//package com.peterfranza.svnadmin.server.acldb.utils;
public class UnixCrypt {
//
// Null constructor - can't instantiate class
private UnixCrypt() {
}
private static final char[] saltChars = ("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789./"
.toCharArray());
private static final int ITERATIONS = 16;
private static final int con_salt[] = { 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, };
private static final boolean shifts2[] = { false, false, true, true, true,
true, true, true, false, true, true, true, true, true, true, false };
private static final int skb[][] = {
{
/* 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, }, };
private static final int SPtrans[][] = {
{
/* 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 } };
private static final int cov_2char[] = { 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 };
private static final int byteToUnsigned(byte b) {
int value = (int) b;
return (value >= 0 ? value : value + 256);
}
private static int fourBytesToInt(byte b[], int offset) {
int value;
value = byteToUnsigned(b[offset++]);
value |= (byteToUnsigned(b[offset++]) << 8);
value |= (byteToUnsigned(b[offset++]) << 16);
value |= (byteToUnsigned(b[offset++]) << 24);
return (value);
}
private static final void intToFourBytes(int iValue, byte b[], int offset) {
b[offset++] = (byte) ((iValue) & 0xff);
b[offset++] = (byte) ((iValue >>> 8) & 0xff);
b[offset++] = (byte) ((iValue >>> 16) & 0xff);
b[offset++] = (byte) ((iValue >>> 24) & 0xff);
}
private static final void PERM_OP(int a, int b, int n, int m, int results[]) {
int t;
t = ((a >>> n) ^ b) & m;
a ^= t << n;
b ^= t;
results[0] = a;
results[1] = b;
}
private static final int HPERM_OP(int a, int n, int m) {
int t;
t = ((a << (16 - n)) ^ a) & m;
a = a ^ t ^ (t >>> (16 - n));
return (a);
}
private static int[] des_set_key(byte key[]) {
int schedule[] = new int[ITERATIONS * 2];
int c = fourBytesToInt(key, 0);
int d = fourBytesToInt(key, 4);
int results[] = new int[2];
PERM_OP(d, c, 4, 0x0f0f0f0f, results);
d = results[0];
c = results[1];
c = HPERM_OP(c, -2, 0xcccc0000);
d = HPERM_OP(d, -2, 0xcccc0000);
PERM_OP(d, c, 1, 0x55555555, results);
d = results[0];
c = results[1];
PERM_OP(c, d, 8, 0x00ff00ff, results);
c = results[0];
d = results[1];
PERM_OP(d, c, 1, 0x55555555, results);
d = results[0];
c = results[1];
d = (((d & 0x000000ff) << 16) | (d & 0x0000ff00)
| ((d & 0x00ff0000) >>> 16) | ((c & 0xf0000000) >>> 4));
c &= 0x0fffffff;
int s, t;
int j = 0;
for (int 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;
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)];
schedule[j++] = ((t << 16) | (s & 0x0000ffff)) & 0xffffffff;
s = ((s >>> 16) | (t & 0xffff0000));
s = (s << 4) | (s >>> 28);
schedule[j++] = s & 0xffffffff;
}
return (schedule);
}
private static final int D_ENCRYPT(int L, int R, int S, int E0, int E1,
int s[]) {
int t, u, v;
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];
return (L);
}
private static final int[] body(int schedule[], int Eswap0, int Eswap1) {
int left = 0;
int right = 0;
int t = 0;
for (int j = 0; j < 25; j++) {
for (int i = 0; i < ITERATIONS * 2; i += 4) {
left = D_ENCRYPT(left, right, i, Eswap0, Eswap1, schedule);
right = D_ENCRYPT(right, left, i + 2, Eswap0, Eswap1, schedule);
}
t = left;
left = right;
right = t;
}
t = right;
right = (left >>> 1) | (left << 31);
left = (t >>> 1) | (t << 31);
left &= 0xffffffff;
right &= 0xffffffff;
int results[] = new int[2];
PERM_OP(right, left, 1, 0x55555555, results);
right = results[0];
left = results[1];
PERM_OP(left, right, 8, 0x00ff00ff, results);
left = results[0];
right = results[1];
PERM_OP(right, left, 2, 0x33333333, results);
right = results[0];
left = results[1];
PERM_OP(left, right, 16, 0x0000ffff, results);
left = results[0];
right = results[1];
PERM_OP(right, left, 4, 0x0f0f0f0f, results);
right = results[0];
left = results[1];
int out[] = new int[2];
out[0] = left;
out[1] = right;
return (out);
}
/**
* <P>
* Encrypt a password given the cleartext password and a "salt".
* </P>
*
* @param salt
* A two-character string representing the salt used to iterate
* the encryption engine in lots of different ways. If you are
* generating a new encryption then this value should be
* randomised.
* @param original
* The password to be encrypted.
* @return A string consisting of the 2-character salt followed by the
* encrypted password.
*/
public static final String crypt(String salt, String original) {
while (salt.length() < 2)
salt += "A";
StringBuffer buffer = new StringBuffer(" ");
char charZero = salt.charAt(0);
char charOne = salt.charAt(1);
buffer.setCharAt(0, charZero);
buffer.setCharAt(1, charOne);
int Eswap0 = con_salt[(int) charZero];
int Eswap1 = con_salt[(int) charOne] << 4;
byte key[] = new byte[8];
for (int i = 0; i < key.length; i++)
key[i] = (byte) 0;
for (int i = 0; i < key.length && i < original.length(); i++) {
int iChar = (int) original.charAt(i);
key[i] = (byte) (iChar << 1);
}
int schedule[] = des_set_key(key);
int out[] = body(schedule, Eswap0, Eswap1);
byte b[] = new byte[9];
intToFourBytes(out[0], b, 0);
intToFourBytes(out[1], b, 4);
b[8] = 0;
for (int i = 2, y = 0, u = 0x80; i < 13; i++) {
for (int j = 0, c = 0; j < 6; j++) {
c <<= 1;
if (((int) b[y] & u) != 0)
c |= 1;
u >>>= 1;
if (u == 0) {
y++;
u = 0x80;
}
buffer.setCharAt(i, (char) cov_2char[c]);
}
}
return (buffer.toString());
}
/**
* <P>
* Encrypt a password given the cleartext password. This method generates a
* random salt using the 'java.util.Random' class.
* </P>
*
* @param original
* The password to be encrypted.
* @return A string consisting of the 2-character salt followed by the
* encrypted password.
*/
public static final String crypt(String original) {
java.util.Random randomGenerator = new java.util.Random();
int numSaltChars = saltChars.length;
String salt;
salt = (new StringBuffer())
.append(saltChars[Math.abs(randomGenerator.nextInt())
% numSaltChars])
.append(saltChars[Math.abs(randomGenerator.nextInt())
% numSaltChars]).toString();
return crypt(salt, original);
}
/**
* <P>
* Check that <I>enteredPassword</I> encrypts to <I>encryptedPassword</I>.
* </P>
*
* @param encryptedPassword
* The <I>encryptedPassword</I>. The first two characters are
* assumed to be the salt. This string would be the same as one
* found in a Unix <U>/etc/passwd</U> file.
* @param enteredPassword
* The password as entered by the user (or otherwise aquired).
* @return <B>true</B> if the password should be considered correct.
*/
public final static boolean matches(String encryptedPassword,
String enteredPassword) {
String salt = encryptedPassword.substring(0, 3);
String newCrypt = crypt(salt, enteredPassword);
return newCrypt.equals(encryptedPassword);
}
}
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