lib/crypto/aes.h

   1 /*
   2  * Copyright (c) 2003-2004 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 /* $Id$ */
  35
  36 #ifndef LIB_CRYPTO_AES_H
  37 #define LIB_CRYPTO_AES_H 1
  38
  39 /* symbol renaming */
  40 #define AES_set_encrypt_key samba_AES_set_encrypt_key
  41 #define AES_set_decrypt_key samba_AES_decrypt_key
  42 #define AES_encrypt samba_AES_encrypt
  43 #define AES_decrypt samba_AES_decrypt
  44 #define AES_cbc_encrypt samba_AES_cbc_encrypt
  45
  46 /*
  47  *
  48  */
  49
  50 #define AES_BLOCK_SIZE 16
  51 #define AES_MAXNR 14
  52
  53 #define AES_ENCRYPT 1
  54 #define AES_DECRYPT 0
  55
  56 typedef struct aes_key {
  57     uint32_t key[(AES_MAXNR+1)*4];
  58     int rounds;
  59 } AES_KEY;
  60
  61 #ifdef __cplusplus
  62 extern "C" {
  63 #endif
  64
  65 int AES_set_encrypt_key(const unsigned char *, const int, AES_KEY *);
  66 int AES_set_decrypt_key(const unsigned char *, const int, AES_KEY *);
  67
  68 void AES_encrypt(const unsigned char *, unsigned char *, const AES_KEY *);
  69 void AES_decrypt(const unsigned char *, unsigned char *, const AES_KEY *);
  70
  71 void AES_cbc_encrypt(const unsigned char *, unsigned char *,
  72                      const unsigned long, const AES_KEY *,
  73                      unsigned char *, int);
  74
  75 void aes_cfb8_encrypt(const uint8_t *in, uint8_t *out,
  76                       size_t length, const AES_KEY *key,
  77                       uint8_t *iv, int forward);
  78
  79 #ifdef  __cplusplus
  80 }
  81 #endif
  82
  83 #endif /* LIB_CRYPTO_AES_H */