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des
|
From: |
Simon Josefsson |
|
Subject: |
des |
|
Date: |
Fri, 14 Oct 2005 13:23:25 +0200 |
|
User-agent: |
Gnus/5.110004 (No Gnus v0.4) Emacs/22.0.50 (gnu/linux) |
Ok to install?
Comments welcome, of course.
Index: modules/des
===================================================================
RCS file: modules/des
diff -N modules/des
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ modules/des 14 Oct 2005 11:23:02 -0000
@@ -0,0 +1,25 @@
+Description:
+DES block cipher.
+
+Files:
+lib/des.c
+lib/des.h
+m4/des.m4
+
+Depends-on:
+stdint
+stdbool
+
+configure.ac:
+gl_DES
+
+Makefile.am:
+
+Include:
+"des.h"
+
+License:
+LGPL
+
+Maintainer:
+Simon Josefsson
Index: modules/des-tests
===================================================================
RCS file: modules/des-tests
diff -N modules/des-tests
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ modules/des-tests 14 Oct 2005 11:23:02 -0000
@@ -0,0 +1,11 @@
+Files:
+tests/test-des.c
+
+Depends-on:
+
+configure.ac:
+
+Makefile.am:
+TESTS += test-des
+noinst_PROGRAMS += test-des
+test_des_SOURCES = test-des.c
Index: m4/des.m4
===================================================================
RCS file: m4/des.m4
diff -N m4/des.m4
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ m4/des.m4 14 Oct 2005 11:23:02 -0000
@@ -0,0 +1,11 @@
+# des.m4 serial 1
+dnl Copyright (C) 2005 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_DES],
+[
+ AC_LIBSOURCES([des.c, des.h])
+ AC_LIBOBJ([des])
+])
Index: lib/des.c
===================================================================
RCS file: lib/des.c
diff -N lib/des.c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ lib/des.c 14 Oct 2005 11:23:02 -0000
@@ -0,0 +1,683 @@
+/* des.c --- DES and Triple-DES encryption/decryption Algorithm
+ * Copyright (C) 1998, 1999, 2001, 2002, 2003, 2004, 2005
+ * Free Software Foundation, Inc.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * This file 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+/* Adapted for gnulib by Simon Josefsson, based on Libgcrypt. */
+
+/*
+ * For a description of triple encryption, see:
+ * Bruce Schneier: Applied Cryptography. Second Edition.
+ * John Wiley & Sons, 1996. ISBN 0-471-12845-7. Pages 358 ff.
+ * This implementation is according to the definition of DES in FIPS
+ * PUB 46-2 from December 1993.
+ *
+ * Written by Michael Roth <address@hidden>, September 1998
+ */
+
+/*
+ * U S A G E
+ * ===========
+ *
+ * For DES or Triple-DES encryption/decryption you must initialize a proper
+ * encryption context with a key.
+ *
+ * A DES key is 64bit wide but only 56bits of the key are used. The remaining
+ * bits are parity bits and they will _not_ checked in this implementation, but
+ * simply ignored.
+ *
+ * For Triple-DES you could use either two 64bit keys or three 64bit keys.
+ * The parity bits will _not_ checked, too.
+ *
+ * After initializing a context with a key you could use this context to
+ * encrypt or decrypt data in 64bit blocks in Electronic Codebook Mode.
+ *
+ * DES Example
+ * -----------
+ * unsigned char key[8];
+ * unsigned char plaintext[8];
+ * unsigned char ciphertext[8];
+ * unsigned char recoverd[8];
+ * des_ctx context;
+ *
+ * // Fill 'key' and 'plaintext' with some data
+ * ....
+ *
+ * // Set up the DES encryption context
+ * des_setkey(&context, key);
+ *
+ * // Encrypt the plaintext
+ * des_ecb_encrypt(&context, plaintext, ciphertext);
+ *
+ * // To recover the orginal plaintext from ciphertext use:
+ * des_ecb_decrypt(&context, ciphertext, recoverd);
+ *
+ *
+ * Triple-DES Example
+ * ------------------
+ * unsigned char key1[8];
+ * unsigned char key2[8];
+ * unsigned char key3[8];
+ * unsigned char plaintext[8];
+ * unsigned char ciphertext[8];
+ * unsigned char recoverd[8];
+ * tripledes_ctx context;
+ *
+ * // If you would like to use two 64bit keys, fill 'key1' and'key2'
+ * // then setup the encryption context:
+ * tripledes_set2keys(&context, key1, key2);
+ *
+ * // To use three 64bit keys with Triple-DES use:
+ * tripledes_set3keys(&context, key1, key2, key3);
+ *
+ * // Encrypting plaintext with Triple-DES
+ * tripledes_ecb_encrypt(&context, plaintext, ciphertext);
+ *
+ * // Decrypting ciphertext to recover the plaintext with Triple-DES
+ * tripledes_ecb_decrypt(&context, ciphertext, recoverd);
+ */
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "des.h"
+
+#include <stdio.h>
+#include <string.h> /* memcpy, memcmp */
+
+/*
+ * The s-box values are permuted according to the 'primitive function P'
+ * and are rotated one bit to the left.
+ */
+static const uint32_t sbox1[64] = {
+ 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404,
+ 0x00000004, 0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400,
+ 0x01000404, 0x01010004, 0x01000000, 0x00000004, 0x00000404, 0x01000400,
+ 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404,
+ 0x00010004, 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404,
+ 0x00010404, 0x01000000, 0x00010000, 0x01010404, 0x00000004, 0x01010000,
+ 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000,
+ 0x00010400, 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404,
+ 0x01010404, 0x00010004, 0x01010000, 0x01000404, 0x01000004, 0x00000404,
+ 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000,
+ 0x00010004, 0x00010400, 0x00000000, 0x01010004
+};
+
+static const uint32_t sbox2[64] = {
+ 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020,
+ 0x80100020, 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000,
+ 0x80008000, 0x00100000, 0x00000020, 0x80100020, 0x00108000, 0x00100020,
+ 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000,
+ 0x00100020, 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000,
+ 0x80100000, 0x00008020, 0x00000000, 0x00108020, 0x80100020, 0x00100000,
+ 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000,
+ 0x00000020, 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000,
+ 0x00008020, 0x80108000, 0x00100000, 0x80000020, 0x00100020, 0x80008020,
+ 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020,
+ 0x80000000, 0x80100020, 0x80108020, 0x00108000
+};
+
+static const uint32_t sbox3[64] = {
+ 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000,
+ 0x00020208, 0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000,
+ 0x08020208, 0x00020008, 0x08020000, 0x00000208, 0x08000000, 0x00000008,
+ 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208,
+ 0x08000208, 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208,
+ 0x00000200, 0x08000000, 0x08020200, 0x08000000, 0x00020008, 0x00000208,
+ 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008,
+ 0x08020208, 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008,
+ 0x08000208, 0x00020000, 0x08000000, 0x08020208, 0x00000008, 0x00020208,
+ 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000,
+ 0x00020208, 0x00000008, 0x08020008, 0x00020200
+};
+
+static const uint32_t sbox4[64] = {
+ 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081,
+ 0x00800001, 0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081,
+ 0x00000081, 0x00000000, 0x00800080, 0x00800001, 0x00000001, 0x00002000,
+ 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080,
+ 0x00800081, 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080,
+ 0x00802081, 0x00000081, 0x00800080, 0x00800001, 0x00802000, 0x00802081,
+ 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080,
+ 0x00800081, 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080,
+ 0x00802081, 0x00000081, 0x00000001, 0x00002000, 0x00800001, 0x00002001,
+ 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001,
+ 0x00000080, 0x00800000, 0x00002000, 0x00802080
+};
+
+static const uint32_t sbox5[64] = {
+ 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100,
+ 0x40000000, 0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100,
+ 0x42000100, 0x42080000, 0x00080100, 0x40000000, 0x02000000, 0x40080000,
+ 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100,
+ 0x42080000, 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000,
+ 0x42000000, 0x00080100, 0x00080000, 0x42000100, 0x00000100, 0x02000000,
+ 0x40000000, 0x02080000, 0x42000100, 0x40080100, 0x02000100, 0x40000000,
+ 0x42080000, 0x02080100, 0x40080100, 0x00000100, 0x02000000, 0x42080000,
+ 0x42080100, 0x00080100, 0x42000000, 0x42080100, 0x02080000, 0x00000000,
+ 0x40080000, 0x42000000, 0x00080100, 0x02000100, 0x40000100, 0x00080000,
+ 0x00000000, 0x40080000, 0x02080100, 0x40000100
+};
+
+static const uint32_t sbox6[64] = {
+ 0x20000010, 0x20400000, 0x00004000, 0x20404010, 0x20400000, 0x00000010,
+ 0x20404010, 0x00400000, 0x20004000, 0x00404010, 0x00400000, 0x20000010,
+ 0x00400010, 0x20004000, 0x20000000, 0x00004010, 0x00000000, 0x00400010,
+ 0x20004010, 0x00004000, 0x00404000, 0x20004010, 0x00000010, 0x20400010,
+ 0x20400010, 0x00000000, 0x00404010, 0x20404000, 0x00004010, 0x00404000,
+ 0x20404000, 0x20000000, 0x20004000, 0x00000010, 0x20400010, 0x00404000,
+ 0x20404010, 0x00400000, 0x00004010, 0x20000010, 0x00400000, 0x20004000,
+ 0x20000000, 0x00004010, 0x20000010, 0x20404010, 0x00404000, 0x20400000,
+ 0x00404010, 0x20404000, 0x00000000, 0x20400010, 0x00000010, 0x00004000,
+ 0x20400000, 0x00404010, 0x00004000, 0x00400010, 0x20004010, 0x00000000,
+ 0x20404000, 0x20000000, 0x00400010, 0x20004010
+};
+
+static const uint32_t sbox7[64] = {
+ 0x00200000, 0x04200002, 0x04000802, 0x00000000, 0x00000800, 0x04000802,
+ 0x00200802, 0x04200800, 0x04200802, 0x00200000, 0x00000000, 0x04000002,
+ 0x00000002, 0x04000000, 0x04200002, 0x00000802, 0x04000800, 0x00200802,
+ 0x00200002, 0x04000800, 0x04000002, 0x04200000, 0x04200800, 0x00200002,
+ 0x04200000, 0x00000800, 0x00000802, 0x04200802, 0x00200800, 0x00000002,
+ 0x04000000, 0x00200800, 0x04000000, 0x00200800, 0x00200000, 0x04000802,
+ 0x04000802, 0x04200002, 0x04200002, 0x00000002, 0x00200002, 0x04000000,
+ 0x04000800, 0x00200000, 0x04200800, 0x00000802, 0x00200802, 0x04200800,
+ 0x00000802, 0x04000002, 0x04200802, 0x04200000, 0x00200800, 0x00000000,
+ 0x00000002, 0x04200802, 0x00000000, 0x00200802, 0x04200000, 0x00000800,
+ 0x04000002, 0x04000800, 0x00000800, 0x00200002
+};
+
+static const uint32_t sbox8[64] = {
+ 0x10001040, 0x00001000, 0x00040000, 0x10041040, 0x10000000, 0x10001040,
+ 0x00000040, 0x10000000, 0x00040040, 0x10040000, 0x10041040, 0x00041000,
+ 0x10041000, 0x00041040, 0x00001000, 0x00000040, 0x10040000, 0x10000040,
+ 0x10001000, 0x00001040, 0x00041000, 0x00040040, 0x10040040, 0x10041000,
+ 0x00001040, 0x00000000, 0x00000000, 0x10040040, 0x10000040, 0x10001000,
+ 0x00041040, 0x00040000, 0x00041040, 0x00040000, 0x10041000, 0x00001000,
+ 0x00000040, 0x10040040, 0x00001000, 0x00041040, 0x10001000, 0x00000040,
+ 0x10000040, 0x10040000, 0x10040040, 0x10000000, 0x00040000, 0x10001040,
+ 0x00000000, 0x10041040, 0x00040040, 0x10000040, 0x10040000, 0x10001000,
+ 0x10001040, 0x00000000, 0x10041040, 0x00041000, 0x00041000, 0x00001040,
+ 0x00001040, 0x00040040, 0x10000000, 0x10041000
+};
+
+/*
+ * These two tables are part of the 'permuted choice 1' function.
+ * In this implementation several speed improvements are done.
+ */
+static const uint32_t leftkey_swap[16] = {
+ 0x00000000, 0x00000001, 0x00000100, 0x00000101,
+ 0x00010000, 0x00010001, 0x00010100, 0x00010101,
+ 0x01000000, 0x01000001, 0x01000100, 0x01000101,
+ 0x01010000, 0x01010001, 0x01010100, 0x01010101
+};
+
+static const uint32_t rightkey_swap[16] = {
+ 0x00000000, 0x01000000, 0x00010000, 0x01010000,
+ 0x00000100, 0x01000100, 0x00010100, 0x01010100,
+ 0x00000001, 0x01000001, 0x00010001, 0x01010001,
+ 0x00000101, 0x01000101, 0x00010101, 0x01010101,
+};
+
+/*
+ * Numbers of left shifts per round for encryption subkeys.
+ * To calculate the decryption subkeys we just reverse the
+ * ordering of the calculated encryption subkeys. So their
+ * is no need for a decryption rotate tab.
+ */
+static const unsigned char encrypt_rotate_tab[16] = {
+ 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1
+};
+
+/*
+ * Table with weak DES keys sorted in ascending order.
+ * In DES their are 64 known keys wich are weak. They are weak
+ * because they produce only one, two or four different
+ * subkeys in the subkey scheduling process.
+ * The keys in this table have all their parity bits cleared.
+ */
+static const unsigned char weak_keys[64][8] = {
+ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, /*w */
+ {0x00, 0x00, 0x1e, 0x1e, 0x00, 0x00, 0x0e, 0x0e},
+ {0x00, 0x00, 0xe0, 0xe0, 0x00, 0x00, 0xf0, 0xf0},
+ {0x00, 0x00, 0xfe, 0xfe, 0x00, 0x00, 0xfe, 0xfe},
+ {0x00, 0x1e, 0x00, 0x1e, 0x00, 0x0e, 0x00, 0x0e}, /*sw */
+ {0x00, 0x1e, 0x1e, 0x00, 0x00, 0x0e, 0x0e, 0x00},
+ {0x00, 0x1e, 0xe0, 0xfe, 0x00, 0x0e, 0xf0, 0xfe},
+ {0x00, 0x1e, 0xfe, 0xe0, 0x00, 0x0e, 0xfe, 0xf0},
+ {0x00, 0xe0, 0x00, 0xe0, 0x00, 0xf0, 0x00, 0xf0}, /*sw */
+ {0x00, 0xe0, 0x1e, 0xfe, 0x00, 0xf0, 0x0e, 0xfe},
+ {0x00, 0xe0, 0xe0, 0x00, 0x00, 0xf0, 0xf0, 0x00},
+ {0x00, 0xe0, 0xfe, 0x1e, 0x00, 0xf0, 0xfe, 0x0e},
+ {0x00, 0xfe, 0x00, 0xfe, 0x00, 0xfe, 0x00, 0xfe}, /*sw */
+ {0x00, 0xfe, 0x1e, 0xe0, 0x00, 0xfe, 0x0e, 0xf0},
+ {0x00, 0xfe, 0xe0, 0x1e, 0x00, 0xfe, 0xf0, 0x0e},
+ {0x00, 0xfe, 0xfe, 0x00, 0x00, 0xfe, 0xfe, 0x00},
+ {0x1e, 0x00, 0x00, 0x1e, 0x0e, 0x00, 0x00, 0x0e},
+ {0x1e, 0x00, 0x1e, 0x00, 0x0e, 0x00, 0x0e, 0x00}, /*sw */
+ {0x1e, 0x00, 0xe0, 0xfe, 0x0e, 0x00, 0xf0, 0xfe},
+ {0x1e, 0x00, 0xfe, 0xe0, 0x0e, 0x00, 0xfe, 0xf0},
+ {0x1e, 0x1e, 0x00, 0x00, 0x0e, 0x0e, 0x00, 0x00},
+ {0x1e, 0x1e, 0x1e, 0x1e, 0x0e, 0x0e, 0x0e, 0x0e}, /*w */
+ {0x1e, 0x1e, 0xe0, 0xe0, 0x0e, 0x0e, 0xf0, 0xf0},
+ {0x1e, 0x1e, 0xfe, 0xfe, 0x0e, 0x0e, 0xfe, 0xfe},
+ {0x1e, 0xe0, 0x00, 0xfe, 0x0e, 0xf0, 0x00, 0xfe},
+ {0x1e, 0xe0, 0x1e, 0xe0, 0x0e, 0xf0, 0x0e, 0xf0}, /*sw */
+ {0x1e, 0xe0, 0xe0, 0x1e, 0x0e, 0xf0, 0xf0, 0x0e},
+ {0x1e, 0xe0, 0xfe, 0x00, 0x0e, 0xf0, 0xfe, 0x00},
+ {0x1e, 0xfe, 0x00, 0xe0, 0x0e, 0xfe, 0x00, 0xf0},
+ {0x1e, 0xfe, 0x1e, 0xfe, 0x0e, 0xfe, 0x0e, 0xfe}, /*sw */
+ {0x1e, 0xfe, 0xe0, 0x00, 0x0e, 0xfe, 0xf0, 0x00},
+ {0x1e, 0xfe, 0xfe, 0x1e, 0x0e, 0xfe, 0xfe, 0x0e},
+ {0xe0, 0x00, 0x00, 0xe0, 0xf0, 0x00, 0x00, 0xf0},
+ {0xe0, 0x00, 0x1e, 0xfe, 0xf0, 0x00, 0x0e, 0xfe},
+ {0xe0, 0x00, 0xe0, 0x00, 0xf0, 0x00, 0xf0, 0x00}, /*sw */
+ {0xe0, 0x00, 0xfe, 0x1e, 0xf0, 0x00, 0xfe, 0x0e},
+ {0xe0, 0x1e, 0x00, 0xfe, 0xf0, 0x0e, 0x00, 0xfe},
+ {0xe0, 0x1e, 0x1e, 0xe0, 0xf0, 0x0e, 0x0e, 0xf0},
+ {0xe0, 0x1e, 0xe0, 0x1e, 0xf0, 0x0e, 0xf0, 0x0e}, /*sw */
+ {0xe0, 0x1e, 0xfe, 0x00, 0xf0, 0x0e, 0xfe, 0x00},
+ {0xe0, 0xe0, 0x00, 0x00, 0xf0, 0xf0, 0x00, 0x00},
+ {0xe0, 0xe0, 0x1e, 0x1e, 0xf0, 0xf0, 0x0e, 0x0e},
+ {0xe0, 0xe0, 0xe0, 0xe0, 0xf0, 0xf0, 0xf0, 0xf0}, /*w */
+ {0xe0, 0xe0, 0xfe, 0xfe, 0xf0, 0xf0, 0xfe, 0xfe},
+ {0xe0, 0xfe, 0x00, 0x1e, 0xf0, 0xfe, 0x00, 0x0e},
+ {0xe0, 0xfe, 0x1e, 0x00, 0xf0, 0xfe, 0x0e, 0x00},
+ {0xe0, 0xfe, 0xe0, 0xfe, 0xf0, 0xfe, 0xf0, 0xfe}, /*sw */
+ {0xe0, 0xfe, 0xfe, 0xe0, 0xf0, 0xfe, 0xfe, 0xf0},
+ {0xfe, 0x00, 0x00, 0xfe, 0xfe, 0x00, 0x00, 0xfe},
+ {0xfe, 0x00, 0x1e, 0xe0, 0xfe, 0x00, 0x0e, 0xf0},
+ {0xfe, 0x00, 0xe0, 0x1e, 0xfe, 0x00, 0xf0, 0x0e},
+ {0xfe, 0x00, 0xfe, 0x00, 0xfe, 0x00, 0xfe, 0x00}, /*sw */
+ {0xfe, 0x1e, 0x00, 0xe0, 0xfe, 0x0e, 0x00, 0xf0},
+ {0xfe, 0x1e, 0x1e, 0xfe, 0xfe, 0x0e, 0x0e, 0xfe},
+ {0xfe, 0x1e, 0xe0, 0x00, 0xfe, 0x0e, 0xf0, 0x00},
+ {0xfe, 0x1e, 0xfe, 0x1e, 0xfe, 0x0e, 0xfe, 0x0e}, /*sw */
+ {0xfe, 0xe0, 0x00, 0x1e, 0xfe, 0xf0, 0x00, 0x0e},
+ {0xfe, 0xe0, 0x1e, 0x00, 0xfe, 0xf0, 0x0e, 0x00},
+ {0xfe, 0xe0, 0xe0, 0xfe, 0xfe, 0xf0, 0xf0, 0xfe},
+ {0xfe, 0xe0, 0xfe, 0xe0, 0xfe, 0xf0, 0xfe, 0xf0}, /*sw */
+ {0xfe, 0xfe, 0x00, 0x00, 0xfe, 0xfe, 0x00, 0x00},
+ {0xfe, 0xfe, 0x1e, 0x1e, 0xfe, 0xfe, 0x0e, 0x0e},
+ {0xfe, 0xfe, 0xe0, 0xe0, 0xfe, 0xfe, 0xf0, 0xf0},
+ {0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe} /*w */
+};
+static const unsigned char weak_keys_chksum[20] = {
+ 0xD0, 0xCF, 0x07, 0x38, 0x93, 0x70, 0x8A, 0x83, 0x7D, 0xD7,
+ 0x8A, 0x36, 0x65, 0x29, 0x6C, 0x1F, 0x7C, 0x3F, 0xD3, 0x41
+};
+
+bool
+des_is_weak_key (const char * key)
+{
+ char work[8];
+ int i, left, right, middle, cmp_result;
+
+ /* clear parity bits */
+ for (i = 0; i < 8; ++i)
+ work[i] = ((unsigned char)key[i]) & 0xfe;
+
+ /* binary search in the weak key table */
+ left = 0;
+ right = 63;
+ while (left <= right)
+ {
+ middle = (left + right) / 2;
+
+ if (!(cmp_result = memcmp (work, weak_keys[middle], 8)))
+ return -1;
+
+ if (cmp_result > 0)
+ left = middle + 1;
+ else
+ right = middle - 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Macro to swap bits across two words.
+ */
+#define DO_PERMUTATION(a, temp, b, offset, mask) \
+ temp = ((a>>offset) ^ b) & mask; \
+ b ^= temp; \
+ a ^= temp<<offset;
+
+
+/*
+ * This performs the 'initial permutation' of the data to be encrypted
+ * or decrypted. Additionally the resulting two words are rotated one bit
+ * to the left.
+ */
+#define INITIAL_PERMUTATION(left, temp, right) \
+ DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f) \
+ DO_PERMUTATION(left, temp, right, 16, 0x0000ffff) \
+ DO_PERMUTATION(right, temp, left, 2, 0x33333333) \
+ DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff) \
+ right = (right << 1) | (right >> 31); \
+ temp = (left ^ right) & 0xaaaaaaaa; \
+ right ^= temp; \
+ left ^= temp; \
+ left = (left << 1) | (left >> 31);
+
+/*
+ * The 'inverse initial permutation'.
+ */
+#define FINAL_PERMUTATION(left, temp, right) \
+ left = (left << 31) | (left >> 1); \
+ temp = (left ^ right) & 0xaaaaaaaa; \
+ left ^= temp; \
+ right ^= temp; \
+ right = (right << 31) | (right >> 1); \
+ DO_PERMUTATION(right, temp, left, 8, 0x00ff00ff) \
+ DO_PERMUTATION(right, temp, left, 2, 0x33333333) \
+ DO_PERMUTATION(left, temp, right, 16, 0x0000ffff) \
+ DO_PERMUTATION(left, temp, right, 4, 0x0f0f0f0f)
+
+
+/*
+ * A full DES round including 'expansion function', 'sbox substitution'
+ * and 'primitive function P' but without swapping the left and right word.
+ * Please note: The data in 'from' and 'to' is already rotated one bit to
+ * the left, done in the initial permutation.
+ */
+#define DES_ROUND(from, to, work, subkey) \
+ work = from ^ *subkey++; \
+ to ^= sbox8[ work & 0x3f ]; \
+ to ^= sbox6[ (work>>8) & 0x3f ]; \
+ to ^= sbox4[ (work>>16) & 0x3f ]; \
+ to ^= sbox2[ (work>>24) & 0x3f ]; \
+ work = ((from << 28) | (from >> 4)) ^ *subkey++; \
+ to ^= sbox7[ work & 0x3f ]; \
+ to ^= sbox5[ (work>>8) & 0x3f ]; \
+ to ^= sbox3[ (work>>16) & 0x3f ]; \
+ to ^= sbox1[ (work>>24) & 0x3f ];
+
+/*
+ * Macros to convert 8 bytes from/to 32bit words.
+ */
+#define READ_64BIT_DATA(data, left, right) \
+ left = (data[0] << 24) | (data[1] << 16) | (data[2] << 8) | data[3]; \
+ right = (data[4] << 24) | (data[5] << 16) | (data[6] << 8) | data[7];
+
+#define WRITE_64BIT_DATA(data, left, right) \
+ data[0] = (left >> 24) &0xff; data[1] = (left >> 16) &0xff; \
+ data[2] = (left >> 8) &0xff; data[3] = left &0xff; \
+ data[4] = (right >> 24) &0xff; data[5] = (right >> 16) &0xff; \
+ data[6] = (right >> 8) &0xff; data[7] = right &0xff;
+
+/*
+ * Handy macros for encryption and decryption of data
+ */
+#define des_ecb_encrypt(ctx, from, to) des_ecb_crypt(ctx, from, to, 0)
+#define des_ecb_decrypt(ctx, from, to) des_ecb_crypt(ctx, from, to, 1)
+#define tripledes_ecb_encrypt(ctx, from, to) tripledes_ecb_crypt(ctx,from,to,0)
+#define tripledes_ecb_decrypt(ctx, from, to) tripledes_ecb_crypt(ctx,from,to,1)
+
+/*
+ * des_key_schedule(): Calculate 16 subkeys pairs (even/odd) for
+ * 16 encryption rounds.
+ * To calculate subkeys for decryption the caller
+ * have to reorder the generated subkeys.
+ *
+ * rawkey: 8 Bytes of key data
+ * subkey: Array of at least 32 uint32_ts. Will be filled
+ * with calculated subkeys.
+ *
+ */
+static void
+des_key_schedule (const char * _rawkey, uint32_t * subkey)
+{
+ const unsigned char *rawkey = _rawkey;
+ uint32_t left, right, work;
+ int round;
+
+ READ_64BIT_DATA (rawkey, left, right)
+ DO_PERMUTATION (right, work, left, 4, 0x0f0f0f0f)
+ DO_PERMUTATION (right, work, left, 0, 0x10101010)
+ left = ((leftkey_swap[(left >> 0) & 0xf] << 3)
+ | (leftkey_swap[(left >> 8) & 0xf] << 2)
+ | (leftkey_swap[(left >> 16) & 0xf] << 1)
+ | (leftkey_swap[(left >> 24) & 0xf])
+ | (leftkey_swap[(left >> 5) & 0xf] << 7)
+ | (leftkey_swap[(left >> 13) & 0xf] << 6)
+ | (leftkey_swap[(left >> 21) & 0xf] << 5)
+ | (leftkey_swap[(left >> 29) & 0xf] << 4));
+
+ left &= 0x0fffffff;
+
+ right = ((rightkey_swap[(right >> 1) & 0xf] << 3)
+ | (rightkey_swap[(right >> 9) & 0xf] << 2)
+ | (rightkey_swap[(right >> 17) & 0xf] << 1)
+ | (rightkey_swap[(right >> 25) & 0xf])
+ | (rightkey_swap[(right >> 4) & 0xf] << 7)
+ | (rightkey_swap[(right >> 12) & 0xf] << 6)
+ | (rightkey_swap[(right >> 20) & 0xf] << 5)
+ | (rightkey_swap[(right >> 28) & 0xf] << 4));
+
+ right &= 0x0fffffff;
+
+ for (round = 0; round < 16; ++round)
+ {
+ left = ((left << encrypt_rotate_tab[round])
+ | (left >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff;
+ right = ((right << encrypt_rotate_tab[round])
+ | (right >> (28 - encrypt_rotate_tab[round]))) & 0x0fffffff;
+
+ *subkey++ = (((left << 4) & 0x24000000)
+ | ((left << 28) & 0x10000000)
+ | ((left << 14) & 0x08000000)
+ | ((left << 18) & 0x02080000)
+ | ((left << 6) & 0x01000000)
+ | ((left << 9) & 0x00200000)
+ | ((left >> 1) & 0x00100000)
+ | ((left << 10) & 0x00040000)
+ | ((left << 2) & 0x00020000)
+ | ((left >> 10) & 0x00010000)
+ | ((right >> 13) & 0x00002000)
+ | ((right >> 4) & 0x00001000)
+ | ((right << 6) & 0x00000800)
+ | ((right >> 1) & 0x00000400)
+ | ((right >> 14) & 0x00000200)
+ | (right & 0x00000100)
+ | ((right >> 5) & 0x00000020)
+ | ((right >> 10) & 0x00000010)
+ | ((right >> 3) & 0x00000008)
+ | ((right >> 18) & 0x00000004)
+ | ((right >> 26) & 0x00000002)
+ | ((right >> 24) & 0x00000001));
+
+ *subkey++ = (((left << 15) & 0x20000000)
+ | ((left << 17) & 0x10000000)
+ | ((left << 10) & 0x08000000)
+ | ((left << 22) & 0x04000000)
+ | ((left >> 2) & 0x02000000)
+ | ((left << 1) & 0x01000000)
+ | ((left << 16) & 0x00200000)
+ | ((left << 11) & 0x00100000)
+ | ((left << 3) & 0x00080000)
+ | ((left >> 6) & 0x00040000)
+ | ((left << 15) & 0x00020000)
+ | ((left >> 4) & 0x00010000)
+ | ((right >> 2) & 0x00002000)
+ | ((right << 8) & 0x00001000)
+ | ((right >> 14) & 0x00000808)
+ | ((right >> 9) & 0x00000400)
+ | ((right) & 0x00000200)
+ | ((right << 7) & 0x00000100)
+ | ((right >> 7) & 0x00000020)
+ | ((right >> 3) & 0x00000011)
+ | ((right << 2) & 0x00000004)
+ | ((right >> 21) & 0x00000002));
+ }
+}
+
+void
+des_setkey (des_ctx *ctx, const char * key)
+{
+ int i;
+
+ des_key_schedule (key, ctx->encrypt_subkeys);
+
+ for (i = 0; i < 32; i += 2)
+ {
+ ctx->decrypt_subkeys[i] = ctx->encrypt_subkeys[30 - i];
+ ctx->decrypt_subkeys[i + 1] = ctx->encrypt_subkeys[31 - i];
+ }
+}
+
+bool
+des_makekey (des_ctx *ctx, const char * key, size_t keylen)
+{
+ if (keylen != 8)
+ return false;
+
+ des_setkey (ctx, key);
+
+ return !des_is_weak_key (key);
+}
+
+void
+des_ecb_crypt (des_ctx *ctx, const char * _from, char * _to, int mode)
+{
+ const unsigned char *from = _from;
+ unsigned char *to = _to;
+ uint32_t left, right, work;
+ uint32_t *keys;
+
+ keys = mode ? ctx->decrypt_subkeys : ctx->encrypt_subkeys;
+
+ READ_64BIT_DATA (from, left, right)
+ INITIAL_PERMUTATION (left, work, right)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ FINAL_PERMUTATION (right, work, left)
+ WRITE_64BIT_DATA (to, right, left)
+}
+
+void
+tripledes_set2keys (tripledes_ctx *ctx, const char * key1, const char * key2)
+{
+ int i;
+
+ des_key_schedule (key1, ctx->encrypt_subkeys);
+ des_key_schedule (key2, &(ctx->decrypt_subkeys[32]));
+
+ for (i = 0; i < 32; i += 2)
+ {
+ ctx->decrypt_subkeys[i] = ctx->encrypt_subkeys[30 - i];
+ ctx->decrypt_subkeys[i + 1] = ctx->encrypt_subkeys[31 - i];
+
+ ctx->encrypt_subkeys[i + 32] = ctx->decrypt_subkeys[62 - i];
+ ctx->encrypt_subkeys[i + 33] = ctx->decrypt_subkeys[63 - i];
+
+ ctx->encrypt_subkeys[i + 64] = ctx->encrypt_subkeys[i];
+ ctx->encrypt_subkeys[i + 65] = ctx->encrypt_subkeys[i + 1];
+
+ ctx->decrypt_subkeys[i + 64] = ctx->decrypt_subkeys[i];
+ ctx->decrypt_subkeys[i + 65] = ctx->decrypt_subkeys[i + 1];
+ }
+}
+
+void
+tripledes_set3keys (tripledes_ctx *ctx, const char * key1,
+ const char * key2, const char * key3)
+{
+ int i;
+
+ des_key_schedule (key1, ctx->encrypt_subkeys);
+ des_key_schedule (key2, &(ctx->decrypt_subkeys[32]));
+ des_key_schedule (key3, &(ctx->encrypt_subkeys[64]));
+
+ for (i = 0; i < 32; i += 2)
+ {
+ ctx->decrypt_subkeys[i] = ctx->encrypt_subkeys[94 - i];
+ ctx->decrypt_subkeys[i + 1] = ctx->encrypt_subkeys[95 - i];
+
+ ctx->encrypt_subkeys[i + 32] = ctx->decrypt_subkeys[62 - i];
+ ctx->encrypt_subkeys[i + 33] = ctx->decrypt_subkeys[63 - i];
+
+ ctx->decrypt_subkeys[i + 64] = ctx->encrypt_subkeys[30 - i];
+ ctx->decrypt_subkeys[i + 65] = ctx->encrypt_subkeys[31 - i];
+ }
+}
+
+void
+tripledes_ecb_crypt (tripledes_ctx *ctx,
+ const char * _from,
+ char * _to, int mode)
+{
+ const unsigned char *from = _from;
+ unsigned char *to = _to;
+ uint32_t left, right, work;
+ uint32_t *keys;
+
+ keys = mode ? ctx->decrypt_subkeys : ctx->encrypt_subkeys;
+
+ READ_64BIT_DATA (from, left, right)
+ INITIAL_PERMUTATION (left, work, right)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (left, right, work, keys) DES_ROUND (right, left, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ DES_ROUND (right, left, work, keys) DES_ROUND (left, right, work, keys)
+ FINAL_PERMUTATION (right, work, left)
+ WRITE_64BIT_DATA (to, right, left)
+}
+
+bool
+tripledes_makekey (tripledes_ctx *ctx, const char * key, size_t keylen)
+{
+ if (keylen != 24)
+ return false;
+
+ tripledes_set3keys (ctx, key, key + 8, key + 16);
+
+ return !(des_is_weak_key (key)
+ || des_is_weak_key (key + 8)
+ || des_is_weak_key (key + 16));
+}
Index: lib/des.h
===================================================================
RCS file: lib/des.h
diff -N lib/des.h
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ lib/des.h 14 Oct 2005 11:23:02 -0000
@@ -0,0 +1,114 @@
+/* des.h --- DES cipher implementation.
+ * Copyright (C) 2005 Free Software Foundation, Inc.
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published
+ * by the Free Software Foundation; either version 2, or (at your
+ * option) any later version.
+ *
+ * This file 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+/* Adapted for gnulib by Simon Josefsson, based on Libgcrypt. */
+
+#ifndef DES_H
+# define DES_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+/*
+ * Encryption/Decryption context of DES
+ */
+typedef struct
+{
+ uint32_t encrypt_subkeys[32];
+ uint32_t decrypt_subkeys[32];
+} des_ctx;
+
+/*
+ * Encryption/Decryption context of Triple-DES
+ */
+typedef struct
+{
+ uint32_t encrypt_subkeys[96];
+ uint32_t decrypt_subkeys[96];
+} tripledes_ctx;
+
+/* Check whether the 8 byte key is weak. Does not check the parity
+ * bits of the key but simple ignore them. */
+extern bool
+des_is_weak_key (const char * key);
+
+/*
+ * DES
+ * ---
+ */
+
+/* Fill a DES context CTX with subkeys calculated from 64bit KEY.
+ * Does not check parity bits, but simply ignore them. Does not check
+ * for weak keys. */
+extern void
+des_setkey (des_ctx *ctx, const char * key);
+
+/* Fill a DES context CTX with subkeys calculated from 64bit KEY, with
+ * weak key checking. Does not check parity bits, but simply ignore
+ * them. */
+extern bool
+des_makekey (des_ctx *ctx, const char * key, size_t keylen);
+
+/* Electronic Codebook Mode DES encryption/decryption of data
+ * according to 'mode'. */
+extern void
+des_ecb_crypt (des_ctx *ctx, const char * from, char * to, int mode);
+
+#define des_ecb_encrypt(ctx, from, to) des_ecb_crypt(ctx, from, to, 0)
+#define des_ecb_decrypt(ctx, from, to) des_ecb_crypt(ctx, from, to, 1)
+
+/* Triple-DES
+ * ----------
+ */
+
+/* Fill a Triple-DES context CTX with subkeys calculated from two
+ * 64bit keys in KEY1 and KEY2. Does not check the parity bits of the
+ * keys, but simply ignore them. Does not check for weak keys. */
+extern void
+tripledes_set2keys (tripledes_ctx *ctx, const char * key1, const char * key2);
+
+/*
+ * Fill a Triple-DES context CTX with subkeys calculated from three
+ * 64bit keys in KEY1, KEY2 and KEY3. Does not check the parity bits
+ * of the keys, but simply ignore them. Does not check for weak
+ * keys. */
+extern void
+tripledes_set3keys (tripledes_ctx *ctx, const char * key1,
+ const char * key2, const char * key3);
+
+/* Fill a Triple-DES context CTX with subkeys calculated from three
+ * concatenated 64bit keys in KEY, with weak key checking. Does not
+ * check the parity bits of the keys, but simply ignore them. */
+extern bool
+tripledes_makekey (tripledes_ctx *ctx, const char * key, size_t keylen);
+
+/* Electronic Codebook Mode Triple-DES encryption/decryption of data
+ * according to 'mode'. Sometimes this mode is named 'EDE' mode
+ * (Encryption-Decryption-Encryption). */
+extern void
+tripledes_ecb_crypt (tripledes_ctx *ctx,
+ const char * from,
+ char * to, int mode);
+
+#define tripledes_ecb_encrypt(ctx, from, to) tripledes_ecb_crypt(ctx,from,to,0)
+#define tripledes_ecb_decrypt(ctx, from, to) tripledes_ecb_crypt(ctx,from,to,1)
+
+#endif /* DES_H */
Index: tests/test-des.c
===================================================================
RCS file: tests/test-des.c
diff -N tests/test-des.c
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ tests/test-des.c 14 Oct 2005 11:23:02 -0000
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2005 Free Software Foundation
+ * Written by Simon Josefsson
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA. */
+
+/* Adapted for gnulib by Simon Josefsson, based on Libgcrypt. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <string.h>
+
+#include "des.h"
+
+int
+main (int argc, char *argv[])
+{
+ /*
+ * DES Maintenance Test
+ */
+ {
+ int i;
+ char key[8] = { 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55 };
+ char input[8] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+ char result[8] = { 0x24, 0x6e, 0x9d, 0xb9, 0xc5, 0x50, 0x38, 0x1a };
+ char temp1[8], temp2[8], temp3[8];
+ des_ctx des;
+
+ for (i = 0; i < 64; ++i)
+ {
+ des_setkey (&des, key);
+ des_ecb_encrypt (&des, input, temp1);
+ des_ecb_encrypt (&des, temp1, temp2);
+ des_setkey (&des, temp2);
+ des_ecb_decrypt (&des, temp1, temp3);
+ memcpy (key, temp3, 8);
+ memcpy (input, temp1, 8);
+ }
+ if (memcmp (temp3, result, 8))
+ return 1;
+ }
+
+
+ /*
+ * Self made Triple-DES test (Does somebody know an official test?)
+ */
+ {
+ int i;
+ char input[8] = { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 };
+ char key1[8] = { 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0 };
+ char key2[8] = { 0x11, 0x22, 0x33, 0x44, 0xff, 0xaa, 0xcc, 0xdd };
+ char result[8] = { 0x7b, 0x38, 0x3b, 0x23, 0xa2, 0x7d, 0x26, 0xd3 };
+
+ tripledes_ctx des3;
+
+ for (i = 0; i < 16; ++i)
+ {
+ tripledes_set2keys (&des3, key1, key2);
+ tripledes_ecb_encrypt (&des3, input, key1);
+ tripledes_ecb_decrypt (&des3, input, key2);
+ tripledes_set3keys (&des3, key1, input, key2);
+ tripledes_ecb_encrypt (&des3, input, input);
+ }
+ if (memcmp (input, result, 8))
+ return 1;
+ }
+
+ /*
+ * More Triple-DES test. These are testvectors as used by SSLeay,
+ * thanks to Jeroen C. van Gelderen.
+ */
+ {
+ struct
+ {
+ char key[24];
+ char plain[8];
+ char cipher[8];
+ } testdata[] =
+ {
+ {
+ {
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+ {
+ 0x95, 0xF8, 0xA5, 0xE5, 0xDD, 0x31, 0xD9, 0x00},
+ {
+ 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}},
+ {
+ {
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01},
+ {
+ 0x9D, 0x64, 0x55, 0x5A, 0x9A, 0x10, 0xB8, 0x52,},
+ {
+ 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00}
+ },
+ {
+ {
+ 0x38, 0x49, 0x67, 0x4C, 0x26, 0x02, 0x31, 0x9E,
+ 0x38, 0x49, 0x67, 0x4C, 0x26, 0x02, 0x31, 0x9E,
+ 0x38, 0x49, 0x67, 0x4C, 0x26, 0x02, 0x31, 0x9E},
+ {
+ 0x51, 0x45, 0x4B, 0x58, 0x2D, 0xDF, 0x44, 0x0A},
+ {
+ 0x71, 0x78, 0x87, 0x6E, 0x01, 0xF1, 0x9B, 0x2A}
+ },
+ {
+ {
+ 0x04, 0xB9, 0x15, 0xBA, 0x43, 0xFE, 0xB5, 0xB6,
+ 0x04, 0xB9, 0x15, 0xBA, 0x43, 0xFE, 0xB5, 0xB6,
+ 0x04, 0xB9, 0x15, 0xBA, 0x43, 0xFE, 0xB5, 0xB6},
+ {
+ 0x42, 0xFD, 0x44, 0x30, 0x59, 0x57, 0x7F, 0xA2},
+ {
+ 0xAF, 0x37, 0xFB, 0x42, 0x1F, 0x8C, 0x40, 0x95}
+ },
+ {
+ {
+ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
+ {
+ 0x73, 0x6F, 0x6D, 0x65, 0x64, 0x61, 0x74, 0x61},
+ {
+ 0x3D, 0x12, 0x4F, 0xE2, 0x19, 0x8B, 0xA3, 0x18}
+ },
+ {
+ {
+ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+ 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
+ {
+ 0x73, 0x6F, 0x6D, 0x65, 0x64, 0x61, 0x74, 0x61},
+ {
+ 0xFB, 0xAB, 0xA1, 0xFF, 0x9D, 0x05, 0xE9, 0xB1}
+ },
+ {
+ {
+ 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
+ 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55,
+ 0xFE, 0xDC, 0xBA, 0x98, 0x76, 0x54, 0x32, 0x10},
+ {
+ 0x73, 0x6F, 0x6D, 0x65, 0x64, 0x61, 0x74, 0x61},
+ {
+ 0x18, 0xd7, 0x48, 0xe5, 0x63, 0x62, 0x05, 0x72}
+ },
+ {
+ {
+ 0x03, 0x52, 0x02, 0x07, 0x67, 0x20, 0x82, 0x17,
+ 0x86, 0x02, 0x87, 0x66, 0x59, 0x08, 0x21, 0x98,
+ 0x64, 0x05, 0x6A, 0xBD, 0xFE, 0xA9, 0x34, 0x57},
+ {
+ 0x73, 0x71, 0x75, 0x69, 0x67, 0x67, 0x6C, 0x65},
+ {
+ 0xc0, 0x7d, 0x2a, 0x0f, 0xa5, 0x66, 0xfa, 0x30}
+ },
+ {
+ {
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
+ 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02},
+ {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+ {
+ 0xe6, 0xe6, 0xdd, 0x5b, 0x7e, 0x72, 0x29, 0x74}
+ },
+ {
+ {
+ 0x10, 0x46, 0x10, 0x34, 0x89, 0x98, 0x80, 0x20,
+ 0x91, 0x07, 0xD0, 0x15, 0x89, 0x19, 0x01, 0x01,
+ 0x19, 0x07, 0x92, 0x10, 0x98, 0x1A, 0x01, 0x01},
+ {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+ {
+ 0xe1, 0xef, 0x62, 0xc3, 0x32, 0xfe, 0x82, 0x5b}
+ }
+ };
+
+ char result[8];
+ int i;
+ tripledes_ctx des3;
+
+ for (i = 0; i < sizeof (testdata) / sizeof (*testdata); ++i)
+ {
+ tripledes_set3keys (&des3, testdata[i].key,
+ testdata[i].key + 8, testdata[i].key + 16);
+
+ tripledes_ecb_encrypt (&des3, testdata[i].plain, result);
+ if (memcmp (testdata[i].cipher, result, 8))
+ {
+ return 1;
+ }
+
+ tripledes_ecb_decrypt (&des3, testdata[i].cipher, result);
+ if (memcmp (testdata[i].plain, result, 8))
+ {
+ return 1;
+ }
+ }
+ }
+
+ return 0;
+}
- des,
Simon Josefsson <=
- Re: des, Ralf Wildenhues, 2005/10/14
- Re: des, Ralf Wildenhues, 2005/10/14
- Re: des, Simon Josefsson, 2005/10/14