3 * $Id: tiger-mktab.c,v 1.2 2004/04/08 01:36:15 mdw Exp $
5 * Generate S-boxes for the Tiger hash function
7 * (c) 2000 Straylight/Edgeware
10 /*----- Licensing notice --------------------------------------------------*
12 * This file is part of Catacomb.
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.
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.
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,
30 /*----- Header files ------------------------------------------------------*/
32 #include <mLib/bits.h>
37 #include "tiger-base.h"
39 /*----- Data structures ---------------------------------------------------*/
41 /*----- Static variables --------------------------------------------------*/
43 static kludge64 s[4][256];
45 /*----- Main code ---------------------------------------------------------*/
47 /* --- The basic Tiger compression function --- */
49 static void tiger(kludge64 *x, kludge64 *ss)
51 TIGER_CORE(ss[0], ss[1], ss[2], x);
54 /* --- The S-box generator --- */
56 void gen(const char *buf, unsigned passes)
64 for (i = 0; i < 256; i++) {
65 for (j = 0; j < 4; j++) {
66 uint32 z = 0x01010101 * i;
71 SET64(ss[0], 0x01234567, 0x89abcdef);
72 SET64(ss[1], 0xfedcba98, 0x76543210);
73 SET64(ss[2], 0xf096a5b4, 0xc3b2e187);
76 for (i = 0; i < passes; i++) {
77 for (j = 0; j < 256; j++) {
78 for (k = 0; k < 4; k++) {
82 for (p = buf, n = 0; n < 8; n++, p += 8)
86 for (b = 0; b < 32; b += 8) {
87 n = U8(LO64(ss[q]) >> b);
88 t = (LO64(s[k][j]) ^ LO64(s[k][n])) & (0xff << b);
89 SET64(s[k][j], HI64(s[k][j]), LO64(s[k][j]) ^ t);
90 SET64(s[k][n], HI64(s[k][n]), LO64(s[k][n]) ^ t);
92 for (b = 0; b < 32; b += 8) {
93 n = U8(HI64(ss[q]) >> b);
94 t = (HI64(s[k][j]) ^ HI64(s[k][n])) & (0xff << b);
95 SET64(s[k][j], HI64(s[k][j]) ^ t, LO64(s[k][j]));
96 SET64(s[k][n], HI64(s[k][n]) ^ t, LO64(s[k][n]));
107 gen("Tiger - A Fast New Hash Function, by Ross Anderson and Eli Biham", 5);
112 * S-boxes for Tiger [generated]\n\
115 #ifndef CATACOMB_TIGER_TAB_H\n\
116 #define CATACOMB_TIGER_TAB_H\n\
118 #define TIGER_S { \\\n\
121 for (i = 0; i < 4; i++) {
122 for (j = 0; j < 256; j++) {
124 printf("{ 0x%016llxull }", s[i][j].i);
126 printf("{ 0x%08lx, 0x%08lx }",
127 (unsigned long)s[i][j].hi, (unsigned long)s[i][j].lo);
131 fputs(" } \\\n}\n", stdout);
136 } else if (j % 2 == 1)
137 fputs(", \\\n ", stdout);
143 fputs("\n#endif\n", stdout);
145 if (fclose(stdout)) {
146 fprintf(stderr, "error writing data\n");
153 /*----- That's all, folks -------------------------------------------------*/