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Diffstat (limited to 'src/crypto/des/des.c')
-rw-r--r-- | src/crypto/des/des.c | 710 |
1 files changed, 710 insertions, 0 deletions
diff --git a/src/crypto/des/des.c b/src/crypto/des/des.c new file mode 100644 index 0000000..6d00011 --- /dev/null +++ b/src/crypto/des/des.c @@ -0,0 +1,710 @@ +/* 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 "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; + uint32_t *k; + int i; + + k = &schedule->ks->deslong[0]; + 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; + *(k++) = ROTATE(t2, 30) & 0xffffffffL; + + t2 = ((s >> 16L) | (t & 0xffff0000L)); + *(k++) = ROTATE(t2, 26) & 0xffffffffL; + } +} + +static void DES_encrypt1(uint32_t *data, const DES_key_schedule *ks, int enc) { + uint32_t l, r, t, u; + const uint32_t *s; + + 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; + + s = ks->ks->deslong; + /* I don't know if it is worth the effort of loop unrolling the + * inner loop */ + if (enc) { + D_ENCRYPT(l, r, 0); /* 1 */ + D_ENCRYPT(r, l, 2); /* 2 */ + D_ENCRYPT(l, r, 4); /* 3 */ + D_ENCRYPT(r, l, 6); /* 4 */ + D_ENCRYPT(l, r, 8); /* 5 */ + D_ENCRYPT(r, l, 10); /* 6 */ + D_ENCRYPT(l, r, 12); /* 7 */ + D_ENCRYPT(r, l, 14); /* 8 */ + D_ENCRYPT(l, r, 16); /* 9 */ + D_ENCRYPT(r, l, 18); /* 10 */ + D_ENCRYPT(l, r, 20); /* 11 */ + D_ENCRYPT(r, l, 22); /* 12 */ + D_ENCRYPT(l, r, 24); /* 13 */ + D_ENCRYPT(r, l, 26); /* 14 */ + D_ENCRYPT(l, r, 28); /* 15 */ + D_ENCRYPT(r, l, 30); /* 16 */ + } else { + D_ENCRYPT(l, r, 30); /* 16 */ + D_ENCRYPT(r, l, 28); /* 15 */ + D_ENCRYPT(l, r, 26); /* 14 */ + D_ENCRYPT(r, l, 24); /* 13 */ + D_ENCRYPT(l, r, 22); /* 12 */ + D_ENCRYPT(r, l, 20); /* 11 */ + D_ENCRYPT(l, r, 18); /* 10 */ + D_ENCRYPT(r, l, 16); /* 9 */ + D_ENCRYPT(l, r, 14); /* 8 */ + D_ENCRYPT(r, l, 12); /* 7 */ + D_ENCRYPT(l, r, 10); /* 6 */ + D_ENCRYPT(r, l, 8); /* 5 */ + D_ENCRYPT(l, r, 6); /* 4 */ + D_ENCRYPT(r, l, 4); /* 3 */ + D_ENCRYPT(l, r, 2); /* 2 */ + D_ENCRYPT(r, l, 0); /* 1 */ + } + + /* 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; + const uint32_t *s; + + 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; + + s = ks->ks->deslong; + /* I don't know if it is worth the effort of loop unrolling the + * inner loop */ + if (enc) { + D_ENCRYPT(l, r, 0); /* 1 */ + D_ENCRYPT(r, l, 2); /* 2 */ + D_ENCRYPT(l, r, 4); /* 3 */ + D_ENCRYPT(r, l, 6); /* 4 */ + D_ENCRYPT(l, r, 8); /* 5 */ + D_ENCRYPT(r, l, 10); /* 6 */ + D_ENCRYPT(l, r, 12); /* 7 */ + D_ENCRYPT(r, l, 14); /* 8 */ + D_ENCRYPT(l, r, 16); /* 9 */ + D_ENCRYPT(r, l, 18); /* 10 */ + D_ENCRYPT(l, r, 20); /* 11 */ + D_ENCRYPT(r, l, 22); /* 12 */ + D_ENCRYPT(l, r, 24); /* 13 */ + D_ENCRYPT(r, l, 26); /* 14 */ + D_ENCRYPT(l, r, 28); /* 15 */ + D_ENCRYPT(r, l, 30); /* 16 */ + } else { + D_ENCRYPT(l, r, 30); /* 16 */ + D_ENCRYPT(r, l, 28); /* 15 */ + D_ENCRYPT(l, r, 26); /* 14 */ + D_ENCRYPT(r, l, 24); /* 13 */ + D_ENCRYPT(l, r, 22); /* 12 */ + D_ENCRYPT(r, l, 20); /* 11 */ + D_ENCRYPT(l, r, 18); /* 10 */ + D_ENCRYPT(r, l, 16); /* 9 */ + D_ENCRYPT(l, r, 14); /* 8 */ + D_ENCRYPT(r, l, 12); /* 7 */ + D_ENCRYPT(l, r, 10); /* 6 */ + D_ENCRYPT(r, l, 8); /* 5 */ + D_ENCRYPT(l, r, 6); /* 4 */ + D_ENCRYPT(r, l, 4); /* 3 */ + D_ENCRYPT(l, r, 2); /* 2 */ + D_ENCRYPT(r, l, 0); /* 1 */ + } + /* rotate and clear the top bits on machines with 8byte longs */ + data[0] = ROTATE(l, 3) & 0xffffffffL; + data[1] = ROTATE(r, 3) & 0xffffffffL; +} + +static 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; +} + +static 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_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; +} |