+/* -*-c-*-
+ *
+ * $Id: safer-mktab.c,v 1.1 2001/04/29 17:49:54 mdw Exp $
+ *
+ * Generate tables for SAFER
+ *
+ * (c) 2001 Straylight/Edgeware
+ */
+
+/*----- Licensing notice --------------------------------------------------*
+ *
+ * This file is part of Catacomb.
+ *
+ * Catacomb is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * Catacomb is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with Catacomb; if not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ * MA 02111-1307, USA.
+ */
+
+/*----- Revision history --------------------------------------------------*
+ *
+ * $Log: safer-mktab.c,v $
+ * Revision 1.1 2001/04/29 17:49:54 mdw
+ * Added SAFER block cipher.
+ *
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <mLib/bits.h>
+
+/*----- Main code ---------------------------------------------------------*/
+
+int main(void)
+{
+ octet s[256], si[256];
+ unsigned x, i;
+
+ x = 1;
+ for (i = 0; i < 256; i++) {
+ if (x < 256) {
+ s[i] = x;
+ si[x] = i;
+ }
+ x = (x * 45)%257;
+ }
+ s[128] = 0;
+ si[0] = 128;
+
+ fputs("\
+/* -*-c-*-\n\
+ *\n\
+ * SAFER tables [generated]\n\
+ */\n\
+\n\
+#ifndef CATACOMB_SAFER_TAB_H\n\
+#define CATACOMB_SAFER_TAB_H\n\
+\n\
+", stdout);
+
+ fputs("\
+/* --- S-boxes --- */\n\
+\n\
+#define SAFER_S { \\\n\
+ ", stdout);
+ for (i = 0; i < 256; i++) {
+ printf("0x%02x", s[i]);
+ if (i == 255)
+ fputs(" \\\n}\n\n", stdout);
+ else if ((i + 1)%8 == 0)
+ fputs(", \\\n ", stdout);
+ else
+ fputs(", ", stdout);
+ }
+
+ fputs("\
+#define SAFER_SI { \\\n\
+ ", stdout);
+ for (i = 0; i < 256; i++) {
+ printf("0x%02x", si[i]);
+ if (i == 255)
+ fputs(" \\\n}\n\n", stdout);
+ else if ((i + 1)%8 == 0)
+ fputs(", \\\n ", stdout);
+ else
+ fputs(", ", stdout);
+ }
+
+ puts("#endif");
+
+ if (fclose(stdout)) {
+ fprintf(stderr, "error writing data\n");
+ exit(EXIT_FAILURE);
+ }
+
+ return (0);
+}
+
+/*----- That's all, folks -------------------------------------------------*/