git.distorted.org.uk Git - u/mdw/catacomb/blob - rijndael-base.h

   1 /* -*-c-*-
   2  *
   3  * $Id: rijndael-base.h,v 1.1 2001/05/07 17:31:37 mdw Exp $
   4  *
   5  * Internal header for Rijndael implementation
   6  *
   7  * (c) 2001 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 /*----- Revision history --------------------------------------------------*
  31  *
  32  * $Log: rijndael-base.h,v $
  33  * Revision 1.1  2001/05/07 17:31:37  mdw
  34  * Centralize Rijndael tables and key scheduling.
  35  *
  36  */
  37
  38 #ifndef CATACOMB_RIJNDAEL_BASE_H
  39 #define CATACOMB_RIJNDAEL_BASE_H
  40
  41 #ifdef __cplusplus
  42   extern "C" {
  43 #endif
  44
  45 /*----- Header files ------------------------------------------------------*/
  46
  47 #include <mLib/bits.h>
  48
  49 /*----- Constant tables ---------------------------------------------------*/
  50
  51 extern const octet rijndael_s[256];
  52 extern const octet rijndael_si[256];
  53 extern const uint32 rijndael_t[4][256];
  54 extern const uint32 rijndael_ti[4][256];
  55 extern const uint32 rijndael_u[4][256];
  56 extern const octet rijndael_rcon[];
  57
  58 #define S rijndael_s
  59 #define SI rijndael_si
  60 #define T rijndael_t
  61 #define TI rijndael_ti
  62 #define U rijndael_u
  63 #define RCON rijndael_rcon
  64
  65 /*----- Handy macros ------------------------------------------------------*/
  66
  67 #define SUB(s, a, b, c, d)                                              \
  68   (s[U8((a) >>  0)] <<  0 | s[U8((b) >>  8)] <<  8 |                    \
  69    s[U8((c) >> 16)] << 16 | s[U8((d) >> 24)] << 24)
  70
  71 #define MIX(t, a, b, c, d)                                              \
  72   (t[0][U8((a) >>  0)] ^ t[1][U8((b) >>  8)] ^                          \
  73    t[2][U8((c) >> 16)] ^ t[3][U8((d) >> 24)])
  74
  75 /*----- That's all, folks -------------------------------------------------*/
  76
  77 #ifdef __cplusplus
  78   }
  79 #endif
  80
  81 #endif