diff options
Diffstat (limited to 'secure/lib/libdes/fcrypt.c')
| -rw-r--r-- | secure/lib/libdes/fcrypt.c | 666 |
1 files changed, 666 insertions, 0 deletions
diff --git a/secure/lib/libdes/fcrypt.c b/secure/lib/libdes/fcrypt.c new file mode 100644 index 0000000..71960b6 --- /dev/null +++ b/secure/lib/libdes/fcrypt.c @@ -0,0 +1,666 @@ +/* lib/des/fcrypt.c */ +/* Copyright (C) 1995 Eric Young (eay@mincom.oz.au) + * All rights reserved. + * + * This file is part of an SSL implementation written + * by Eric Young (eay@mincom.oz.au). + * The implementation was written so as to conform with Netscapes SSL + * specification. This library and applications are + * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE + * as long as the following conditions are aheared to. + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. If this code is used in a product, + * Eric Young should be given attribution as the author of the parts 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 software developed by Eric Young (eay@mincom.oz.au) + * + * 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 <stdio.h> + +/* Eric Young. + * This version of crypt has been developed from my MIT compatable + * DES library. + * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au + * eay@mincom.oz.au or eay@psych.psy.uq.oz.au + */ + +#if !defined(_LIBC) || defined(NOCONST) +#define const +#endif + +typedef unsigned char des_cblock[8]; + +typedef struct des_ks_struct + { + union { + des_cblock _; + /* make sure things are correct size on machines with + * 8 byte longs */ + unsigned long pad[2]; + } ks; +#define _ ks._ + } des_key_schedule[16]; + +#define DES_KEY_SZ (sizeof(des_cblock)) +#define DES_ENCRYPT 1 +#define DES_DECRYPT 0 + +#define ITERATIONS 16 +#define HALF_ITERATIONS 8 + +#define c2l(c,l) (l =((unsigned long)(*((c)++))) , \ + l|=((unsigned long)(*((c)++)))<< 8, \ + l|=((unsigned long)(*((c)++)))<<16, \ + l|=((unsigned long)(*((c)++)))<<24) + +#define l2c(l,c) (*((c)++)=(unsigned char)(((l) )&0xff), \ + *((c)++)=(unsigned char)(((l)>> 8)&0xff), \ + *((c)++)=(unsigned char)(((l)>>16)&0xff), \ + *((c)++)=(unsigned char)(((l)>>24)&0xff)) + +static const unsigned long SPtrans[8][64]={ +{ +/* nibble 0 */ +0x00820200L, 0x00020000L, 0x80800000L, 0x80820200L, +0x00800000L, 0x80020200L, 0x80020000L, 0x80800000L, +0x80020200L, 0x00820200L, 0x00820000L, 0x80000200L, +0x80800200L, 0x00800000L, 0x00000000L, 0x80020000L, +0x00020000L, 0x80000000L, 0x00800200L, 0x00020200L, +0x80820200L, 0x00820000L, 0x80000200L, 0x00800200L, +0x80000000L, 0x00000200L, 0x00020200L, 0x80820000L, +0x00000200L, 0x80800200L, 0x80820000L, 0x00000000L, +0x00000000L, 0x80820200L, 0x00800200L, 0x80020000L, +0x00820200L, 0x00020000L, 0x80000200L, 0x00800200L, +0x80820000L, 0x00000200L, 0x00020200L, 0x80800000L, +0x80020200L, 0x80000000L, 0x80800000L, 0x00820000L, +0x80820200L, 0x00020200L, 0x00820000L, 0x80800200L, +0x00800000L, 0x80000200L, 0x80020000L, 0x00000000L, +0x00020000L, 0x00800000L, 0x80800200L, 0x00820200L, +0x80000000L, 0x80820000L, 0x00000200L, 0x80020200L, +},{ +/* nibble 1 */ +0x10042004L, 0x00000000L, 0x00042000L, 0x10040000L, +0x10000004L, 0x00002004L, 0x10002000L, 0x00042000L, +0x00002000L, 0x10040004L, 0x00000004L, 0x10002000L, +0x00040004L, 0x10042000L, 0x10040000L, 0x00000004L, +0x00040000L, 0x10002004L, 0x10040004L, 0x00002000L, +0x00042004L, 0x10000000L, 0x00000000L, 0x00040004L, +0x10002004L, 0x00042004L, 0x10042000L, 0x10000004L, +0x10000000L, 0x00040000L, 0x00002004L, 0x10042004L, +0x00040004L, 0x10042000L, 0x10002000L, 0x00042004L, +0x10042004L, 0x00040004L, 0x10000004L, 0x00000000L, +0x10000000L, 0x00002004L, 0x00040000L, 0x10040004L, +0x00002000L, 0x10000000L, 0x00042004L, 0x10002004L, +0x10042000L, 0x00002000L, 0x00000000L, 0x10000004L, +0x00000004L, 0x10042004L, 0x00042000L, 0x10040000L, +0x10040004L, 0x00040000L, 0x00002004L, 0x10002000L, +0x10002004L, 0x00000004L, 0x10040000L, 0x00042000L, +},{ +/* nibble 2 */ +0x41000000L, 0x01010040L, 0x00000040L, 0x41000040L, +0x40010000L, 0x01000000L, 0x41000040L, 0x00010040L, +0x01000040L, 0x00010000L, 0x01010000L, 0x40000000L, +0x41010040L, 0x40000040L, 0x40000000L, 0x41010000L, +0x00000000L, 0x40010000L, 0x01010040L, 0x00000040L, +0x40000040L, 0x41010040L, 0x00010000L, 0x41000000L, +0x41010000L, 0x01000040L, 0x40010040L, 0x01010000L, +0x00010040L, 0x00000000L, 0x01000000L, 0x40010040L, +0x01010040L, 0x00000040L, 0x40000000L, 0x00010000L, +0x40000040L, 0x40010000L, 0x01010000L, 0x41000040L, +0x00000000L, 0x01010040L, 0x00010040L, 0x41010000L, +0x40010000L, 0x01000000L, 0x41010040L, 0x40000000L, +0x40010040L, 0x41000000L, 0x01000000L, 0x41010040L, +0x00010000L, 0x01000040L, 0x41000040L, 0x00010040L, +0x01000040L, 0x00000000L, 0x41010000L, 0x40000040L, +0x41000000L, 0x40010040L, 0x00000040L, 0x01010000L, +},{ +/* nibble 3 */ +0x00100402L, 0x04000400L, 0x00000002L, 0x04100402L, +0x00000000L, 0x04100000L, 0x04000402L, 0x00100002L, +0x04100400L, 0x04000002L, 0x04000000L, 0x00000402L, +0x04000002L, 0x00100402L, 0x00100000L, 0x04000000L, +0x04100002L, 0x00100400L, 0x00000400L, 0x00000002L, +0x00100400L, 0x04000402L, 0x04100000L, 0x00000400L, +0x00000402L, 0x00000000L, 0x00100002L, 0x04100400L, +0x04000400L, 0x04100002L, 0x04100402L, 0x00100000L, +0x04100002L, 0x00000402L, 0x00100000L, 0x04000002L, +0x00100400L, 0x04000400L, 0x00000002L, 0x04100000L, +0x04000402L, 0x00000000L, 0x00000400L, 0x00100002L, +0x00000000L, 0x04100002L, 0x04100400L, 0x00000400L, +0x04000000L, 0x04100402L, 0x00100402L, 0x00100000L, +0x04100402L, 0x00000002L, 0x04000400L, 0x00100402L, +0x00100002L, 0x00100400L, 0x04100000L, 0x04000402L, +0x00000402L, 0x04000000L, 0x04000002L, 0x04100400L, +},{ +/* nibble 4 */ +0x02000000L, 0x00004000L, 0x00000100L, 0x02004108L, +0x02004008L, 0x02000100L, 0x00004108L, 0x02004000L, +0x00004000L, 0x00000008L, 0x02000008L, 0x00004100L, +0x02000108L, 0x02004008L, 0x02004100L, 0x00000000L, +0x00004100L, 0x02000000L, 0x00004008L, 0x00000108L, +0x02000100L, 0x00004108L, 0x00000000L, 0x02000008L, +0x00000008L, 0x02000108L, 0x02004108L, 0x00004008L, +0x02004000L, 0x00000100L, 0x00000108L, 0x02004100L, +0x02004100L, 0x02000108L, 0x00004008L, 0x02004000L, +0x00004000L, 0x00000008L, 0x02000008L, 0x02000100L, +0x02000000L, 0x00004100L, 0x02004108L, 0x00000000L, +0x00004108L, 0x02000000L, 0x00000100L, 0x00004008L, +0x02000108L, 0x00000100L, 0x00000000L, 0x02004108L, +0x02004008L, 0x02004100L, 0x00000108L, 0x00004000L, +0x00004100L, 0x02004008L, 0x02000100L, 0x00000108L, +0x00000008L, 0x00004108L, 0x02004000L, 0x02000008L, +},{ +/* nibble 5 */ +0x20000010L, 0x00080010L, 0x00000000L, 0x20080800L, +0x00080010L, 0x00000800L, 0x20000810L, 0x00080000L, +0x00000810L, 0x20080810L, 0x00080800L, 0x20000000L, +0x20000800L, 0x20000010L, 0x20080000L, 0x00080810L, +0x00080000L, 0x20000810L, 0x20080010L, 0x00000000L, +0x00000800L, 0x00000010L, 0x20080800L, 0x20080010L, +0x20080810L, 0x20080000L, 0x20000000L, 0x00000810L, +0x00000010L, 0x00080800L, 0x00080810L, 0x20000800L, +0x00000810L, 0x20000000L, 0x20000800L, 0x00080810L, +0x20080800L, 0x00080010L, 0x00000000L, 0x20000800L, +0x20000000L, 0x00000800L, 0x20080010L, 0x00080000L, +0x00080010L, 0x20080810L, 0x00080800L, 0x00000010L, +0x20080810L, 0x00080800L, 0x00080000L, 0x20000810L, +0x20000010L, 0x20080000L, 0x00080810L, 0x00000000L, +0x00000800L, 0x20000010L, 0x20000810L, 0x20080800L, +0x20080000L, 0x00000810L, 0x00000010L, 0x20080010L, +},{ +/* nibble 6 */ +0x00001000L, 0x00000080L, 0x00400080L, 0x00400001L, +0x00401081L, 0x00001001L, 0x00001080L, 0x00000000L, +0x00400000L, 0x00400081L, 0x00000081L, 0x00401000L, +0x00000001L, 0x00401080L, 0x00401000L, 0x00000081L, +0x00400081L, 0x00001000L, 0x00001001L, 0x00401081L, +0x00000000L, 0x00400080L, 0x00400001L, 0x00001080L, +0x00401001L, 0x00001081L, 0x00401080L, 0x00000001L, +0x00001081L, 0x00401001L, 0x00000080L, 0x00400000L, +0x00001081L, 0x00401000L, 0x00401001L, 0x00000081L, +0x00001000L, 0x00000080L, 0x00400000L, 0x00401001L, +0x00400081L, 0x00001081L, 0x00001080L, 0x00000000L, +0x00000080L, 0x00400001L, 0x00000001L, 0x00400080L, +0x00000000L, 0x00400081L, 0x00400080L, 0x00001080L, +0x00000081L, 0x00001000L, 0x00401081L, 0x00400000L, +0x00401080L, 0x00000001L, 0x00001001L, 0x00401081L, +0x00400001L, 0x00401080L, 0x00401000L, 0x00001001L, +},{ +/* nibble 7 */ +0x08200020L, 0x08208000L, 0x00008020L, 0x00000000L, +0x08008000L, 0x00200020L, 0x08200000L, 0x08208020L, +0x00000020L, 0x08000000L, 0x00208000L, 0x00008020L, +0x00208020L, 0x08008020L, 0x08000020L, 0x08200000L, +0x00008000L, 0x00208020L, 0x00200020L, 0x08008000L, +0x08208020L, 0x08000020L, 0x00000000L, 0x00208000L, +0x08000000L, 0x00200000L, 0x08008020L, 0x08200020L, +0x00200000L, 0x00008000L, 0x08208000L, 0x00000020L, +0x00200000L, 0x00008000L, 0x08000020L, 0x08208020L, +0x00008020L, 0x08000000L, 0x00000000L, 0x00208000L, +0x08200020L, 0x08008020L, 0x08008000L, 0x00200020L, +0x08208000L, 0x00000020L, 0x00200020L, 0x08008000L, +0x08208020L, 0x00200000L, 0x08200000L, 0x08000020L, +0x00208000L, 0x00008020L, 0x08008020L, 0x08200000L, +0x00000020L, 0x08208000L, 0x00208020L, 0x00000000L, +0x08000000L, 0x08200020L, 0x00008000L, 0x00208020L}}; +static const unsigned long 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, +} }; + +/* See ecb_encrypt.c for a pseudo description of these macros. */ +#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\ + (b)^=(t),\ + (a)^=((t)<<(n))) + +#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\ + (a)=(a)^(t)^(t>>(16-(n))))\ + +static const int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0}; + +#ifndef NOPROTO +static int body(unsigned long *out0, unsigned long *out1, + des_key_schedule ks, unsigned long Eswap0, unsigned long Eswap1); +static int des_set_key(des_cblock (*key), des_key_schedule schedule); +#else +static int body(); +static int des_set_key(); +#endif + +static int des_set_key(key, schedule) +des_cblock (*key); +des_key_schedule schedule; + { + register unsigned long c,d,t,s; + register unsigned char *in; + register unsigned long *k; + register int i; + + k=(unsigned long *)schedule; + in=(unsigned char *)key; + + c2l(in,c); + c2l(in,d); + + /* I now do it 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)<<16)| (d&0x0000ff00L) | + ((d&0x00ff0000L)>>16)|((c&0xf0000000L)>>4)); + c&=0x0fffffffL; + + for (i=0; i<ITERATIONS; i++) + { + if (shifts2[i]) + { c=((c>>2)|(c<<26)); d=((d>>2)|(d<<26)); } + else + { c=((c>>1)|(c<<27)); d=((d>>1)|(d<<27)); } + c&=0x0fffffffL; + d&=0x0fffffffL; + /* could be a few less shifts but I am to lazy at this + * point in time to investigate */ + s= skb[0][ (c )&0x3f ]| + skb[1][((c>> 6L)&0x03)|((c>> 7L)&0x3c)]| + skb[2][((c>>13L)&0x0f)|((c>>14L)&0x30)]| + skb[3][((c>>20L)&0x01)|((c>>21L)&0x06) | + ((c>>22L)&0x38)]; + t= skb[4][ (d )&0x3f ]| + skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]| + skb[6][ (d>>15L)&0x3f ]| + skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)]; + + /* table contained 0213 4657 */ + *(k++)=((t<<16)|(s&0x0000ffffL))&0xffffffffL; + s= ((s>>16)|(t&0xffff0000L)); + + s=(s<<4)|(s>>28); + *(k++)=s&0xffffffffL; + } + return(0); + } + +/****************************************************************** + * modified stuff for crypt. + ******************************************************************/ + +/* The changes to this macro may help or hinder, depending on the + * compiler and the achitecture. gcc2 always seems to do well :-). + * Inspired by Dana How <how@isl.stanford.edu> + * DO NOT use the alternative version on machines with 8 byte longs. + */ +#ifdef DES_USE_PTR +#define D_ENCRYPT(L,R,S) \ + t=(R^(R>>16)); \ + u=(t&E0); \ + t=(t&E1); \ + u=((u^(u<<16))^R^s[S ])<<2; \ + t=(t^(t<<16))^R^s[S+1]; \ + t=(t>>2)|(t<<30); \ + L^= \ + *(unsigned long *)(des_SP+0x0100+((t )&0xfc))+ \ + *(unsigned long *)(des_SP+0x0300+((t>> 8)&0xfc))+ \ + *(unsigned long *)(des_SP+0x0500+((t>>16)&0xfc))+ \ + *(unsigned long *)(des_SP+0x0700+((t>>24)&0xfc))+ \ + *(unsigned long *)(des_SP+ ((u )&0xfc))+ \ + *(unsigned long *)(des_SP+0x0200+((u>> 8)&0xfc))+ \ + *(unsigned long *)(des_SP+0x0400+((u>>16)&0xfc))+ \ + *(unsigned long *)(des_SP+0x0600+((u>>24)&0xfc)); +#else /* original version */ +#define D_ENCRYPT(L,R,S) \ + t=(R^(R>>16)); \ + u=(t&E0); \ + t=(t&E1); \ + u=(u^(u<<16))^R^s[S ]; \ + t=(t^(t<<16))^R^s[S+1]; \ + t=(t>>4)|(t<<28); \ + L^= SPtrans[1][(t )&0x3f]| \ + SPtrans[3][(t>> 8)&0x3f]| \ + SPtrans[5][(t>>16)&0x3f]| \ + SPtrans[7][(t>>24)&0x3f]| \ + SPtrans[0][(u )&0x3f]| \ + SPtrans[2][(u>> 8)&0x3f]| \ + SPtrans[4][(u>>16)&0x3f]| \ + SPtrans[6][(u>>24)&0x3f]; +#endif + +static unsigned const char con_salt[128]={ +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, +0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01, +0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09, +0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A, +0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12, +0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A, +0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22, +0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24, +0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C, +0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34, +0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C, +0x3D,0x3E,0x3F,0x00,0x00,0x00,0x00,0x00, +}; + +static unsigned const char cov_2char[64]={ +0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, +0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44, +0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C, +0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54, +0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62, +0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A, +0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72, +0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A +}; + +#ifndef NOPROTO +#ifdef PERL5 +char *des_crypt(char *buf,char *salt); +#else +char *crypt(char *buf,char *salt); +#endif +#else +#ifdef PERL5 +char *des_crypt(); +#else +char *crypt(); +#endif +#endif + +#ifdef PERL5 +char *des_crypt(buf,salt) +#else +char *crypt(buf,salt) +#endif +char *buf; +char *salt; + { + unsigned int i,j,x,y; + unsigned long Eswap0=0,Eswap1=0; + unsigned long out[2],ll; + des_cblock key; + des_key_schedule ks; + static unsigned char buff[20]; + unsigned char bb[9]; + unsigned char *b=bb; + unsigned char c,u; + + /* eay 25/08/92 + * If you call crypt("pwd","*") as often happens when you + * have * as the pwd field in /etc/passwd, the function + * returns *\0XXXXXXXXX + * The \0 makes the string look like * so the pwd "*" would + * crypt to "*". This was found when replacing the crypt in + * our shared libraries. People found that the disbled + * accounts effectivly had no passwd :-(. */ + x=buff[0]=((salt[0] == '\0')?'A':salt[0]); + Eswap0=con_salt[x]; + x=buff[1]=((salt[1] == '\0')?'A':salt[1]); + Eswap1=con_salt[x]<<4; + + for (i=0; i<8; i++) + { + c= *(buf++); + if (!c) break; + key[i]=(c<<1); + } + for (; i<8; i++) + key[i]=0; + + des_set_key((des_cblock *)(key),ks); + body(&(out[0]),&(out[1]),ks,Eswap0,Eswap1); + + ll=out[0]; l2c(ll,b); + ll=out[1]; l2c(ll,b); + y=0; + u=0x80; + bb[8]=0; + for (i=2; i<13; i++) + { + c=0; + for (j=0; j<6; j++) + { + c<<=1; + if (bb[y] & u) c|=1; + u>>=1; + if (!u) + { + y++; + u=0x80; + } + } + buff[i]=cov_2char[c]; + } + buff[13]='\0'; + return((char *)buff); + } + +static int body(out0, out1, ks, Eswap0, Eswap1) +unsigned long *out0; +unsigned long *out1; +des_key_schedule ks; +unsigned long Eswap0; +unsigned long Eswap1; + { + register unsigned long l,r,t,u; +#ifdef DES_USE_PTR + register unsigned char *des_SP=(unsigned char *)SPtrans; +#endif + register unsigned long *s; + register int i,j; + register unsigned long E0,E1; + + l=0; + r=0; + + s=(unsigned long *)ks; + E0=Eswap0; + E1=Eswap1; + + for (j=0; j<25; j++) + { + for (i=0; i<(ITERATIONS*2); i+=4) + { + D_ENCRYPT(l,r, i); /* 1 */ + D_ENCRYPT(r,l, i+2); /* 2 */ + } + t=l; + l=r; + r=t; + } + t=r; + r=(l>>1L)|(l<<31L); + l=(t>>1L)|(t<<31L); + /* clear the top bits on machines with 8byte longs */ + l&=0xffffffffL; + r&=0xffffffffL; + + PERM_OP(r,l,t, 1,0x55555555L); + PERM_OP(l,r,t, 8,0x00ff00ffL); + PERM_OP(r,l,t, 2,0x33333333L); + PERM_OP(l,r,t,16,0x0000ffffL); + PERM_OP(r,l,t, 4,0x0f0f0f0fL); + + *out0=l; + *out1=r; + return(0); + } + |
