/* fcrypt.c */ /* Copyright (C) 1993 Eric Young - see README for more details */ /*- * $Id: fcrypt.c,v 1.1.1.1 1994/09/30 14:49:51 csgr Exp $ */ #include /* Eric Young. * 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 */ 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 unsigned long SPtrans[8][64]={ /* nibble 0 */ 0x00820200, 0x00020000, 0x80800000, 0x80820200, 0x00800000, 0x80020200, 0x80020000, 0x80800000, 0x80020200, 0x00820200, 0x00820000, 0x80000200, 0x80800200, 0x00800000, 0x00000000, 0x80020000, 0x00020000, 0x80000000, 0x00800200, 0x00020200, 0x80820200, 0x00820000, 0x80000200, 0x00800200, 0x80000000, 0x00000200, 0x00020200, 0x80820000, 0x00000200, 0x80800200, 0x80820000, 0x00000000, 0x00000000, 0x80820200, 0x00800200, 0x80020000, 0x00820200, 0x00020000, 0x80000200, 0x00800200, 0x80820000, 0x00000200, 0x00020200, 0x80800000, 0x80020200, 0x80000000, 0x80800000, 0x00820000, 0x80820200, 0x00020200, 0x00820000, 0x80800200, 0x00800000, 0x80000200, 0x80020000, 0x00000000, 0x00020000, 0x00800000, 0x80800200, 0x00820200, 0x80000000, 0x80820000, 0x00000200, 0x80020200, /* nibble 1 */ 0x10042004, 0x00000000, 0x00042000, 0x10040000, 0x10000004, 0x00002004, 0x10002000, 0x00042000, 0x00002000, 0x10040004, 0x00000004, 0x10002000, 0x00040004, 0x10042000, 0x10040000, 0x00000004, 0x00040000, 0x10002004, 0x10040004, 0x00002000, 0x00042004, 0x10000000, 0x00000000, 0x00040004, 0x10002004, 0x00042004, 0x10042000, 0x10000004, 0x10000000, 0x00040000, 0x00002004, 0x10042004, 0x00040004, 0x10042000, 0x10002000, 0x00042004, 0x10042004, 0x00040004, 0x10000004, 0x00000000, 0x10000000, 0x00002004, 0x00040000, 0x10040004, 0x00002000, 0x10000000, 0x00042004, 0x10002004, 0x10042000, 0x00002000, 0x00000000, 0x10000004, 0x00000004, 0x10042004, 0x00042000, 0x10040000, 0x10040004, 0x00040000, 0x00002004, 0x10002000, 0x10002004, 0x00000004, 0x10040000, 0x00042000, /* nibble 2 */ 0x41000000, 0x01010040, 0x00000040, 0x41000040, 0x40010000, 0x01000000, 0x41000040, 0x00010040, 0x01000040, 0x00010000, 0x01010000, 0x40000000, 0x41010040, 0x40000040, 0x40000000, 0x41010000, 0x00000000, 0x40010000, 0x01010040, 0x00000040, 0x40000040, 0x41010040, 0x00010000, 0x41000000, 0x41010000, 0x01000040, 0x40010040, 0x01010000, 0x00010040, 0x00000000, 0x01000000, 0x40010040, 0x01010040, 0x00000040, 0x40000000, 0x00010000, 0x40000040, 0x40010000, 0x01010000, 0x41000040, 0x00000000, 0x01010040, 0x00010040, 0x41010000, 0x40010000, 0x01000000, 0x41010040, 0x40000000, 0x40010040, 0x41000000, 0x01000000, 0x41010040, 0x00010000, 0x01000040, 0x41000040, 0x00010040, 0x01000040, 0x00000000, 0x41010000, 0x40000040, 0x41000000, 0x40010040, 0x00000040, 0x01010000, /* nibble 3 */ 0x00100402, 0x04000400, 0x00000002, 0x04100402, 0x00000000, 0x04100000, 0x04000402, 0x00100002, 0x04100400, 0x04000002, 0x04000000, 0x00000402, 0x04000002, 0x00100402, 0x00100000, 0x04000000, 0x04100002, 0x00100400, 0x00000400, 0x00000002, 0x00100400, 0x04000402, 0x04100000, 0x00000400, 0x00000402, 0x00000000, 0x00100002, 0x04100400, 0x04000400, 0x04100002, 0x04100402, 0x00100000, 0x04100002, 0x00000402, 0x00100000, 0x04000002, 0x00100400, 0x04000400, 0x00000002, 0x04100000, 0x04000402, 0x00000000, 0x00000400, 0x00100002, 0x00000000, 0x04100002, 0x04100400, 0x00000400, 0x04000000, 0x04100402, 0x00100402, 0x00100000, 0x04100402, 0x00000002, 0x04000400, 0x00100402, 0x00100002, 0x00100400, 0x04100000, 0x04000402, 0x00000402, 0x04000000, 0x04000002, 0x04100400, /* nibble 4 */ 0x02000000, 0x00004000, 0x00000100, 0x02004108, 0x02004008, 0x02000100, 0x00004108, 0x02004000, 0x00004000, 0x00000008, 0x02000008, 0x00004100, 0x02000108, 0x02004008, 0x02004100, 0x00000000, 0x00004100, 0x02000000, 0x00004008, 0x00000108, 0x02000100, 0x00004108, 0x00000000, 0x02000008, 0x00000008, 0x02000108, 0x02004108, 0x00004008, 0x02004000, 0x00000100, 0x00000108, 0x02004100, 0x02004100, 0x02000108, 0x00004008, 0x02004000, 0x00004000, 0x00000008, 0x02000008, 0x02000100, 0x02000000, 0x00004100, 0x02004108, 0x00000000, 0x00004108, 0x02000000, 0x00000100, 0x00004008, 0x02000108, 0x00000100, 0x00000000, 0x02004108, 0x02004008, 0x02004100, 0x00000108, 0x00004000, 0x00004100, 0x02004008, 0x02000100, 0x00000108, 0x00000008, 0x00004108, 0x02004000, 0x02000008, /* nibble 5 */ 0x20000010, 0x00080010, 0x00000000, 0x20080800, 0x00080010, 0x00000800, 0x20000810, 0x00080000, 0x00000810, 0x20080810, 0x00080800, 0x20000000, 0x20000800, 0x20000010, 0x20080000, 0x00080810, 0x00080000, 0x20000810, 0x20080010, 0x00000000, 0x00000800, 0x00000010, 0x20080800, 0x20080010, 0x20080810, 0x20080000, 0x20000000, 0x00000810, 0x00000010, 0x00080800, 0x00080810, 0x20000800, 0x00000810, 0x20000000, 0x20000800, 0x00080810, 0x20080800, 0x00080010, 0x00000000, 0x20000800, 0x20000000, 0x00000800, 0x20080010, 0x00080000, 0x00080010, 0x20080810, 0x00080800, 0x00000010, 0x20080810, 0x00080800, 0x00080000, 0x20000810, 0x20000010, 0x20080000, 0x00080810, 0x00000000, 0x00000800, 0x20000010, 0x20000810, 0x20080800, 0x20080000, 0x00000810, 0x00000010, 0x20080010, /* nibble 6 */ 0x00001000, 0x00000080, 0x00400080, 0x00400001, 0x00401081, 0x00001001, 0x00001080, 0x00000000, 0x00400000, 0x00400081, 0x00000081, 0x00401000, 0x00000001, 0x00401080, 0x00401000, 0x00000081, 0x00400081, 0x00001000, 0x00001001, 0x00401081, 0x00000000, 0x00400080, 0x00400001, 0x00001080, 0x00401001, 0x00001081, 0x00401080, 0x00000001, 0x00001081, 0x00401001, 0x00000080, 0x00400000, 0x00001081, 0x00401000, 0x00401001, 0x00000081, 0x00001000, 0x00000080, 0x00400000, 0x00401001, 0x00400081, 0x00001081, 0x00001080, 0x00000000, 0x00000080, 0x00400001, 0x00000001, 0x00400080, 0x00000000, 0x00400081, 0x00400080, 0x00001080, 0x00000081, 0x00001000, 0x00401081, 0x00400000, 0x00401080, 0x00000001, 0x00001001, 0x00401081, 0x00400001, 0x00401080, 0x00401000, 0x00001001, /* nibble 7 */ 0x08200020, 0x08208000, 0x00008020, 0x00000000, 0x08008000, 0x00200020, 0x08200000, 0x08208020, 0x00000020, 0x08000000, 0x00208000, 0x00008020, 0x00208020, 0x08008020, 0x08000020, 0x08200000, 0x00008000, 0x00208020, 0x00200020, 0x08008000, 0x08208020, 0x08000020, 0x00000000, 0x00208000, 0x08000000, 0x00200000, 0x08008020, 0x08200020, 0x00200000, 0x00008000, 0x08208000, 0x00000020, 0x00200000, 0x00008000, 0x08000020, 0x08208020, 0x00008020, 0x08000000, 0x00000000, 0x00208000, 0x08200020, 0x08008020, 0x08008000, 0x00200020, 0x08208000, 0x00000020, 0x00200020, 0x08008000, 0x08208020, 0x00200000, 0x08200000, 0x08000020, 0x00208000, 0x00008020, 0x08008020, 0x08200000, 0x00000020, 0x08208000, 0x00208020, 0x00000000, 0x08000000, 0x08200020, 0x00008000, 0x00208020}; static unsigned long 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 body(); static int des_set___key(); 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,4,0x0f0f0f0f); HPERM_OP(c,t,-2,0xcccc0000); HPERM_OP(d,t,-2,0xcccc0000); PERM_OP (d,c,t,1,0x55555555); PERM_OP (c,d,t,8,0x00ff00ff); PERM_OP (d,c,t,1,0x55555555); d= (((d&0x000000ff)<<16)| (d&0x0000ff00) | ((d&0x00ff0000)>>16)|((c&0xf0000000)>>4)); c&=0x0fffffff; for (i=0; i>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))&0xffffffff; s= ((s>>16)|(t&0xffff0000)); s=(s<<4)|(s>>28); *(k++)=s&0xffffffff; } 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 * DO NOT use the alternative version on machines with 8 byte longs. */ #ifdef ALT_ECB #define D_ENCRYPT(L,R,S) \ v=(R^(R>>16)); \ u=(v&E0); \ v=(v&E1); \ u=((u^(u<<16))^R^s[S ])<<2; \ t=(v^(v<<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) \ v=(R^(R>>16)); \ u=(v&E0); \ v=(v&E1); \ u=(u^(u<<16))^R^s[S ]; \ t=(v^(v<<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 unsigned 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, }; unsigned 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 }; char *crypt(buf,salt) 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 :-(. */ if (salt[0] == '\0') salt[0]='A'; if (salt[1] == '\0') salt[1]='A'; 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); } static int body(out0,out1,ks,Eswap0,Eswap1) unsigned long *out0,*out1; des_key_schedule *ks; unsigned long Eswap0,Eswap1; { register unsigned long l,r,t,u,v; #ifdef ALT_ECB 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>>1)|(l<<31); l=(t>>1)|(t<<31); /* clear the top bits on machines with 8byte longs */ l&=0xffffffff; r&=0xffffffff; 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); }