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1 //
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2 // This DES class has been extracted from package Acme.Crypto for use in VNC.
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3 // The bytebit[] array has been reversed so that the most significant bit
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4 // in each byte of the key is ignored, not the least significant. Also the
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5 // unnecessary odd parity code has been removed.
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6 //
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7 // These changes are:
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8 // Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
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9 //
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10 // This software is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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13 //
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14
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15 // DesCipher - the DES encryption method
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16 //
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17 // The meat of this code is by Dave Zimmerman <dzimm@widget.com>, and is:
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18 //
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19 // Copyright (c) 1996 Widget Workshop, Inc. All Rights Reserved.
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20 //
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21 // Permission to use, copy, modify, and distribute this software
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22 // and its documentation for NON-COMMERCIAL or COMMERCIAL purposes and
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23 // without fee is hereby granted, provided that this copyright notice is kept
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24 // intact.
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25 //
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26 // WIDGET WORKSHOP MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY
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27 // OF THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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28 // TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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29 // PARTICULAR PURPOSE, OR NON-INFRINGEMENT. WIDGET WORKSHOP SHALL NOT BE LIABLE
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30 // FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
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31 // DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
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32 //
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33 // THIS SOFTWARE IS NOT DESIGNED OR INTENDED FOR USE OR RESALE AS ON-LINE
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34 // CONTROL EQUIPMENT IN HAZARDOUS ENVIRONMENTS REQUIRING FAIL-SAFE
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35 // PERFORMANCE, SUCH AS IN THE OPERATION OF NUCLEAR FACILITIES, AIRCRAFT
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36 // NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL, DIRECT LIFE
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37 // SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH THE FAILURE OF THE
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38 // SOFTWARE COULD LEAD DIRECTLY TO DEATH, PERSONAL INJURY, OR SEVERE
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39 // PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH RISK ACTIVITIES"). WIDGET WORKSHOP
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40 // SPECIFICALLY DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR
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41 // HIGH RISK ACTIVITIES.
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42 //
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43 //
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44 // The rest is:
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45 //
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46 // Copyright (C) 1996 by Jef Poskanzer <jef@acme.com>. All rights reserved.
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47 //
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48 // Redistribution and use in source and binary forms, with or without
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49 // modification, are permitted provided that the following conditions
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50 // are met:
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51 // 1. Redistributions of source code must retain the above copyright
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52 // notice, this list of conditions and the following disclaimer.
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53 // 2. Redistributions in binary form must reproduce the above copyright
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54 // notice, this list of conditions and the following disclaimer in the
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55 // documentation and/or other materials provided with the distribution.
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56 //
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57 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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58 // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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59 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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60 // ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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61 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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62 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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63 // OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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64 // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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65 // LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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66 // OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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67 // SUCH DAMAGE.
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68 //
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69 // Visit the ACME Labs Java page for up-to-date versions of this and other
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70 // fine Java utilities: http://www.acme.com/java/
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71
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72
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73 import java.io.*;
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74
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75 /// The DES encryption method.
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76 // <P>
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77 // This is surprisingly fast, for pure Java. On a SPARC 20, wrapped
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78 // in Acme.Crypto.EncryptedOutputStream or Acme.Crypto.EncryptedInputStream,
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79 // it does around 7000 bytes/second.
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80 // <P>
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81 // Most of this code is by Dave Zimmerman <dzimm@widget.com>, and is
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82 // Copyright (c) 1996 Widget Workshop, Inc. See the source file for details.
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83 // <P>
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84 // <A HREF="/resources/classes/Acme/Crypto/DesCipher.java">Fetch the software.</A><BR>
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85 // <A HREF="/resources/classes/Acme.tar.Z">Fetch the entire Acme package.</A>
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86 // <P>
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87 // @see Des3Cipher
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88 // @see EncryptedOutputStream
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89 // @see EncryptedInputStream
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90
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91 public class DesCipher
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92 {
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93
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94 // Constructor, byte-array key.
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95 public DesCipher( byte[] key )
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96 {
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97 setKey( key );
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98 }
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99
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100 // Key routines.
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101
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102 private int[] encryptKeys = new int[32];
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103 private int[] decryptKeys = new int[32];
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104
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105 /// Set the key.
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106 public void setKey( byte[] key )
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107 {
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108 deskey( key, true, encryptKeys );
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109 deskey( key, false, decryptKeys );
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110 }
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111
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112 // Turn an 8-byte key into internal keys.
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113 private void deskey( byte[] keyBlock, boolean encrypting, int[] KnL )
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114 {
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115 int i, j, l, m, n;
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116 int[] pc1m = new int[56];
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117 int[] pcr = new int[56];
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118 int[] kn = new int[32];
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119
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120 for ( j = 0; j < 56; ++j )
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121 {
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122 l = pc1[j];
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123 m = l & 07;
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124 pc1m[j] = ( (keyBlock[l >>> 3] & bytebit[m]) != 0 )? 1: 0;
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125 }
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126
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127 for ( i = 0; i < 16; ++i )
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128 {
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129 if ( encrypting )
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130 m = i << 1;
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131 else
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132 m = (15-i) << 1;
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133 n = m+1;
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134 kn[m] = kn[n] = 0;
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135 for ( j = 0; j < 28; ++j )
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136 {
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137 l = j+totrot[i];
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138 if ( l < 28 )
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139 pcr[j] = pc1m[l];
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140 else
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141 pcr[j] = pc1m[l-28];
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142 }
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143 for ( j=28; j < 56; ++j )
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144 {
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145 l = j+totrot[i];
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146 if ( l < 56 )
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147 pcr[j] = pc1m[l];
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148 else
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149 pcr[j] = pc1m[l-28];
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150 }
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151 for ( j = 0; j < 24; ++j )
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152 {
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153 if ( pcr[pc2[j]] != 0 )
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154 kn[m] |= bigbyte[j];
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155 if ( pcr[pc2[j+24]] != 0 )
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156 kn[n] |= bigbyte[j];
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157 }
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158 }
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159 cookey( kn, KnL );
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160 }
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161
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162 private void cookey( int[] raw, int KnL[] )
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163 {
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164 int raw0, raw1;
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165 int rawi, KnLi;
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166 int i;
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167
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168 for ( i = 0, rawi = 0, KnLi = 0; i < 16; ++i )
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169 {
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170 raw0 = raw[rawi++];
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171 raw1 = raw[rawi++];
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172 KnL[KnLi] = (raw0 & 0x00fc0000) << 6;
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173 KnL[KnLi] |= (raw0 & 0x00000fc0) << 10;
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174 KnL[KnLi] |= (raw1 & 0x00fc0000) >>> 10;
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175 KnL[KnLi] |= (raw1 & 0x00000fc0) >>> 6;
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176 ++KnLi;
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177 KnL[KnLi] = (raw0 & 0x0003f000) << 12;
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178 KnL[KnLi] |= (raw0 & 0x0000003f) << 16;
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179 KnL[KnLi] |= (raw1 & 0x0003f000) >>> 4;
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180 KnL[KnLi] |= (raw1 & 0x0000003f);
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181 ++KnLi;
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182 }
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183 }
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184
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185
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186 // Block encryption routines.
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187
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188 private int[] tempInts = new int[2];
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189
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190 /// Encrypt a block of eight bytes.
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191 public void encrypt( byte[] clearText, int clearOff, byte[] cipherText, int cipherOff )
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192 {
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193 squashBytesToInts( clearText, clearOff, tempInts, 0, 2 );
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194 des( tempInts, tempInts, encryptKeys );
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195 spreadIntsToBytes( tempInts, 0, cipherText, cipherOff, 2 );
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196 }
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197
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198 /// Decrypt a block of eight bytes.
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199 public void decrypt( byte[] cipherText, int cipherOff, byte[] clearText, int clearOff )
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200 {
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201 squashBytesToInts( cipherText, cipherOff, tempInts, 0, 2 );
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202 des( tempInts, tempInts, decryptKeys );
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203 spreadIntsToBytes( tempInts, 0, clearText, clearOff, 2 );
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204 }
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205
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206 // The DES function.
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207 private void des( int[] inInts, int[] outInts, int[] keys )
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208 {
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209 int fval, work, right, leftt;
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210 int round;
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211 int keysi = 0;
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212
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213 leftt = inInts[0];
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214 right = inInts[1];
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215
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216 work = ((leftt >>> 4) ^ right) & 0x0f0f0f0f;
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217 right ^= work;
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218 leftt ^= (work << 4);
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219
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220 work = ((leftt >>> 16) ^ right) & 0x0000ffff;
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221 right ^= work;
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222 leftt ^= (work << 16);
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223
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224 work = ((right >>> 2) ^ leftt) & 0x33333333;
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225 leftt ^= work;
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226 right ^= (work << 2);
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227
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228 work = ((right >>> 8) ^ leftt) & 0x00ff00ff;
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229 leftt ^= work;
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230 right ^= (work << 8);
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231 right = (right << 1) | ((right >>> 31) & 1);
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232
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233 work = (leftt ^ right) & 0xaaaaaaaa;
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234 leftt ^= work;
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235 right ^= work;
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236 leftt = (leftt << 1) | ((leftt >>> 31) & 1);
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237
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238 for ( round = 0; round < 8; ++round )
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239 {
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240 work = (right << 28) | (right >>> 4);
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241 work ^= keys[keysi++];
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242 fval = SP7[ work & 0x0000003f ];
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243 fval |= SP5[(work >>> 8) & 0x0000003f ];
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244 fval |= SP3[(work >>> 16) & 0x0000003f ];
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245 fval |= SP1[(work >>> 24) & 0x0000003f ];
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246 work = right ^ keys[keysi++];
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247 fval |= SP8[ work & 0x0000003f ];
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248 fval |= SP6[(work >>> 8) & 0x0000003f ];
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249 fval |= SP4[(work >>> 16) & 0x0000003f ];
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250 fval |= SP2[(work >>> 24) & 0x0000003f ];
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251 leftt ^= fval;
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252 work = (leftt << 28) | (leftt >>> 4);
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253 work ^= keys[keysi++];
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254 fval = SP7[ work & 0x0000003f ];
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255 fval |= SP5[(work >>> 8) & 0x0000003f ];
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256 fval |= SP3[(work >>> 16) & 0x0000003f ];
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257 fval |= SP1[(work >>> 24) & 0x0000003f ];
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258 work = leftt ^ keys[keysi++];
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259 fval |= SP8[ work & 0x0000003f ];
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260 fval |= SP6[(work >>> 8) & 0x0000003f ];
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261 fval |= SP4[(work >>> 16) & 0x0000003f ];
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262 fval |= SP2[(work >>> 24) & 0x0000003f ];
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263 right ^= fval;
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264 }
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265
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266 right = (right << 31) | (right >>> 1);
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267 work = (leftt ^ right) & 0xaaaaaaaa;
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268 leftt ^= work;
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269 right ^= work;
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270 leftt = (leftt << 31) | (leftt >>> 1);
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271 work = ((leftt >>> 8) ^ right) & 0x00ff00ff;
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272 right ^= work;
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273 leftt ^= (work << 8);
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274 work = ((leftt >>> 2) ^ right) & 0x33333333;
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275 right ^= work;
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276 leftt ^= (work << 2);
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277 work = ((right >>> 16) ^ leftt) & 0x0000ffff;
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278 leftt ^= work;
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279 right ^= (work << 16);
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280 work = ((right >>> 4) ^ leftt) & 0x0f0f0f0f;
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281 leftt ^= work;
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282 right ^= (work << 4);
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283 outInts[0] = right;
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284 outInts[1] = leftt;
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285 }
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286
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287
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288 // Tables, permutations, S-boxes, etc.
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289
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290 private static byte[] bytebit = {
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291 (byte)0x01, (byte)0x02, (byte)0x04, (byte)0x08,
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292 (byte)0x10, (byte)0x20, (byte)0x40, (byte)0x80
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293 };
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294 private static int[] bigbyte = {
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295 0x800000, 0x400000, 0x200000, 0x100000,
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296 0x080000, 0x040000, 0x020000, 0x010000,
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297 0x008000, 0x004000, 0x002000, 0x001000,
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298 0x000800, 0x000400, 0x000200, 0x000100,
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299 0x000080, 0x000040, 0x000020, 0x000010,
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300 0x000008, 0x000004, 0x000002, 0x000001
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301 };
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302 private static byte[] pc1 = {
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303 (byte)56, (byte)48, (byte)40, (byte)32, (byte)24, (byte)16, (byte) 8,
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304 (byte) 0, (byte)57, (byte)49, (byte)41, (byte)33, (byte)25, (byte)17,
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305 (byte) 9, (byte) 1, (byte)58, (byte)50, (byte)42, (byte)34, (byte)26,
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306 (byte)18, (byte)10, (byte) 2, (byte)59, (byte)51, (byte)43, (byte)35,
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307 (byte)62, (byte)54, (byte)46, (byte)38, (byte)30, (byte)22, (byte)14,
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308 (byte) 6, (byte)61, (byte)53, (byte)45, (byte)37, (byte)29, (byte)21,
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309 (byte)13, (byte) 5, (byte)60, (byte)52, (byte)44, (byte)36, (byte)28,
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310 (byte)20, (byte)12, (byte) 4, (byte)27, (byte)19, (byte)11, (byte)3
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311 };
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312 private static int[] totrot = {
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313 1, 2, 4, 6, 8, 10, 12, 14, 15, 17, 19, 21, 23, 25, 27, 28
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314 };
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315
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316 private static byte[] pc2 = {
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317 (byte)13, (byte)16, (byte)10, (byte)23, (byte) 0, (byte) 4,
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318 (byte) 2, (byte)27, (byte)14, (byte) 5, (byte)20, (byte) 9,
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319 (byte)22, (byte)18, (byte)11, (byte)3 , (byte)25, (byte) 7,
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320 (byte)15, (byte) 6, (byte)26, (byte)19, (byte)12, (byte) 1,
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321 (byte)40, (byte)51, (byte)30, (byte)36, (byte)46, (byte)54,
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322 (byte)29, (byte)39, (byte)50, (byte)44, (byte)32, (byte)47,
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323 (byte)43, (byte)48, (byte)38, (byte)55, (byte)33, (byte)52,
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324 (byte)45, (byte)41, (byte)49, (byte)35, (byte)28, (byte)31,
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325 };
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326
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327 private static int[] SP1 = {
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328 0x01010400, 0x00000000, 0x00010000, 0x01010404,
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329 0x01010004, 0x00010404, 0x00000004, 0x00010000,
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330 0x00000400, 0x01010400, 0x01010404, 0x00000400,
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331 0x01000404, 0x01010004, 0x01000000, 0x00000004,
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332 0x00000404, 0x01000400, 0x01000400, 0x00010400,
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333 0x00010400, 0x01010000, 0x01010000, 0x01000404,
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334 0x00010004, 0x01000004, 0x01000004, 0x00010004,
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335 0x00000000, 0x00000404, 0x00010404, 0x01000000,
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336 0x00010000, 0x01010404, 0x00000004, 0x01010000,
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337 0x01010400, 0x01000000, 0x01000000, 0x00000400,
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338 0x01010004, 0x00010000, 0x00010400, 0x01000004,
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339 0x00000400, 0x00000004, 0x01000404, 0x00010404,
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340 0x01010404, 0x00010004, 0x01010000, 0x01000404,
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341 0x01000004, 0x00000404, 0x00010404, 0x01010400,
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342 0x00000404, 0x01000400, 0x01000400, 0x00000000,
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343 0x00010004, 0x00010400, 0x00000000, 0x01010004
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344 };
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345 private static int[] SP2 = {
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346 0x80108020, 0x80008000, 0x00008000, 0x00108020,
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347 0x00100000, 0x00000020, 0x80100020, 0x80008020,
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348 0x80000020, 0x80108020, 0x80108000, 0x80000000,
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349 0x80008000, 0x00100000, 0x00000020, 0x80100020,
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350 0x00108000, 0x00100020, 0x80008020, 0x00000000,
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351 0x80000000, 0x00008000, 0x00108020, 0x80100000,
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352 0x00100020, 0x80000020, 0x00000000, 0x00108000,
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353 0x00008020, 0x80108000, 0x80100000, 0x00008020,
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354 0x00000000, 0x00108020, 0x80100020, 0x00100000,
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355 0x80008020, 0x80100000, 0x80108000, 0x00008000,
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356 0x80100000, 0x80008000, 0x00000020, 0x80108020,
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357 0x00108020, 0x00000020, 0x00008000, 0x80000000,
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358 0x00008020, 0x80108000, 0x00100000, 0x80000020,
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359 0x00100020, 0x80008020, 0x80000020, 0x00100020,
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360 0x00108000, 0x00000000, 0x80008000, 0x00008020,
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361 0x80000000, 0x80100020, 0x80108020, 0x00108000
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362 };
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363 private static int[] SP3 = {
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364 0x00000208, 0x08020200, 0x00000000, 0x08020008,
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365 0x08000200, 0x00000000, 0x00020208, 0x08000200,
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366 0x00020008, 0x08000008, 0x08000008, 0x00020000,
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367 0x08020208, 0x00020008, 0x08020000, 0x00000208,
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368 0x08000000, 0x00000008, 0x08020200, 0x00000200,
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369 0x00020200, 0x08020000, 0x08020008, 0x00020208,
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370 0x08000208, 0x00020200, 0x00020000, 0x08000208,
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371 0x00000008, 0x08020208, 0x00000200, 0x08000000,
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372 0x08020200, 0x08000000, 0x00020008, 0x00000208,
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373 0x00020000, 0x08020200, 0x08000200, 0x00000000,
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374 0x00000200, 0x00020008, 0x08020208, 0x08000200,
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375 0x08000008, 0x00000200, 0x00000000, 0x08020008,
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376 0x08000208, 0x00020000, 0x08000000, 0x08020208,
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377 0x00000008, 0x00020208, 0x00020200, 0x08000008,
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378 0x08020000, 0x08000208, 0x00000208, 0x08020000,
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379 0x00020208, 0x00000008, 0x08020008, 0x00020200
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380 };
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381 private static int[] SP4 = {
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382 0x00802001, 0x00002081, 0x00002081, 0x00000080,
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383 0x00802080, 0x00800081, 0x00800001, 0x00002001,
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384 0x00000000, 0x00802000, 0x00802000, 0x00802081,
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385 0x00000081, 0x00000000, 0x00800080, 0x00800001,
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386 0x00000001, 0x00002000, 0x00800000, 0x00802001,
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387 0x00000080, 0x00800000, 0x00002001, 0x00002080,
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388 0x00800081, 0x00000001, 0x00002080, 0x00800080,
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389 0x00002000, 0x00802080, 0x00802081, 0x00000081,
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390 0x00800080, 0x00800001, 0x00802000, 0x00802081,
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391 0x00000081, 0x00000000, 0x00000000, 0x00802000,
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392 0x00002080, 0x00800080, 0x00800081, 0x00000001,
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393 0x00802001, 0x00002081, 0x00002081, 0x00000080,
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394 0x00802081, 0x00000081, 0x00000001, 0x00002000,
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395 0x00800001, 0x00002001, 0x00802080, 0x00800081,
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396 0x00002001, 0x00002080, 0x00800000, 0x00802001,
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397 0x00000080, 0x00800000, 0x00002000, 0x00802080
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398 };
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399 private static int[] SP5 = {
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400 0x00000100, 0x02080100, 0x02080000, 0x42000100,
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401 0x00080000, 0x00000100, 0x40000000, 0x02080000,
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402 0x40080100, 0x00080000, 0x02000100, 0x40080100,
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403 0x42000100, 0x42080000, 0x00080100, 0x40000000,
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404 0x02000000, 0x40080000, 0x40080000, 0x00000000,
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405 0x40000100, 0x42080100, 0x42080100, 0x02000100,
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406 0x42080000, 0x40000100, 0x00000000, 0x42000000,
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407 0x02080100, 0x02000000, 0x42000000, 0x00080100,
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408 0x00080000, 0x42000100, 0x00000100, 0x02000000,
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409 0x40000000, 0x02080000, 0x42000100, 0x40080100,
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410 0x02000100, 0x40000000, 0x42080000, 0x02080100,
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411 0x40080100, 0x00000100, 0x02000000, 0x42080000,
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412 0x42080100, 0x00080100, 0x42000000, 0x42080100,
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413 0x02080000, 0x00000000, 0x40080000, 0x42000000,
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414 0x00080100, 0x02000100, 0x40000100, 0x00080000,
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|
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415 0x00000000, 0x40080000, 0x02080100, 0x40000100
|
|
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416 };
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|
417 private static int[] SP6 = {
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418 0x20000010, 0x20400000, 0x00004000, 0x20404010,
|
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419 0x20400000, 0x00000010, 0x20404010, 0x00400000,
|
|
|
420 0x20004000, 0x00404010, 0x00400000, 0x20000010,
|
|
|
421 0x00400010, 0x20004000, 0x20000000, 0x00004010,
|
|
|
422 0x00000000, 0x00400010, 0x20004010, 0x00004000,
|
|
|
423 0x00404000, 0x20004010, 0x00000010, 0x20400010,
|
|
|
424 0x20400010, 0x00000000, 0x00404010, 0x20404000,
|
|
|
425 0x00004010, 0x00404000, 0x20404000, 0x20000000,
|
|
|
426 0x20004000, 0x00000010, 0x20400010, 0x00404000,
|
|
|
427 0x20404010, 0x00400000, 0x00004010, 0x20000010,
|
|
|
428 0x00400000, 0x20004000, 0x20000000, 0x00004010,
|
|
|
429 0x20000010, 0x20404010, 0x00404000, 0x20400000,
|
|
|
430 0x00404010, 0x20404000, 0x00000000, 0x20400010,
|
|
|
431 0x00000010, 0x00004000, 0x20400000, 0x00404010,
|
|
|
432 0x00004000, 0x00400010, 0x20004010, 0x00000000,
|
|
|
433 0x20404000, 0x20000000, 0x00400010, 0x20004010
|
|
|
434 };
|
|
|
435 private static int[] SP7 = {
|
|
|
436 0x00200000, 0x04200002, 0x04000802, 0x00000000,
|
|
|
437 0x00000800, 0x04000802, 0x00200802, 0x04200800,
|
|
|
438 0x04200802, 0x00200000, 0x00000000, 0x04000002,
|
|
|
439 0x00000002, 0x04000000, 0x04200002, 0x00000802,
|
|
|
440 0x04000800, 0x00200802, 0x00200002, 0x04000800,
|
|
|
441 0x04000002, 0x04200000, 0x04200800, 0x00200002,
|
|
|
442 0x04200000, 0x00000800, 0x00000802, 0x04200802,
|
|
|
443 0x00200800, 0x00000002, 0x04000000, 0x00200800,
|
|
|
444 0x04000000, 0x00200800, 0x00200000, 0x04000802,
|
|
|
445 0x04000802, 0x04200002, 0x04200002, 0x00000002,
|
|
|
446 0x00200002, 0x04000000, 0x04000800, 0x00200000,
|
|
|
447 0x04200800, 0x00000802, 0x00200802, 0x04200800,
|
|
|
448 0x00000802, 0x04000002, 0x04200802, 0x04200000,
|
|
|
449 0x00200800, 0x00000000, 0x00000002, 0x04200802,
|
|
|
450 0x00000000, 0x00200802, 0x04200000, 0x00000800,
|
|
|
451 0x04000002, 0x04000800, 0x00000800, 0x00200002
|
|
|
452 };
|
|
|
453 private static int[] SP8 = {
|
|
|
454 0x10001040, 0x00001000, 0x00040000, 0x10041040,
|
|
|
455 0x10000000, 0x10001040, 0x00000040, 0x10000000,
|
|
|
456 0x00040040, 0x10040000, 0x10041040, 0x00041000,
|
|
|
457 0x10041000, 0x00041040, 0x00001000, 0x00000040,
|
|
|
458 0x10040000, 0x10000040, 0x10001000, 0x00001040,
|
|
|
459 0x00041000, 0x00040040, 0x10040040, 0x10041000,
|
|
|
460 0x00001040, 0x00000000, 0x00000000, 0x10040040,
|
|
|
461 0x10000040, 0x10001000, 0x00041040, 0x00040000,
|
|
|
462 0x00041040, 0x00040000, 0x10041000, 0x00001000,
|
|
|
463 0x00000040, 0x10040040, 0x00001000, 0x00041040,
|
|
|
464 0x10001000, 0x00000040, 0x10000040, 0x10040000,
|
|
|
465 0x10040040, 0x10000000, 0x00040000, 0x10001040,
|
|
|
466 0x00000000, 0x10041040, 0x00040040, 0x10000040,
|
|
|
467 0x10040000, 0x10001000, 0x10001040, 0x00000000,
|
|
|
468 0x10041040, 0x00041000, 0x00041000, 0x00001040,
|
|
|
469 0x00001040, 0x00040040, 0x10000000, 0x10041000
|
|
|
470 };
|
|
|
471
|
|
|
472 // Routines taken from other parts of the Acme utilities.
|
|
|
473
|
|
|
474 /// Squash bytes down to ints.
|
|
|
475 public static void squashBytesToInts( byte[] inBytes, int inOff, int[] outInts, int outOff, int intLen )
|
|
|
476 {
|
|
|
477 for ( int i = 0; i < intLen; ++i )
|
|
|
478 outInts[outOff + i] =
|
|
|
479 ( ( inBytes[inOff + i * 4 ] & 0xff ) << 24 ) |
|
|
|
480 ( ( inBytes[inOff + i * 4 + 1] & 0xff ) << 16 ) |
|
|
|
481 ( ( inBytes[inOff + i * 4 + 2] & 0xff ) << 8 ) |
|
|
|
482 ( inBytes[inOff + i * 4 + 3] & 0xff );
|
|
|
483 }
|
|
|
484
|
|
|
485 /// Spread ints into bytes.
|
|
|
486 public static void spreadIntsToBytes( int[] inInts, int inOff, byte[] outBytes, int outOff, int intLen )
|
|
|
487 {
|
|
|
488 for ( int i = 0; i < intLen; ++i )
|
|
|
489 {
|
|
|
490 outBytes[outOff + i * 4 ] = (byte) ( inInts[inOff + i] >>> 24 );
|
|
|
491 outBytes[outOff + i * 4 + 1] = (byte) ( inInts[inOff + i] >>> 16 );
|
|
|
492 outBytes[outOff + i * 4 + 2] = (byte) ( inInts[inOff + i] >>> 8 );
|
|
|
493 outBytes[outOff + i * 4 + 3] = (byte) inInts[inOff + i];
|
|
|
494 }
|
|
|
495 }
|
|
|
496 }
|
