crypto/aes/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 # include <stddef.h>
  62
  63 # define AES_ENCRYPT     1
  64 # define AES_DECRYPT     0
  65
  66 /*
  67  * Because array size can't be a const in C, the following two are macros.
  68  * Both sizes are in bytes.
  69  */
  70 # define AES_MAXNR 14
  71 # define AES_BLOCK_SIZE 16
  72
  73 #ifdef  __cplusplus
  74 extern "C" {
  75 #endif
  76
  77 /* This should be a hidden type, but EVP requires that the size be known */
  78 struct aes_key_st {
  79 # ifdef AES_LONG
  80     unsigned long rd_key[4 * (AES_MAXNR + 1)];
  81 # else
  82     unsigned int rd_key[4 * (AES_MAXNR + 1)];
  83 # endif
  84     int rounds;
  85 };
  86 typedef struct aes_key_st AES_KEY;
  87
  88 const char *AES_options(void);
  89
  90 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
  91                         AES_KEY *key);
  92 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
  93                         AES_KEY *key);
  94
  95 void AES_encrypt(const unsigned char *in, unsigned char *out,
  96                  const AES_KEY *key);
  97 void AES_decrypt(const unsigned char *in, unsigned char *out,
  98                  const AES_KEY *key);
  99
 100 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
 101                      const AES_KEY *key, const int enc);
 102 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
 103                      size_t length, const AES_KEY *key,
 104                      unsigned char *ivec, const int enc);
 105 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
 106                         size_t length, const AES_KEY *key,
 107                         unsigned char *ivec, int *num, const int enc);
 108 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
 109                       size_t length, const AES_KEY *key,
 110                       unsigned char *ivec, int *num, const int enc);
 111 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
 112                       size_t length, const AES_KEY *key,
 113                       unsigned char *ivec, int *num, const int enc);
 114 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
 115                         size_t length, const AES_KEY *key,
 116                         unsigned char *ivec, int *num);
 117 # if 0
 118 void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
 119                         size_t length, const AES_KEY *key,
 120                         unsigned char ivec[AES_BLOCK_SIZE],
 121                         unsigned char ecount_buf[AES_BLOCK_SIZE],
 122                         unsigned int *num);
 123 # endif
 124 /* NB: the IV is _two_ blocks long */
 125 void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
 126                      size_t length, const AES_KEY *key,
 127                      unsigned char *ivec, const int enc);
 128 /* NB: the IV is _four_ blocks long */
 129 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
 130                         size_t length, const AES_KEY *key,
 131                         const AES_KEY *key2, const unsigned char *ivec,
 132                         const int enc);
 133
 134 int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
 135                  unsigned char *out,
 136                  const unsigned char *in, unsigned int inlen);
 137 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
 138                    unsigned char *out,
 139                    const unsigned char *in, unsigned int inlen);
 140
 141
 142 #ifdef  __cplusplus
 143 }
 144 #endif
 145
 146 #endif                          /* !HEADER_AES_H */