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1 | /* -*-c-*- |
2 | * |
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3 | * Generate tables for Whirlpool hash function |
4 | * |
5 | * (c) 2005 Straylight/Edgeware |
6 | */ |
7 | |
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8 | /*----- Licensing notice --------------------------------------------------* |
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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. |
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16 | * |
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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. |
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21 | * |
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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 <assert.h> |
31 | #include <stdio.h> |
32 | #include <stdlib.h> |
33 | |
34 | #include <mLib/bits.h> |
35 | |
36 | /*----- Static variables --------------------------------------------------*/ |
37 | |
38 | static const octet E[] = { |
39 | 0x1, 0xb, 0x9, 0xc, 0xd, 0x6, 0xf, 0x3, |
40 | 0xe, 0x8, 0x7, 0x4, 0xa, 0x2, 0x5, 0x0 |
41 | }, R[] = { |
42 | 0x7, 0xc, 0xb, 0xd, 0xe, 0x4, 0x9, 0xf, |
43 | 0x6, 0x3, 0x8, 0xa, 0x2, 0x5, 0x1, 0x0 |
44 | }, C[] = { |
45 | 0x1, 0x1, 0x4, 0x1, 0x8, 0x5, 0x2, 0x9 |
46 | }; |
47 | |
48 | static octet S[256], T[256][8], log[256], alog[256]; |
49 | |
50 | /*----- Main code ---------------------------------------------------------*/ |
51 | |
52 | #define S_MOD 0x11d |
53 | |
54 | static void logtable(void) |
55 | { |
56 | unsigned i, x; |
57 | |
58 | for (i = 0, x = 1; i < 255; i++) { |
59 | log[x] = i; |
60 | alog[i] = x; |
61 | x <<= 1; |
62 | if (x & 0x100) x ^= S_MOD; |
63 | } |
64 | } |
65 | |
66 | static octet mul(octet x, octet y) |
67 | { if (!x || !y) return (0); return (alog[(log[x] + log[y]) % 255]); } |
68 | |
69 | static void sbox(void) |
70 | { |
71 | unsigned i, j; |
72 | octet EI[16]; |
73 | octet l, r, y; |
74 | |
75 | for (i = 0; i < 16; i++) EI[E[i]] = i; |
76 | for (i = 0; i < 256; i++) { |
77 | l = (i >> 4) & 0xf; |
78 | r = (i >> 0) & 0xf; |
79 | l = E[l]; r = EI[r]; |
80 | y = R[l ^ r]; |
81 | l = E[l ^ y]; r = EI[r ^ y]; |
82 | S[i] = (l << 4) | r; |
83 | } |
84 | |
85 | for (i = 0; i < 256; i++) { |
86 | for (j = 0; j < 8; j++) |
87 | T[i][j] = mul(S[i], C[j]); |
88 | } |
89 | } |
90 | |
91 | static unsigned long w32(int i, int j, int k) |
92 | { |
93 | kludge64 x; |
94 | LOAD64_L_(x, T[j]); |
95 | ROL64_(x, x, i * 8); |
96 | return (k ? LO64(x) : HI64(x)); |
97 | } |
98 | |
99 | int main(void) |
100 | { |
101 | int i, j; |
102 | |
103 | puts("\ |
104 | /* -*-c-*-\n\ |
105 | *\n\ |
106 | * Whirlpool tables [generated]\n\ |
107 | */\n\ |
108 | \n\ |
109 | #ifndef CATACOMB_WHIRLPOOL_TAB_H\n\ |
110 | #define CATACOMB_WHIRLPOOL_TAB_H\n\ |
111 | "); |
112 | |
113 | /* --- Write out the S-box --- */ |
114 | |
115 | logtable(); |
116 | sbox(); |
117 | fputs("\ |
118 | /* --- The byte substitution --- */\n\ |
119 | \n\ |
120 | #define WHIRLPOOL_S { \\\n\ |
121 | ", stdout); |
122 | for (i = 0; i < 256; i++) { |
123 | printf("0x%02x", S[i]); |
124 | if (i == 255) |
125 | fputs(" \\\n}\n\n", stdout); |
126 | else if (i % 8 == 7) |
127 | fputs(", \\\n ", stdout); |
128 | else |
129 | fputs(", ", stdout); |
130 | } |
131 | |
132 | /* --- Write out the key constant tables --- */ |
133 | |
134 | fputs("\ |
135 | /* --- The key generation constants --- */\n\ |
136 | \n\ |
137 | #define WHIRLPOOL_C { \\\n\ |
138 | ", stdout); |
139 | for (i = 0; i < 10; i++) { |
140 | printf("X64(%08lx, %08lx)", |
141 | (unsigned long)LOAD32_L(&S[i * 8 + 4]), |
142 | (unsigned long)LOAD32_L(&S[i * 8 + 0])); |
143 | if (i == 9) |
144 | fputs(" \\\n}\n\n", stdout); |
145 | else if (i % 2 == 1) |
146 | fputs(", \\\n ", stdout); |
147 | else |
148 | fputs(", ", stdout); |
149 | } |
150 | |
151 | /* --- Write out the big T tables --- */ |
152 | |
153 | fputs("\ |
154 | /* --- The 64-bit big round tables --- */\n\ |
155 | \n\ |
156 | #define WHIRLPOOL_T { \\\n\ |
157 | { ", stdout); |
158 | for (j = 0; j < 8; j++) { |
159 | for (i = 0; i < 256; i++) { |
160 | printf("X64(%08lx, %08lx)", w32(j, i, 0), w32(j, i, 1)); |
161 | if (i == 255) { |
162 | if (j == 7) |
163 | fputs(" } \\\n}\n\n", stdout); |
164 | else |
165 | fputs(" }, \\\n\ |
166 | \\\n\ |
167 | { ", stdout); |
168 | } else if (i % 2 == 1) |
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169 | fputs(", \\\n ", stdout); |
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170 | else |
171 | fputs(", ", stdout); |
172 | } |
173 | } |
174 | |
175 | /* --- Write out the smaller U and V tables --- */ |
176 | |
177 | fputs("\ |
178 | /* --- The 32-bit round tables --- */\n\ |
179 | \n\ |
180 | #define WHIRLPOOL_U { \\\n\ |
181 | { ", stdout); |
182 | for (j = 0; j < 4; j++) { |
183 | for (i = 0; i < 256; i++) { |
184 | printf("0x%08lx", w32(j, i, 1)); |
185 | if (i == 255) { |
186 | if (j == 3) |
187 | fputs(" } \\\n}\n\n", stdout); |
188 | else |
189 | fputs(" }, \\\n\ |
190 | \\\n\ |
191 | { ", stdout); |
192 | } else if (i % 4 == 3) |
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193 | fputs(", \\\n ", stdout); |
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194 | else |
195 | fputs(", ", stdout); |
196 | } |
197 | } |
198 | |
199 | fputs("\ |
200 | #define WHIRLPOOL_V { \\\n\ |
201 | { ", stdout); |
202 | for (j = 0; j < 4; j++) { |
203 | for (i = 0; i < 256; i++) { |
204 | printf("0x%08lx", w32(j, i, 0)); |
205 | if (i == 255) { |
206 | if (j == 3) |
207 | fputs(" } \\\n}\n\n", stdout); |
208 | else |
209 | fputs(" }, \\\n\ |
210 | \\\n\ |
211 | { ", stdout); |
212 | } else if (i % 4 == 3) |
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213 | fputs(", \\\n ", stdout); |
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214 | else |
215 | fputs(", ", stdout); |
216 | } |
217 | } |
218 | |
219 | /* --- Done --- */ |
220 | |
221 | puts("#endif"); |
222 | |
223 | if (fclose(stdout)) { |
224 | fprintf(stderr, "error writing data\n"); |
225 | exit(EXIT_FAILURE); |
226 | } |
227 | |
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228 | return (0); |
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229 | } |
230 | |
231 | /*----- That's all, folks -------------------------------------------------*/ |