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1 | /* -*-c-*- |
2 | * |
3 | * $Id$ |
4 | * |
5 | * Generate tables for Whirlpool hash function |
6 | * |
7 | * (c) 2005 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 | /*----- Header files ------------------------------------------------------*/ |
31 | |
32 | #include <assert.h> |
33 | #include <stdio.h> |
34 | #include <stdlib.h> |
35 | |
36 | #include <mLib/bits.h> |
37 | |
38 | /*----- Static variables --------------------------------------------------*/ |
39 | |
40 | static const octet E[] = { |
41 | 0x1, 0xb, 0x9, 0xc, 0xd, 0x6, 0xf, 0x3, |
42 | 0xe, 0x8, 0x7, 0x4, 0xa, 0x2, 0x5, 0x0 |
43 | }, R[] = { |
44 | 0x7, 0xc, 0xb, 0xd, 0xe, 0x4, 0x9, 0xf, |
45 | 0x6, 0x3, 0x8, 0xa, 0x2, 0x5, 0x1, 0x0 |
46 | }, C[] = { |
47 | 0x1, 0x1, 0x4, 0x1, 0x8, 0x5, 0x2, 0x9 |
48 | }; |
49 | |
50 | static octet S[256], T[256][8], log[256], alog[256]; |
51 | |
52 | /*----- Main code ---------------------------------------------------------*/ |
53 | |
54 | #define S_MOD 0x11d |
55 | |
56 | static void logtable(void) |
57 | { |
58 | unsigned i, x; |
59 | |
60 | for (i = 0, x = 1; i < 255; i++) { |
61 | log[x] = i; |
62 | alog[i] = x; |
63 | x <<= 1; |
64 | if (x & 0x100) x ^= S_MOD; |
65 | } |
66 | } |
67 | |
68 | static octet mul(octet x, octet y) |
69 | { if (!x || !y) return (0); return (alog[(log[x] + log[y]) % 255]); } |
70 | |
71 | static void sbox(void) |
72 | { |
73 | unsigned i, j; |
74 | octet EI[16]; |
75 | octet l, r, y; |
76 | |
77 | for (i = 0; i < 16; i++) EI[E[i]] = i; |
78 | for (i = 0; i < 256; i++) { |
79 | l = (i >> 4) & 0xf; |
80 | r = (i >> 0) & 0xf; |
81 | l = E[l]; r = EI[r]; |
82 | y = R[l ^ r]; |
83 | l = E[l ^ y]; r = EI[r ^ y]; |
84 | S[i] = (l << 4) | r; |
85 | } |
86 | |
87 | for (i = 0; i < 256; i++) { |
88 | for (j = 0; j < 8; j++) |
89 | T[i][j] = mul(S[i], C[j]); |
90 | } |
91 | } |
92 | |
93 | static unsigned long w32(int i, int j, int k) |
94 | { |
95 | kludge64 x; |
96 | LOAD64_L_(x, T[j]); |
97 | ROL64_(x, x, i * 8); |
98 | return (k ? LO64(x) : HI64(x)); |
99 | } |
100 | |
101 | int main(void) |
102 | { |
103 | int i, j; |
104 | |
105 | puts("\ |
106 | /* -*-c-*-\n\ |
107 | *\n\ |
108 | * Whirlpool tables [generated]\n\ |
109 | */\n\ |
110 | \n\ |
111 | #ifndef CATACOMB_WHIRLPOOL_TAB_H\n\ |
112 | #define CATACOMB_WHIRLPOOL_TAB_H\n\ |
113 | "); |
114 | |
115 | /* --- Write out the S-box --- */ |
116 | |
117 | logtable(); |
118 | sbox(); |
119 | fputs("\ |
120 | /* --- The byte substitution --- */\n\ |
121 | \n\ |
122 | #define WHIRLPOOL_S { \\\n\ |
123 | ", stdout); |
124 | for (i = 0; i < 256; i++) { |
125 | printf("0x%02x", S[i]); |
126 | if (i == 255) |
127 | fputs(" \\\n}\n\n", stdout); |
128 | else if (i % 8 == 7) |
129 | fputs(", \\\n ", stdout); |
130 | else |
131 | fputs(", ", stdout); |
132 | } |
133 | |
134 | /* --- Write out the key constant tables --- */ |
135 | |
136 | fputs("\ |
137 | /* --- The key generation constants --- */\n\ |
138 | \n\ |
139 | #define WHIRLPOOL_C { \\\n\ |
140 | ", stdout); |
141 | for (i = 0; i < 10; i++) { |
142 | printf("X64(%08lx, %08lx)", |
143 | (unsigned long)LOAD32_L(&S[i * 8 + 4]), |
144 | (unsigned long)LOAD32_L(&S[i * 8 + 0])); |
145 | if (i == 9) |
146 | fputs(" \\\n}\n\n", stdout); |
147 | else if (i % 2 == 1) |
148 | fputs(", \\\n ", stdout); |
149 | else |
150 | fputs(", ", stdout); |
151 | } |
152 | |
153 | /* --- Write out the big T tables --- */ |
154 | |
155 | fputs("\ |
156 | /* --- The 64-bit big round tables --- */\n\ |
157 | \n\ |
158 | #define WHIRLPOOL_T { \\\n\ |
159 | { ", stdout); |
160 | for (j = 0; j < 8; j++) { |
161 | for (i = 0; i < 256; i++) { |
162 | printf("X64(%08lx, %08lx)", w32(j, i, 0), w32(j, i, 1)); |
163 | if (i == 255) { |
164 | if (j == 7) |
165 | fputs(" } \\\n}\n\n", stdout); |
166 | else |
167 | fputs(" }, \\\n\ |
168 | \\\n\ |
169 | { ", stdout); |
170 | } else if (i % 2 == 1) |
171 | fputs(", \\\n ", stdout); |
172 | else |
173 | fputs(", ", stdout); |
174 | } |
175 | } |
176 | |
177 | /* --- Write out the smaller U and V tables --- */ |
178 | |
179 | fputs("\ |
180 | /* --- The 32-bit round tables --- */\n\ |
181 | \n\ |
182 | #define WHIRLPOOL_U { \\\n\ |
183 | { ", stdout); |
184 | for (j = 0; j < 4; j++) { |
185 | for (i = 0; i < 256; i++) { |
186 | printf("0x%08lx", w32(j, i, 1)); |
187 | if (i == 255) { |
188 | if (j == 3) |
189 | fputs(" } \\\n}\n\n", stdout); |
190 | else |
191 | fputs(" }, \\\n\ |
192 | \\\n\ |
193 | { ", stdout); |
194 | } else if (i % 4 == 3) |
195 | fputs(", \\\n ", stdout); |
196 | else |
197 | fputs(", ", stdout); |
198 | } |
199 | } |
200 | |
201 | fputs("\ |
202 | #define WHIRLPOOL_V { \\\n\ |
203 | { ", stdout); |
204 | for (j = 0; j < 4; j++) { |
205 | for (i = 0; i < 256; i++) { |
206 | printf("0x%08lx", w32(j, i, 0)); |
207 | if (i == 255) { |
208 | if (j == 3) |
209 | fputs(" } \\\n}\n\n", stdout); |
210 | else |
211 | fputs(" }, \\\n\ |
212 | \\\n\ |
213 | { ", stdout); |
214 | } else if (i % 4 == 3) |
215 | fputs(", \\\n ", stdout); |
216 | else |
217 | fputs(", ", stdout); |
218 | } |
219 | } |
220 | |
221 | /* --- Done --- */ |
222 | |
223 | puts("#endif"); |
224 | |
225 | if (fclose(stdout)) { |
226 | fprintf(stderr, "error writing data\n"); |
227 | exit(EXIT_FAILURE); |
228 | } |
229 | |
230 | return (0); |
231 | } |
232 | |
233 | /*----- That's all, folks -------------------------------------------------*/ |