| 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 |