X-Git-Url: https://git.distorted.org.uk/u/mdw/catacomb/blobdiff_plain/ba6e6b64033b1f9de49feccb5c9cd438354481f7..0f00dc4c8eb47e67bc0f148c2dd109f73a451e0a:/symm/tiger-mktab.c?ds=sidebyside

diff --git a/symm/tiger-mktab.c b/symm/tiger-mktab.c
new file mode 100644
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--- /dev/null
+++ b/symm/tiger-mktab.c
@@ -0,0 +1,151 @@
+/* -*-c-*-
+ *
+ * Generate S-boxes for the Tiger hash function
+ *
+ * (c) 2000 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.
+ */
+
+/*----- Header files ------------------------------------------------------*/
+
+#include <mLib/bits.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "tiger-base.h"
+
+/*----- Data structures ---------------------------------------------------*/
+
+/*----- Static variables --------------------------------------------------*/
+
+static kludge64 s[4][256];
+
+/*----- Main code ---------------------------------------------------------*/
+
+/* --- The basic Tiger compression function --- */
+
+static void tiger(kludge64 *x, kludge64 *ss)
+{
+  TIGER_CORE(ss[0], ss[1], ss[2], x);
+}
+
+/* --- The S-box generator --- */
+
+void gen(const char *buf, unsigned passes)
+{
+  kludge64 x[8], ss[3];
+  unsigned i, j, k, b;
+  unsigned q, n;
+  uint32 t;
+  const char *p;
+
+  for (i = 0; i < 256; i++) {
+    for (j = 0; j < 4; j++) {
+      uint32 z = 0x01010101 * i;
+      SET64(s[j][i], z, z);
+    }
+  }
+
+  SET64(ss[0], 0x01234567, 0x89abcdef);
+  SET64(ss[1], 0xfedcba98, 0x76543210);
+  SET64(ss[2], 0xf096a5b4, 0xc3b2e187);
+
+  q = 2;
+  for (i = 0; i < passes; i++) {
+    for (j = 0; j < 256; j++) {
+      for (k = 0; k < 4; k++) {
+	q++;
+	if (q == 3) {
+	  q = 0;
+	  for (p = buf, n = 0; n < 8; n++, p += 8)
+	    LOAD64_L_(x[n], p);
+	  tiger(x, ss);
+	}
+	for (b = 0; b < 32; b += 8) {
+	  n = U8(LO64(ss[q]) >> b);
+	  t = (LO64(s[k][j]) ^ LO64(s[k][n])) & (0xff << b);
+	  SET64(s[k][j], HI64(s[k][j]), LO64(s[k][j]) ^ t);
+	  SET64(s[k][n], HI64(s[k][n]), LO64(s[k][n]) ^ t);
+	}
+	for (b = 0; b < 32; b += 8) {
+	  n = U8(HI64(ss[q]) >> b);
+	  t = (HI64(s[k][j]) ^ HI64(s[k][n])) & (0xff << b);
+	  SET64(s[k][j], HI64(s[k][j]) ^ t, LO64(s[k][j]));
+	  SET64(s[k][n], HI64(s[k][n]) ^ t, LO64(s[k][n]));
+	}
+      }
+    }
+  }
+}
+
+int main(void)
+{
+  unsigned i, j;
+
+  gen("Tiger - A Fast New Hash Function, by Ross Anderson and Eli Biham", 5);
+
+  fputs("\
+/* -*-c-*-\n\
+ *\n\
+ * S-boxes for Tiger [generated]\n\
+ */\n\
+\n\
+#ifndef CATACOMB_TIGER_TAB_H\n\
+#define CATACOMB_TIGER_TAB_H\n\
+\n\
+#define TIGER_S {							\\\n\
+  { ", stdout);
+
+  for (i = 0; i < 4; i++) {
+    for (j = 0; j < 256; j++) {
+#ifdef HAVE_UINT64
+      printf("{ 0x%016llxull }", s[i][j].i);
+#else
+      printf("{ 0x%08lx, 0x%08lx }",
+	     (unsigned long)s[i][j].hi, (unsigned long)s[i][j].lo);
+#endif
+      if (j == 255) {
+	if (i == 3)
+	  fputs(" }		\\\n}\n", stdout);
+	else
+	  fputs(" },		\\\n\
+									\\\n\
+  { ", stdout);
+      } else if (j % 2 == 1)
+	fputs(",		\\\n	", stdout);
+      else
+	fputs(", ", stdout);
+    }
+  }
+
+  fputs("\n#endif\n", stdout);
+
+  if (fclose(stdout)) {
+    fprintf(stderr, "error writing data\n");
+    exit(EXIT_FAILURE);
+  }
+
+  return (0);
+}
+
+/*----- That's all, folks -------------------------------------------------*/