#include <stdio.h> /* Copyright 1990, 1991 Eric Young. All Rights Reserved. * This version of crypt has been developed from my MIT compatable * DES library. * The library is available at pub/DES at ftp.psy.uq.oz.au * eay@psych.psy.uq.oz.au */ /* This file was distributed with the MudOS driver source for computers * without the crypt function in their library. * --Symposium */ typedef unsigned char des_cblock[8]; typedef struct des_ks_struct { des_cblock _; } des_key_schedule[16]; #define DES_KEY_SZ ( sizeof( des_cblock ) ) #define DES_ENCRYPT 1 #define DES_DECRYPT 0 typedef unsigned char uchar; typedef unsigned short ushort; typedef unsigned int uint; typedef unsigned long ulong; #define ITERATIONS 16 #define HALF_ITERATIONS 8 #define c2l( c, l ) ( l = ( (ulong)( *( ( c )++ ) ) ) , \ l |= ( (ulong)( *( ( c )++ ) ) ) << 8, \ l |= ( (ulong)( *( ( c )++ ) ) ) << 16, \ l |= ( (ulong)( *( ( c )++ ) ) ) << 24 ) #define l2c( l, c ) ( *( ( c )++ ) = (uchar)( ( ( l ) ) & 0xff ), \ *( ( c )++ ) = (uchar)( ( ( l ) >> 8 ) & 0xff ), \ *( ( c )++ ) = (uchar)( ( ( l ) >> 16 ) & 0xff ), \ *( ( c )++ ) = (uchar)( ( ( l ) >> 24 ) & 0xff ) ) int body( ulong *out0, ulong *out1, des_key_schedule *ks, ulong Eswap0, ulong Eswap1 ); static unsigned long SPtrans[8][64] = { /* nibble 0 */ { 0x00410100, 0x00010000, 0x40400000, 0x40410100, 0x00400000, 0x40010100, 0x40010000, 0x40400000, 0x40010100, 0x00410100, 0x00410000, 0x40000100, 0x40400100, 0x00400000, 0x00000000, 0x40010000, 0x00010000, 0x40000000, 0x00400100, 0x00010100, 0x40410100, 0x00410000, 0x40000100, 0x00400100, 0x40000000, 0x00000100, 0x00010100, 0x40410000, 0x00000100, 0x40400100, 0x40410000, 0x00000000, 0x00000000, 0x40410100, 0x00400100, 0x40010000, 0x00410100, 0x00010000, 0x40000100, 0x00400100, 0x40410000, 0x00000100, 0x00010100, 0x40400000, 0x40010100, 0x40000000, 0x40400000, 0x00410000, 0x40410100, 0x00010100, 0x00410000, 0x40400100, 0x00400000, 0x40000100, 0x40010000, 0x00000000, 0x00010000, 0x00400000, 0x40400100, 0x00410100, 0x40000000, 0x40410000, 0x00000100, 0x40010100 }, /* nibble 1 */ { 0x08021002, 0x00000000, 0x00021000, 0x08020000, 0x08000002, 0x00001002, 0x08001000, 0x00021000, 0x00001000, 0x08020002, 0x00000002, 0x08001000, 0x00020002, 0x08021000, 0x08020000, 0x00000002, 0x00020000, 0x08001002, 0x08020002, 0x00001000, 0x00021002, 0x08000000, 0x00000000, 0x00020002, 0x08001002, 0x00021002, 0x08021000, 0x08000002, 0x08000000, 0x00020000, 0x00001002, 0x08021002, 0x00020002, 0x08021000, 0x08001000, 0x00021002, 0x08021002, 0x00020002, 0x08000002, 0x00000000, 0x08000000, 0x00001002, 0x00020000, 0x08020002, 0x00001000, 0x08000000, 0x00021002, 0x08001002, 0x08021000, 0x00001000, 0x00000000, 0x08000002, 0x00000002, 0x08021002, 0x00021000, 0x08020000, 0x08020002, 0x00020000, 0x00001002, 0x08001000, 0x08001002, 0x00000002, 0x08020000, 0x00021000 }, /* nibble 2 */ { 0x20800000, 0x00808020, 0x00000020, 0x20800020, 0x20008000, 0x00800000, 0x20800020, 0x00008020, 0x00800020, 0x00008000, 0x00808000, 0x20000000, 0x20808020, 0x20000020, 0x20000000, 0x20808000, 0x00000000, 0x20008000, 0x00808020, 0x00000020, 0x20000020, 0x20808020, 0x00008000, 0x20800000, 0x20808000, 0x00800020, 0x20008020, 0x00808000, 0x00008020, 0x00000000, 0x00800000, 0x20008020, 0x00808020, 0x00000020, 0x20000000, 0x00008000, 0x20000020, 0x20008000, 0x00808000, 0x20800020, 0x00000000, 0x00808020, 0x00008020, 0x20808000, 0x20008000, 0x00800000, 0x20808020, 0x20000000, 0x20008020, 0x20800000, 0x00800000, 0x20808020, 0x00008000, 0x00800020, 0x20800020, 0x00008020, 0x00800020, 0x00000000, 0x20808000, 0x20000020, 0x20800000, 0x20008020, 0x00000020, 0x00808000 }, /* nibble 3 */ { 0x00080201, 0x02000200, 0x00000001, 0x02080201, 0x00000000, 0x02080000, 0x02000201, 0x00080001, 0x02080200, 0x02000001, 0x02000000, 0x00000201, 0x02000001, 0x00080201, 0x00080000, 0x02000000, 0x02080001, 0x00080200, 0x00000200, 0x00000001, 0x00080200, 0x02000201, 0x02080000, 0x00000200, 0x00000201, 0x00000000, 0x00080001, 0x02080200, 0x02000200, 0x02080001, 0x02080201, 0x00080000, 0x02080001, 0x00000201, 0x00080000, 0x02000001, 0x00080200, 0x02000200, 0x00000001, 0x02080000, 0x02000201, 0x00000000, 0x00000200, 0x00080001, 0x00000000, 0x02080001, 0x02080200, 0x00000200, 0x02000000, 0x02080201, 0x00080201, 0x00080000, 0x02080201, 0x00000001, 0x02000200, 0x00080201, 0x00080001, 0x00080200, 0x02080000, 0x02000201, 0x00000201, 0x02000000, 0x02000001, 0x02080200 }, /* nibble 4 */ { 0x01000000, 0x00002000, 0x00000080, 0x01002084, 0x01002004, 0x01000080, 0x00002084, 0x01002000, 0x00002000, 0x00000004, 0x01000004, 0x00002080, 0x01000084, 0x01002004, 0x01002080, 0x00000000, 0x00002080, 0x01000000, 0x00002004, 0x00000084, 0x01000080, 0x00002084, 0x00000000, 0x01000004, 0x00000004, 0x01000084, 0x01002084, 0x00002004, 0x01002000, 0x00000080, 0x00000084, 0x01002080, 0x01002080, 0x01000084, 0x00002004, 0x01002000, 0x00002000, 0x00000004, 0x01000004, 0x01000080, 0x01000000, 0x00002080, 0x01002084, 0x00000000, 0x00002084, 0x01000000, 0x00000080, 0x00002004, 0x01000084, 0x00000080, 0x00000000, 0x01002084, 0x01002004, 0x01002080, 0x00000084, 0x00002000, 0x00002080, 0x01002004, 0x01000080, 0x00000084, 0x00000004, 0x00002084, 0x01002000, 0x01000004 }, /* nibble 5 */ { 0x10000008, 0x00040008, 0x00000000, 0x10040400, 0x00040008, 0x00000400, 0x10000408, 0x00040000, 0x00000408, 0x10040408, 0x00040400, 0x10000000, 0x10000400, 0x10000008, 0x10040000, 0x00040408, 0x00040000, 0x10000408, 0x10040008, 0x00000000, 0x00000400, 0x00000008, 0x10040400, 0x10040008, 0x10040408, 0x10040000, 0x10000000, 0x00000408, 0x00000008, 0x00040400, 0x00040408, 0x10000400, 0x00000408, 0x10000000, 0x10000400, 0x00040408, 0x10040400, 0x00040008, 0x00000000, 0x10000400, 0x10000000, 0x00000400, 0x10040008, 0x00040000, 0x00040008, 0x10040408, 0x00040400, 0x00000008, 0x10040408, 0x00040400, 0x00040000, 0x10000408, 0x10000008, 0x10040000, 0x00040408, 0x00000000, 0x00000400, 0x10000008, 0x10000408, 0x10040400, 0x10040000, 0x00000408, 0x00000008, 0x10040008 }, /* nibble 6 */ { 0x00000800, 0x00000040, 0x00200040, 0x80200000, 0x80200840, 0x80000800, 0x00000840, 0x00000000, 0x00200000, 0x80200040, 0x80000040, 0x00200800, 0x80000000, 0x00200840, 0x00200800, 0x80000040, 0x80200040, 0x00000800, 0x80000800, 0x80200840, 0x00000000, 0x00200040, 0x80200000, 0x00000840, 0x80200800, 0x80000840, 0x00200840, 0x80000000, 0x80000840, 0x80200800, 0x00000040, 0x00200000, 0x80000840, 0x00200800, 0x80200800, 0x80000040, 0x00000800, 0x00000040, 0x00200000, 0x80200800, 0x80200040, 0x80000840, 0x00000840, 0x00000000, 0x00000040, 0x80200000, 0x80000000, 0x00200040, 0x00000000, 0x80200040, 0x00200040, 0x00000840, 0x80000040, 0x00000800, 0x80200840, 0x00200000, 0x00200840, 0x80000000, 0x80000800, 0x80200840, 0x80200000, 0x00200840, 0x00200800, 0x80000800 }, /* nibble 7 */ { 0x04100010, 0x04104000, 0x00004010, 0x00000000, 0x04004000, 0x00100010, 0x04100000, 0x04104010, 0x00000010, 0x04000000, 0x00104000, 0x00004010, 0x00104010, 0x04004010, 0x04000010, 0x04100000, 0x00004000, 0x00104010, 0x00100010, 0x04004000, 0x04104010, 0x04000010, 0x00000000, 0x00104000, 0x04000000, 0x00100000, 0x04004010, 0x04100010, 0x00100000, 0x00004000, 0x04104000, 0x00000010, 0x00100000, 0x00004000, 0x04000010, 0x04104010, 0x00004010, 0x04000000, 0x00000000, 0x00104000, 0x04100010, 0x04004010, 0x04004000, 0x00100010, 0x04104000, 0x00000010, 0x00100010, 0x04004000, 0x04104010, 0x00100000, 0x04100000, 0x04000010, 0x00104000, 0x00004010, 0x04004010, 0x04100000, 0x00000010, 0x04104000, 0x00104010, 0x00000000, 0x04000000, 0x04100010, 0x00004000, 0x00104010 } }; static ulong skb[8][64] = { /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ { 0x00000000, 0x00000010, 0x20000000, 0x20000010, 0x00010000, 0x00010010, 0x20010000, 0x20010010, 0x00000800, 0x00000810, 0x20000800, 0x20000810, 0x00010800, 0x00010810, 0x20010800, 0x20010810, 0x00000020, 0x00000030, 0x20000020, 0x20000030, 0x00010020, 0x00010030, 0x20010020, 0x20010030, 0x00000820, 0x00000830, 0x20000820, 0x20000830, 0x00010820, 0x00010830, 0x20010820, 0x20010830, 0x00080000, 0x00080010, 0x20080000, 0x20080010, 0x00090000, 0x00090010, 0x20090000, 0x20090010, 0x00080800, 0x00080810, 0x20080800, 0x20080810, 0x00090800, 0x00090810, 0x20090800, 0x20090810, 0x00080020, 0x00080030, 0x20080020, 0x20080030, 0x00090020, 0x00090030, 0x20090020, 0x20090030, 0x00080820, 0x00080830, 0x20080820, 0x20080830, 0x00090820, 0x00090830, 0x20090820, 0x20090830 }, /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */ { 0x00000000, 0x02000000, 0x00002000, 0x02002000, 0x00200000, 0x02200000, 0x00202000, 0x02202000, 0x00000004, 0x02000004, 0x00002004, 0x02002004, 0x00200004, 0x02200004, 0x00202004, 0x02202004, 0x00000400, 0x02000400, 0x00002400, 0x02002400, 0x00200400, 0x02200400, 0x00202400, 0x02202400, 0x00000404, 0x02000404, 0x00002404, 0x02002404, 0x00200404, 0x02200404, 0x00202404, 0x02202404, 0x10000000, 0x12000000, 0x10002000, 0x12002000, 0x10200000, 0x12200000, 0x10202000, 0x12202000, 0x10000004, 0x12000004, 0x10002004, 0x12002004, 0x10200004, 0x12200004, 0x10202004, 0x12202004, 0x10000400, 0x12000400, 0x10002400, 0x12002400, 0x10200400, 0x12200400, 0x10202400, 0x12202400, 0x10000404, 0x12000404, 0x10002404, 0x12002404, 0x10200404, 0x12200404, 0x10202404, 0x12202404 }, /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */ { 0x00000000, 0x00000001, 0x00040000, 0x00040001, 0x01000000, 0x01000001, 0x01040000, 0x01040001, 0x00000002, 0x00000003, 0x00040002, 0x00040003, 0x01000002, 0x01000003, 0x01040002, 0x01040003, 0x00000200, 0x00000201, 0x00040200, 0x00040201, 0x01000200, 0x01000201, 0x01040200, 0x01040201, 0x00000202, 0x00000203, 0x00040202, 0x00040203, 0x01000202, 0x01000203, 0x01040202, 0x01040203, 0x08000000, 0x08000001, 0x08040000, 0x08040001, 0x09000000, 0x09000001, 0x09040000, 0x09040001, 0x08000002, 0x08000003, 0x08040002, 0x08040003, 0x09000002, 0x09000003, 0x09040002, 0x09040003, 0x08000200, 0x08000201, 0x08040200, 0x08040201, 0x09000200, 0x09000201, 0x09040200, 0x09040201, 0x08000202, 0x08000203, 0x08040202, 0x08040203, 0x09000202, 0x09000203, 0x09040202, 0x09040203 }, /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */ { 0x00000000, 0x00100000, 0x00000100, 0x00100100, 0x00000008, 0x00100008, 0x00000108, 0x00100108, 0x00001000, 0x00101000, 0x00001100, 0x00101100, 0x00001008, 0x00101008, 0x00001108, 0x00101108, 0x04000000, 0x04100000, 0x04000100, 0x04100100, 0x04000008, 0x04100008, 0x04000108, 0x04100108, 0x04001000, 0x04101000, 0x04001100, 0x04101100, 0x04001008, 0x04101008, 0x04001108, 0x04101108, 0x00020000, 0x00120000, 0x00020100, 0x00120100, 0x00020008, 0x00120008, 0x00020108, 0x00120108, 0x00021000, 0x00121000, 0x00021100, 0x00121100, 0x00021008, 0x00121008, 0x00021108, 0x00121108, 0x04020000, 0x04120000, 0x04020100, 0x04120100, 0x04020008, 0x04120008, 0x04020108, 0x04120108, 0x04021000, 0x04121000, 0x04021100, 0x04121100, 0x04021008, 0x04121008, 0x04021108, 0x04121108 }, /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */ { 0x00000000, 0x10000000, 0x00010000, 0x10010000, 0x00000004, 0x10000004, 0x00010004, 0x10010004, 0x20000000, 0x30000000, 0x20010000, 0x30010000, 0x20000004, 0x30000004, 0x20010004, 0x30010004, 0x00100000, 0x10100000, 0x00110000, 0x10110000, 0x00100004, 0x10100004, 0x00110004, 0x10110004, 0x20100000, 0x30100000, 0x20110000, 0x30110000, 0x20100004, 0x30100004, 0x20110004, 0x30110004, 0x00001000, 0x10001000, 0x00011000, 0x10011000, 0x00001004, 0x10001004, 0x00011004, 0x10011004, 0x20001000, 0x30001000, 0x20011000, 0x30011000, 0x20001004, 0x30001004, 0x20011004, 0x30011004, 0x00101000, 0x10101000, 0x00111000, 0x10111000, 0x00101004, 0x10101004, 0x00111004, 0x10111004, 0x20101000, 0x30101000, 0x20111000, 0x30111000, 0x20101004, 0x30101004, 0x20111004, 0x30111004 }, /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */ { 0x00000000, 0x08000000, 0x00000008, 0x08000008, 0x00000400, 0x08000400, 0x00000408, 0x08000408, 0x00020000, 0x08020000, 0x00020008, 0x08020008, 0x00020400, 0x08020400, 0x00020408, 0x08020408, 0x00000001, 0x08000001, 0x00000009, 0x08000009, 0x00000401, 0x08000401, 0x00000409, 0x08000409, 0x00020001, 0x08020001, 0x00020009, 0x08020009, 0x00020401, 0x08020401, 0x00020409, 0x08020409, 0x02000000, 0x0A000000, 0x02000008, 0x0A000008, 0x02000400, 0x0A000400, 0x02000408, 0x0A000408, 0x02020000, 0x0A020000, 0x02020008, 0x0A020008, 0x02020400, 0x0A020400, 0x02020408, 0x0A020408, 0x02000001, 0x0A000001, 0x02000009, 0x0A000009, 0x02000401, 0x0A000401, 0x02000409, 0x0A000409, 0x02020001, 0x0A020001, 0x02020009, 0x0A020009, 0x02020401, 0x0A020401, 0x02020409, 0x0A020409 }, /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */ { 0x00000000, 0x00000100, 0x00080000, 0x00080100, 0x01000000, 0x01000100, 0x01080000, 0x01080100, 0x00000010, 0x00000110, 0x00080010, 0x00080110, 0x01000010, 0x01000110, 0x01080010, 0x01080110, 0x00200000, 0x00200100, 0x00280000, 0x00280100, 0x01200000, 0x01200100, 0x01280000, 0x01280100, 0x00200010, 0x00200110, 0x00280010, 0x00280110, 0x01200010, 0x01200110, 0x01280010, 0x01280110, 0x00000200, 0x00000300, 0x00080200, 0x00080300, 0x01000200, 0x01000300, 0x01080200, 0x01080300, 0x00000210, 0x00000310, 0x00080210, 0x00080310, 0x01000210, 0x01000310, 0x01080210, 0x01080310, 0x00200200, 0x00200300, 0x00280200, 0x00280300, 0x01200200, 0x01200300, 0x01280200, 0x01280300, 0x00200210, 0x00200310, 0x00280210, 0x00280310, 0x01200210, 0x01200310, 0x01280210, 0x01280310 }, /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */ { 0x00000000, 0x04000000, 0x00040000, 0x04040000, 0x00000002, 0x04000002, 0x00040002, 0x04040002, 0x00002000, 0x04002000, 0x00042000, 0x04042000, 0x00002002, 0x04002002, 0x00042002, 0x04042002, 0x00000020, 0x04000020, 0x00040020, 0x04040020, 0x00000022, 0x04000022, 0x00040022, 0x04040022, 0x00002020, 0x04002020, 0x00042020, 0x04042020, 0x00002022, 0x04002022, 0x00042022, 0x04042022, 0x00000800, 0x04000800, 0x00040800, 0x04040800, 0x00000802, 0x04000802, 0x00040802, 0x04040802, 0x00002800, 0x04002800, 0x00042800, 0x04042800, 0x00002802, 0x04002802, 0x00042802, 0x04042802, 0x00000820, 0x04000820, 0x00040820, 0x04040820, 0x00000822, 0x04000822, 0x00040822, 0x04040822, 0x00002820, 0x04002820, 0x00042820, 0x04042820, 0x00002822, 0x04002822, 0x00042822, 0x04042822 } }; /* 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 char shifts2[16] = { 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0 }; static int des_set_key( des_cblock *key, des_key_schedule schedule ) { register unsigned long c, d, t, s; register unsigned char *in; unsigned long *k; register int i; k = (unsigned long *)schedule; in = (uchar *)key; c2l( in, c ); c2l( in, d ); /* do PC1 in 60 simple operations */ PERM_OP( d, c, t, 4, 0x0f0f0f0f ); HPERM_OP( c, t, -2, 0xcccc0000 ); HPERM_OP( c, t, -1, 0xaaaa0000 ); HPERM_OP( c, t, 8, 0x00ff0000 ); HPERM_OP( c, t, -1, 0xaaaa0000 ); HPERM_OP( d, t, -8, 0xff000000 ); HPERM_OP( d, t, 8, 0x00ff0000 ); HPERM_OP( d, t, 2, 0x33330000 ); d = ( ( d & 0x00aa00aa ) << 7 ) | ( ( d & 0x55005500 ) >> 7 ) | ( d & 0xaa55aa55 ); d = ( d >> 8 ) | ( ( c & 0xf0000000 ) >> 4 ); c &= 0x0fffffff; 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 &= 0x0fffffff; d &= 0x0fffffff; /* 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 >> 6 ) & 0x03 )|( ( c >> 7 ) & 0x3c )]| skb[2][( (c >> 13 ) & 0x0f ) | ( ( c >> 14 ) & 0x30 )]| skb[3][( (c >> 20 ) & 0x01 ) | ( ( c >> 21 ) & 0x06 ) | ( ( c >> 22 ) & 0x38 )]; t = skb[4][( d ) & 0x3f]| skb[5][( ( d >> 7 ) & 0x03 ) | ( ( d >> 8 ) & 0x3c )]| skb[6][( d >> 15 ) & 0x3f]| skb[7][( ( d >> 21 ) & 0x0f ) | ( ( d >> 22 ) & 0x30 )]; /* table contained 0213 4657 */ *( k++ ) = ( ( t << 16 )|( s & 0x0000ffff ) ); s = ( ( s >> 16 )|( t & 0xffff0000 ) ); s = ( s << 4 )|( s >> 28 ); *( k++ ) = s; } return( 0 ); } /****************************************************************** * modified stuff for crypt. ******************************************************************/ #define D_ENCRYPT( L, R, S ) \ t = ( R << 1 ) | ( R >> 31 ); \ v = ( t ^ ( t >> 16 ) ); \ u = ( v & E0 ); \ v = ( v & E1 ); \ u = ( u ^ ( u << 16 ) ) ^ t ^ s[S ]; \ t = ( v ^ ( v << 16 ) ) ^ t ^ 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]; #define PERM_OP( a, b, t, n, m ) \ ( ( t ) = ( ( ( ( a ) >> ( n ) ) ^ ( b ) ) & ( m ) ), \ ( b ) ^= ( t ), \ ( a ) ^= ( ( t ) << ( n ) ) ) uchar 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, }; uchar 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 }; char *crypt( char *buf, char *salt ) { unsigned int i, j, x, y; ulong Eswap0, Eswap1; ulong out[2], ll; des_cblock key; des_key_schedule ks; static uchar buff[20]; uchar bb[9]; uchar *b = bb; uchar c, u; x = buff[0] = salt[0]; Eswap0 = con_salt[x]; x = buff[1] = 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]; } return ( (char *)buff ); } int body( ulong *out0, ulong *out1, des_key_schedule *ks, ulong Eswap0, ulong Eswap1 ) { register unsigned long l, r, t, u, v; register unsigned long *s; register int i, j; register unsigned long E0, E1; l = 0; r = 0; s = (ulong *)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 = l; l = r; r = t; PERM_OP( r, l, t, 1, 0x55555555 ); PERM_OP( l, r, t, 8, 0x00ff00ff ); PERM_OP( r, l, t, 2, 0x33333333 ); PERM_OP( l, r, t, 16, 0x0000ffff ); PERM_OP( r, l, t, 4, 0x0f0f0f0f ); *out0 = l; *out1 = r; return( 0 ); }