+package org.feistymeow.encryption;\r
+\r
+import java.util.ArrayList;\r
+\r
+/****************************************************************************\r
+ * Java-based implementation of the unix UnixCrypt(3) command\r
+ *\r
+ * Based upon C source code written by Eric Young, eay@psych.uq.oz.au\r
+ * Java conversion by John F. Dumas, jdumas@zgs.com\r
+ *\r
+ * Found at http://locutus.kingwoodcable.com/jfd/UnixCrypt.html\r
+ * Minor optimizations by Wes Biggs, wes@cacas.org\r
+ *\r
+ * Eric's original code is licensed under the BSD license. As this is\r
+ * derivative, the same license applies.\r
+ *\r
+ * Note: UnixCrypt.class is much smaller when compiled with javac -O\r
+ ****************************************************************************/\r
+\r
+public class UnixCrypt \r
+{\r
+ private UnixCrypt() {} // defined so class can't be instantiated.\r
+\r
+ private static final int ITERATIONS = 16;\r
+\r
+ private static final boolean shifts2[] = {\r
+ false, false, true, true, true, true, true, true,\r
+ false, true, true, true, true, true, true, false\r
+ };\r
+\r
+ private static final int skb[][] = {\r
+ {\r
+ /* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */\r
+ 0x00000000, 0x00000010, 0x20000000, 0x20000010, \r
+ 0x00010000, 0x00010010, 0x20010000, 0x20010010, \r
+ 0x00000800, 0x00000810, 0x20000800, 0x20000810, \r
+ 0x00010800, 0x00010810, 0x20010800, 0x20010810, \r
+ 0x00000020, 0x00000030, 0x20000020, 0x20000030, \r
+ 0x00010020, 0x00010030, 0x20010020, 0x20010030, \r
+ 0x00000820, 0x00000830, 0x20000820, 0x20000830, \r
+ 0x00010820, 0x00010830, 0x20010820, 0x20010830, \r
+ 0x00080000, 0x00080010, 0x20080000, 0x20080010, \r
+ 0x00090000, 0x00090010, 0x20090000, 0x20090010, \r
+ 0x00080800, 0x00080810, 0x20080800, 0x20080810, \r
+ 0x00090800, 0x00090810, 0x20090800, 0x20090810, \r
+ 0x00080020, 0x00080030, 0x20080020, 0x20080030, \r
+ 0x00090020, 0x00090030, 0x20090020, 0x20090030, \r
+ 0x00080820, 0x00080830, 0x20080820, 0x20080830, \r
+ 0x00090820, 0x00090830, 0x20090820, 0x20090830, \r
+ },\r
+ {\r
+ /* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */\r
+ 0x00000000, 0x02000000, 0x00002000, 0x02002000, \r
+ 0x00200000, 0x02200000, 0x00202000, 0x02202000, \r
+ 0x00000004, 0x02000004, 0x00002004, 0x02002004, \r
+ 0x00200004, 0x02200004, 0x00202004, 0x02202004, \r
+ 0x00000400, 0x02000400, 0x00002400, 0x02002400, \r
+ 0x00200400, 0x02200400, 0x00202400, 0x02202400, \r
+ 0x00000404, 0x02000404, 0x00002404, 0x02002404, \r
+ 0x00200404, 0x02200404, 0x00202404, 0x02202404, \r
+ 0x10000000, 0x12000000, 0x10002000, 0x12002000, \r
+ 0x10200000, 0x12200000, 0x10202000, 0x12202000, \r
+ 0x10000004, 0x12000004, 0x10002004, 0x12002004, \r
+ 0x10200004, 0x12200004, 0x10202004, 0x12202004, \r
+ 0x10000400, 0x12000400, 0x10002400, 0x12002400, \r
+ 0x10200400, 0x12200400, 0x10202400, 0x12202400, \r
+ 0x10000404, 0x12000404, 0x10002404, 0x12002404, \r
+ 0x10200404, 0x12200404, 0x10202404, 0x12202404, \r
+ },\r
+ {\r
+ /* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */\r
+ 0x00000000, 0x00000001, 0x00040000, 0x00040001, \r
+ 0x01000000, 0x01000001, 0x01040000, 0x01040001, \r
+ 0x00000002, 0x00000003, 0x00040002, 0x00040003, \r
+ 0x01000002, 0x01000003, 0x01040002, 0x01040003, \r
+ 0x00000200, 0x00000201, 0x00040200, 0x00040201, \r
+ 0x01000200, 0x01000201, 0x01040200, 0x01040201, \r
+ 0x00000202, 0x00000203, 0x00040202, 0x00040203, \r
+ 0x01000202, 0x01000203, 0x01040202, 0x01040203, \r
+ 0x08000000, 0x08000001, 0x08040000, 0x08040001, \r
+ 0x09000000, 0x09000001, 0x09040000, 0x09040001, \r
+ 0x08000002, 0x08000003, 0x08040002, 0x08040003, \r
+ 0x09000002, 0x09000003, 0x09040002, 0x09040003, \r
+ 0x08000200, 0x08000201, 0x08040200, 0x08040201, \r
+ 0x09000200, 0x09000201, 0x09040200, 0x09040201, \r
+ 0x08000202, 0x08000203, 0x08040202, 0x08040203, \r
+ 0x09000202, 0x09000203, 0x09040202, 0x09040203, \r
+ },\r
+ {\r
+ /* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */\r
+ 0x00000000, 0x00100000, 0x00000100, 0x00100100, \r
+ 0x00000008, 0x00100008, 0x00000108, 0x00100108, \r
+ 0x00001000, 0x00101000, 0x00001100, 0x00101100, \r
+ 0x00001008, 0x00101008, 0x00001108, 0x00101108, \r
+ 0x04000000, 0x04100000, 0x04000100, 0x04100100, \r
+ 0x04000008, 0x04100008, 0x04000108, 0x04100108, \r
+ 0x04001000, 0x04101000, 0x04001100, 0x04101100, \r
+ 0x04001008, 0x04101008, 0x04001108, 0x04101108, \r
+ 0x00020000, 0x00120000, 0x00020100, 0x00120100, \r
+ 0x00020008, 0x00120008, 0x00020108, 0x00120108, \r
+ 0x00021000, 0x00121000, 0x00021100, 0x00121100, \r
+ 0x00021008, 0x00121008, 0x00021108, 0x00121108, \r
+ 0x04020000, 0x04120000, 0x04020100, 0x04120100, \r
+ 0x04020008, 0x04120008, 0x04020108, 0x04120108, \r
+ 0x04021000, 0x04121000, 0x04021100, 0x04121100, \r
+ 0x04021008, 0x04121008, 0x04021108, 0x04121108, \r
+ },\r
+ {\r
+ /* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */\r
+ 0x00000000, 0x10000000, 0x00010000, 0x10010000, \r
+ 0x00000004, 0x10000004, 0x00010004, 0x10010004, \r
+ 0x20000000, 0x30000000, 0x20010000, 0x30010000, \r
+ 0x20000004, 0x30000004, 0x20010004, 0x30010004, \r
+ 0x00100000, 0x10100000, 0x00110000, 0x10110000, \r
+ 0x00100004, 0x10100004, 0x00110004, 0x10110004, \r
+ 0x20100000, 0x30100000, 0x20110000, 0x30110000, \r
+ 0x20100004, 0x30100004, 0x20110004, 0x30110004, \r
+ 0x00001000, 0x10001000, 0x00011000, 0x10011000, \r
+ 0x00001004, 0x10001004, 0x00011004, 0x10011004, \r
+ 0x20001000, 0x30001000, 0x20011000, 0x30011000, \r
+ 0x20001004, 0x30001004, 0x20011004, 0x30011004, \r
+ 0x00101000, 0x10101000, 0x00111000, 0x10111000, \r
+ 0x00101004, 0x10101004, 0x00111004, 0x10111004, \r
+ 0x20101000, 0x30101000, 0x20111000, 0x30111000, \r
+ 0x20101004, 0x30101004, 0x20111004, 0x30111004, \r
+ },\r
+ {\r
+ /* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */\r
+ 0x00000000, 0x08000000, 0x00000008, 0x08000008, \r
+ 0x00000400, 0x08000400, 0x00000408, 0x08000408, \r
+ 0x00020000, 0x08020000, 0x00020008, 0x08020008, \r
+ 0x00020400, 0x08020400, 0x00020408, 0x08020408, \r
+ 0x00000001, 0x08000001, 0x00000009, 0x08000009, \r
+ 0x00000401, 0x08000401, 0x00000409, 0x08000409, \r
+ 0x00020001, 0x08020001, 0x00020009, 0x08020009, \r
+ 0x00020401, 0x08020401, 0x00020409, 0x08020409, \r
+ 0x02000000, 0x0A000000, 0x02000008, 0x0A000008, \r
+ 0x02000400, 0x0A000400, 0x02000408, 0x0A000408, \r
+ 0x02020000, 0x0A020000, 0x02020008, 0x0A020008, \r
+ 0x02020400, 0x0A020400, 0x02020408, 0x0A020408, \r
+ 0x02000001, 0x0A000001, 0x02000009, 0x0A000009, \r
+ 0x02000401, 0x0A000401, 0x02000409, 0x0A000409, \r
+ 0x02020001, 0x0A020001, 0x02020009, 0x0A020009, \r
+ 0x02020401, 0x0A020401, 0x02020409, 0x0A020409, \r
+ },\r
+ {\r
+ /* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */\r
+ 0x00000000, 0x00000100, 0x00080000, 0x00080100, \r
+ 0x01000000, 0x01000100, 0x01080000, 0x01080100, \r
+ 0x00000010, 0x00000110, 0x00080010, 0x00080110, \r
+ 0x01000010, 0x01000110, 0x01080010, 0x01080110, \r
+ 0x00200000, 0x00200100, 0x00280000, 0x00280100, \r
+ 0x01200000, 0x01200100, 0x01280000, 0x01280100, \r
+ 0x00200010, 0x00200110, 0x00280010, 0x00280110, \r
+ 0x01200010, 0x01200110, 0x01280010, 0x01280110, \r
+ 0x00000200, 0x00000300, 0x00080200, 0x00080300, \r
+ 0x01000200, 0x01000300, 0x01080200, 0x01080300, \r
+ 0x00000210, 0x00000310, 0x00080210, 0x00080310, \r
+ 0x01000210, 0x01000310, 0x01080210, 0x01080310, \r
+ 0x00200200, 0x00200300, 0x00280200, 0x00280300, \r
+ 0x01200200, 0x01200300, 0x01280200, 0x01280300, \r
+ 0x00200210, 0x00200310, 0x00280210, 0x00280310, \r
+ 0x01200210, 0x01200310, 0x01280210, 0x01280310, \r
+ },\r
+ {\r
+ /* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */\r
+ 0x00000000, 0x04000000, 0x00040000, 0x04040000, \r
+ 0x00000002, 0x04000002, 0x00040002, 0x04040002, \r
+ 0x00002000, 0x04002000, 0x00042000, 0x04042000, \r
+ 0x00002002, 0x04002002, 0x00042002, 0x04042002, \r
+ 0x00000020, 0x04000020, 0x00040020, 0x04040020, \r
+ 0x00000022, 0x04000022, 0x00040022, 0x04040022, \r
+ 0x00002020, 0x04002020, 0x00042020, 0x04042020, \r
+ 0x00002022, 0x04002022, 0x00042022, 0x04042022, \r
+ 0x00000800, 0x04000800, 0x00040800, 0x04040800, \r
+ 0x00000802, 0x04000802, 0x00040802, 0x04040802, \r
+ 0x00002800, 0x04002800, 0x00042800, 0x04042800, \r
+ 0x00002802, 0x04002802, 0x00042802, 0x04042802, \r
+ 0x00000820, 0x04000820, 0x00040820, 0x04040820, \r
+ 0x00000822, 0x04000822, 0x00040822, 0x04040822, \r
+ 0x00002820, 0x04002820, 0x00042820, 0x04042820, \r
+ 0x00002822, 0x04002822, 0x00042822, 0x04042822, \r
+ }\r
+ };\r
+ \r
+ private static final int SPtrans[][] = {\r
+ {\r
+ /* nibble 0 */\r
+ 0x00820200, 0x00020000, 0x80800000, 0x80820200,\r
+ 0x00800000, 0x80020200, 0x80020000, 0x80800000,\r
+ 0x80020200, 0x00820200, 0x00820000, 0x80000200,\r
+ 0x80800200, 0x00800000, 0x00000000, 0x80020000,\r
+ 0x00020000, 0x80000000, 0x00800200, 0x00020200,\r
+ 0x80820200, 0x00820000, 0x80000200, 0x00800200,\r
+ 0x80000000, 0x00000200, 0x00020200, 0x80820000,\r
+ 0x00000200, 0x80800200, 0x80820000, 0x00000000,\r
+ 0x00000000, 0x80820200, 0x00800200, 0x80020000,\r
+ 0x00820200, 0x00020000, 0x80000200, 0x00800200,\r
+ 0x80820000, 0x00000200, 0x00020200, 0x80800000,\r
+ 0x80020200, 0x80000000, 0x80800000, 0x00820000,\r
+ 0x80820200, 0x00020200, 0x00820000, 0x80800200,\r
+ 0x00800000, 0x80000200, 0x80020000, 0x00000000,\r
+ 0x00020000, 0x00800000, 0x80800200, 0x00820200,\r
+ 0x80000000, 0x80820000, 0x00000200, 0x80020200,\r
+ },\r
+ {\r
+ /* nibble 1 */\r
+ 0x10042004, 0x00000000, 0x00042000, 0x10040000,\r
+ 0x10000004, 0x00002004, 0x10002000, 0x00042000,\r
+ 0x00002000, 0x10040004, 0x00000004, 0x10002000,\r
+ 0x00040004, 0x10042000, 0x10040000, 0x00000004,\r
+ 0x00040000, 0x10002004, 0x10040004, 0x00002000,\r
+ 0x00042004, 0x10000000, 0x00000000, 0x00040004,\r
+ 0x10002004, 0x00042004, 0x10042000, 0x10000004,\r
+ 0x10000000, 0x00040000, 0x00002004, 0x10042004,\r
+ 0x00040004, 0x10042000, 0x10002000, 0x00042004,\r
+ 0x10042004, 0x00040004, 0x10000004, 0x00000000,\r
+ 0x10000000, 0x00002004, 0x00040000, 0x10040004,\r
+ 0x00002000, 0x10000000, 0x00042004, 0x10002004,\r
+ 0x10042000, 0x00002000, 0x00000000, 0x10000004,\r
+ 0x00000004, 0x10042004, 0x00042000, 0x10040000,\r
+ 0x10040004, 0x00040000, 0x00002004, 0x10002000,\r
+ 0x10002004, 0x00000004, 0x10040000, 0x00042000,\r
+ },\r
+ {\r
+ /* nibble 2 */\r
+ 0x41000000, 0x01010040, 0x00000040, 0x41000040,\r
+ 0x40010000, 0x01000000, 0x41000040, 0x00010040,\r
+ 0x01000040, 0x00010000, 0x01010000, 0x40000000,\r
+ 0x41010040, 0x40000040, 0x40000000, 0x41010000,\r
+ 0x00000000, 0x40010000, 0x01010040, 0x00000040,\r
+ 0x40000040, 0x41010040, 0x00010000, 0x41000000,\r
+ 0x41010000, 0x01000040, 0x40010040, 0x01010000,\r
+ 0x00010040, 0x00000000, 0x01000000, 0x40010040,\r
+ 0x01010040, 0x00000040, 0x40000000, 0x00010000,\r
+ 0x40000040, 0x40010000, 0x01010000, 0x41000040,\r
+ 0x00000000, 0x01010040, 0x00010040, 0x41010000,\r
+ 0x40010000, 0x01000000, 0x41010040, 0x40000000,\r
+ 0x40010040, 0x41000000, 0x01000000, 0x41010040,\r
+ 0x00010000, 0x01000040, 0x41000040, 0x00010040,\r
+ 0x01000040, 0x00000000, 0x41010000, 0x40000040,\r
+ 0x41000000, 0x40010040, 0x00000040, 0x01010000,\r
+ },\r
+ {\r
+ /* nibble 3 */\r
+ 0x00100402, 0x04000400, 0x00000002, 0x04100402,\r
+ 0x00000000, 0x04100000, 0x04000402, 0x00100002,\r
+ 0x04100400, 0x04000002, 0x04000000, 0x00000402,\r
+ 0x04000002, 0x00100402, 0x00100000, 0x04000000,\r
+ 0x04100002, 0x00100400, 0x00000400, 0x00000002,\r
+ 0x00100400, 0x04000402, 0x04100000, 0x00000400,\r
+ 0x00000402, 0x00000000, 0x00100002, 0x04100400,\r
+ 0x04000400, 0x04100002, 0x04100402, 0x00100000,\r
+ 0x04100002, 0x00000402, 0x00100000, 0x04000002,\r
+ 0x00100400, 0x04000400, 0x00000002, 0x04100000,\r
+ 0x04000402, 0x00000000, 0x00000400, 0x00100002,\r
+ 0x00000000, 0x04100002, 0x04100400, 0x00000400,\r
+ 0x04000000, 0x04100402, 0x00100402, 0x00100000,\r
+ 0x04100402, 0x00000002, 0x04000400, 0x00100402,\r
+ 0x00100002, 0x00100400, 0x04100000, 0x04000402,\r
+ 0x00000402, 0x04000000, 0x04000002, 0x04100400,\r
+ },\r
+ {\r
+ /* nibble 4 */\r
+ 0x02000000, 0x00004000, 0x00000100, 0x02004108,\r
+ 0x02004008, 0x02000100, 0x00004108, 0x02004000,\r
+ 0x00004000, 0x00000008, 0x02000008, 0x00004100,\r
+ 0x02000108, 0x02004008, 0x02004100, 0x00000000,\r
+ 0x00004100, 0x02000000, 0x00004008, 0x00000108,\r
+ 0x02000100, 0x00004108, 0x00000000, 0x02000008,\r
+ 0x00000008, 0x02000108, 0x02004108, 0x00004008,\r
+ 0x02004000, 0x00000100, 0x00000108, 0x02004100,\r
+ 0x02004100, 0x02000108, 0x00004008, 0x02004000,\r
+ 0x00004000, 0x00000008, 0x02000008, 0x02000100,\r
+ 0x02000000, 0x00004100, 0x02004108, 0x00000000,\r
+ 0x00004108, 0x02000000, 0x00000100, 0x00004008,\r
+ 0x02000108, 0x00000100, 0x00000000, 0x02004108,\r
+ 0x02004008, 0x02004100, 0x00000108, 0x00004000,\r
+ 0x00004100, 0x02004008, 0x02000100, 0x00000108,\r
+ 0x00000008, 0x00004108, 0x02004000, 0x02000008,\r
+ },\r
+ {\r
+ /* nibble 5 */\r
+ 0x20000010, 0x00080010, 0x00000000, 0x20080800,\r
+ 0x00080010, 0x00000800, 0x20000810, 0x00080000,\r
+ 0x00000810, 0x20080810, 0x00080800, 0x20000000,\r
+ 0x20000800, 0x20000010, 0x20080000, 0x00080810,\r
+ 0x00080000, 0x20000810, 0x20080010, 0x00000000,\r
+ 0x00000800, 0x00000010, 0x20080800, 0x20080010,\r
+ 0x20080810, 0x20080000, 0x20000000, 0x00000810,\r
+ 0x00000010, 0x00080800, 0x00080810, 0x20000800,\r
+ 0x00000810, 0x20000000, 0x20000800, 0x00080810,\r
+ 0x20080800, 0x00080010, 0x00000000, 0x20000800,\r
+ 0x20000000, 0x00000800, 0x20080010, 0x00080000,\r
+ 0x00080010, 0x20080810, 0x00080800, 0x00000010,\r
+ 0x20080810, 0x00080800, 0x00080000, 0x20000810,\r
+ 0x20000010, 0x20080000, 0x00080810, 0x00000000,\r
+ 0x00000800, 0x20000010, 0x20000810, 0x20080800,\r
+ 0x20080000, 0x00000810, 0x00000010, 0x20080010,\r
+ },\r
+ {\r
+ /* nibble 6 */\r
+ 0x00001000, 0x00000080, 0x00400080, 0x00400001,\r
+ 0x00401081, 0x00001001, 0x00001080, 0x00000000,\r
+ 0x00400000, 0x00400081, 0x00000081, 0x00401000,\r
+ 0x00000001, 0x00401080, 0x00401000, 0x00000081,\r
+ 0x00400081, 0x00001000, 0x00001001, 0x00401081,\r
+ 0x00000000, 0x00400080, 0x00400001, 0x00001080,\r
+ 0x00401001, 0x00001081, 0x00401080, 0x00000001,\r
+ 0x00001081, 0x00401001, 0x00000080, 0x00400000,\r
+ 0x00001081, 0x00401000, 0x00401001, 0x00000081,\r
+ 0x00001000, 0x00000080, 0x00400000, 0x00401001,\r
+ 0x00400081, 0x00001081, 0x00001080, 0x00000000,\r
+ 0x00000080, 0x00400001, 0x00000001, 0x00400080,\r
+ 0x00000000, 0x00400081, 0x00400080, 0x00001080,\r
+ 0x00000081, 0x00001000, 0x00401081, 0x00400000,\r
+ 0x00401080, 0x00000001, 0x00001001, 0x00401081,\r
+ 0x00400001, 0x00401080, 0x00401000, 0x00001001,\r
+ },\r
+ {\r
+ /* nibble 7 */\r
+ 0x08200020, 0x08208000, 0x00008020, 0x00000000,\r
+ 0x08008000, 0x00200020, 0x08200000, 0x08208020,\r
+ 0x00000020, 0x08000000, 0x00208000, 0x00008020,\r
+ 0x00208020, 0x08008020, 0x08000020, 0x08200000,\r
+ 0x00008000, 0x00208020, 0x00200020, 0x08008000,\r
+ 0x08208020, 0x08000020, 0x00000000, 0x00208000,\r
+ 0x08000000, 0x00200000, 0x08008020, 0x08200020,\r
+ 0x00200000, 0x00008000, 0x08208000, 0x00000020,\r
+ 0x00200000, 0x00008000, 0x08000020, 0x08208020,\r
+ 0x00008020, 0x08000000, 0x00000000, 0x00208000,\r
+ 0x08200020, 0x08008020, 0x08008000, 0x00200020,\r
+ 0x08208000, 0x00000020, 0x00200020, 0x08008000,\r
+ 0x08208020, 0x00200000, 0x08200000, 0x08000020,\r
+ 0x00208000, 0x00008020, 0x08008020, 0x08200000,\r
+ 0x00000020, 0x08208000, 0x00208020, 0x00000000,\r
+ 0x08000000, 0x08200020, 0x00008000, 0x00208020\r
+ }\r
+ };\r
+ \r
+ private static final int byteToUnsigned(byte b) {\r
+ int value = (int) b;\r
+ return (value >= 0) ? value : value + 256;\r
+ }\r
+\r
+ private static int fourBytesToInt(byte b[], int offset) {\r
+ return byteToUnsigned(b[offset++]) \r
+ | (byteToUnsigned(b[offset++]) << 8) \r
+ | (byteToUnsigned(b[offset++]) << 16) \r
+ | (byteToUnsigned(b[offset]) << 24);\r
+ }\r
+\r
+ private static final void intToFourBytes(int iValue, byte b[], int offset) {\r
+ b[offset++] = (byte)((iValue) & 0xff);\r
+ b[offset++] = (byte)((iValue >>> 8 ) & 0xff);\r
+ b[offset++] = (byte)((iValue >>> 16) & 0xff);\r
+ b[offset] = (byte)((iValue >>> 24) & 0xff);\r
+ }\r
+ \r
+ private static final void PERM_OP(int a, int b, int n, int m, int results[]) {\r
+ int t;\r
+\r
+ t = ((a >>> n) ^ b) & m;\r
+ a ^= t << n;\r
+ b ^= t;\r
+\r
+ results[0] = a;\r
+ results[1] = b;\r
+ }\r
+\r
+ private static final int HPERM_OP(int a, int n, int m) {\r
+ int t;\r
+ \r
+ t = ((a << (16 - n)) ^ a) & m;\r
+ a = a ^ t ^ (t >>> (16 - n));\r
+ \r
+ return a;\r
+ }\r
+\r
+ private static int [] des_set_key(byte key[]) {\r
+ int schedule[] = new int [ITERATIONS * 2];\r
+ \r
+ int c = fourBytesToInt(key, 0);\r
+ int d = fourBytesToInt(key, 4);\r
+ \r
+ int results[] = new int[2];\r
+\r
+ PERM_OP(d, c, 4, 0x0f0f0f0f, results);\r
+ d = results[0]; c = results[1];\r
+ \r
+ c = HPERM_OP(c, -2, 0xcccc0000);\r
+ d = HPERM_OP(d, -2, 0xcccc0000);\r
+ \r
+ PERM_OP(d, c, 1, 0x55555555, results);\r
+ d = results[0]; c = results[1];\r
+ \r
+ PERM_OP(c, d, 8, 0x00ff00ff, results);\r
+ c = results[0]; d = results[1];\r
+ \r
+ PERM_OP(d, c, 1, 0x55555555, results);\r
+ d = results[0]; c = results[1];\r
+ \r
+ d = (((d & 0x000000ff) << 16) | (d & 0x0000ff00) |\r
+ ((d & 0x00ff0000) >>> 16) | ((c & 0xf0000000) >>> 4));\r
+ c &= 0x0fffffff;\r
+ \r
+ int s, t;\r
+ int j = 0;\r
+ \r
+ for(int i = 0; i < ITERATIONS; i ++) {\r
+ if(shifts2[i]) {\r
+ c = (c >>> 2) | (c << 26);\r
+ d = (d >>> 2) | (d << 26);\r
+ } else {\r
+ c = (c >>> 1) | (c << 27);\r
+ d = (d >>> 1) | (d << 27);\r
+ }\r
+ \r
+ c &= 0x0fffffff;\r
+ d &= 0x0fffffff;\r
+ \r
+ s = skb[0][ (c ) & 0x3f ]|\r
+ skb[1][((c >>> 6) & 0x03) | ((c >>> 7) & 0x3c)]|\r
+ skb[2][((c >>> 13) & 0x0f) | ((c >>> 14) & 0x30)]|\r
+ skb[3][((c >>> 20) & 0x01) | ((c >>> 21) & 0x06) |\r
+ ((c >>> 22) & 0x38)];\r
+\r
+ t = skb[4][ (d ) & 0x3f ]|\r
+ skb[5][((d >>> 7) & 0x03) | ((d >>> 8) & 0x3c)]|\r
+ skb[6][ (d >>>15) & 0x3f ]|\r
+ skb[7][((d >>>21) & 0x0f) | ((d >>> 22) & 0x30)];\r
+ \r
+ schedule[j++] = ((t << 16) | (s & 0x0000ffff)) & 0xffffffff;\r
+ s = ((s >>> 16) | (t & 0xffff0000));\r
+ \r
+ s = (s << 4) | (s >>> 28);\r
+ schedule[j++] = s & 0xffffffff;\r
+ }\r
+ return schedule;\r
+ }\r
+\r
+ private static final int D_ENUnixCrypt(int L, int R, int S, int E0, int E1, int s[]) {\r
+ int t, u, v;\r
+ \r
+ v = R ^ (R >>> 16);\r
+ u = v & E0;\r
+ v = v & E1;\r
+ u = (u ^ (u << 16)) ^ R ^ s[S];\r
+ t = (v ^ (v << 16)) ^ R ^ s[S + 1];\r
+ t = (t >>> 4) | (t << 28);\r
+ \r
+ L ^= SPtrans[1][(t ) & 0x3f] |\r
+ SPtrans[3][(t >>> 8) & 0x3f] |\r
+ SPtrans[5][(t >>> 16) & 0x3f] |\r
+ SPtrans[7][(t >>> 24) & 0x3f] |\r
+ SPtrans[0][(u ) & 0x3f] |\r
+ SPtrans[2][(u >>> 8) & 0x3f] |\r
+ SPtrans[4][(u >>> 16) & 0x3f] |\r
+ SPtrans[6][(u >>> 24) & 0x3f];\r
+\r
+ return L;\r
+ }\r
+ \r
+ private static final int [] body(int schedule[], int Eswap0, int Eswap1) \r
+ {\r
+ int left = 0;\r
+ int right = 0;\r
+ int t = 0;\r
+\r
+ for (int j = 0; j < 25; j ++) {\r
+ for (int i = 0; i < ITERATIONS * 2; i += 4) {\r
+ left = D_ENUnixCrypt(left, right, i, Eswap0, Eswap1, schedule);\r
+ right = D_ENUnixCrypt(right, left, i + 2, Eswap0, Eswap1, schedule);\r
+ }\r
+ t = left; \r
+ left = right; \r
+ right = t;\r
+ }\r
+ \r
+ t = right;\r
+\r
+ right = (left >>> 1) | (left << 31);\r
+ left = (t >>> 1) | (t << 31);\r
+ \r
+ left &= 0xffffffff;\r
+ right &= 0xffffffff;\r
+\r
+ int results[] = new int[2];\r
+\r
+ PERM_OP(right, left, 1, 0x55555555, results); \r
+ right = results[0]; left = results[1];\r
+ \r
+ PERM_OP(left, right, 8, 0x00ff00ff, results); \r
+ left = results[0]; right = results[1];\r
+\r
+ PERM_OP(right, left, 2, 0x33333333, results); \r
+ right = results[0]; left = results[1];\r
+ \r
+ PERM_OP(left, right, 16, 0x0000ffff, results);\r
+ left = results[0]; right = results[1];\r
+ \r
+ PERM_OP(right, left, 4, 0x0f0f0f0f, results);\r
+ right = results[0]; left = results[1];\r
+ \r
+ int out[] = new int[2];\r
+ \r
+ out[0] = left; \r
+ out[1] = right;\r
+ \r
+ return out;\r
+ }\r
+\r
+ public static final String alphabet = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";\r
+\r
+ public static final String encrypt(String salt, String original) \r
+ {\r
+ // wwb -- Should do some sanity checks: salt needs to be 2 chars, in alpha.\r
+ while(salt.length() < 2)\r
+ salt += "A";\r
+\r
+ char[] buffer = new char [13];\r
+\r
+ char charZero = salt.charAt(0);\r
+ char charOne = salt.charAt(1);\r
+ \r
+ buffer[0] = charZero;\r
+ buffer[1] = charOne;\r
+\r
+ int Eswap0 = alphabet.indexOf(charZero);\r
+ int Eswap1 = alphabet.indexOf(charOne) << 4;\r
+ byte key[] = new byte[8];\r
+ \r
+ for(int i = 0; i < key.length; i ++)\r
+ key[i] = (byte)0;\r
+ \r
+ for(int i = 0; i < key.length && i < original.length(); i ++)\r
+ key[i] = (byte) (((int) original.charAt(i)) << 1);\r
+\r
+ int schedule[] = des_set_key(key);\r
+ int out[] = body(schedule, Eswap0, Eswap1);\r
+ \r
+ byte b[] = new byte[9];\r
+ \r
+ intToFourBytes(out[0], b, 0);\r
+ intToFourBytes(out[1], b, 4);\r
+ b[8] = 0;\r
+\r
+ for(int i = 2, y = 0, u = 0x80; i < 13; i ++) {\r
+ for(int j = 0, c = 0; j < 6; j ++) {\r
+ c <<= 1;\r
+\r
+ if(((int)b[y] & u) != 0)\r
+ c |= 1;\r
+\r
+ u >>>= 1;\r
+ \r
+ if (u == 0) {\r
+ y++;\r
+ u = 0x80;\r
+ }\r
+ buffer[i] = alphabet.charAt(c);\r
+ }\r
+ }\r
+ return new String(buffer);\r
+ }\r
+ \r
+ public static void main(String [] args)\r
+ {\r
+ if ( (1 == args.length) && ("list".equalsIgnoreCase(args[0])) )\r
+ {\r
+ StringBuffer listChars = new StringBuffer(alphabet);\r
+ final String password = "italianroast";\r
+ int salt = 1;\r
+ ArrayList<String []> pws = new ArrayList<String []>();\r
+ while( listChars.length() > 0 )\r
+ {\r
+ int startLen = listChars.length();\r
+ String pw = UnixCrypt.encrypt(Integer.toString(salt), password);\r
+ for( int i = 0; i < pw.length(); ++i )\r
+ {\r
+ int pos = listChars.indexOf(pw.substring(i, i+1));\r
+ if( pos >= 0 )\r
+ listChars.deleteCharAt(pos); \r
+ }\r
+ if( listChars.length() == startLen )\r
+ ++salt;\r
+ else\r
+ pws.add(new String [] { password, pw });\r
+ }\r
+ for( String [] pw : pws )\r
+ System.out.println(pw[0] + " : " + pw[1]);\r
+ }\r
+ else if ( 2 == args.length )\r
+ {\r
+ System.out.println(UnixCrypt.encrypt(args[0], args[1]));\r
+ }\r
+ else\r
+ {\r
+ System.out.println("usage: UnixCrypt <salt> <password>");\r
+ System.out.println("or: \"UnixCrypt list\" to generate a list of password with all possible characters.");\r
+ }\r
+ }\r
+ \r
+}\r