13aebbbf |
1 | /* -*-c-*- |
2 | * |
13aebbbf |
3 | * Generate tables for SAFER |
4 | * |
5 | * (c) 2001 Straylight/Edgeware |
6 | */ |
7 | |
45c0fd36 |
8 | /*----- Licensing notice --------------------------------------------------* |
13aebbbf |
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. |
45c0fd36 |
16 | * |
13aebbbf |
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. |
45c0fd36 |
21 | * |
13aebbbf |
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 | |
13aebbbf |
28 | /*----- Header files ------------------------------------------------------*/ |
29 | |
30 | #include <stdio.h> |
31 | #include <stdlib.h> |
32 | |
33 | #include <mLib/bits.h> |
34 | |
35 | /*----- Main code ---------------------------------------------------------*/ |
36 | |
37 | int main(void) |
38 | { |
39 | octet s[256], si[256]; |
40 | unsigned x, i; |
41 | |
42 | x = 1; |
43 | for (i = 0; i < 256; i++) { |
44 | if (x < 256) { |
45 | s[i] = x; |
46 | si[x] = i; |
47 | } |
48 | x = (x * 45)%257; |
49 | } |
50 | s[128] = 0; |
51 | si[0] = 128; |
52 | |
53 | fputs("\ |
54 | /* -*-c-*-\n\ |
55 | *\n\ |
56 | * SAFER tables [generated]\n\ |
57 | */\n\ |
58 | \n\ |
59 | #ifndef CATACOMB_SAFER_TAB_H\n\ |
60 | #define CATACOMB_SAFER_TAB_H\n\ |
61 | \n\ |
62 | ", stdout); |
63 | |
64 | fputs("\ |
65 | /* --- S-boxes --- */\n\ |
66 | \n\ |
67 | #define SAFER_S { \\\n\ |
68 | ", stdout); |
69 | for (i = 0; i < 256; i++) { |
70 | printf("0x%02x", s[i]); |
71 | if (i == 255) |
72 | fputs(" \\\n}\n\n", stdout); |
73 | else if ((i + 1)%8 == 0) |
74 | fputs(", \\\n ", stdout); |
75 | else |
76 | fputs(", ", stdout); |
77 | } |
78 | |
79 | fputs("\ |
80 | #define SAFER_SI { \\\n\ |
81 | ", stdout); |
82 | for (i = 0; i < 256; i++) { |
83 | printf("0x%02x", si[i]); |
84 | if (i == 255) |
85 | fputs(" \\\n}\n\n", stdout); |
86 | else if ((i + 1)%8 == 0) |
87 | fputs(", \\\n ", stdout); |
88 | else |
89 | fputs(", ", stdout); |
90 | } |
91 | |
92 | puts("#endif"); |
93 | |
94 | if (fclose(stdout)) { |
95 | fprintf(stderr, "error writing data\n"); |
96 | exit(EXIT_FAILURE); |
97 | } |
98 | |
45c0fd36 |
99 | return (0); |
13aebbbf |
100 | } |
101 | |
102 | /*----- That's all, folks -------------------------------------------------*/ |