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1 package com.sslexplorer.unixauth;
2
11
12 public class DESCrypt {
13 private DESCrypt() {
14 }
15
16 private static final int ITERATIONS = 16;
17
18 private static final int con_salt[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
19 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
20 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
21 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E,
22 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,
23 0x21, 0x22, 0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C,
24 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0x3E,
25 0x3F, 0x00, 0x00, 0x00, 0x00, 0x00, };
26
27 private static final boolean shifts2[] = { false, false, true, true, true, true, true, true, false, true, true, true, true,
28 true, true, false };
29
30 private static final int skb[][] = {
31 {
32
33 0x00000000, 0x00000010, 0x20000000, 0x20000010, 0x00010000, 0x00010010, 0x20010000, 0x20010010, 0x00000800,
34 0x00000810, 0x20000800, 0x20000810, 0x00010800, 0x00010810, 0x20010800, 0x20010810, 0x00000020,
35 0x00000030, 0x20000020, 0x20000030, 0x00010020, 0x00010030, 0x20010020, 0x20010030, 0x00000820,
36 0x00000830, 0x20000820, 0x20000830, 0x00010820, 0x00010830, 0x20010820, 0x20010830, 0x00080000,
37 0x00080010, 0x20080000, 0x20080010, 0x00090000, 0x00090010, 0x20090000, 0x20090010, 0x00080800,
38 0x00080810, 0x20080800, 0x20080810, 0x00090800, 0x00090810, 0x20090800, 0x20090810, 0x00080020,
39 0x00080030, 0x20080020, 0x20080030, 0x00090020, 0x00090030, 0x20090020, 0x20090030, 0x00080820,
40 0x00080830, 0x20080820, 0x20080830, 0x00090820, 0x00090830, 0x20090820, 0x20090830, },
41 {
42
43 0x00000000, 0x02000000, 0x00002000, 0x02002000, 0x00200000, 0x02200000, 0x00202000, 0x02202000, 0x00000004,
44 0x02000004, 0x00002004, 0x02002004, 0x00200004, 0x02200004, 0x00202004, 0x02202004, 0x00000400,
45 0x02000400, 0x00002400, 0x02002400, 0x00200400, 0x02200400, 0x00202400, 0x02202400, 0x00000404,
46 0x02000404, 0x00002404, 0x02002404, 0x00200404, 0x02200404, 0x00202404, 0x02202404, 0x10000000,
47 0x12000000, 0x10002000, 0x12002000, 0x10200000, 0x12200000, 0x10202000, 0x12202000, 0x10000004,
48 0x12000004, 0x10002004, 0x12002004, 0x10200004, 0x12200004, 0x10202004, 0x12202004, 0x10000400,
49 0x12000400, 0x10002400, 0x12002400, 0x10200400, 0x12200400, 0x10202400, 0x12202400, 0x10000404,
50 0x12000404, 0x10002404, 0x12002404, 0x10200404, 0x12200404, 0x10202404, 0x12202404, },
51 {
52
53 0x00000000, 0x00000001, 0x00040000, 0x00040001, 0x01000000, 0x01000001, 0x01040000, 0x01040001, 0x00000002,
54 0x00000003, 0x00040002, 0x00040003, 0x01000002, 0x01000003, 0x01040002, 0x01040003, 0x00000200,
55 0x00000201, 0x00040200, 0x00040201, 0x01000200, 0x01000201, 0x01040200, 0x01040201, 0x00000202,
56 0x00000203, 0x00040202, 0x00040203, 0x01000202, 0x01000203, 0x01040202, 0x01040203, 0x08000000,
57 0x08000001, 0x08040000, 0x08040001, 0x09000000, 0x09000001, 0x09040000, 0x09040001, 0x08000002,
58 0x08000003, 0x08040002, 0x08040003, 0x09000002, 0x09000003, 0x09040002, 0x09040003, 0x08000200,
59 0x08000201, 0x08040200, 0x08040201, 0x09000200, 0x09000201, 0x09040200, 0x09040201, 0x08000202,
60 0x08000203, 0x08040202, 0x08040203, 0x09000202, 0x09000203, 0x09040202, 0x09040203, },
61 {
62
63 0x00000000, 0x00100000, 0x00000100, 0x00100100, 0x00000008, 0x00100008, 0x00000108, 0x00100108, 0x00001000,
64 0x00101000, 0x00001100, 0x00101100, 0x00001008, 0x00101008, 0x00001108, 0x00101108, 0x04000000,
65 0x04100000, 0x04000100, 0x04100100, 0x04000008, 0x04100008, 0x04000108, 0x04100108, 0x04001000,
66 0x04101000, 0x04001100, 0x04101100, 0x04001008, 0x04101008, 0x04001108, 0x04101108, 0x00020000,
67 0x00120000, 0x00020100, 0x00120100, 0x00020008, 0x00120008, 0x00020108, 0x00120108, 0x00021000,
68 0x00121000, 0x00021100, 0x00121100, 0x00021008, 0x00121008, 0x00021108, 0x00121108, 0x04020000,
69 0x04120000, 0x04020100, 0x04120100, 0x04020008, 0x04120008, 0x04020108, 0x04120108, 0x04021000,
70 0x04121000, 0x04021100, 0x04121100, 0x04021008, 0x04121008, 0x04021108, 0x04121108, },
71 {
72
73 0x00000000, 0x10000000, 0x00010000, 0x10010000, 0x00000004, 0x10000004, 0x00010004, 0x10010004, 0x20000000,
74 0x30000000, 0x20010000, 0x30010000, 0x20000004, 0x30000004, 0x20010004, 0x30010004, 0x00100000,
75 0x10100000, 0x00110000, 0x10110000, 0x00100004, 0x10100004, 0x00110004, 0x10110004, 0x20100000,
76 0x30100000, 0x20110000, 0x30110000, 0x20100004, 0x30100004, 0x20110004, 0x30110004, 0x00001000,
77 0x10001000, 0x00011000, 0x10011000, 0x00001004, 0x10001004, 0x00011004, 0x10011004, 0x20001000,
78 0x30001000, 0x20011000, 0x30011000, 0x20001004, 0x30001004, 0x20011004, 0x30011004, 0x00101000,
79 0x10101000, 0x00111000, 0x10111000, 0x00101004, 0x10101004, 0x00111004, 0x10111004, 0x20101000,
80 0x30101000, 0x20111000, 0x30111000, 0x20101004, 0x30101004, 0x20111004, 0x30111004, },
81 {
82
83 0x00000000, 0x08000000, 0x00000008, 0x08000008, 0x00000400, 0x08000400, 0x00000408, 0x08000408, 0x00020000,
84 0x08020000, 0x00020008, 0x08020008, 0x00020400, 0x08020400, 0x00020408, 0x08020408, 0x00000001,
85 0x08000001, 0x00000009, 0x08000009, 0x00000401, 0x08000401, 0x00000409, 0x08000409, 0x00020001,
86 0x08020001, 0x00020009, 0x08020009, 0x00020401, 0x08020401, 0x00020409, 0x08020409, 0x02000000,
87 0x0A000000, 0x02000008, 0x0A000008, 0x02000400, 0x0A000400, 0x02000408, 0x0A000408, 0x02020000,
88 0x0A020000, 0x02020008, 0x0A020008, 0x02020400, 0x0A020400, 0x02020408, 0x0A020408, 0x02000001,
89 0x0A000001, 0x02000009, 0x0A000009, 0x02000401, 0x0A000401, 0x02000409, 0x0A000409, 0x02020001,
90 0x0A020001, 0x02020009, 0x0A020009, 0x02020401, 0x0A020401, 0x02020409, 0x0A020409, },
91 {
92
93 0x00000000, 0x00000100, 0x00080000, 0x00080100, 0x01000000, 0x01000100, 0x01080000, 0x01080100, 0x00000010,
94 0x00000110, 0x00080010, 0x00080110, 0x01000010, 0x01000110, 0x01080010, 0x01080110, 0x00200000,
95 0x00200100, 0x00280000, 0x00280100, 0x01200000, 0x01200100, 0x01280000, 0x01280100, 0x00200010,
96 0x00200110, 0x00280010, 0x00280110, 0x01200010, 0x01200110, 0x01280010, 0x01280110, 0x00000200,
97 0x00000300, 0x00080200, 0x00080300, 0x01000200, 0x01000300, 0x01080200, 0x01080300, 0x00000210,
98 0x00000310, 0x00080210, 0x00080310, 0x01000210, 0x01000310, 0x01080210, 0x01080310, 0x00200200,
99 0x00200300, 0x00280200, 0x00280300, 0x01200200, 0x01200300, 0x01280200, 0x01280300, 0x00200210,
100 0x00200310, 0x00280210, 0x00280310, 0x01200210, 0x01200310, 0x01280210, 0x01280310, },
101 {
102
103 0x00000000, 0x04000000, 0x00040000, 0x04040000, 0x00000002, 0x04000002, 0x00040002, 0x04040002, 0x00002000,
104 0x04002000, 0x00042000, 0x04042000, 0x00002002, 0x04002002, 0x00042002, 0x04042002, 0x00000020,
105 0x04000020, 0x00040020, 0x04040020, 0x00000022, 0x04000022, 0x00040022, 0x04040022, 0x00002020,
106 0x04002020, 0x00042020, 0x04042020, 0x00002022, 0x04002022, 0x00042022, 0x04042022, 0x00000800,
107 0x04000800, 0x00040800, 0x04040800, 0x00000802, 0x04000802, 0x00040802, 0x04040802, 0x00002800,
108 0x04002800, 0x00042800, 0x04042800, 0x00002802, 0x04002802, 0x00042802, 0x04042802, 0x00000820,
109 0x04000820, 0x00040820, 0x04040820, 0x00000822, 0x04000822, 0x00040822, 0x04040822, 0x00002820,
110 0x04002820, 0x00042820, 0x04042820, 0x00002822, 0x04002822, 0x00042822, 0x04042822, }, };
111
112 private static final int SPtrans[][] = {
113 {
114
115 0x00820200, 0x00020000, 0x80800000, 0x80820200, 0x00800000, 0x80020200, 0x80020000, 0x80800000, 0x80020200,
116 0x00820200, 0x00820000, 0x80000200, 0x80800200, 0x00800000, 0x00000000, 0x80020000, 0x00020000,
117 0x80000000, 0x00800200, 0x00020200, 0x80820200, 0x00820000, 0x80000200, 0x00800200, 0x80000000,
118 0x00000200, 0x00020200, 0x80820000, 0x00000200, 0x80800200, 0x80820000, 0x00000000, 0x00000000,
119 0x80820200, 0x00800200, 0x80020000, 0x00820200, 0x00020000, 0x80000200, 0x00800200, 0x80820000,
120 0x00000200, 0x00020200, 0x80800000, 0x80020200, 0x80000000, 0x80800000, 0x00820000, 0x80820200,
121 0x00020200, 0x00820000, 0x80800200, 0x00800000, 0x80000200, 0x80020000, 0x00000000, 0x00020000,
122 0x00800000, 0x80800200, 0x00820200, 0x80000000, 0x80820000, 0x00000200, 0x80020200, },
123 {
124
125 0x10042004, 0x00000000, 0x00042000, 0x10040000, 0x10000004, 0x00002004, 0x10002000, 0x00042000, 0x00002000,
126 0x10040004, 0x00000004, 0x10002000, 0x00040004, 0x10042000, 0x10040000, 0x00000004, 0x00040000,
127 0x10002004, 0x10040004, 0x00002000, 0x00042004, 0x10000000, 0x00000000, 0x00040004, 0x10002004,
128 0x00042004, 0x10042000, 0x10000004, 0x10000000, 0x00040000, 0x00002004, 0x10042004, 0x00040004,
129 0x10042000, 0x10002000, 0x00042004, 0x10042004, 0x00040004, 0x10000004, 0x00000000, 0x10000000,
130 0x00002004, 0x00040000, 0x10040004, 0x00002000, 0x10000000, 0x00042004, 0x10002004, 0x10042000,
131 0x00002000, 0x00000000, 0x10000004, 0x00000004, 0x10042004, 0x00042000, 0x10040000, 0x10040004,
132 0x00040000, 0x00002004, 0x10002000, 0x10002004, 0x00000004, 0x10040000, 0x00042000, },
133 {
134
135 0x41000000, 0x01010040, 0x00000040, 0x41000040, 0x40010000, 0x01000000, 0x41000040, 0x00010040, 0x01000040,
136 0x00010000, 0x01010000, 0x40000000, 0x41010040, 0x40000040, 0x40000000, 0x41010000, 0x00000000,
137 0x40010000, 0x01010040, 0x00000040, 0x40000040, 0x41010040, 0x00010000, 0x41000000, 0x41010000,
138 0x01000040, 0x40010040, 0x01010000, 0x00010040, 0x00000000, 0x01000000, 0x40010040, 0x01010040,
139 0x00000040, 0x40000000, 0x00010000, 0x40000040, 0x40010000, 0x01010000, 0x41000040, 0x00000000,
140 0x01010040, 0x00010040, 0x41010000, 0x40010000, 0x01000000, 0x41010040, 0x40000000, 0x40010040,
141 0x41000000, 0x01000000, 0x41010040, 0x00010000, 0x01000040, 0x41000040, 0x00010040, 0x01000040,
142 0x00000000, 0x41010000, 0x40000040, 0x41000000, 0x40010040, 0x00000040, 0x01010000, },
143 {
144
145 0x00100402, 0x04000400, 0x00000002, 0x04100402, 0x00000000, 0x04100000, 0x04000402, 0x00100002, 0x04100400,
146 0x04000002, 0x04000000, 0x00000402, 0x04000002, 0x00100402, 0x00100000, 0x04000000, 0x04100002,
147 0x00100400, 0x00000400, 0x00000002, 0x00100400, 0x04000402, 0x04100000, 0x00000400, 0x00000402,
148 0x00000000, 0x00100002, 0x04100400, 0x04000400, 0x04100002, 0x04100402, 0x00100000, 0x04100002,
149 0x00000402, 0x00100000, 0x04000002, 0x00100400, 0x04000400, 0x00000002, 0x04100000, 0x04000402,
150 0x00000000, 0x00000400, 0x00100002, 0x00000000, 0x04100002, 0x04100400, 0x00000400, 0x04000000,
151 0x04100402, 0x00100402, 0x00100000, 0x04100402, 0x00000002, 0x04000400, 0x00100402, 0x00100002,
152 0x00100400, 0x04100000, 0x04000402, 0x00000402, 0x04000000, 0x04000002, 0x04100400, },
153 {
154
155 0x02000000, 0x00004000, 0x00000100, 0x02004108, 0x02004008, 0x02000100, 0x00004108, 0x02004000, 0x00004000,
156 0x00000008, 0x02000008, 0x00004100, 0x02000108, 0x02004008, 0x02004100, 0x00000000, 0x00004100,
157 0x02000000, 0x00004008, 0x00000108, 0x02000100, 0x00004108, 0x00000000, 0x02000008, 0x00000008,
158 0x02000108, 0x02004108, 0x00004008, 0x02004000, 0x00000100, 0x00000108, 0x02004100, 0x02004100,
159 0x02000108, 0x00004008, 0x02004000, 0x00004000, 0x00000008, 0x02000008, 0x02000100, 0x02000000,
160 0x00004100, 0x02004108, 0x00000000, 0x00004108, 0x02000000, 0x00000100, 0x00004008, 0x02000108,
161 0x00000100, 0x00000000, 0x02004108, 0x02004008, 0x02004100, 0x00000108, 0x00004000, 0x00004100,
162 0x02004008, 0x02000100, 0x00000108, 0x00000008, 0x00004108, 0x02004000, 0x02000008, },
163 {
164
165 0x20000010, 0x00080010, 0x00000000, 0x20080800, 0x00080010, 0x00000800, 0x20000810, 0x00080000, 0x00000810,
166 0x20080810, 0x00080800, 0x20000000, 0x20000800, 0x20000010, 0x20080000, 0x00080810, 0x00080000,
167 0x20000810, 0x20080010, 0x00000000, 0x00000800, 0x00000010, 0x20080800, 0x20080010, 0x20080810,
168 0x20080000, 0x20000000, 0x00000810, 0x00000010, 0x00080800, 0x00080810, 0x20000800, 0x00000810,
169 0x20000000, 0x20000800, 0x00080810, 0x20080800, 0x00080010, 0x00000000, 0x20000800, 0x20000000,
170 0x00000800, 0x20080010, 0x00080000, 0x00080010, 0x20080810, 0x00080800, 0x00000010, 0x20080810,
171 0x00080800, 0x00080000, 0x20000810, 0x20000010, 0x20080000, 0x00080810, 0x00000000, 0x00000800,
172 0x20000010, 0x20000810, 0x20080800, 0x20080000, 0x00000810, 0x00000010, 0x20080010, },
173 {
174
175 0x00001000, 0x00000080, 0x00400080, 0x00400001, 0x00401081, 0x00001001, 0x00001080, 0x00000000, 0x00400000,
176 0x00400081, 0x00000081, 0x00401000, 0x00000001, 0x00401080, 0x00401000, 0x00000081, 0x00400081,
177 0x00001000, 0x00001001, 0x00401081, 0x00000000, 0x00400080, 0x00400001, 0x00001080, 0x00401001,
178 0x00001081, 0x00401080, 0x00000001, 0x00001081, 0x00401001, 0x00000080, 0x00400000, 0x00001081,
179 0x00401000, 0x00401001, 0x00000081, 0x00001000, 0x00000080, 0x00400000, 0x00401001, 0x00400081,
180 0x00001081, 0x00001080, 0x00000000, 0x00000080, 0x00400001, 0x00000001, 0x00400080, 0x00000000,
181 0x00400081, 0x00400080, 0x00001080, 0x00000081, 0x00001000, 0x00401081, 0x00400000, 0x00401080,
182 0x00000001, 0x00001001, 0x00401081, 0x00400001, 0x00401080, 0x00401000, 0x00001001, },
183 {
184
185 0x08200020, 0x08208000, 0x00008020, 0x00000000, 0x08008000, 0x00200020, 0x08200000, 0x08208020, 0x00000020,
186 0x08000000, 0x00208000, 0x00008020, 0x00208020, 0x08008020, 0x08000020, 0x08200000, 0x00008000,
187 0x00208020, 0x00200020, 0x08008000, 0x08208020, 0x08000020, 0x00000000, 0x00208000, 0x08000000,
188 0x00200000, 0x08008020, 0x08200020, 0x00200000, 0x00008000, 0x08208000, 0x00000020, 0x00200000,
189 0x00008000, 0x08000020, 0x08208020, 0x00008020, 0x08000000, 0x00000000, 0x00208000, 0x08200020,
190 0x08008020, 0x08008000, 0x00200020, 0x08208000, 0x00000020, 0x00200020, 0x08008000, 0x08208020,
191 0x00200000, 0x08200000, 0x08000020, 0x00208000, 0x00008020, 0x08008020, 0x08200000, 0x00000020,
192 0x08208000, 0x00208020, 0x00000000, 0x08000000, 0x08200020, 0x00008000, 0x00208020 } };
193
194 private static final int cov_2char[] = { 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, 0x42,
195 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
196 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C,
197 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A };
198
199 private static final int byteToUnsigned(byte b) {
200 int value = (int) b;
201
202 return (value >= 0 ? value : value + 256);
203 }
204
205 private static int fourBytesToInt(byte b[], int offset) {
206 int value;
207
208 value = byteToUnsigned(b[offset++]);
209 value |= (byteToUnsigned(b[offset++]) << 8);
210 value |= (byteToUnsigned(b[offset++]) << 16);
211 value |= (byteToUnsigned(b[offset++]) << 24);
212
213 return (value);
214 }
215
216 private static final void intToFourBytes(int iValue, byte b[], int offset) {
217 b[offset++] = (byte) ((iValue) & 0xff);
218 b[offset++] = (byte) ((iValue >>> 8) & 0xff);
219 b[offset++] = (byte) ((iValue >>> 16) & 0xff);
220 b[offset++] = (byte) ((iValue >>> 24) & 0xff);
221 }
222
223 private static final void PERM_OP(int a, int b, int n, int m, int results[]) {
224 int t;
225
226 t = ((a >>> n) ^ b) & m;
227 a ^= t << n;
228 b ^= t;
229
230 results[0] = a;
231 results[1] = b;
232 }
233
234 private static final int HPERM_OP(int a, int n, int m) {
235 int t;
236
237 t = ((a << (16 - n)) ^ a) & m;
238 a = a ^ t ^ (t >>> (16 - n));
239
240 return (a);
241 }
242
243 private static int[] des_set_key(byte key[]) {
244 int schedule[] = new int[ITERATIONS * 2];
245
246 int c = fourBytesToInt(key, 0);
247 int d = fourBytesToInt(key, 4);
248
249 int results[] = new int[2];
250
251 PERM_OP(d, c, 4, 0x0f0f0f0f, results);
252 d = results[0];
253 c = results[1];
254
255 c = HPERM_OP(c, -2, 0xcccc0000);
256 d = HPERM_OP(d, -2, 0xcccc0000);
257
258 PERM_OP(d, c, 1, 0x55555555, results);
259 d = results[0];
260 c = results[1];
261
262 PERM_OP(c, d, 8, 0x00ff00ff, results);
263 c = results[0];
264 d = results[1];
265
266 PERM_OP(d, c, 1, 0x55555555, results);
267 d = results[0];
268 c = results[1];
269
270 d = (((d & 0x000000ff) << 16) | (d & 0x0000ff00) | ((d & 0x00ff0000) >>> 16) | ((c & 0xf0000000) >>> 4));
271 c &= 0x0fffffff;
272
273 int s, t;
274 int j = 0;
275
276 for (int i = 0; i < ITERATIONS; i++) {
277 if (shifts2[i]) {
278 c = (c >>> 2) | (c << 26);
279 d = (d >>> 2) | (d << 26);
280 } else {
281 c = (c >>> 1) | (c << 27);
282 d = (d >>> 1) | (d << 27);
283 }
284
285 c &= 0x0fffffff;
286 d &= 0x0fffffff;
287
288 s = skb[0][(c) & 0x3f] | skb[1][((c >>> 6) & 0x03) | ((c >>> 7) & 0x3c)]
289 | skb[2][((c >>> 13) & 0x0f) | ((c >>> 14) & 0x30)]
290 | skb[3][((c >>> 20) & 0x01) | ((c >>> 21) & 0x06) | ((c >>> 22) & 0x38)];
291
292 t = skb[4][(d) & 0x3f] | skb[5][((d >>> 7) & 0x03) | ((d >>> 8) & 0x3c)] | skb[6][(d >>> 15) & 0x3f]
293 | skb[7][((d >>> 21) & 0x0f) | ((d >>> 22) & 0x30)];
294
295 schedule[j++] = ((t << 16) | (s & 0x0000ffff)) & 0xffffffff;
296 s = ((s >>> 16) | (t & 0xffff0000));
297
298 s = (s << 4) | (s >>> 28);
299 schedule[j++] = s & 0xffffffff;
300 }
301 return (schedule);
302 }
303
304 private static final int D_ENCRYPT(int L, int R, int S, int E0, int E1, int s[]) {
305 int t, u, v;
306
307 v = R ^ (R >>> 16);
308 u = v & E0;
309 v = v & E1;
310 u = (u ^ (u << 16)) ^ R ^ s[S];
311 t = (v ^ (v << 16)) ^ R ^ s[S + 1];
312 t = (t >>> 4) | (t << 28);
313
314 L ^= SPtrans[1][(t) & 0x3f] | SPtrans[3][(t >>> 8) & 0x3f] | SPtrans[5][(t >>> 16) & 0x3f] | SPtrans[7][(t >>> 24) & 0x3f]
315 | SPtrans[0][(u) & 0x3f] | SPtrans[2][(u >>> 8) & 0x3f] | SPtrans[4][(u >>> 16) & 0x3f]
316 | SPtrans[6][(u >>> 24) & 0x3f];
317
318 return (L);
319 }
320
321 private static final int[] body(int schedule[], int Eswap0, int Eswap1) {
322 int left = 0;
323 int right = 0;
324 int t = 0;
325
326 for (int j = 0; j < 25; j++) {
327 for (int i = 0; i < ITERATIONS * 2; i += 4) {
328 left = D_ENCRYPT(left, right, i, Eswap0, Eswap1, schedule);
329 right = D_ENCRYPT(right, left, i + 2, Eswap0, Eswap1, schedule);
330 }
331 t = left;
332 left = right;
333 right = t;
334 }
335
336 t = right;
337
338 right = (left >>> 1) | (left << 31);
339 left = (t >>> 1) | (t << 31);
340
341 left &= 0xffffffff;
342 right &= 0xffffffff;
343
344 int results[] = new int[2];
345
346 PERM_OP(right, left, 1, 0x55555555, results);
347 right = results[0];
348 left = results[1];
349
350 PERM_OP(left, right, 8, 0x00ff00ff, results);
351 left = results[0];
352 right = results[1];
353
354 PERM_OP(right, left, 2, 0x33333333, results);
355 right = results[0];
356 left = results[1];
357
358 PERM_OP(left, right, 16, 0x0000ffff, results);
359 left = results[0];
360 right = results[1];
361
362 PERM_OP(right, left, 4, 0x0f0f0f0f, results);
363 right = results[0];
364 left = results[1];
365
366 int out[] = new int[2];
367
368 out[0] = left;
369 out[1] = right;
370
371 return (out);
372 }
373
374 public static final String  crypt(String salt, String original) {
375 while (salt.length() < 2)
376 salt += "A";
377
378 StringBuffer buffer = new StringBuffer (" ");
379
380 char charZero = salt.charAt(0);
381 char charOne = salt.charAt(1);
382
383 buffer.setCharAt(0, charZero);
384 buffer.setCharAt(1, charOne);
385
386 int Eswap0 = con_salt[(int) charZero];
387 int Eswap1 = con_salt[(int) charOne] << 4;
388
389 byte key[] = new byte[8];
390
391 for (int i = 0; i < key.length; i++)
392 key[i] = (byte) 0;
393
394 for (int i = 0; i < key.length && i < original.length(); i++) {
395 int iChar = (int) original.charAt(i);
396
397 key[i] = (byte) (iChar << 1);
398 }
399
400 int schedule[] = des_set_key(key);
401 int out[] = body(schedule, Eswap0, Eswap1);
402
403 byte b[] = new byte[9];
404
405 intToFourBytes(out[0], b, 0);
406 intToFourBytes(out[1], b, 4);
407 b[8] = 0;
408
409 for (int i = 2, y = 0, u = 0x80; i < 13; i++) {
410 for (int j = 0, c = 0; j < 6; j++) {
411 c <<= 1;
412
413 if (((int) b[y] & u) != 0)
414 c |= 1;
415
416 u >>>= 1;
417
418 if (u == 0) {
419 y++;
420 u = 0x80;
421 }
422 buffer.setCharAt(i, (char) cov_2char[c]);
423 }
424 }
425 return (buffer.toString());
426 }
427
428 public static void main(String args[]) {
429 if (args.length >= 2) {
430 System.out.println("[" + args[0] + "] [" + args[1] + "] => [" + DESCrypt.crypt(args[0], args[1]) + "]");
431 }
432 }
433 } |
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