13aebbbf |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: safer-mktab.c,v 1.1 2001/04/29 17:49:54 mdw Exp $ |
4 | * |
5 | * Generate tables for SAFER |
6 | * |
7 | * (c) 2001 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 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: safer-mktab.c,v $ |
33 | * Revision 1.1 2001/04/29 17:49:54 mdw |
34 | * Added SAFER block cipher. |
35 | * |
36 | */ |
37 | |
38 | /*----- Header files ------------------------------------------------------*/ |
39 | |
40 | #include <stdio.h> |
41 | #include <stdlib.h> |
42 | |
43 | #include <mLib/bits.h> |
44 | |
45 | /*----- Main code ---------------------------------------------------------*/ |
46 | |
47 | int main(void) |
48 | { |
49 | octet s[256], si[256]; |
50 | unsigned x, i; |
51 | |
52 | x = 1; |
53 | for (i = 0; i < 256; i++) { |
54 | if (x < 256) { |
55 | s[i] = x; |
56 | si[x] = i; |
57 | } |
58 | x = (x * 45)%257; |
59 | } |
60 | s[128] = 0; |
61 | si[0] = 128; |
62 | |
63 | fputs("\ |
64 | /* -*-c-*-\n\ |
65 | *\n\ |
66 | * SAFER tables [generated]\n\ |
67 | */\n\ |
68 | \n\ |
69 | #ifndef CATACOMB_SAFER_TAB_H\n\ |
70 | #define CATACOMB_SAFER_TAB_H\n\ |
71 | \n\ |
72 | ", stdout); |
73 | |
74 | fputs("\ |
75 | /* --- S-boxes --- */\n\ |
76 | \n\ |
77 | #define SAFER_S { \\\n\ |
78 | ", stdout); |
79 | for (i = 0; i < 256; i++) { |
80 | printf("0x%02x", s[i]); |
81 | if (i == 255) |
82 | fputs(" \\\n}\n\n", stdout); |
83 | else if ((i + 1)%8 == 0) |
84 | fputs(", \\\n ", stdout); |
85 | else |
86 | fputs(", ", stdout); |
87 | } |
88 | |
89 | fputs("\ |
90 | #define SAFER_SI { \\\n\ |
91 | ", stdout); |
92 | for (i = 0; i < 256; i++) { |
93 | printf("0x%02x", si[i]); |
94 | if (i == 255) |
95 | fputs(" \\\n}\n\n", stdout); |
96 | else if ((i + 1)%8 == 0) |
97 | fputs(", \\\n ", stdout); |
98 | else |
99 | fputs(", ", stdout); |
100 | } |
101 | |
102 | puts("#endif"); |
103 | |
104 | if (fclose(stdout)) { |
105 | fprintf(stderr, "error writing data\n"); |
106 | exit(EXIT_FAILURE); |
107 | } |
108 | |
109 | return (0); |
110 | } |
111 | |
112 | /*----- That's all, folks -------------------------------------------------*/ |