git.distorted.org.uk Git - u/mdw/catacomb/blob - symm/rijndael256.h

   1 /* -*-c-*-
   2  *
   3  * The Rijndael block cipher, 256-bit version
   4  *
   5  * (c) 2001 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of Catacomb.
  11  *
  12  * Catacomb is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU Library General Public License as
  14  * published by the Free Software Foundation; either version 2 of the
  15  * License, or (at your option) any later version.
  16  *
  17  * Catacomb is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU Library General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Library General Public
  23  * License along with Catacomb; if not, write to the Free
  24  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  25  * MA 02111-1307, USA.
  26  */
  27
  28 #ifndef CATACOMB_RIJNDAEL256_H
  29 #define CATACOMB_RIJNDAEL256_H
  30
  31 #ifdef __cplusplus
  32   extern "C" {
  33 #endif
  34
  35 /*----- Header files ------------------------------------------------------*/
  36
  37 #ifndef CATACOMB_RIJNDAEL_H
  38 #  include "rijndael.h"
  39 #endif
  40
  41 /*----- Magical numbers ---------------------------------------------------*/
  42
  43 #define RIJNDAEL256_BLKSZ 32
  44 #define RIJNDAEL256_KEYSZ 32
  45 #define RIJNDAEL256_CLASS (N, B, 256)
  46
  47 #define rijndael256_keysz rijndael_keysz
  48
  49 /*----- Data structures ---------------------------------------------------*/
  50
  51 typedef struct rijndael_ctx rijndael256_ctx;
  52
  53 /*----- Functions provided ------------------------------------------------*/
  54
  55 /* --- @rijndael256_init@ --- *
  56  *
  57  * Arguments:   @rijndael_ctx *k@ = pointer to context to initialize
  58  *              @const void *buf@ = pointer to buffer of key material
  59  *              @size_t sz@ = size of the key material
  60  *
  61  * Returns:     ---
  62  *
  63  * Use:         Initializes a Rijndael context with a particular key.  This
  64  *              implementation of Rijndael doesn't impose any particular
  65  *              limits on the key size except that it must be multiple of 4
  66  *              bytes long.  256 bits seems sensible, though.
  67  */
  68
  69 extern void rijndael256_init(rijndael_ctx */*k*/,
  70                           const void */*buf*/, size_t /*sz*/);
  71
  72 /* --- @rijndael_eblk@, @rijndael_dblk@ --- *
  73  *
  74  * Arguments:   @const rijndael_ctx *k@ = pointer to Rijndael context
  75  *              @const uint32 s[4]@ = pointer to source block
  76  *              @uint32 d[4]@ = pointer to destination block
  77  *
  78  * Returns:     ---
  79  *
  80  * Use:         Low-level block encryption and decryption.
  81  */
  82
  83 extern void rijndael256_eblk(const rijndael_ctx */*k*/,
  84                              const uint32 */*s*/, uint32 */*dst*/);
  85 extern void rijndael256_dblk(const rijndael_ctx */*k*/,
  86                              const uint32 */*s*/, uint32 */*dst*/);
  87
  88 /*----- That's all, folks -------------------------------------------------*/
  89
  90 #ifdef __cplusplus
  91   }
  92 #endif
  93
  94 #endif