
  77 #else
  78     unsigned int rd_key[4 *(AES_MAXNR + 1)];
  79 #endif
  80     int rounds;
  81 };
  82 typedef struct aes_key_st AES_KEY;
  83
  84 const char *AES_options(void);
  85
  86 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
  87         AES_KEY *key);
  88 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
  89         AES_KEY *key);
  90
  91 void AES_encrypt(const unsigned char *in, unsigned char *out,
  92         const AES_KEY *key);
  93 void AES_decrypt(const unsigned char *in, unsigned char *out,
  94         const AES_KEY *key);
  95
  96 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
  97         const AES_KEY *key, const int enc);
  98 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
  99         const unsigned long length, const AES_KEY *key,
 100         unsigned char *ivec, const int enc);
 101 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
 102         const unsigned long length, const AES_KEY *key,
 103         unsigned char *ivec, int *num, const int enc);
 104 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
 105         const unsigned long length, const AES_KEY *key,
 106         unsigned char *ivec, int *num, const int enc);
 107 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
 108         const unsigned long length, const AES_KEY *key,
 109         unsigned char *ivec, int *num, const int enc);
 110 void AES_cfbr_encrypt_block(const unsigned char *in,unsigned char *out,
 111                             const int nbits,const AES_KEY *key,
 112                             unsigned char *ivec,const int enc);
 113 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
 114         const unsigned long length, const AES_KEY *key,
 115         unsigned char *ivec, int *num);
 116 void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
 117         const unsigned long length, const AES_KEY *key,
 118         unsigned char ivec[AES_BLOCK_SIZE],
 119         unsigned char ecount_buf[AES_BLOCK_SIZE],
 120         unsigned int *num);
 121
 122 /* For IGE, see also http://www.links.org/files/openssl-ige.pdf */
 123 /* NB: the IV is _two_ blocks long */
 124 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
 125                      const unsigned long length, const AES_KEY *key,
 126                      unsigned char *ivec, const int enc);
 127 /* NB: the IV is _four_ blocks long */
 128 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
 129                         const unsigned long length, const AES_KEY *key,
 130                         const AES_KEY *key2, const unsigned char *ivec,
 131                         const int enc);
 132
 133
 134 #ifdef  __cplusplus
 135 }
 136 #endif
 137
 138 #endif /* !HEADER_AES_H */