| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * Generate S-boxes for the Tiger hash function |
| 4 | * |
| 5 | * (c) 2000 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 | /*----- Header files ------------------------------------------------------*/ |
| 29 | |
| 30 | #include <mLib/bits.h> |
| 31 | |
| 32 | #include <stdio.h> |
| 33 | #include <stdlib.h> |
| 34 | |
| 35 | #include "tiger-base.h" |
| 36 | |
| 37 | /*----- Static variables --------------------------------------------------*/ |
| 38 | |
| 39 | static kludge64 tiger_s[4][256]; |
| 40 | |
| 41 | /*----- Main code ---------------------------------------------------------*/ |
| 42 | |
| 43 | /* --- The basic Tiger compression function --- */ |
| 44 | |
| 45 | static void tiger(kludge64 *x, kludge64 *ss) |
| 46 | { |
| 47 | TIGER_CORE(ss[0], ss[1], ss[2], x); |
| 48 | } |
| 49 | |
| 50 | /* --- The S-box generator --- */ |
| 51 | |
| 52 | void gen(const char *buf, unsigned passes) |
| 53 | { |
| 54 | kludge64 x[8], ss[3]; |
| 55 | unsigned i, j, k, b; |
| 56 | unsigned q, n; |
| 57 | uint32 t; |
| 58 | const char *p; |
| 59 | |
| 60 | for (i = 0; i < 256; i++) { |
| 61 | for (j = 0; j < 4; j++) { |
| 62 | uint32 z = 0x01010101 * i; |
| 63 | SET64(tiger_s[j][i], z, z); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | SET64(ss[0], 0x01234567, 0x89abcdef); |
| 68 | SET64(ss[1], 0xfedcba98, 0x76543210); |
| 69 | SET64(ss[2], 0xf096a5b4, 0xc3b2e187); |
| 70 | |
| 71 | q = 2; |
| 72 | for (i = 0; i < passes; i++) { |
| 73 | for (j = 0; j < 256; j++) { |
| 74 | for (k = 0; k < 4; k++) { |
| 75 | q++; |
| 76 | if (q == 3) { |
| 77 | q = 0; |
| 78 | for (p = buf, n = 0; n < 8; n++, p += 8) |
| 79 | LOAD64_L_(x[n], p); |
| 80 | tiger(x, ss); |
| 81 | } |
| 82 | for (b = 0; b < 32; b += 8) { |
| 83 | n = U8(LO64(ss[q]) >> b); |
| 84 | t = (LO64(tiger_s[k][j]) ^ LO64(tiger_s[k][n])) & (0xff << b); |
| 85 | SET64(tiger_s[k][j], HI64(tiger_s[k][j]), LO64(tiger_s[k][j]) ^ t); |
| 86 | SET64(tiger_s[k][n], HI64(tiger_s[k][n]), LO64(tiger_s[k][n]) ^ t); |
| 87 | } |
| 88 | for (b = 0; b < 32; b += 8) { |
| 89 | n = U8(HI64(ss[q]) >> b); |
| 90 | t = (HI64(tiger_s[k][j]) ^ HI64(tiger_s[k][n])) & (0xff << b); |
| 91 | SET64(tiger_s[k][j], HI64(tiger_s[k][j]) ^ t, LO64(tiger_s[k][j])); |
| 92 | SET64(tiger_s[k][n], HI64(tiger_s[k][n]) ^ t, LO64(tiger_s[k][n])); |
| 93 | } |
| 94 | } |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | int main(void) |
| 100 | { |
| 101 | unsigned i, j; |
| 102 | |
| 103 | gen("Tiger - A Fast New Hash Function, by Ross Anderson and Eli Biham", 5); |
| 104 | |
| 105 | fputs("\ |
| 106 | /* -*-c-*-\n\ |
| 107 | *\n\ |
| 108 | * S-boxes for Tiger [generated]\n\ |
| 109 | */\n\ |
| 110 | \n\ |
| 111 | #include <mLib/bits.h>\n\ |
| 112 | \n\ |
| 113 | const kludge64 tiger_s[4][256] = {\n\ |
| 114 | { ", stdout); |
| 115 | |
| 116 | for (i = 0; i < 4; i++) { |
| 117 | for (j = 0; j < 256; j++) { |
| 118 | printf("X64(%08lx, %08lx)", |
| 119 | (unsigned long)HI64(tiger_s[i][j]), |
| 120 | (unsigned long)LO64(tiger_s[i][j])); |
| 121 | if (j == 255) { |
| 122 | if (i == 3) |
| 123 | fputs(" }\n};\n", stdout); |
| 124 | else |
| 125 | fputs(" },\n\n { ", stdout); |
| 126 | } else if (j % 2 == 1) |
| 127 | fputs(",\n ", stdout); |
| 128 | else |
| 129 | fputs(", ", stdout); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | if (fclose(stdout)) { |
| 134 | fprintf(stderr, "error writing data\n"); |
| 135 | exit(EXIT_FAILURE); |
| 136 | } |
| 137 | |
| 138 | return (0); |
| 139 | } |
| 140 | |
| 141 | /*----- That's all, folks -------------------------------------------------*/ |