include/openssl/aes.h

   1 /* ====================================================================
   2  * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  *
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *    the documentation and/or other materials provided with the
  14  *    distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgment:
  18  *    "This product includes software developed by the OpenSSL Project
  19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  20  *
  21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission. For written permission, please contact
  24  *    openssl-core@openssl.org.
  25  *
  26  * 5. Products derived from this software may not be called "OpenSSL"
  27  *    nor may "OpenSSL" appear in their names without prior written
  28  *    permission of the OpenSSL Project.
  29  *
  30  * 6. Redistributions of any form whatsoever must retain the following
  31  *    acknowledgment:
  32  *    "This product includes software developed by the OpenSSL Project
  33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  46  * OF THE POSSIBILITY OF SUCH DAMAGE.
  47  * ====================================================================
  48  *
  49  */
  50
  51 #ifndef HEADER_AES_H
  52 # define HEADER_AES_H
  53
  54 # include <openssl/opensslconf.h>
  55
  56 #ifndef OPENSSL_NO_AES
  57 # include <stddef.h>
  58 # ifdef  __cplusplus
  59 extern "C" {
  60 # endif
  61
  62 # define AES_ENCRYPT     1
  63 # define AES_DECRYPT     0
  64
  65 /*
  66  * Because array size can't be a const in C, the following two are macros.
  67  * Both sizes are in bytes.
  68  */
  69 # define AES_MAXNR 14
  70 # define AES_BLOCK_SIZE 16
  71
  72 /* This should be a hidden type, but EVP requires that the size be known */
  73 struct aes_key_st {
  74 # ifdef AES_LONG
  75     unsigned long rd_key[4 * (AES_MAXNR + 1)];
  76 # else
  77     unsigned int rd_key[4 * (AES_MAXNR + 1)];
  78 # endif
  79     int rounds;
  80 };
  81 typedef struct aes_key_st AES_KEY;
  82
  83 const char *AES_options(void);
  84
  85 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
  86                         AES_KEY *key);
  87 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
  88                         AES_KEY *key);
  89
  90 void AES_encrypt(const unsigned char *in, unsigned char *out,
  91                  const AES_KEY *key);
  92 void AES_decrypt(const unsigned char *in, unsigned char *out,
  93                  const AES_KEY *key);
  94
  95 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
  96                      const AES_KEY *key, const int enc);
  97 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
  98                      size_t length, const AES_KEY *key,
  99                      unsigned char *ivec, const int enc);
 100 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
 101                         size_t length, const AES_KEY *key,
 102                         unsigned char *ivec, int *num, const int enc);
 103 void AES_cfb1_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_cfb8_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_ofb128_encrypt(const unsigned char *in, unsigned char *out,
 110                         size_t length, const AES_KEY *key,
 111                         unsigned char *ivec, int *num);
 112 /* NB: the IV is _two_ blocks long */
 113 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
 114                      size_t length, const AES_KEY *key,
 115                      unsigned char *ivec, const int enc);
 116 /* NB: the IV is _four_ blocks long */
 117 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
 118                         size_t length, const AES_KEY *key,
 119                         const AES_KEY *key2, const unsigned char *ivec,
 120                         const int enc);
 121
 122 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
 123                  unsigned char *out,
 124                  const unsigned char *in, unsigned int inlen);
 125 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
 126                    unsigned char *out,
 127                    const unsigned char *in, unsigned int inlen);
 128
 129
 130 # ifdef  __cplusplus
 131 }
 132 # endif
 133 # endif
 134
 135 #endif