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annotate src/org/eclipse/jetty/util/security/UnixCrypt.java @ 889:5731a7707466

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author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 06 Oct 2016 23:24:30 -0600
parents 3428c60d7cfc
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1 /*
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2 * @(#)UnixCrypt.java 0.9 96/11/25
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3 *
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4 * Copyright (c) 1996 Aki Yoshida. All rights reserved.
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5 *
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6 * Permission to use, copy, modify and distribute this software
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7 * for non-commercial or commercial purposes and without fee is
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8 * hereby granted provided that this copyright notice appears in
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9 * all copies.
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10 */
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11
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12 /**
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13 * Unix crypt(3C) utility
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14 *
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15 * @version 0.9, 11/25/96
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16 * @author Aki Yoshida
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17 */
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18
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19 /**
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20 * modified April 2001
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21 * by Iris Van den Broeke, Daniel Deville
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22 */
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23
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24 package org.eclipse.jetty.util.security;
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25
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26
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27 /* ------------------------------------------------------------ */
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28 /**
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29 * Unix Crypt. Implements the one way cryptography used by Unix systems for
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30 * simple password protection.
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31 *
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32 * @version $Id: UnixCrypt.java,v 1.1 2005/10/05 14:09:14 janb Exp $
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33 * @author Greg Wilkins (gregw)
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34 */
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35 public class UnixCrypt
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36 {
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37
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38 /* (mostly) Standard DES Tables from Tom Truscott */
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39 private static final byte[] IP = { /* initial permutation */
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40 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8, 57, 49, 41, 33, 25, 17, 9, 1,
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41 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7 };
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42
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43 /* The final permutation is the inverse of IP - no table is necessary */
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44 private static final byte[] ExpandTr = { /* expansion operation */
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45 32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9, 10, 11, 12, 13, 12, 13, 14, 15, 16, 17, 16, 17, 18, 19, 20, 21, 20, 21, 22, 23, 24, 25, 24, 25, 26, 27, 28, 29,
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46 28, 29, 30, 31, 32, 1 };
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47
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48 private static final byte[] PC1 = { /* permuted choice table 1 */
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49 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36,
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50
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51 63, 55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 28, 20, 12, 4 };
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52
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53 private static final byte[] Rotates = { /* PC1 rotation schedule */
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54 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };
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55
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56 private static final byte[] PC2 = { /* permuted choice table 2 */
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57 9, 18, 14, 17, 11, 24, 1, 5, 22, 25, 3, 28, 15, 6, 21, 10, 35, 38, 23, 19, 12, 4, 26, 8, 43, 54, 16, 7, 27, 20, 13, 2,
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58
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59 0, 0, 41, 52, 31, 37, 47, 55, 0, 0, 30, 40, 51, 45, 33, 48, 0, 0, 44, 49, 39, 56, 34, 53, 0, 0, 46, 42, 50, 36, 29, 32 };
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60
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61 private static final byte[][] S = { /* 48->32 bit substitution tables */
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62 /* S[1] */
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63 { 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7, 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8, 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9,
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64 7, 3, 10, 5, 0, 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 },
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65 /* S[2] */
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66 { 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10, 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5, 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12,
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67 6, 9, 3, 2, 15, 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 },
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68 /* S[3] */
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69 { 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8, 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1, 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2,
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70 12, 5, 10, 14, 7, 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 },
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71 /* S[4] */
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72 { 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15, 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9, 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3,
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73 14, 5, 2, 8, 4, 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 },
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74 /* S[5] */
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75 { 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9, 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6, 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12,
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76 5, 6, 3, 0, 14, 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 },
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77 /* S[6] */
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78 { 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11, 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8, 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4,
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79 10, 1, 13, 11, 6, 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 },
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80 /* S[7] */
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81 { 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1, 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6, 1, 4, 11, 13, 12, 3, 7, 14, 10, 15,
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82 6, 8, 0, 5, 9, 2, 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 },
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83 /* S[8] */
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84 { 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7, 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2, 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10,
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85 13, 15, 3, 5, 8, 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 } };
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86
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87 private static final byte[] P32Tr = { /* 32-bit permutation function */
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88 16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5, 18, 31, 10, 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4, 25 };
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89
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90 private static final byte[] CIFP = { /*
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91 * compressed/interleaved
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92 * permutation
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93 */
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94 1, 2, 3, 4, 17, 18, 19, 20, 5, 6, 7, 8, 21, 22, 23, 24, 9, 10, 11, 12, 25, 26, 27, 28, 13, 14, 15, 16, 29, 30, 31, 32,
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95
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96 33, 34, 35, 36, 49, 50, 51, 52, 37, 38, 39, 40, 53, 54, 55, 56, 41, 42, 43, 44, 57, 58, 59, 60, 45, 46, 47, 48, 61, 62, 63, 64 };
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97
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98 private static final byte[] ITOA64 = { /* 0..63 => ascii-64 */
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99 (byte) '.', (byte) '/', (byte) '0', (byte) '1', (byte) '2', (byte) '3', (byte) '4', (byte) '5', (byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) 'A',
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100 (byte) 'B', (byte) 'C', (byte) 'D', (byte) 'E', (byte) 'F', (byte) 'G', (byte) 'H', (byte) 'I', (byte) 'J', (byte) 'K', (byte) 'L', (byte) 'M',
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101 (byte) 'N', (byte) 'O', (byte) 'P', (byte) 'Q', (byte) 'R', (byte) 'S', (byte) 'T', (byte) 'U', (byte) 'V', (byte) 'W', (byte) 'X', (byte) 'Y',
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102 (byte) 'Z', (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e', (byte) 'f', (byte) 'g', (byte) 'h', (byte) 'i', (byte) 'j', (byte) 'k',
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103 (byte) 'l', (byte) 'm', (byte) 'n', (byte) 'o', (byte) 'p', (byte) 'q', (byte) 'r', (byte) 's', (byte) 't', (byte) 'u', (byte) 'v', (byte) 'w',
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104 (byte) 'x', (byte) 'y', (byte) 'z' };
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105
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106 /* ===== Tables that are initialized at run time ==================== */
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107
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108 private static final byte[] A64TOI = new byte[128]; /* ascii-64 => 0..63 */
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109
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110 /* Initial key schedule permutation */
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111 private static final long[][] PC1ROT = new long[16][16];
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112
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113 /* Subsequent key schedule rotation permutations */
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114 private static final long[][][] PC2ROT = new long[2][16][16];
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115
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116 /* Initial permutation/expansion table */
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117 private static final long[][] IE3264 = new long[8][16];
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118
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119 /* Table that combines the S, P, and E operations. */
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120 private static final long[][] SPE = new long[8][64];
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121
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122 /* compressed/interleaved => final permutation table */
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123 private static final long[][] CF6464 = new long[16][16];
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124
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125 /* ==================================== */
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126
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127 static
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128 {
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129 byte[] perm = new byte[64];
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130 byte[] temp = new byte[64];
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131
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132 // inverse table.
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133 for (int i = 0; i < 64; i++)
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134 A64TOI[ITOA64[i]] = (byte) i;
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135
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136 // PC1ROT - bit reverse, then PC1, then Rotate, then PC2
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137 for (int i = 0; i < 64; i++)
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138 perm[i] = (byte) 0;
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139
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140 for (int i = 0; i < 64; i++)
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141 {
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142 int k;
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143 if ((k = PC2[i]) == 0) continue;
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144 k += Rotates[0] - 1;
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145 if ((k % 28) < Rotates[0]) k -= 28;
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146 k = PC1[k];
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147 if (k > 0)
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148 {
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149 k--;
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150 k = (k | 0x07) - (k & 0x07);
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151 k++;
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152 }
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153 perm[i] = (byte) k;
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154 }
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155 init_perm(PC1ROT, perm, 8);
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156
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157 // PC2ROT - PC2 inverse, then Rotate, then PC2
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158 for (int j = 0; j < 2; j++)
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159 {
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160 int k;
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161 for (int i = 0; i < 64; i++)
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162 perm[i] = temp[i] = 0;
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163 for (int i = 0; i < 64; i++)
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164 {
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165 if ((k = PC2[i]) == 0) continue;
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166 temp[k - 1] = (byte) (i + 1);
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167 }
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168 for (int i = 0; i < 64; i++)
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169 {
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170 if ((k = PC2[i]) == 0) continue;
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171 k += j;
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172 if ((k % 28) <= j) k -= 28;
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173 perm[i] = temp[k];
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174 }
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175
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176 init_perm(PC2ROT[j], perm, 8);
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177 }
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178
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179 // Bit reverse, intial permupation, expantion
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180 for (int i = 0; i < 8; i++)
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181 {
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182 for (int j = 0; j < 8; j++)
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183 {
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184 int k = (j < 2) ? 0 : IP[ExpandTr[i * 6 + j - 2] - 1];
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185 if (k > 32)
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186 k -= 32;
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187 else if (k > 0) k--;
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188 if (k > 0)
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189 {
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190 k--;
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191 k = (k | 0x07) - (k & 0x07);
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192 k++;
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193 }
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194 perm[i * 8 + j] = (byte) k;
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195 }
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196 }
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197
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198 init_perm(IE3264, perm, 8);
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199
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200 // Compression, final permutation, bit reverse
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201 for (int i = 0; i < 64; i++)
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202 {
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203 int k = IP[CIFP[i] - 1];
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204 if (k > 0)
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205 {
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206 k--;
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207 k = (k | 0x07) - (k & 0x07);
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208 k++;
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209 }
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210 perm[k - 1] = (byte) (i + 1);
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211 }
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212
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213 init_perm(CF6464, perm, 8);
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214
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215 // SPE table
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216 for (int i = 0; i < 48; i++)
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217 perm[i] = P32Tr[ExpandTr[i] - 1];
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218 for (int t = 0; t < 8; t++)
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219 {
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220 for (int j = 0; j < 64; j++)
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221 {
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222 int k = (((j >> 0) & 0x01) << 5) | (((j >> 1) & 0x01) << 3)
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223 | (((j >> 2) & 0x01) << 2)
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224 | (((j >> 3) & 0x01) << 1)
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225 | (((j >> 4) & 0x01) << 0)
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226 | (((j >> 5) & 0x01) << 4);
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227 k = S[t][k];
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228 k = (((k >> 3) & 0x01) << 0) | (((k >> 2) & 0x01) << 1) | (((k >> 1) & 0x01) << 2) | (((k >> 0) & 0x01) << 3);
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229 for (int i = 0; i < 32; i++)
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230 temp[i] = 0;
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231 for (int i = 0; i < 4; i++)
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232 temp[4 * t + i] = (byte) ((k >> i) & 0x01);
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233 long kk = 0;
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234 for (int i = 24; --i >= 0;)
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235 kk = ((kk << 1) | ((long) temp[perm[i] - 1]) << 32 | (temp[perm[i + 24] - 1]));
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236
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237 SPE[t][j] = to_six_bit(kk);
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238 }
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239 }
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240 }
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241
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242 /**
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243 * You can't call the constructer.
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244 */
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245 private UnixCrypt()
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246 {
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247 }
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248
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249 /**
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250 * Returns the transposed and split code of a 24-bit code into a 4-byte
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251 * code, each having 6 bits.
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252 */
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253 private static int to_six_bit(int num)
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254 {
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255 return (((num << 26) & 0xfc000000) | ((num << 12) & 0xfc0000) | ((num >> 2) & 0xfc00) | ((num >> 16) & 0xfc));
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256 }
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257
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258 /**
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259 * Returns the transposed and split code of two 24-bit code into two 4-byte
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260 * code, each having 6 bits.
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261 */
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262 private static long to_six_bit(long num)
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263 {
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264 return (((num << 26) & 0xfc000000fc000000L) | ((num << 12) & 0xfc000000fc0000L) | ((num >> 2) & 0xfc000000fc00L) | ((num >> 16) & 0xfc000000fcL));
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265 }
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266
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267 /**
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268 * Returns the permutation of the given 64-bit code with the specified
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269 * permutataion table.
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270 */
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271 private static long perm6464(long c, long[][] p)
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272 {
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273 long out = 0L;
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274 for (int i = 8; --i >= 0;)
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275 {
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276 int t = (int) (0x00ff & c);
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277 c >>= 8;
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278 long tp = p[i << 1][t & 0x0f];
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279 out |= tp;
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280 tp = p[(i << 1) + 1][t >> 4];
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281 out |= tp;
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282 }
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283 return out;
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284 }
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285
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286 /**
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287 * Returns the permutation of the given 32-bit code with the specified
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288 * permutataion table.
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289 */
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290 private static long perm3264(int c, long[][] p)
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291 {
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292 long out = 0L;
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293 for (int i = 4; --i >= 0;)
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294 {
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295 int t = (0x00ff & c);
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296 c >>= 8;
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297 long tp = p[i << 1][t & 0x0f];
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298 out |= tp;
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299 tp = p[(i << 1) + 1][t >> 4];
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300 out |= tp;
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301 }
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302 return out;
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303 }
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304
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305 /**
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306 * Returns the key schedule for the given key.
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307 */
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308 private static long[] des_setkey(long keyword)
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309 {
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310 long K = perm6464(keyword, PC1ROT);
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311 long[] KS = new long[16];
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312 KS[0] = K & ~0x0303030300000000L;
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313
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314 for (int i = 1; i < 16; i++)
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315 {
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316 KS[i] = K;
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317 K = perm6464(K, PC2ROT[Rotates[i] - 1]);
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318
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319 KS[i] = K & ~0x0303030300000000L;
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320 }
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321 return KS;
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322 }
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323
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324 /**
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325 * Returns the DES encrypted code of the given word with the specified
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326 * environment.
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327 */
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328 private static long des_cipher(long in, int salt, int num_iter, long[] KS)
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329 {
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330 salt = to_six_bit(salt);
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331 long L = in;
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332 long R = L;
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333 L &= 0x5555555555555555L;
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334 R = (R & 0xaaaaaaaa00000000L) | ((R >> 1) & 0x0000000055555555L);
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335 L = ((((L << 1) | (L << 32)) & 0xffffffff00000000L) | ((R | (R >> 32)) & 0x00000000ffffffffL));
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336
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337 L = perm3264((int) (L >> 32), IE3264);
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338 R = perm3264((int) (L & 0xffffffff), IE3264);
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339
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340 while (--num_iter >= 0)
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341 {
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342 for (int loop_count = 0; loop_count < 8; loop_count++)
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343 {
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344 long kp;
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345 long B;
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diff changeset
346 long k;
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347
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348 kp = KS[(loop_count << 1)];
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349 k = ((R >> 32) ^ R) & salt & 0xffffffffL;
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diff changeset
350 k |= (k << 32);
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diff changeset
351 B = (k ^ R ^ kp);
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352
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353 L ^= (SPE[0][(int) ((B >> 58) & 0x3f)] ^ SPE[1][(int) ((B >> 50) & 0x3f)]
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354 ^ SPE[2][(int) ((B >> 42) & 0x3f)]
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diff changeset
355 ^ SPE[3][(int) ((B >> 34) & 0x3f)]
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diff changeset
356 ^ SPE[4][(int) ((B >> 26) & 0x3f)]
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diff changeset
357 ^ SPE[5][(int) ((B >> 18) & 0x3f)]
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diff changeset
358 ^ SPE[6][(int) ((B >> 10) & 0x3f)] ^ SPE[7][(int) ((B >> 2) & 0x3f)]);
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359
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360 kp = KS[(loop_count << 1) + 1];
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diff changeset
361 k = ((L >> 32) ^ L) & salt & 0xffffffffL;
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diff changeset
362 k |= (k << 32);
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diff changeset
363 B = (k ^ L ^ kp);
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364
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365 R ^= (SPE[0][(int) ((B >> 58) & 0x3f)] ^ SPE[1][(int) ((B >> 50) & 0x3f)]
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366 ^ SPE[2][(int) ((B >> 42) & 0x3f)]
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367 ^ SPE[3][(int) ((B >> 34) & 0x3f)]
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parents:
diff changeset
368 ^ SPE[4][(int) ((B >> 26) & 0x3f)]
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diff changeset
369 ^ SPE[5][(int) ((B >> 18) & 0x3f)]
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diff changeset
370 ^ SPE[6][(int) ((B >> 10) & 0x3f)] ^ SPE[7][(int) ((B >> 2) & 0x3f)]);
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diff changeset
371 }
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parents:
diff changeset
372 // swap L and R
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diff changeset
373 L ^= R;
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374 R ^= L;
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diff changeset
375 L ^= R;
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diff changeset
376 }
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diff changeset
377 L = ((((L >> 35) & 0x0f0f0f0fL) | (((L & 0xffffffff) << 1) & 0xf0f0f0f0L)) << 32 | (((R >> 35) & 0x0f0f0f0fL) | (((R & 0xffffffff) << 1) & 0xf0f0f0f0L)));
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parents:
diff changeset
378
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diff changeset
379 L = perm6464(L, CF6464);
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diff changeset
380
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diff changeset
381 return L;
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parents:
diff changeset
382 }
3428c60d7cfc replace jetty jars with source
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diff changeset
383
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
384 /**
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parents:
diff changeset
385 * Initializes the given permutation table with the mapping table.
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diff changeset
386 */
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387 private static void init_perm(long[][] perm, byte[] p, int chars_out)
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diff changeset
388 {
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diff changeset
389 for (int k = 0; k < chars_out * 8; k++)
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parents:
diff changeset
390 {
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diff changeset
391
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diff changeset
392 int l = p[k] - 1;
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diff changeset
393 if (l < 0) continue;
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diff changeset
394 int i = l >> 2;
3428c60d7cfc replace jetty jars with source
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diff changeset
395 l = 1 << (l & 0x03);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
396 for (int j = 0; j < 16; j++)
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parents:
diff changeset
397 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
398 int s = ((k & 0x07) + ((7 - (k >> 3)) << 3));
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
399 if ((j & l) != 0x00) perm[i][j] |= (1L << s);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
400 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
401 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
402 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
403
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
404 /**
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
405 * Encrypts String into crypt (Unix) code.
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parents:
diff changeset
406 *
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
407 * @param key the key to be encrypted
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parents:
diff changeset
408 * @param setting the salt to be used
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parents:
diff changeset
409 * @return the encrypted String
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parents:
diff changeset
410 */
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parents:
diff changeset
411 public static String crypt(String key, String setting)
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parents:
diff changeset
412 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
413 long constdatablock = 0L; /* encryption constant */
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parents:
diff changeset
414 byte[] cryptresult = new byte[13]; /* encrypted result */
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parents:
diff changeset
415 long keyword = 0L;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
416 /* invalid parameters! */
3428c60d7cfc replace jetty jars with source
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diff changeset
417 if (key == null || setting == null) return "*"; // will NOT match under
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diff changeset
418 // ANY circumstances!
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parents:
diff changeset
419
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
420 int keylen = key.length();
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
421
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
422 for (int i = 0; i < 8; i++)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
423 {
3428c60d7cfc replace jetty jars with source
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diff changeset
424 keyword = (keyword << 8) | ((i < keylen) ? 2 * key.charAt(i) : 0);
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parents:
diff changeset
425 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
426
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
427 long[] KS = des_setkey(keyword);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
428
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
429 int salt = 0;
3428c60d7cfc replace jetty jars with source
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diff changeset
430 for (int i = 2; --i >= 0;)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
431 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
432 char c = (i < setting.length()) ? setting.charAt(i) : '.';
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diff changeset
433 cryptresult[i] = (byte) c;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
434 salt = (salt << 6) | (0x00ff & A64TOI[c]);
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diff changeset
435 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
436
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
437 long rsltblock = des_cipher(constdatablock, salt, 25, KS);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
438
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
439 cryptresult[12] = ITOA64[(((int) rsltblock) << 2) & 0x3f];
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
440 rsltblock >>= 4;
3428c60d7cfc replace jetty jars with source
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diff changeset
441 for (int i = 12; --i >= 2;)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
442 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
443 cryptresult[i] = ITOA64[((int) rsltblock) & 0x3f];
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parents:
diff changeset
444 rsltblock >>= 6;
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parents:
diff changeset
445 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
446
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
447 return new String(cryptresult, 0, 13);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
448 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
449
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450 public static void main(String[] arg)
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451 {
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452 if (arg.length != 2)
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453 {
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454 System.err.println("Usage - java org.eclipse.util.UnixCrypt <key> <salt>");
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455 System.exit(1);
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456 }
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457
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458 System.err.println("Crypt=" + crypt(arg[0], arg[1]));
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459 }
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460
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461 }