/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.] */
#include <openssl/des.h>
#include <stdlib.h>
#include "internal.h"
static const uint32_t des_skb[8][64] = {
{/* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
0x00000000L, 0x00000010L, 0x20000000L, 0x20000010L, 0x00010000L,
0x00010010L, 0x20010000L, 0x20010010L, 0x00000800L, 0x00000810L,
0x20000800L, 0x20000810L, 0x00010800L, 0x00010810L, 0x20010800L,
0x20010810L, 0x00000020L, 0x00000030L, 0x20000020L, 0x20000030L,
0x00010020L, 0x00010030L, 0x20010020L, 0x20010030L, 0x00000820L,
0x00000830L, 0x20000820L, 0x20000830L, 0x00010820L, 0x00010830L,
0x20010820L, 0x20010830L, 0x00080000L, 0x00080010L, 0x20080000L,
0x20080010L, 0x00090000L, 0x00090010L, 0x20090000L, 0x20090010L,
0x00080800L, 0x00080810L, 0x20080800L, 0x20080810L, 0x00090800L,
0x00090810L, 0x20090800L, 0x20090810L, 0x00080020L, 0x00080030L,
0x20080020L, 0x20080030L, 0x00090020L, 0x00090030L, 0x20090020L,
0x20090030L, 0x00080820L, 0x00080830L, 0x20080820L, 0x20080830L,
0x00090820L, 0x00090830L, 0x20090820L, 0x20090830L, },
{/* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
0x00000000L, 0x02000000L, 0x00002000L, 0x02002000L, 0x00200000L,
0x02200000L, 0x00202000L, 0x02202000L, 0x00000004L, 0x02000004L,
0x00002004L, 0x02002004L, 0x00200004L, 0x02200004L, 0x00202004L,
0x02202004L, 0x00000400L, 0x02000400L, 0x00002400L, 0x02002400L,
0x00200400L, 0x02200400L, 0x00202400L, 0x02202400L, 0x00000404L,
0x02000404L, 0x00002404L, 0x02002404L, 0x00200404L, 0x02200404L,
0x00202404L, 0x02202404L, 0x10000000L, 0x12000000L, 0x10002000L,
0x12002000L, 0x10200000L, 0x12200000L, 0x10202000L, 0x12202000L,
0x10000004L, 0x12000004L, 0x10002004L, 0x12002004L, 0x10200004L,
0x12200004L, 0x10202004L, 0x12202004L, 0x10000400L, 0x12000400L,
0x10002400L, 0x12002400L, 0x10200400L, 0x12200400L, 0x10202400L,
0x12202400L, 0x10000404L, 0x12000404L, 0x10002404L, 0x12002404L,
0x10200404L, 0x12200404L, 0x10202404L, 0x12202404L, },
{/* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
0x00000000L, 0x00000001L, 0x00040000L, 0x00040001L, 0x01000000L,
0x01000001L, 0x01040000L, 0x01040001L, 0x00000002L, 0x00000003L,
0x00040002L, 0x00040003L, 0x01000002L, 0x01000003L, 0x01040002L,
0x01040003L, 0x00000200L, 0x00000201L, 0x00040200L, 0x00040201L,
0x01000200L, 0x01000201L, 0x01040200L, 0x01040201L, 0x00000202L,
0x00000203L, 0x00040202L, 0x00040203L, 0x01000202L, 0x01000203L,
0x01040202L, 0x01040203L, 0x08000000L, 0x08000001L, 0x08040000L,
0x08040001L, 0x09000000L, 0x09000001L, 0x09040000L, 0x09040001L,
0x08000002L, 0x08000003L, 0x08040002L, 0x08040003L, 0x09000002L,
0x09000003L, 0x09040002L, 0x09040003L, 0x08000200L, 0x08000201L,
0x08040200L, 0x08040201L, 0x09000200L, 0x09000201L, 0x09040200L,
0x09040201L, 0x08000202L, 0x08000203L, 0x08040202L, 0x08040203L,
0x09000202L, 0x09000203L, 0x09040202L, 0x09040203L, },
{/* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
0x00000000L, 0x00100000L, 0x00000100L, 0x00100100L, 0x00000008L,
0x00100008L, 0x00000108L, 0x00100108L, 0x00001000L, 0x00101000L,
0x00001100L, 0x00101100L, 0x00001008L, 0x00101008L, 0x00001108L,
0x00101108L, 0x04000000L, 0x04100000L, 0x04000100L, 0x04100100L,
0x04000008L, 0x04100008L, 0x04000108L, 0x04100108L, 0x04001000L,
0x04101000L, 0x04001100L, 0x04101100L, 0x04001008L, 0x04101008L,
0x04001108L, 0x04101108L, 0x00020000L, 0x00120000L, 0x00020100L,
0x00120100L, 0x00020008L, 0x00120008L, 0x00020108L, 0x00120108L,
0x00021000L, 0x00121000L, 0x00021100L, 0x00121100L, 0x00021008L,
0x00121008L, 0x00021108L, 0x00121108L, 0x04020000L, 0x04120000L,
0x04020100L, 0x04120100L, 0x04020008L, 0x04120008L, 0x04020108L,
0x04120108L, 0x04021000L, 0x04121000L, 0x04021100L, 0x04121100L,
0x04021008L, 0x04121008L, 0x04021108L, 0x04121108L, },
{/* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
0x00000000L, 0x10000000L, 0x00010000L, 0x10010000L, 0x00000004L,
0x10000004L, 0x00010004L, 0x10010004L, 0x20000000L, 0x30000000L,
0x20010000L, 0x30010000L, 0x20000004L, 0x30000004L, 0x20010004L,
0x30010004L, 0x00100000L, 0x10100000L, 0x00110000L, 0x10110000L,
0x00100004L, 0x10100004L, 0x00110004L, 0x10110004L, 0x20100000L,
0x30100000L, 0x20110000L, 0x30110000L, 0x20100004L, 0x30100004L,
0x20110004L, 0x30110004L, 0x00001000L, 0x10001000L, 0x00011000L,
0x10011000L, 0x00001004L, 0x10001004L, 0x00011004L, 0x10011004L,
0x20001000L, 0x30001000L, 0x20011000L, 0x30011000L, 0x20001004L,
0x30001004L, 0x20011004L, 0x30011004L, 0x00101000L, 0x10101000L,
0x00111000L, 0x10111000L, 0x00101004L, 0x10101004L, 0x00111004L,
0x10111004L, 0x20101000L, 0x30101000L, 0x20111000L, 0x30111000L,
0x20101004L, 0x30101004L, 0x20111004L, 0x30111004L, },
{/* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
0x00000000L, 0x08000000L, 0x00000008L, 0x08000008L, 0x00000400L,
0x08000400L, 0x00000408L, 0x08000408L, 0x00020000L, 0x08020000L,
0x00020008L, 0x08020008L, 0x00020400L, 0x08020400L, 0x00020408L,
0x08020408L, 0x00000001L, 0x08000001L, 0x00000009L, 0x08000009L,
0x00000401L, 0x08000401L, 0x00000409L, 0x08000409L, 0x00020001L,
0x08020001L, 0x00020009L, 0x08020009L, 0x00020401L, 0x08020401L,
0x00020409L, 0x08020409L, 0x02000000L, 0x0A000000L, 0x02000008L,
0x0A000008L, 0x02000400L, 0x0A000400L, 0x02000408L, 0x0A000408L,
0x02020000L, 0x0A020000L, 0x02020008L, 0x0A020008L, 0x02020400L,
0x0A020400L, 0x02020408L, 0x0A020408L, 0x02000001L, 0x0A000001L,
0x02000009L, 0x0A000009L, 0x02000401L, 0x0A000401L, 0x02000409L,
0x0A000409L, 0x02020001L, 0x0A020001L, 0x02020009L, 0x0A020009L,
0x02020401L, 0x0A020401L, 0x02020409L, 0x0A020409L, },
{/* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
0x00000000L, 0x00000100L, 0x00080000L, 0x00080100L, 0x01000000L,
0x01000100L, 0x01080000L, 0x01080100L, 0x00000010L, 0x00000110L,
0x00080010L, 0x00080110L, 0x01000010L, 0x01000110L, 0x01080010L,
0x01080110L, 0x00200000L, 0x00200100L, 0x00280000L, 0x00280100L,
0x01200000L, 0x01200100L, 0x01280000L, 0x01280100L, 0x00200010L,
0x00200110L, 0x00280010L, 0x00280110L, 0x01200010L, 0x01200110L,
0x01280010L, 0x01280110L, 0x00000200L, 0x00000300L, 0x00080200L,
0x00080300L, 0x01000200L, 0x01000300L, 0x01080200L, 0x01080300L,
0x00000210L, 0x00000310L, 0x00080210L, 0x00080310L, 0x01000210L,
0x01000310L, 0x01080210L, 0x01080310L, 0x00200200L, 0x00200300L,
0x00280200L, 0x00280300L, 0x01200200L, 0x01200300L, 0x01280200L,
0x01280300L, 0x00200210L, 0x00200310L, 0x00280210L, 0x00280310L,
0x01200210L, 0x01200310L, 0x01280210L, 0x01280310L, },
{/* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
0x00000000L, 0x04000000L, 0x00040000L, 0x04040000L, 0x00000002L,
0x04000002L, 0x00040002L, 0x04040002L, 0x00002000L, 0x04002000L,
0x00042000L, 0x04042000L, 0x00002002L, 0x04002002L, 0x00042002L,
0x04042002L, 0x00000020L, 0x04000020L, 0x00040020L, 0x04040020L,
0x00000022L, 0x04000022L, 0x00040022L, 0x04040022L, 0x00002020L,
0x04002020L, 0x00042020L, 0x04042020L, 0x00002022L, 0x04002022L,
0x00042022L, 0x04042022L, 0x00000800L, 0x04000800L, 0x00040800L,
0x04040800L, 0x00000802L, 0x04000802L, 0x00040802L, 0x04040802L,
0x00002800L, 0x04002800L, 0x00042800L, 0x04042800L, 0x00002802L,
0x04002802L, 0x00042802L, 0x04042802L, 0x00000820L, 0x04000820L,
0x00040820L, 0x04040820L, 0x00000822L, 0x04000822L, 0x00040822L,
0x04040822L, 0x00002820L, 0x04002820L, 0x00042820L, 0x04042820L,
0x00002822L, 0x04002822L, 0x00042822L, 0x04042822L, }};
static const uint32_t DES_SPtrans[8][64] = {
{/* nibble 0 */
0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L, 0x02000000L,
0x00080802L, 0x00080002L, 0x02000002L, 0x00080802L, 0x02080800L,
0x02080000L, 0x00000802L, 0x02000802L, 0x02000000L, 0x00000000L,
0x00080002L, 0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L, 0x00000002L,
0x00000800L, 0x00080800L, 0x02080002L, 0x00000800L, 0x02000802L,
0x02080002L, 0x00000000L, 0x00000000L, 0x02080802L, 0x02000800L,
0x00080002L, 0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L, 0x00080802L,
0x00000002L, 0x02000002L, 0x02080000L, 0x02080802L, 0x00080800L,
0x02080000L, 0x02000802L, 0x02000000L, 0x00000802L, 0x00080002L,
0x00000000L, 0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L, },
{/* nibble 1 */
0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L, 0x40000010L,
0x00008010L, 0x40008000L, 0x00108000L, 0x00008000L, 0x40100010L,
0x00000010L, 0x40008000L, 0x00100010L, 0x40108000L, 0x40100000L,
0x00000010L, 0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L, 0x40008010L,
0x00108010L, 0x40108000L, 0x40000010L, 0x40000000L, 0x00100000L,
0x00008010L, 0x40108010L, 0x00100010L, 0x40108000L, 0x40008000L,
0x00108010L, 0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L, 0x00008000L,
0x40000000L, 0x00108010L, 0x40008010L, 0x40108000L, 0x00008000L,
0x00000000L, 0x40000010L, 0x00000010L, 0x40108010L, 0x00108000L,
0x40100000L, 0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L, },
{/* nibble 2 */
0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L, 0x00040001L,
0x04000000L, 0x04000101L, 0x00040100L, 0x04000100L, 0x00040000L,
0x04040000L, 0x00000001L, 0x04040101L, 0x00000101L, 0x00000001L,
0x04040001L, 0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L, 0x04040001L,
0x04000100L, 0x00040101L, 0x04040000L, 0x00040100L, 0x00000000L,
0x04000000L, 0x00040101L, 0x04040100L, 0x00000100L, 0x00000001L,
0x00040000L, 0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L, 0x00040001L,
0x04000000L, 0x04040101L, 0x00000001L, 0x00040101L, 0x04000001L,
0x04000000L, 0x04040101L, 0x00040000L, 0x04000100L, 0x04000101L,
0x00040100L, 0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L, },
{/* nibble 3 */
0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L, 0x00000000L,
0x10400000L, 0x10001008L, 0x00400008L, 0x10401000L, 0x10000008L,
0x10000000L, 0x00001008L, 0x10000008L, 0x00401008L, 0x00400000L,
0x10000000L, 0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L, 0x00001008L,
0x00000000L, 0x00400008L, 0x10401000L, 0x10001000L, 0x10400008L,
0x10401008L, 0x00400000L, 0x10400008L, 0x00001008L, 0x00400000L,
0x10000008L, 0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L, 0x00000000L,
0x10400008L, 0x10401000L, 0x00001000L, 0x10000000L, 0x10401008L,
0x00401008L, 0x00400000L, 0x10401008L, 0x00000008L, 0x10001000L,
0x00401008L, 0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L, },
{/* nibble 4 */
0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L, 0x08010020L,
0x08000400L, 0x00010420L, 0x08010000L, 0x00010000L, 0x00000020L,
0x08000020L, 0x00010400L, 0x08000420L, 0x08010020L, 0x08010400L,
0x00000000L, 0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L, 0x00000020L,
0x08000420L, 0x08010420L, 0x00010020L, 0x08010000L, 0x00000400L,
0x00000420L, 0x08010400L, 0x08010400L, 0x08000420L, 0x00010020L,
0x08010000L, 0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L, 0x00010420L,
0x08000000L, 0x00000400L, 0x00010020L, 0x08000420L, 0x00000400L,
0x00000000L, 0x08010420L, 0x08010020L, 0x08010400L, 0x00000420L,
0x00010000L, 0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L, },
{/* nibble 5 */
0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L, 0x00200040L,
0x00002000L, 0x80002040L, 0x00200000L, 0x00002040L, 0x80202040L,
0x00202000L, 0x80000000L, 0x80002000L, 0x80000040L, 0x80200000L,
0x00202040L, 0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L, 0x80202040L,
0x80200000L, 0x80000000L, 0x00002040L, 0x00000040L, 0x00202000L,
0x00202040L, 0x80002000L, 0x00002040L, 0x80000000L, 0x80002000L,
0x00202040L, 0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L, 0x00200040L,
0x80202040L, 0x00202000L, 0x00000040L, 0x80202040L, 0x00202000L,
0x00200000L, 0x80002040L, 0x80000040L, 0x80200000L, 0x00202040L,
0x00000000L, 0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L, },
{/* nibble 6 */
0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L, 0x01004204L,
0x00004004L, 0x00004200L, 0x00000000L, 0x01000000L, 0x01000204L,
0x00000204L, 0x01004000L, 0x00000004L, 0x01004200L, 0x01004000L,
0x00000204L, 0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L, 0x01004004L,
0x00004204L, 0x01004200L, 0x00000004L, 0x00004204L, 0x01004004L,
0x00000200L, 0x01000000L, 0x00004204L, 0x01004000L, 0x01004004L,
0x00000204L, 0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L, 0x00000200L,
0x01000004L, 0x00000004L, 0x01000200L, 0x00000000L, 0x01000204L,
0x01000200L, 0x00004200L, 0x00000204L, 0x00004000L, 0x01004204L,
0x01000000L, 0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L, },
{/* nibble 7 */
0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L, 0x20020000L,
0x00800080L, 0x20800000L, 0x20820080L, 0x00000080L, 0x20000000L,
0x00820000L, 0x00020080L, 0x00820080L, 0x20020080L, 0x20000080L,
0x20800000L, 0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L, 0x20000000L,
0x00800000L, 0x20020080L, 0x20800080L, 0x00800000L, 0x00020000L,
0x20820000L, 0x00000080L, 0x00800000L, 0x00020000L, 0x20000080L,
0x20820080L, 0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L, 0x20820000L,
0x00000080L, 0x00800080L, 0x20020000L, 0x20820080L, 0x00800000L,
0x20800000L, 0x20000080L, 0x00820000L, 0x00020080L, 0x20020080L,
0x20800000L, 0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L, }};
#define HPERM_OP(a, t, n, m) \
((t) = ((((a) << (16 - (n))) ^ (a)) & (m)), \
(a) = (a) ^ (t) ^ (t >> (16 - (n))))
void DES_set_key(const DES_cblock *key, DES_key_schedule *schedule) {
static const int shifts2[16] = {0, 0, 1, 1, 1, 1, 1, 1,
0, 1, 1, 1, 1, 1, 1, 0};
uint32_t c, d, t, s, t2;
const uint8_t *in;
int i;
in = key->bytes;
c2l(in, c);
c2l(in, d);
/* do PC1 in 47 simple operations :-)
* Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
* for the inspiration. :-) */
PERM_OP(d, c, t, 4, 0x0f0f0f0fL);
HPERM_OP(c, t, -2, 0xcccc0000L);
HPERM_OP(d, t, -2, 0xcccc0000L);
PERM_OP(d, c, t, 1, 0x55555555L);
PERM_OP(c, d, t, 8, 0x00ff00ffL);
PERM_OP(d, c, t, 1, 0x55555555L);
d = (((d & 0x000000ffL) << 16L) | (d & 0x0000ff00L) |
((d & 0x00ff0000L) >> 16L) | ((c & 0xf0000000L) >> 4L));
c &= 0x0fffffffL;
for (i = 0; i < ITERATIONS; i++) {
if (shifts2[i]) {
c = ((c >> 2L) | (c << 26L));
d = ((d >> 2L) | (d << 26L));
} else {
c = ((c >> 1L) | (c << 27L));
d = ((d >> 1L) | (d << 27L));
}
c &= 0x0fffffffL;
d &= 0x0fffffffL;
/* could be a few less shifts but I am to lazy at this
* point in time to investigate */
s = des_skb[0][(c) & 0x3f] |
des_skb[1][((c >> 6L) & 0x03) | ((c >> 7L) & 0x3c)] |
des_skb[2][((c >> 13L) & 0x0f) | ((c >> 14L) & 0x30)] |
des_skb[3][((c >> 20L) & 0x01) | ((c >> 21L) & 0x06) |
((c >> 22L) & 0x38)];
t = des_skb[4][(d) & 0x3f] |
des_skb[5][((d >> 7L) & 0x03) | ((d >> 8L) & 0x3c)] |
des_skb[6][(d >> 15L) & 0x3f] |
des_skb[7][((d >> 21L) & 0x0f) | ((d >> 22L) & 0x30)];
/* table contained 0213 4657 */
t2 = ((t << 16L) | (s & 0x0000ffffL)) & 0xffffffffL;
schedule->subkeys[i][0] = ROTATE(t2, 30) & 0xffffffffL;
t2 = ((s >> 16L) | (t & 0xffff0000L));
schedule->subkeys[i][1] = ROTATE(t2, 26) & 0xffffffffL;
}
}
static const uint8_t kOddParity[256] = {
1, 1, 2, 2, 4, 4, 7, 7, 8, 8, 11, 11, 13, 13, 14,
14, 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28,
31, 31, 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44,
44, 47, 47, 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59,
61, 61, 62, 62, 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74,
74, 76, 76, 79, 79, 81, 81, 82, 82, 84, 84, 87, 87, 88, 88,
91, 91, 93, 93, 94, 94, 97, 97, 98, 98, 100, 100, 103, 103, 104,
104, 107, 107, 109, 109, 110, 110, 112, 112, 115, 115, 117, 117, 118, 118,
121, 121, 122, 122, 124, 124, 127, 127, 128, 128, 131, 131, 133, 133, 134,
134, 137, 137, 138, 138, 140, 140, 143, 143, 145, 145, 146, 146, 148, 148,
151, 151, 152, 152, 155, 155, 157, 157, 158, 158, 161, 161, 162, 162, 164,
164, 167, 167, 168, 168, 171, 171, 173, 173, 174, 174, 176, 176, 179, 179,
181, 181, 182, 182, 185, 185, 186, 186, 188, 188, 191, 191, 193, 193, 194,
194, 196, 196, 199, 199, 200, 200, 203, 203, 205, 205, 206, 206, 208, 208,
211, 211, 213, 213, 214, 214, 217, 217, 218, 218, 220, 220, 223, 223, 224,
224, 227, 227, 229, 229, 230, 230, 233, 233, 234, 234, 236, 236, 239, 239,
241, 241, 242, 242, 244, 244, 247, 247, 248, 248, 251, 251, 253, 253, 254,
254
};
void DES_set_odd_parity(DES_cblock *key) {
unsigned i;
for (i = 0; i < DES_KEY_SZ; i++) {
key->bytes[i] = kOddParity[key->bytes[i]];
}
}
static void DES_encrypt1(uint32_t *data, const DES_key_schedule *ks, int enc) {
uint32_t l, r, t, u;
r = data[0];
l = data[1];
IP(r, l);
/* Things have been modified so that the initial rotate is done outside
* the loop. This required the DES_SPtrans values in sp.h to be
* rotated 1 bit to the right. One perl script later and things have a
* 5% speed up on a sparc2. Thanks to Richard Outerbridge
* <71755.204@CompuServe.COM> for pointing this out. */
/* clear the top bits on machines with 8byte longs */
/* shift left by 2 */
r = ROTATE(r, 29) & 0xffffffffL;
l = ROTATE(l, 29) & 0xffffffffL;
/* I don't know if it is worth the effort of loop unrolling the
* inner loop */
if (enc) {
D_ENCRYPT(ks, l, r, 0);
D_ENCRYPT(ks, r, l, 1);
D_ENCRYPT(ks, l, r, 2);
D_ENCRYPT(ks, r, l, 3);
D_ENCRYPT(ks, l, r, 4);
D_ENCRYPT(ks, r, l, 5);
D_ENCRYPT(ks, l, r, 6);
D_ENCRYPT(ks, r, l, 7);
D_ENCRYPT(ks, l, r, 8);
D_ENCRYPT(ks, r, l, 9);
D_ENCRYPT(ks, l, r, 10);
D_ENCRYPT(ks, r, l, 11);
D_ENCRYPT(ks, l, r, 12);
D_ENCRYPT(ks, r, l, 13);
D_ENCRYPT(ks, l, r, 14);
D_ENCRYPT(ks, r, l, 15);
} else {
D_ENCRYPT(ks, l, r, 15);
D_ENCRYPT(ks, r, l, 14);
D_ENCRYPT(ks, l, r, 13);
D_ENCRYPT(ks, r, l, 12);
D_ENCRYPT(ks, l, r, 11);
D_ENCRYPT(ks, r, l, 10);
D_ENCRYPT(ks, l, r, 9);
D_ENCRYPT(ks, r, l, 8);
D_ENCRYPT(ks, l, r, 7);
D_ENCRYPT(ks, r, l, 6);
D_ENCRYPT(ks, l, r, 5);
D_ENCRYPT(ks, r, l, 4);
D_ENCRYPT(ks, l, r, 3);
D_ENCRYPT(ks, r, l, 2);
D_ENCRYPT(ks, l, r, 1);
D_ENCRYPT(ks, r, l, 0);
}
/* rotate and clear the top bits on machines with 8byte longs */
l = ROTATE(l, 3) & 0xffffffffL;
r = ROTATE(r, 3) & 0xffffffffL;
FP(r, l);
data[0] = l;
data[1] = r;
}
static void DES_encrypt2(uint32_t *data, const DES_key_schedule *ks, int enc) {
uint32_t l, r, t, u;
r = data[0];
l = data[1];
/* Things have been modified so that the initial rotate is done outside the
* loop. This required the DES_SPtrans values in sp.h to be rotated 1 bit to
* the right. One perl script later and things have a 5% speed up on a
* sparc2. Thanks to Richard Outerbridge <71755.204@CompuServe.COM> for
* pointing this out. */
/* clear the top bits on machines with 8byte longs */
r = ROTATE(r, 29) & 0xffffffffL;
l = ROTATE(l, 29) & 0xffffffffL;
/* I don't know if it is worth the effort of loop unrolling the
* inner loop */
if (enc) {
D_ENCRYPT(ks, l, r, 0);
D_ENCRYPT(ks, r, l, 1);
D_ENCRYPT(ks, l, r, 2);
D_ENCRYPT(ks, r, l, 3);
D_ENCRYPT(ks, l, r, 4);
D_ENCRYPT(ks, r, l, 5);
D_ENCRYPT(ks, l, r, 6);
D_ENCRYPT(ks, r, l, 7);
D_ENCRYPT(ks, l, r, 8);
D_ENCRYPT(ks, r, l, 9);
D_ENCRYPT(ks, l, r, 10);
D_ENCRYPT(ks, r, l, 11);
D_ENCRYPT(ks, l, r, 12);
D_ENCRYPT(ks, r, l, 13);
D_ENCRYPT(ks, l, r, 14);
D_ENCRYPT(ks, r, l, 15);
} else {
D_ENCRYPT(ks, l, r, 15);
D_ENCRYPT(ks, r, l, 14);
D_ENCRYPT(ks, l, r, 13);
D_ENCRYPT(ks, r, l, 12);
D_ENCRYPT(ks, l, r, 11);
D_ENCRYPT(ks, r, l, 10);
D_ENCRYPT(ks, l, r, 9);
D_ENCRYPT(ks, r, l, 8);
D_ENCRYPT(ks, l, r, 7);
D_ENCRYPT(ks, r, l, 6);
D_ENCRYPT(ks, l, r, 5);
D_ENCRYPT(ks, r, l, 4);
D_ENCRYPT(ks, l, r, 3);
D_ENCRYPT(ks, r, l, 2);
D_ENCRYPT(ks, l, r, 1);
D_ENCRYPT(ks, r, l, 0);
}
/* rotate and clear the top bits on machines with 8byte longs */
data[0] = ROTATE(l, 3) & 0xffffffffL;
data[1] = ROTATE(r, 3) & 0xffffffffL;
}
/* DES_encrypt3 is not static because it's used in decrepit. */
void DES_encrypt3(uint32_t *data, const DES_key_schedule *ks1,
const DES_key_schedule *ks2, const DES_key_schedule *ks3) {
uint32_t l, r;
l = data[0];
r = data[1];
IP(l, r);
data[0] = l;
data[1] = r;
DES_encrypt2((uint32_t *)data, ks1, DES_ENCRYPT);
DES_encrypt2((uint32_t *)data, ks2, DES_DECRYPT);
DES_encrypt2((uint32_t *)data, ks3, DES_ENCRYPT);
l = data[0];
r = data[1];
FP(r, l);
data[0] = l;
data[1] = r;
}
/* DES_decrypt3 is not static because it's used in decrepit. */
void DES_decrypt3(uint32_t *data, const DES_key_schedule *ks1,
const DES_key_schedule *ks2, const DES_key_schedule *ks3) {
uint32_t l, r;
l = data[0];
r = data[1];
IP(l, r);
data[0] = l;
data[1] = r;
DES_encrypt2((uint32_t *)data, ks3, DES_DECRYPT);
DES_encrypt2((uint32_t *)data, ks2, DES_ENCRYPT);
DES_encrypt2((uint32_t *)data, ks1, DES_DECRYPT);
l = data[0];
r = data[1];
FP(r, l);
data[0] = l;
data[1] = r;
}
void DES_ecb_encrypt(const DES_cblock *in_block, DES_cblock *out_block,
const DES_key_schedule *schedule, int is_encrypt) {
uint32_t l;
uint32_t ll[2];
const uint8_t *in = in_block->bytes;
uint8_t *out = out_block->bytes;
c2l(in, l);
ll[0] = l;
c2l(in, l);
ll[1] = l;
DES_encrypt1(ll, schedule, is_encrypt);
l = ll[0];
l2c(l, out);
l = ll[1];
l2c(l, out);
ll[0] = ll[1] = 0;
}
void DES_ncbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const DES_key_schedule *schedule, DES_cblock *ivec,
int enc) {
uint32_t tin0, tin1;
uint32_t tout0, tout1, xor0, xor1;
uint32_t tin[2];
unsigned char *iv;
iv = ivec->bytes;
if (enc) {
c2l(iv, tout0);
c2l(iv, tout1);
for (; len >= 8; len -= 8) {
c2l(in, tin0);
c2l(in, tin1);
tin0 ^= tout0;
tin[0] = tin0;
tin1 ^= tout1;
tin[1] = tin1;
DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT);
tout0 = tin[0];
l2c(tout0, out);
tout1 = tin[1];
l2c(tout1, out);
}
if (len != 0) {
c2ln(in, tin0, tin1, len);
tin0 ^= tout0;
tin[0] = tin0;
tin1 ^= tout1;
tin[1] = tin1;
DES_encrypt1((uint32_t *)tin, schedule, DES_ENCRYPT);
tout0 = tin[0];
l2c(tout0, out);
tout1 = tin[1];
l2c(tout1, out);
}
iv = ivec->bytes;
l2c(tout0, iv);
l2c(tout1, iv);
} else {
c2l(iv, xor0);
c2l(iv, xor1);
for (; len >= 8; len -= 8) {
c2l(in, tin0);
tin[0] = tin0;
c2l(in, tin1);
tin[1] = tin1;
DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT);
tout0 = tin[0] ^ xor0;
tout1 = tin[1] ^ xor1;
l2c(tout0, out);
l2c(tout1, out);
xor0 = tin0;
xor1 = tin1;
}
if (len != 0) {
c2l(in, tin0);
tin[0] = tin0;
c2l(in, tin1);
tin[1] = tin1;
DES_encrypt1((uint32_t *)tin, schedule, DES_DECRYPT);
tout0 = tin[0] ^ xor0;
tout1 = tin[1] ^ xor1;
l2cn(tout0, tout1, out, len);
xor0 = tin0;
xor1 = tin1;
}
iv = ivec->bytes;
l2c(xor0, iv);
l2c(xor1, iv);
}
tin[0] = tin[1] = 0;
}
void DES_ecb3_encrypt(const DES_cblock *input, DES_cblock *output,
const DES_key_schedule *ks1, const DES_key_schedule *ks2,
const DES_key_schedule *ks3, int enc) {
uint32_t l0, l1;
uint32_t ll[2];
const uint8_t *in = input->bytes;
uint8_t *out = output->bytes;
c2l(in, l0);
c2l(in, l1);
ll[0] = l0;
ll[1] = l1;
if (enc) {
DES_encrypt3(ll, ks1, ks2, ks3);
} else {
DES_decrypt3(ll, ks1, ks2, ks3);
}
l0 = ll[0];
l1 = ll[1];
l2c(l0, out);
l2c(l1, out);
}
void DES_ede3_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
const DES_key_schedule *ks3, DES_cblock *ivec,
int enc) {
uint32_t tin0, tin1;
uint32_t tout0, tout1, xor0, xor1;
uint32_t tin[2];
uint8_t *iv;
iv = ivec->bytes;
if (enc) {
c2l(iv, tout0);
c2l(iv, tout1);
for (; len >= 8; len -= 8) {
c2l(in, tin0);
c2l(in, tin1);
tin0 ^= tout0;
tin1 ^= tout1;
tin[0] = tin0;
tin[1] = tin1;
DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3);
tout0 = tin[0];
tout1 = tin[1];
l2c(tout0, out);
l2c(tout1, out);
}
if (len != 0) {
c2ln(in, tin0, tin1, len);
tin0 ^= tout0;
tin1 ^= tout1;
tin[0] = tin0;
tin[1] = tin1;
DES_encrypt3((uint32_t *)tin, ks1, ks2, ks3);
tout0 = tin[0];
tout1 = tin[1];
l2c(tout0, out);
l2c(tout1, out);
}
iv = ivec->bytes;
l2c(tout0, iv);
l2c(tout1, iv);
} else {
uint32_t t0, t1;
c2l(iv, xor0);
c2l(iv, xor1);
for (; len >= 8; len -= 8) {
c2l(in, tin0);
c2l(in, tin1);
t0 = tin0;
t1 = tin1;
tin[0] = tin0;
tin[1] = tin1;
DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3);
tout0 = tin[0];
tout1 = tin[1];
tout0 ^= xor0;
tout1 ^= xor1;
l2c(tout0, out);
l2c(tout1, out);
xor0 = t0;
xor1 = t1;
}
if (len != 0) {
c2l(in, tin0);
c2l(in, tin1);
t0 = tin0;
t1 = tin1;
tin[0] = tin0;
tin[1] = tin1;
DES_decrypt3((uint32_t *)tin, ks1, ks2, ks3);
tout0 = tin[0];
tout1 = tin[1];
tout0 ^= xor0;
tout1 ^= xor1;
l2cn(tout0, tout1, out, len);
xor0 = t0;
xor1 = t1;
}
iv = ivec->bytes;
l2c(xor0, iv);
l2c(xor1, iv);
}
tin[0] = tin[1] = 0;
}
void DES_ede2_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t len,
const DES_key_schedule *ks1,
const DES_key_schedule *ks2,
DES_cblock *ivec,
int enc) {
DES_ede3_cbc_encrypt(in, out, len, ks1, ks2, ks1, ivec, enc);
}
/* Deprecated functions. */
void DES_set_key_unchecked(const DES_cblock *key, DES_key_schedule *schedule) {
DES_set_key(key, schedule);
}
