/* Cast5.java -- 
   Copyright (C) 2003, 2006 Free Software Foundation, Inc.

This file is a part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.

GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
USA

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version.  */


package gnu.javax.crypto.cipher;

import gnu.java.security.Registry;
import gnu.java.security.util.Util;

import java.security.InvalidKeyException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;

/**
 * An implmenetation of the <code>CAST5</code> (a.k.a. CAST-128) algorithm,
 * as per <i>RFC-2144</i>, dated May 1997.
 * <p>
 * In this RFC, <i>Carlisle Adams</i> (the CA in CAST, ST stands for
 * <i>Stafford Tavares</i>) describes CAST5 as:
 * <blockquote>
 *    "...a DES-like Substitution-Permutation Network (SPN) cryptosystem which
 *    appears to have good resistance to differential cryptanalysis, linear
 *    cryptanalysis, and related-key cryptanalysis. This cipher also possesses
 *    a number of other desirable cryptographic properties, including avalanche,
 *    Strict Avalanche Criterion (SAC), Bit Independence Criterion (BIC), no
 *    complementation property, and an absence of weak and semi-weak keys."
 * </blockquote>
 * <p>
 * <code>CAST5</code> is a symmetric block cipher with a block-size of 8
 * bytes and a variable key-size of up to 128 bits. Its authors, and their
 * employer (Entrust Technologies, a Nortel majority-owned company), made it
 * available worldwide on a royalty-free basis for commercial and non-commercial
 * uses.
 * <p>
 * The <code>CAST5</code> encryption algorithm has been designed to allow a
 * key size that can vary from <code>40</code> bits to <code>128</code> bits,
 * in 8-bit increments (that is, the allowable key sizes are <code>40, 48, 56,
 * 64, ..., 112, 120,</code> and <code>128</code> bits. For variable keysize
 * operation, the specification is as follows:
 * <ol>
 *   <li>For key sizes up to and including <code>80</code> bits (i.e.,
 *    <code>40, 48, 56, 64, 72,</code> and <code>80</code> bits), the algorithm
 *    is exactly as specified but uses <code>12</code> rounds instead of
 *    <code>16</code>;</li>
 *   <li>For key sizes greater than <code>80</code> bits, the algorithm uses
 *    the full <code>16</code> rounds;</li>
 *   <li>For key sizes less than <code>128</code> bits, the key is padded with
 *    zero bytes (in the rightmost, or least significant, positions) out to
 *    <code>128</code> bits (since the <code>CAST5</code> key schedule assumes
 *    an input key of <code>128</code> bits).</li>
 * </ol>
 * <p>
 * References:
 * <ol>
 *    <li><a href="http://www.ietf.org/rfc/rfc2144.txt">The CAST-128 Encryption
 *    Algorithm</a>.<br>
 *    <a href="mailto:cadams@entrust.com">Carlisle Adams</a>.</li>
 * </ol>
 */
public class Cast5
    extends BaseCipher
{
  private static final int DEFAULT_BLOCK_SIZE = 8; // in bytes
  private static final int DEFAULT_KEY_SIZE = 5; // in bytes
  /**
   * KAT vector (from rfc-2144):
   * 40-bit  key         = 01 23 45 67 12
   *                     = 01 23 45 67 12 00 00 00 00 00 00 00 00 00 00 00
   *         plaintext   = 01 23 45 67 89 AB CD EF
   *         ciphertext  = 7A C8 16 D1 6E 9B 30 2E
   */
  private static final byte[] KAT_KEY = Util.toBytesFromString("0123456712");
  private static final byte[] KAT_PT = Util.toBytesFromString("0123456789ABCDEF");
  private static final byte[] KAT_CT = Util.toBytesFromString("7AC816D16E9B302E");
  /** caches the result of the correctness test, once executed. */
  private static Boolean valid;
  // CAST5 S-boxes
  private static final int[] S1 = {
      0x30FB40D4, 0x9FA0FF0B, 0x6BECCD2F, 0x3F258C7A, 0x1E213F2F, 0x9C004DD3,
      0x6003E540, 0xCF9FC949, 0xBFD4AF27, 0x88BBBDB5, 0xE2034090, 0x98D09675,
      0x6E63A0E0, 0x15C361D2, 0xC2E7661D, 0x22D4FF8E, 0x28683B6F, 0xC07FD059,
      0xFF2379C8, 0x775F50E2, 0x43C340D3, 0xDF2F8656, 0x887CA41A, 0xA2D2BD2D,
      0xA1C9E0D6, 0x346C4819, 0x61B76D87, 0x22540F2F, 0x2ABE32E1, 0xAA54166B,
      0x22568E3A, 0xA2D341D0, 0x66DB40C8, 0xA784392F, 0x004DFF2F, 0x2DB9D2DE,
      0x97943FAC, 0x4A97C1D8, 0x527644B7, 0xB5F437A7, 0xB82CBAEF, 0xD751D159,
      0x6FF7F0ED, 0x5A097A1F, 0x827B68D0, 0x90ECF52E, 0x22B0C054, 0xBC8E5935,
      0x4B6D2F7F, 0x50BB64A2, 0xD2664910, 0xBEE5812D, 0xB7332290, 0xE93B159F,
      0xB48EE411, 0x4BFF345D, 0xFD45C240, 0xAD31973F, 0xC4F6D02E, 0x55FC8165,
      0xD5B1CAAD, 0xA1AC2DAE, 0xA2D4B76D, 0xC19B0C50, 0x882240F2, 0x0C6E4F38,
      0xA4E4BFD7, 0x4F5BA272, 0x564C1D2F, 0xC59C5319, 0xB949E354, 0xB04669FE,
      0xB1B6AB8A, 0xC71358DD, 0x6385C545, 0x110F935D, 0x57538AD5, 0x6A390493,
      0xE63D37E0, 0x2A54F6B3, 0x3A787D5F, 0x6276A0B5, 0x19A6FCDF, 0x7A42206A,
      0x29F9D4D5, 0xF61B1891, 0xBB72275E, 0xAA508167, 0x38901091, 0xC6B505EB,
      0x84C7CB8C, 0x2AD75A0F, 0x874A1427, 0xA2D1936B, 0x2AD286AF, 0xAA56D291,
      0xD7894360, 0x425C750D, 0x93B39E26, 0x187184C9, 0x6C00B32D, 0x73E2BB14,
      0xA0BEBC3C, 0x54623779, 0x64459EAB, 0x3F328B82, 0x7718CF82, 0x59A2CEA6,
      0x04EE002E, 0x89FE78E6, 0x3FAB0950, 0x325FF6C2, 0x81383F05, 0x6963C5C8,
      0x76CB5AD6, 0xD49974C9, 0xCA180DCF, 0x380782D5, 0xC7FA5CF6, 0x8AC31511,
      0x35E79E13, 0x47DA91D0, 0xF40F9086, 0xA7E2419E, 0x31366241, 0x051EF495,
      0xAA573B04, 0x4A805D8D, 0x548300D0, 0x00322A3C, 0xBF64CDDF, 0xBA57A68E,
      0x75C6372B, 0x50AFD341, 0xA7C13275, 0x915A0BF5, 0x6B54BFAB, 0x2B0B1426,
      0xAB4CC9D7, 0x449CCD82, 0xF7FBF265, 0xAB85C5F3, 0x1B55DB94, 0xAAD4E324,
      0xCFA4BD3F, 0x2DEAA3E2, 0x9E204D02, 0xC8BD25AC, 0xEADF55B3, 0xD5BD9E98,
      0xE31231B2, 0x2AD5AD6C, 0x954329DE, 0xADBE4528, 0xD8710F69, 0xAA51C90F,
      0xAA786BF6, 0x22513F1E, 0xAA51A79B, 0x2AD344CC, 0x7B5A41F0, 0xD37CFBAD,
      0x1B069505, 0x41ECE491, 0xB4C332E6, 0x032268D4, 0xC9600ACC, 0xCE387E6D,
      0xBF6BB16C, 0x6A70FB78, 0x0D03D9C9, 0xD4DF39DE, 0xE01063DA, 0x4736F464,
      0x5AD328D8, 0xB347CC96, 0x75BB0FC3, 0x98511BFB, 0x4FFBCC35, 0xB58BCF6A,
      0xE11F0ABC, 0xBFC5FE4A, 0xA70AEC10, 0xAC39570A, 0x3F04442F, 0x6188B153,
      0xE0397A2E, 0x5727CB79, 0x9CEB418F, 0x1CACD68D, 0x2AD37C96, 0x0175CB9D,
      0xC69DFF09, 0xC75B65F0, 0xD9DB40D8, 0xEC0E7779, 0x4744EAD4, 0xB11C3274,
      0xDD24CB9E, 0x7E1C54BD, 0xF01144F9, 0xD2240EB1, 0x9675B3FD, 0xA3AC3755,
      0xD47C27AF, 0x51C85F4D, 0x56907596, 0xA5BB15E6, 0x580304F0, 0xCA042CF1,
      0x011A37EA, 0x8DBFAADB, 0x35BA3E4A, 0x3526FFA0, 0xC37B4D09, 0xBC306ED9,
      0x98A52666, 0x5648F725, 0xFF5E569D, 0x0CED63D0, 0x7C63B2CF, 0x700B45E1,
      0xD5EA50F1, 0x85A92872, 0xAF1FBDA7, 0xD4234870, 0xA7870BF3, 0x2D3B4D79,
      0x42E04198, 0x0CD0EDE7, 0x26470DB8, 0xF881814C, 0x474D6AD7, 0x7C0C5E5C,
      0xD1231959, 0x381B7298, 0xF5D2F4DB, 0xAB838653, 0x6E2F1E23, 0x83719C9E,
      0xBD91E046, 0x9A56456E, 0xDC39200C, 0x20C8C571, 0x962BDA1C, 0xE1E696FF,
      0xB141AB08, 0x7CCA89B9, 0x1A69E783, 0x02CC4843, 0xA2F7C579, 0x429EF47D,
      0x427B169C, 0x5AC9F049, 0xDD8F0F00, 0x5C8165BF };
  private static final int[] S2 = {
      0x1F201094, 0xEF0BA75B, 0x69E3CF7E, 0x393F4380, 0xFE61CF7A, 0xEEC5207A,
      0x55889C94, 0x72FC0651, 0xADA7EF79, 0x4E1D7235, 0xD55A63CE, 0xDE0436BA,
      0x99C430EF, 0x5F0C0794, 0x18DCDB7D, 0xA1D6EFF3, 0xA0B52F7B, 0x59E83605,
      0xEE15B094, 0xE9FFD909, 0xDC440086, 0xEF944459, 0xBA83CCB3, 0xE0C3CDFB,
      0xD1DA4181, 0x3B092AB1, 0xF997F1C1, 0xA5E6CF7B, 0x01420DDB, 0xE4E7EF5B,
      0x25A1FF41, 0xE180F806, 0x1FC41080, 0x179BEE7A, 0xD37AC6A9, 0xFE5830A4,
      0x98DE8B7F, 0x77E83F4E, 0x79929269, 0x24FA9F7B, 0xE113C85B, 0xACC40083,
      0xD7503525, 0xF7EA615F, 0x62143154, 0x0D554B63, 0x5D681121, 0xC866C359,
      0x3D63CF73, 0xCEE234C0, 0xD4D87E87, 0x5C672B21, 0x071F6181, 0x39F7627F,
      0x361E3084, 0xE4EB573B, 0x602F64A4, 0xD63ACD9C, 0x1BBC4635, 0x9E81032D,
      0x2701F50C, 0x99847AB4, 0xA0E3DF79, 0xBA6CF38C, 0x10843094, 0x2537A95E,
      0xF46F6FFE, 0xA1FF3B1F, 0x208CFB6A, 0x8F458C74, 0xD9E0A227, 0x4EC73A34,
      0xFC884F69, 0x3E4DE8DF, 0xEF0E0088, 0x3559648D, 0x8A45388C, 0x1D804366,
      0x721D9BFD, 0xA58684BB, 0xE8256333, 0x844E8212, 0x128D8098, 0xFED33FB4,
      0xCE280AE1, 0x27E19BA5, 0xD5A6C252, 0xE49754BD, 0xC5D655DD, 0xEB667064,
      0x77840B4D, 0xA1B6A801, 0x84DB26A9, 0xE0B56714, 0x21F043B7, 0xE5D05860,
      0x54F03084, 0x066FF472, 0xA31AA153, 0xDADC4755, 0xB5625DBF, 0x68561BE6,
      0x83CA6B94, 0x2D6ED23B, 0xECCF01DB, 0xA6D3D0BA, 0xB6803D5C, 0xAF77A709,
      0x33B4A34C, 0x397BC8D6, 0x5EE22B95, 0x5F0E5304, 0x81ED6F61, 0x20E74364,
      0xB45E1378, 0xDE18639B, 0x881CA122, 0xB96726D1, 0x8049A7E8, 0x22B7DA7B,
      0x5E552D25, 0x5272D237, 0x79D2951C, 0xC60D894C, 0x488CB402, 0x1BA4FE5B,
      0xA4B09F6B, 0x1CA815CF, 0xA20C3005, 0x8871DF63, 0xB9DE2FCB, 0x0CC6C9E9,
      0x0BEEFF53, 0xE3214517, 0xB4542835, 0x9F63293C, 0xEE41E729, 0x6E1D2D7C,
      0x50045286, 0x1E6685F3, 0xF33401C6, 0x30A22C95, 0x31A70850, 0x60930F13,
      0x73F98417, 0xA1269859, 0xEC645C44, 0x52C877A9, 0xCDFF33A6, 0xA02B1741,
      0x7CBAD9A2, 0x2180036F, 0x50D99C08, 0xCB3F4861, 0xC26BD765, 0x64A3F6AB,
      0x80342676, 0x25A75E7B, 0xE4E6D1FC, 0x20C710E6, 0xCDF0B680, 0x17844D3B,
      0x31EEF84D, 0x7E0824E4, 0x2CCB49EB, 0x846A3BAE, 0x8FF77888, 0xEE5D60F6,
      0x7AF75673, 0x2FDD5CDB, 0xA11631C1, 0x30F66F43, 0xB3FAEC54, 0x157FD7FA,
      0xEF8579CC, 0xD152DE58, 0xDB2FFD5E, 0x8F32CE19, 0x306AF97A, 0x02F03EF8,
      0x99319AD5, 0xC242FA0F, 0xA7E3EBB0, 0xC68E4906, 0xB8DA230C, 0x80823028,
      0xDCDEF3C8, 0xD35FB171, 0x088A1BC8, 0xBEC0C560, 0x61A3C9E8, 0xBCA8F54D,
      0xC72FEFFA, 0x22822E99, 0x82C570B4, 0xD8D94E89, 0x8B1C34BC, 0x301E16E6,
      0x273BE979, 0xB0FFEAA6, 0x61D9B8C6, 0x00B24869, 0xB7FFCE3F, 0x08DC283B,
      0x43DAF65A, 0xF7E19798, 0x7619B72F, 0x8F1C9BA4, 0xDC8637A0, 0x16A7D3B1,
      0x9FC393B7, 0xA7136EEB, 0xC6BCC63E, 0x1A513742, 0xEF6828BC, 0x520365D6,
      0x2D6A77AB, 0x3527ED4B, 0x821FD216, 0x095C6E2E, 0xDB92F2FB, 0x5EEA29CB,
      0x145892F5, 0x91584F7F, 0x5483697B, 0x2667A8CC, 0x85196048, 0x8C4BACEA,
      0x833860D4, 0x0D23E0F9, 0x6C387E8A, 0x0AE6D249, 0xB284600C, 0xD835731D,
      0xDCB1C647, 0xAC4C56EA, 0x3EBD81B3, 0x230EABB0, 0x6438BC87, 0xF0B5B1FA,
      0x8F5EA2B3, 0xFC184642, 0x0A036B7A, 0x4FB089BD, 0x649DA589, 0xA345415E,
      0x5C038323, 0x3E5D3BB9, 0x43D79572, 0x7E6DD07C, 0x06DFDF1E, 0x6C6CC4EF,
      0x7160A539, 0x73BFBE70, 0x83877605, 0x4523ECF1 };
  private static final int[] S3 = {
      0x8DEFC240, 0x25FA5D9F, 0xEB903DBF, 0xE810C907, 0x47607FFF, 0x369FE44B,
      0x8C1FC644, 0xAECECA90, 0xBEB1F9BF, 0xEEFBCAEA, 0xE8CF1950, 0x51DF07AE,
      0x920E8806, 0xF0AD0548, 0xE13C8D83, 0x927010D5, 0x11107D9F, 0x07647DB9,
      0xB2E3E4D4, 0x3D4F285E, 0xB9AFA820, 0xFADE82E0, 0xA067268B, 0x8272792E,
      0x553FB2C0, 0x489AE22B, 0xD4EF9794, 0x125E3FBC, 0x21FFFCEE, 0x825B1BFD,
      0x9255C5ED, 0x1257A240, 0x4E1A8302, 0xBAE07FFF, 0x528246E7, 0x8E57140E,
      0x3373F7BF, 0x8C9F8188, 0xA6FC4EE8, 0xC982B5A5, 0xA8C01DB7, 0x579FC264,
      0x67094F31, 0xF2BD3F5F, 0x40FFF7C1, 0x1FB78DFC, 0x8E6BD2C1, 0x437BE59B,
      0x99B03DBF, 0xB5DBC64B, 0x638DC0E6, 0x55819D99, 0xA197C81C, 0x4A012D6E,
      0xC5884A28, 0xCCC36F71, 0xB843C213, 0x6C0743F1, 0x8309893C, 0x0FEDDD5F,
      0x2F7FE850, 0xD7C07F7E, 0x02507FBF, 0x5AFB9A04, 0xA747D2D0, 0x1651192E,
      0xAF70BF3E, 0x58C31380, 0x5F98302E, 0x727CC3C4, 0x0A0FB402, 0x0F7FEF82,
      0x8C96FDAD, 0x5D2C2AAE, 0x8EE99A49, 0x50DA88B8, 0x8427F4A0, 0x1EAC5790,
      0x796FB449, 0x8252DC15, 0xEFBD7D9B, 0xA672597D, 0xADA840D8, 0x45F54504,
      0xFA5D7403, 0xE83EC305, 0x4F91751A, 0x925669C2, 0x23EFE941, 0xA903F12E,
      0x60270DF2, 0x0276E4B6, 0x94FD6574, 0x927985B2, 0x8276DBCB, 0x02778176,
      0xF8AF918D, 0x4E48F79E, 0x8F616DDF, 0xE29D840E, 0x842F7D83, 0x340CE5C8,
      0x96BBB682, 0x93B4B148, 0xEF303CAB, 0x984FAF28, 0x779FAF9B, 0x92DC560D,
      0x224D1E20, 0x8437AA88, 0x7D29DC96, 0x2756D3DC, 0x8B907CEE, 0xB51FD240,
      0xE7C07CE3, 0xE566B4A1, 0xC3E9615E, 0x3CF8209D, 0x6094D1E3, 0xCD9CA341,
      0x5C76460E, 0x00EA983B, 0xD4D67881, 0xFD47572C, 0xF76CEDD9, 0xBDA8229C,
      0x127DADAA, 0x438A074E, 0x1F97C090, 0x081BDB8A, 0x93A07EBE, 0xB938CA15,
      0x97B03CFF, 0x3DC2C0F8, 0x8D1AB2EC, 0x64380E51, 0x68CC7BFB, 0xD90F2788,
      0x12490181, 0x5DE5FFD4, 0xDD7EF86A, 0x76A2E214, 0xB9A40368, 0x925D958F,
      0x4B39FFFA, 0xBA39AEE9, 0xA4FFD30B, 0xFAF7933B, 0x6D498623, 0x193CBCFA,
      0x27627545, 0x825CF47A, 0x61BD8BA0, 0xD11E42D1, 0xCEAD04F4, 0x127EA392,
      0x10428DB7, 0x8272A972, 0x9270C4A8, 0x127DE50B, 0x285BA1C8, 0x3C62F44F,
      0x35C0EAA5, 0xE805D231, 0x428929FB, 0xB4FCDF82, 0x4FB66A53, 0x0E7DC15B,
      0x1F081FAB, 0x108618AE, 0xFCFD086D, 0xF9FF2889, 0x694BCC11, 0x236A5CAE,
      0x12DECA4D, 0x2C3F8CC5, 0xD2D02DFE, 0xF8EF5896, 0xE4CF52DA, 0x95155B67,
      0x494A488C, 0xB9B6A80C, 0x5C8F82BC, 0x89D36B45, 0x3A609437, 0xEC00C9A9,
      0x44715253, 0x0A874B49, 0xD773BC40, 0x7C34671C, 0x02717EF6, 0x4FEB5536,
      0xA2D02FFF, 0xD2BF60C4, 0xD43F03C0, 0x50B4EF6D, 0x07478CD1, 0x006E1888,
      0xA2E53F55, 0xB9E6D4BC, 0xA2048016, 0x97573833, 0xD7207D67, 0xDE0F8F3D,
      0x72F87B33, 0xABCC4F33, 0x7688C55D, 0x7B00A6B0, 0x947B0001, 0x570075D2,
      0xF9BB88F8, 0x8942019E, 0x4264A5FF, 0x856302E0, 0x72DBD92B, 0xEE971B69,
      0x6EA22FDE, 0x5F08AE2B, 0xAF7A616D, 0xE5C98767, 0xCF1FEBD2, 0x61EFC8C2,
      0xF1AC2571, 0xCC8239C2, 0x67214CB8, 0xB1E583D1, 0xB7DC3E62, 0x7F10BDCE,
      0xF90A5C38, 0x0FF0443D, 0x606E6DC6, 0x60543A49, 0x5727C148, 0x2BE98A1D,
      0x8AB41738, 0x20E1BE24, 0xAF96DA0F, 0x68458425, 0x99833BE5, 0x600D457D,
      0x282F9350, 0x8334B362, 0xD91D1120, 0x2B6D8DA0, 0x642B1E31, 0x9C305A00,
      0x52BCE688, 0x1B03588A, 0xF7BAEFD5, 0x4142ED9C, 0xA4315C11, 0x83323EC5,
      0xDFEF4636, 0xA133C501, 0xE9D3531C, 0xEE353783 };
  private static final int[] S4 = {
      0x9DB30420, 0x1FB6E9DE, 0xA7BE7BEF, 0xD273A298, 0x4A4F7BDB, 0x64AD8C57,
      0x85510443, 0xFA020ED1, 0x7E287AFF, 0xE60FB663, 0x095F35A1, 0x79EBF120,
      0xFD059D43, 0x6497B7B1, 0xF3641F63, 0x241E4ADF, 0x28147F5F, 0x4FA2B8CD,
      0xC9430040, 0x0CC32220, 0xFDD30B30, 0xC0A5374F, 0x1D2D00D9, 0x24147B15,
      0xEE4D111A, 0x0FCA5167, 0x71FF904C, 0x2D195FFE, 0x1A05645F, 0x0C13FEFE,
      0x081B08CA, 0x05170121, 0x80530100, 0xE83E5EFE, 0xAC9AF4F8, 0x7FE72701,
      0xD2B8EE5F, 0x06DF4261, 0xBB9E9B8A, 0x7293EA25, 0xCE84FFDF, 0xF5718801,
      0x3DD64B04, 0xA26F263B, 0x7ED48400, 0x547EEBE6, 0x446D4CA0, 0x6CF3D6F5,
      0x2649ABDF, 0xAEA0C7F5, 0x36338CC1, 0x503F7E93, 0xD3772061, 0x11B638E1,
      0x72500E03, 0xF80EB2BB, 0xABE0502E, 0xEC8D77DE, 0x57971E81, 0xE14F6746,
      0xC9335400, 0x6920318F, 0x081DBB99, 0xFFC304A5, 0x4D351805, 0x7F3D5CE3,
      0xA6C866C6, 0x5D5BCCA9, 0xDAEC6FEA, 0x9F926F91, 0x9F46222F, 0x3991467D,
      0xA5BF6D8E, 0x1143C44F, 0x43958302, 0xD0214EEB, 0x022083B8, 0x3FB6180C,
      0x18F8931E, 0x281658E6, 0x26486E3E, 0x8BD78A70, 0x7477E4C1, 0xB506E07C,
      0xF32D0A25, 0x79098B02, 0xE4EABB81, 0x28123B23, 0x69DEAD38, 0x1574CA16,
      0xDF871B62, 0x211C40B7, 0xA51A9EF9, 0x0014377B, 0x041E8AC8, 0x09114003,
      0xBD59E4D2, 0xE3D156D5, 0x4FE876D5, 0x2F91A340, 0x557BE8DE, 0x00EAE4A7,
      0x0CE5C2EC, 0x4DB4BBA6, 0xE756BDFF, 0xDD3369AC, 0xEC17B035, 0x06572327,
      0x99AFC8B0, 0x56C8C391, 0x6B65811C, 0x5E146119, 0x6E85CB75, 0xBE07C002,
      0xC2325577, 0x893FF4EC, 0x5BBFC92D, 0xD0EC3B25, 0xB7801AB7, 0x8D6D3B24,
      0x20C763EF, 0xC366A5FC, 0x9C382880, 0x0ACE3205, 0xAAC9548A, 0xECA1D7C7,
      0x041AFA32, 0x1D16625A, 0x6701902C, 0x9B757A54, 0x31D477F7, 0x9126B031,
      0x36CC6FDB, 0xC70B8B46, 0xD9E66A48, 0x56E55A79, 0x026A4CEB, 0x52437EFF,
      0x2F8F76B4, 0x0DF980A5, 0x8674CDE3, 0xEDDA04EB, 0x17A9BE04, 0x2C18F4DF,
      0xB7747F9D, 0xAB2AF7B4, 0xEFC34D20, 0x2E096B7C, 0x1741A254, 0xE5B6A035,
      0x213D42F6, 0x2C1C7C26, 0x61C2F50F, 0x6552DAF9, 0xD2C231F8, 0x25130F69,
      0xD8167FA2, 0x0418F2C8, 0x001A96A6, 0x0D1526AB, 0x63315C21, 0x5E0A72EC,
      0x49BAFEFD, 0x187908D9, 0x8D0DBD86, 0x311170A7, 0x3E9B640C, 0xCC3E10D7,
      0xD5CAD3B6, 0x0CAEC388, 0xF73001E1, 0x6C728AFF, 0x71EAE2A1, 0x1F9AF36E,
      0xCFCBD12F, 0xC1DE8417, 0xAC07BE6B, 0xCB44A1D8, 0x8B9B0F56, 0x013988C3,
      0xB1C52FCA, 0xB4BE31CD, 0xD8782806, 0x12A3A4E2, 0x6F7DE532, 0x58FD7EB6,
      0xD01EE900, 0x24ADFFC2, 0xF4990FC5, 0x9711AAC5, 0x001D7B95, 0x82E5E7D2,
      0x109873F6, 0x00613096, 0xC32D9521, 0xADA121FF, 0x29908415, 0x7FBB977F,
      0xAF9EB3DB, 0x29C9ED2A, 0x5CE2A465, 0xA730F32C, 0xD0AA3FE8, 0x8A5CC091,
      0xD49E2CE7, 0x0CE454A9, 0xD60ACD86, 0x015F1919, 0x77079103, 0xDEA03AF6,
      0x78A8565E, 0xDEE356DF, 0x21F05CBE, 0x8B75E387, 0xB3C50651, 0xB8A5C3EF,
      0xD8EEB6D2, 0xE523BE77, 0xC2154529, 0x2F69EFDF, 0xAFE67AFB, 0xF470C4B2,
      0xF3E0EB5B, 0xD6CC9876, 0x39E4460C, 0x1FDA8538, 0x1987832F, 0xCA007367,
      0xA99144F8, 0x296B299E, 0x492FC295, 0x9266BEAB, 0xB5676E69, 0x9BD3DDDA,
      0xDF7E052F, 0xDB25701C, 0x1B5E51EE, 0xF65324E6, 0x6AFCE36C, 0x0316CC04,
      0x8644213E, 0xB7DC59D0, 0x7965291F, 0xCCD6FD43, 0x41823979, 0x932BCDF6,
      0xB657C34D, 0x4EDFD282, 0x7AE5290C, 0x3CB9536B, 0x851E20FE, 0x9833557E,
      0x13ECF0B0, 0xD3FFB372, 0x3F85C5C1, 0x0AEF7ED2 };
  private static final int[] S5 = {
      0x7EC90C04, 0x2C6E74B9, 0x9B0E66DF, 0xA6337911, 0xB86A7FFF, 0x1DD358F5,
      0x44DD9D44, 0x1731167F, 0x08FBF1FA, 0xE7F511CC, 0xD2051B00, 0x735ABA00,
      0x2AB722D8, 0x386381CB, 0xACF6243A, 0x69BEFD7A, 0xE6A2E77F, 0xF0C720CD,
      0xC4494816, 0xCCF5C180, 0x38851640, 0x15B0A848, 0xE68B18CB, 0x4CAADEFF,
      0x5F480A01, 0x0412B2AA, 0x259814FC, 0x41D0EFE2, 0x4E40B48D, 0x248EB6FB,
      0x8DBA1CFE, 0x41A99B02, 0x1A550A04, 0xBA8F65CB, 0x7251F4E7, 0x95A51725,
      0xC106ECD7, 0x97A5980A, 0xC539B9AA, 0x4D79FE6A, 0xF2F3F763, 0x68AF8040,
      0xED0C9E56, 0x11B4958B, 0xE1EB5A88, 0x8709E6B0, 0xD7E07156, 0x4E29FEA7,
      0x6366E52D, 0x02D1C000, 0xC4AC8E05, 0x9377F571, 0x0C05372A, 0x578535F2,
      0x2261BE02, 0xD642A0C9, 0xDF13A280, 0x74B55BD2, 0x682199C0, 0xD421E5EC,
      0x53FB3CE8, 0xC8ADEDB3, 0x28A87FC9, 0x3D959981, 0x5C1FF900, 0xFE38D399,
      0x0C4EFF0B, 0x062407EA, 0xAA2F4FB1, 0x4FB96976, 0x90C79505, 0xB0A8A774,
      0xEF55A1FF, 0xE59CA2C2, 0xA6B62D27, 0xE66A4263, 0xDF65001F, 0x0EC50966,
      0xDFDD55BC, 0x29DE0655, 0x911E739A, 0x17AF8975, 0x32C7911C, 0x89F89468,
      0x0D01E980, 0x524755F4, 0x03B63CC9, 0x0CC844B2, 0xBCF3F0AA, 0x87AC36E9,
      0xE53A7426, 0x01B3D82B, 0x1A9E7449, 0x64EE2D7E, 0xCDDBB1DA, 0x01C94910,
      0xB868BF80, 0x0D26F3FD, 0x9342EDE7, 0x04A5C284, 0x636737B6, 0x50F5B616,
      0xF24766E3, 0x8ECA36C1, 0x136E05DB, 0xFEF18391, 0xFB887A37, 0xD6E7F7D4,
      0xC7FB7DC9, 0x3063FCDF, 0xB6F589DE, 0xEC2941DA, 0x26E46695, 0xB7566419,
      0xF654EFC5, 0xD08D58B7, 0x48925401, 0xC1BACB7F, 0xE5FF550F, 0xB6083049,
      0x5BB5D0E8, 0x87D72E5A, 0xAB6A6EE1, 0x223A66CE, 0xC62BF3CD, 0x9E0885F9,
      0x68CB3E47, 0x086C010F, 0xA21DE820, 0xD18B69DE, 0xF3F65777, 0xFA02C3F6,
      0x407EDAC3, 0xCBB3D550, 0x1793084D, 0xB0D70EBA, 0x0AB378D5, 0xD951FB0C,
      0xDED7DA56, 0x4124BBE4, 0x94CA0B56, 0x0F5755D1, 0xE0E1E56E, 0x6184B5BE,
      0x580A249F, 0x94F74BC0, 0xE327888E, 0x9F7B5561, 0xC3DC0280, 0x05687715,
      0x646C6BD7, 0x44904DB3, 0x66B4F0A3, 0xC0F1648A, 0x697ED5AF, 0x49E92FF6,
      0x309E374F, 0x2CB6356A, 0x85808573, 0x4991F840, 0x76F0AE02, 0x083BE84D,
      0x28421C9A, 0x44489406, 0x736E4CB8, 0xC1092910, 0x8BC95FC6, 0x7D869CF4,
      0x134F616F, 0x2E77118D, 0xB31B2BE1, 0xAA90B472, 0x3CA5D717, 0x7D161BBA,
      0x9CAD9010, 0xAF462BA2, 0x9FE459D2, 0x45D34559, 0xD9F2DA13, 0xDBC65487,
      0xF3E4F94E, 0x176D486F, 0x097C13EA, 0x631DA5C7, 0x445F7382, 0x175683F4,
      0xCDC66A97, 0x70BE0288, 0xB3CDCF72, 0x6E5DD2F3, 0x20936079, 0x459B80A5,
      0xBE60E2DB, 0xA9C23101, 0xEBA5315C, 0x224E42F2, 0x1C5C1572, 0xF6721B2C,
      0x1AD2FFF3, 0x8C25404E, 0x324ED72F, 0x4067B7FD, 0x0523138E, 0x5CA3BC78,
      0xDC0FD66E, 0x75922283, 0x784D6B17, 0x58EBB16E, 0x44094F85, 0x3F481D87,
      0xFCFEAE7B, 0x77B5FF76, 0x8C2302BF, 0xAAF47556, 0x5F46B02A, 0x2B092801,
      0x3D38F5F7, 0x0CA81F36, 0x52AF4A8A, 0x66D5E7C0, 0xDF3B0874, 0x95055110,
      0x1B5AD7A8, 0xF61ED5AD, 0x6CF6E479, 0x20758184, 0xD0CEFA65, 0x88F7BE58,
      0x4A046826, 0x0FF6F8F3, 0xA09C7F70, 0x5346ABA0, 0x5CE96C28, 0xE176EDA3,
      0x6BAC307F, 0x376829D2, 0x85360FA9, 0x17E3FE2A, 0x24B79767, 0xF5A96B20,
      0xD6CD2595, 0x68FF1EBF, 0x7555442C, 0xF19F06BE, 0xF9E0659A, 0xEEB9491D,
      0x34010718, 0xBB30CAB8, 0xE822FE15, 0x88570983, 0x750E6249, 0xDA627E55,
      0x5E76FFA8, 0xB1534546, 0x6D47DE08, 0xEFE9E7D4 };
  private static final int[] S6 = {
      0xF6FA8F9D, 0x2CAC6CE1, 0x4CA34867, 0xE2337F7C, 0x95DB08E7, 0x016843B4,
      0xECED5CBC, 0x325553AC, 0xBF9F0960, 0xDFA1E2ED, 0x83F0579D, 0x63ED86B9,
      0x1AB6A6B8, 0xDE5EBE39, 0xF38FF732, 0x8989B138, 0x33F14961, 0xC01937BD,
      0xF506C6DA, 0xE4625E7E, 0xA308EA99, 0x4E23E33C, 0x79CBD7CC, 0x48A14367,
      0xA3149619, 0xFEC94BD5, 0xA114174A, 0xEAA01866, 0xA084DB2D, 0x09A8486F,
      0xA888614A, 0x2900AF98, 0x01665991, 0xE1992863, 0xC8F30C60, 0x2E78EF3C,
      0xD0D51932, 0xCF0FEC14, 0xF7CA07D2, 0xD0A82072, 0xFD41197E, 0x9305A6B0,
      0xE86BE3DA, 0x74BED3CD, 0x372DA53C, 0x4C7F4448, 0xDAB5D440, 0x6DBA0EC3,
      0x083919A7, 0x9FBAEED9, 0x49DBCFB0, 0x4E670C53, 0x5C3D9C01, 0x64BDB941,
      0x2C0E636A, 0xBA7DD9CD, 0xEA6F7388, 0xE70BC762, 0x35F29ADB, 0x5C4CDD8D,
      0xF0D48D8C, 0xB88153E2, 0x08A19866, 0x1AE2EAC8, 0x284CAF89, 0xAA928223,
      0x9334BE53, 0x3B3A21BF, 0x16434BE3, 0x9AEA3906, 0xEFE8C36E, 0xF890CDD9,
      0x80226DAE, 0xC340A4A3, 0xDF7E9C09, 0xA694A807, 0x5B7C5ECC, 0x221DB3A6,
      0x9A69A02F, 0x68818A54, 0xCEB2296F, 0x53C0843A, 0xFE893655, 0x25BFE68A,
      0xB4628ABC, 0xCF222EBF, 0x25AC6F48, 0xA9A99387, 0x53BDDB65, 0xE76FFBE7,
      0xE967FD78, 0x0BA93563, 0x8E342BC1, 0xE8A11BE9, 0x4980740D, 0xC8087DFC,
      0x8DE4BF99, 0xA11101A0, 0x7FD37975, 0xDA5A26C0, 0xE81F994F, 0x9528CD89,
      0xFD339FED, 0xB87834BF, 0x5F04456D, 0x22258698, 0xC9C4C83B, 0x2DC156BE,
      0x4F628DAA, 0x57F55EC5, 0xE2220ABE, 0xD2916EBF, 0x4EC75B95, 0x24F2C3C0,
      0x42D15D99, 0xCD0D7FA0, 0x7B6E27FF, 0xA8DC8AF0, 0x7345C106, 0xF41E232F,
      0x35162386, 0xE6EA8926, 0x3333B094, 0x157EC6F2, 0x372B74AF, 0x692573E4,
      0xE9A9D848, 0xF3160289, 0x3A62EF1D, 0xA787E238, 0xF3A5F676, 0x74364853,
      0x20951063, 0x4576698D, 0xB6FAD407, 0x592AF950, 0x36F73523, 0x4CFB6E87,
      0x7DA4CEC0, 0x6C152DAA, 0xCB0396A8, 0xC50DFE5D, 0xFCD707AB, 0x0921C42F,
      0x89DFF0BB, 0x5FE2BE78, 0x448F4F33, 0x754613C9, 0x2B05D08D, 0x48B9D585,
      0xDC049441, 0xC8098F9B, 0x7DEDE786, 0xC39A3373, 0x42410005, 0x6A091751,
      0x0EF3C8A6, 0x890072D6, 0x28207682, 0xA9A9F7BE, 0xBF32679D, 0xD45B5B75,
      0xB353FD00, 0xCBB0E358, 0x830F220A, 0x1F8FB214, 0xD372CF08, 0xCC3C4A13,
      0x8CF63166, 0x061C87BE, 0x88C98F88, 0x6062E397, 0x47CF8E7A, 0xB6C85283,
      0x3CC2ACFB, 0x3FC06976, 0x4E8F0252, 0x64D8314D, 0xDA3870E3, 0x1E665459,
      0xC10908F0, 0x513021A5, 0x6C5B68B7, 0x822F8AA0, 0x3007CD3E, 0x74719EEF,
      0xDC872681, 0x073340D4, 0x7E432FD9, 0x0C5EC241, 0x8809286C, 0xF592D891,
      0x08A930F6, 0x957EF305, 0xB7FBFFBD, 0xC266E96F, 0x6FE4AC98, 0xB173ECC0,
      0xBC60B42A, 0x953498DA, 0xFBA1AE12, 0x2D4BD736, 0x0F25FAAB, 0xA4F3FCEB,
      0xE2969123, 0x257F0C3D, 0x9348AF49, 0x361400BC, 0xE8816F4A, 0x3814F200,
      0xA3F94043, 0x9C7A54C2, 0xBC704F57, 0xDA41E7F9, 0xC25AD33A, 0x54F4A084,
      0xB17F5505, 0x59357CBE, 0xEDBD15C8, 0x7F97C5AB, 0xBA5AC7B5, 0xB6F6DEAF,
      0x3A479C3A, 0x5302DA25, 0x653D7E6A, 0x54268D49, 0x51A477EA, 0x5017D55B,
      0xD7D25D88, 0x44136C76, 0x0404A8C8, 0xB8E5A121, 0xB81A928A, 0x60ED5869,
      0x97C55B96, 0xEAEC991B, 0x29935913, 0x01FDB7F1, 0x088E8DFA, 0x9AB6F6F5,
      0x3B4CBF9F, 0x4A5DE3AB, 0xE6051D35, 0xA0E1D855, 0xD36B4CF1, 0xF544EDEB,
      0xB0E93524, 0xBEBB8FBD, 0xA2D762CF, 0x49C92F54, 0x38B5F331, 0x7128A454,
      0x48392905, 0xA65B1DB8, 0x851C97BD, 0xD675CF2F };
  private static final int[] S7 = {
      0x85E04019, 0x332BF567, 0x662DBFFF, 0xCFC65693, 0x2A8D7F6F, 0xAB9BC912,
      0xDE6008A1, 0x2028DA1F, 0x0227BCE7, 0x4D642916, 0x18FAC300, 0x50F18B82,
      0x2CB2CB11, 0xB232E75C, 0x4B3695F2, 0xB28707DE, 0xA05FBCF6, 0xCD4181E9,
      0xE150210C, 0xE24EF1BD, 0xB168C381, 0xFDE4E789, 0x5C79B0D8, 0x1E8BFD43,
      0x4D495001, 0x38BE4341, 0x913CEE1D, 0x92A79C3F, 0x089766BE, 0xBAEEADF4,
      0x1286BECF, 0xB6EACB19, 0x2660C200, 0x7565BDE4, 0x64241F7A, 0x8248DCA9,
      0xC3B3AD66, 0x28136086, 0x0BD8DFA8, 0x356D1CF2, 0x107789BE, 0xB3B2E9CE,
      0x0502AA8F, 0x0BC0351E, 0x166BF52A, 0xEB12FF82, 0xE3486911, 0xD34D7516,
      0x4E7B3AFF, 0x5F43671B, 0x9CF6E037, 0x4981AC83, 0x334266CE, 0x8C9341B7,
      0xD0D854C0, 0xCB3A6C88, 0x47BC2829, 0x4725BA37, 0xA66AD22B, 0x7AD61F1E,
      0x0C5CBAFA, 0x4437F107, 0xB6E79962, 0x42D2D816, 0x0A961288, 0xE1A5C06E,
      0x13749E67, 0x72FC081A, 0xB1D139F7, 0xF9583745, 0xCF19DF58, 0xBEC3F756,
      0xC06EBA30, 0x07211B24, 0x45C28829, 0xC95E317F, 0xBC8EC511, 0x38BC46E9,
      0xC6E6FA14, 0xBAE8584A, 0xAD4EBC46, 0x468F508B, 0x7829435F, 0xF124183B,
      0x821DBA9F, 0xAFF60FF4, 0xEA2C4E6D, 0x16E39264, 0x92544A8B, 0x009B4FC3,
      0xABA68CED, 0x9AC96F78, 0x06A5B79A, 0xB2856E6E, 0x1AEC3CA9, 0xBE838688,
      0x0E0804E9, 0x55F1BE56, 0xE7E5363B, 0xB3A1F25D, 0xF7DEBB85, 0x61FE033C,
      0x16746233, 0x3C034C28, 0xDA6D0C74, 0x79AAC56C, 0x3CE4E1AD, 0x51F0C802,
      0x98F8F35A, 0x1626A49F, 0xEED82B29, 0x1D382FE3, 0x0C4FB99A, 0xBB325778,
      0x3EC6D97B, 0x6E77A6A9, 0xCB658B5C, 0xD45230C7, 0x2BD1408B, 0x60C03EB7,
      0xB9068D78, 0xA33754F4, 0xF430C87D, 0xC8A71302, 0xB96D8C32, 0xEBD4E7BE,
      0xBE8B9D2D, 0x7979FB06, 0xE7225308, 0x8B75CF77, 0x11EF8DA4, 0xE083C858,
      0x8D6B786F, 0x5A6317A6, 0xFA5CF7A0, 0x5DDA0033, 0xF28EBFB0, 0xF5B9C310,
      0xA0EAC280, 0x08B9767A, 0xA3D9D2B0, 0x79D34217, 0x021A718D, 0x9AC6336A,
      0x2711FD60, 0x438050E3, 0x069908A8, 0x3D7FEDC4, 0x826D2BEF, 0x4EEB8476,
      0x488DCF25, 0x36C9D566, 0x28E74E41, 0xC2610ACA, 0x3D49A9CF, 0xBAE3B9DF,
      0xB65F8DE6, 0x92AEAF64, 0x3AC7D5E6, 0x9EA80509, 0xF22B017D, 0xA4173F70,
      0xDD1E16C3, 0x15E0D7F9, 0x50B1B887, 0x2B9F4FD5, 0x625ABA82, 0x6A017962,
      0x2EC01B9C, 0x15488AA9, 0xD716E740, 0x40055A2C, 0x93D29A22, 0xE32DBF9A,
      0x058745B9, 0x3453DC1E, 0xD699296E, 0x496CFF6F, 0x1C9F4986, 0xDFE2ED07,
      0xB87242D1, 0x19DE7EAE, 0x053E561A, 0x15AD6F8C, 0x66626C1C, 0x7154C24C,
      0xEA082B2A, 0x93EB2939, 0x17DCB0F0, 0x58D4F2AE, 0x9EA294FB, 0x52CF564C,
      0x9883FE66, 0x2EC40581, 0x763953C3, 0x01D6692E, 0xD3A0C108, 0xA1E7160E,
      0xE4F2DFA6, 0x693ED285, 0x74904698, 0x4C2B0EDD, 0x4F757656, 0x5D393378,
      0xA132234F, 0x3D321C5D, 0xC3F5E194, 0x4B269301, 0xC79F022F, 0x3C997E7E,
      0x5E4F9504, 0x3FFAFBBD, 0x76F7AD0E, 0x296693F4, 0x3D1FCE6F, 0xC61E45BE,
      0xD3B5AB34, 0xF72BF9B7, 0x1B0434C0, 0x4E72B567, 0x5592A33D, 0xB5229301,
      0xCFD2A87F, 0x60AEB767, 0x1814386B, 0x30BCC33D, 0x38A0C07D, 0xFD1606F2,
      0xC363519B, 0x589DD390, 0x5479F8E6, 0x1CB8D647, 0x97FD61A9, 0xEA7759F4,
      0x2D57539D, 0x569A58CF, 0xE84E63AD, 0x462E1B78, 0x6580F87E, 0xF3817914,
      0x91DA55F4, 0x40A230F3, 0xD1988F35, 0xB6E318D2, 0x3FFA50BC, 0x3D40F021,
      0xC3C0BDAE, 0x4958C24C, 0x518F36B2, 0x84B1D370, 0x0FEDCE83, 0x878DDADA,
      0xF2A279C7, 0x94E01BE8, 0x90716F4B, 0x954B8AA3 };
  private static final int[] S8 = {
      0xE216300D, 0xBBDDFFFC, 0xA7EBDABD, 0x35648095, 0x7789F8B7, 0xE6C1121B,
      0x0E241600, 0x052CE8B5, 0x11A9CFB0, 0xE5952F11, 0xECE7990A, 0x9386D174,
      0x2A42931C, 0x76E38111, 0xB12DEF3A, 0x37DDDDFC, 0xDE9ADEB1, 0x0A0CC32C,
      0xBE197029, 0x84A00940, 0xBB243A0F, 0xB4D137CF, 0xB44E79F0, 0x049EEDFD,
      0x0B15A15D, 0x480D3168, 0x8BBBDE5A, 0x669DED42, 0xC7ECE831, 0x3F8F95E7,
      0x72DF191B, 0x7580330D, 0x94074251, 0x5C7DCDFA, 0xABBE6D63, 0xAA402164,
      0xB301D40A, 0x02E7D1CA, 0x53571DAE, 0x7A3182A2, 0x12A8DDEC, 0xFDAA335D,
      0x176F43E8, 0x71FB46D4, 0x38129022, 0xCE949AD4, 0xB84769AD, 0x965BD862,
      0x82F3D055, 0x66FB9767, 0x15B80B4E, 0x1D5B47A0, 0x4CFDE06F, 0xC28EC4B8,
      0x57E8726E, 0x647A78FC, 0x99865D44, 0x608BD593, 0x6C200E03, 0x39DC5FF6,
      0x5D0B00A3, 0xAE63AFF2, 0x7E8BD632, 0x70108C0C, 0xBBD35049, 0x2998DF04,
      0x980CF42A, 0x9B6DF491, 0x9E7EDD53, 0x06918548, 0x58CB7E07, 0x3B74EF2E,
      0x522FFFB1, 0xD24708CC, 0x1C7E27CD, 0xA4EB215B, 0x3CF1D2E2, 0x19B47A38,
      0x424F7618, 0x35856039, 0x9D17DEE7, 0x27EB35E6, 0xC9AFF67B, 0x36BAF5B8,
      0x09C467CD, 0xC18910B1, 0xE11DBF7B, 0x06CD1AF8, 0x7170C608, 0x2D5E3354,
      0xD4DE495A, 0x64C6D006, 0xBCC0C62C, 0x3DD00DB3, 0x708F8F34, 0x77D51B42,
      0x264F620F, 0x24B8D2BF, 0x15C1B79E, 0x46A52564, 0xF8D7E54E, 0x3E378160,
      0x7895CDA5, 0x859C15A5, 0xE6459788, 0xC37BC75F, 0xDB07BA0C, 0x0676A3AB,
      0x7F229B1E, 0x31842E7B, 0x24259FD7, 0xF8BEF472, 0x835FFCB8, 0x6DF4C1F2,
      0x96F5B195, 0xFD0AF0FC, 0xB0FE134C, 0xE2506D3D, 0x4F9B12EA, 0xF215F225,
      0xA223736F, 0x9FB4C428, 0x25D04979, 0x34C713F8, 0xC4618187, 0xEA7A6E98,
      0x7CD16EFC, 0x1436876C, 0xF1544107, 0xBEDEEE14, 0x56E9AF27, 0xA04AA441,
      0x3CF7C899, 0x92ECBAE6, 0xDD67016D, 0x151682EB, 0xA842EEDF, 0xFDBA60B4,
      0xF1907B75, 0x20E3030F, 0x24D8C29E, 0xE139673B, 0xEFA63FB8, 0x71873054,
      0xB6F2CF3B, 0x9F326442, 0xCB15A4CC, 0xB01A4504, 0xF1E47D8D, 0x844A1BE5,
      0xBAE7DFDC, 0x42CBDA70, 0xCD7DAE0A, 0x57E85B7A, 0xD53F5AF6, 0x20CF4D8C,
      0xCEA4D428, 0x79D130A4, 0x3486EBFB, 0x33D3CDDC, 0x77853B53, 0x37EFFCB5,
      0xC5068778, 0xE580B3E6, 0x4E68B8F4, 0xC5C8B37E, 0x0D809EA2, 0x398FEB7C,
      0x132A4F94, 0x43B7950E, 0x2FEE7D1C, 0x223613BD, 0xDD06CAA2, 0x37DF932B,
      0xC4248289, 0xACF3EBC3, 0x5715F6B7, 0xEF3478DD, 0xF267616F, 0xC148CBE4,
      0x9052815E, 0x5E410FAB, 0xB48A2465, 0x2EDA7FA4, 0xE87B40E4, 0xE98EA084,
      0x5889E9E1, 0xEFD390FC, 0xDD07D35B, 0xDB485694, 0x38D7E5B2, 0x57720101,
      0x730EDEBC, 0x5B643113, 0x94917E4F, 0x503C2FBA, 0x646F1282, 0x7523D24A,
      0xE0779695, 0xF9C17A8F, 0x7A5B2121, 0xD187B896, 0x29263A4D, 0xBA510CDF,
      0x81F47C9F, 0xAD1163ED, 0xEA7B5965, 0x1A00726E, 0x11403092, 0x00DA6D77,
      0x4A0CDD61, 0xAD1F4603, 0x605BDFB0, 0x9EEDC364, 0x22EBE6A8, 0xCEE7D28A,
      0xA0E736A0, 0x5564A6B9, 0x10853209, 0xC7EB8F37, 0x2DE705CA, 0x8951570F,
      0xDF09822B, 0xBD691A6C, 0xAA12E4F2, 0x87451C0F, 0xE0F6A27A, 0x3ADA4819,
      0x4CF1764F, 0x0D771C2B, 0x67CDB156, 0x350D8384, 0x5938FA0F, 0x42399EF3,
      0x36997B07, 0x0E84093D, 0x4AA93E61, 0x8360D87B, 0x1FA98B0C, 0x1149382C,
      0xE97625A5, 0x0614D1B7, 0x0E25244B, 0x0C768347, 0x589E8D82, 0x0D2059D1,
      0xA466BB1E, 0xF8DA0A82, 0x04F19130, 0xBA6E4EC0, 0x99265164, 0x1EE7230D,
      0x50B2AD80, 0xEAEE6801, 0x8DB2A283, 0xEA8BF59E };
  private static final int _12_ROUNDS = 12;
  private static final int _16_ROUNDS = 16;

  /** Trivial 0-arguments constructor. */
  public Cast5()
  {
    super(Registry.CAST5_CIPHER, DEFAULT_BLOCK_SIZE, DEFAULT_KEY_SIZE);
  }

  /**
   * Assuming the input is a 32-bit block organised as: b31b30b29...b0, this
   * method returns an array of 4 Java ints, containing from position 0 onward
   * the values: {b31b30b29b28, b27b26b25b24, ... , b3b2b1b0}.
   *
   * @param x a 32-bit block.
   * @return an array of 4 ints, each being the contents of an 8-bit block from
   * the input.
   */
  private static final int[] unscramble(int x)
  {
    return new int[] { x >>> 24, (x >>> 16) & 0xFF, (x >>> 8) & 0xFF, x & 0xFF };
  }

  public Object clone()
  {
    Cast5 result = new Cast5();
    result.currentBlockSize = this.currentBlockSize;
    return result;
  }

  public Iterator blockSizes()
  {
    ArrayList al = new ArrayList();
    al.add(Integer.valueOf(DEFAULT_BLOCK_SIZE));
    return Collections.unmodifiableList(al).iterator();
  }

  public Iterator keySizes()
  {
    ArrayList al = new ArrayList();
    for (int n = 5; n < 17; n++)
      al.add(Integer.valueOf(n));
    return Collections.unmodifiableList(al).iterator();
  }

  public Object makeKey(byte[] uk, int bs) throws InvalidKeyException
  {
    if (bs != DEFAULT_BLOCK_SIZE)
      throw new IllegalArgumentException();
    if (uk == null)
      throw new InvalidKeyException("Empty key");
    int len = uk.length;
    if (len < 5 || len > 16)
      throw new InvalidKeyException("Key size (in bytes) is not in the range [5..16]");
    Cast5Key result = new Cast5Key();
    result.rounds = (len < 11) ? _12_ROUNDS : _16_ROUNDS;
    byte[] kk = new byte[16];
    System.arraycopy(uk, 0, kk, 0, len);
    int z0z1z2z3, z4z5z6z7, z8z9zAzB, zCzDzEzF;
    int z0, z1, z2, z3, z4, z5, z6, z7, z8, z9, zA, zB, zC, zD, zE, zF;
    int x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, xA, xB, xC, xD, xE, xF;
    int[] b;
    int x0x1x2x3 =  kk[0 ]         << 24
                 | (kk[1 ] & 0xFF) << 16
                 | (kk[2 ] & 0xFF) << 8
                 | (kk[3 ] & 0xFF);
    int x4x5x6x7 =  kk[4 ]         << 24
                 | (kk[5 ] & 0xFF) << 16
                 | (kk[6 ] & 0xFF) << 8
                 | (kk[7 ] & 0xFF);
    int x8x9xAxB =  kk[8 ]         << 24
                 | (kk[9 ] & 0xFF) << 16
                 | (kk[10] & 0xFF) << 8
                 | (kk[11] & 0xFF);
    int xCxDxExF =  kk[12]         << 24
                 | (kk[13] & 0xFF) << 16
                 | (kk[14] & 0xFF) << 8
                 | (kk[15] & 0xFF);
    b = unscramble(x0x1x2x3);
    x0 = b[0];
    x1 = b[1];
    x2 = b[2];
    x3 = b[3];
    b = unscramble(x4x5x6x7);
    x4 = b[0];
    x5 = b[1];
    x6 = b[2];
    x7 = b[3];
    b = unscramble(x8x9xAxB);
    x8 = b[0];
    x9 = b[1];
    xA = b[2];
    xB = b[3];
    b = unscramble(xCxDxExF);
    xC = b[0];
    xD = b[1];
    xE = b[2];
    xF = b[3];
    z0z1z2z3 = x0x1x2x3 ^ S5[xD] ^ S6[xF] ^ S7[xC] ^ S8[xE] ^ S7[x8];
    b = unscramble(z0z1z2z3);
    z0 = b[0];
    z1 = b[1];
    z2 = b[2];
    z3 = b[3];
    z4z5z6z7 = x8x9xAxB ^ S5[z0] ^ S6[z2] ^ S7[z1] ^ S8[z3] ^ S8[xA];
    b = unscramble(z4z5z6z7);
    z4 = b[0];
    z5 = b[1];
    z6 = b[2];
    z7 = b[3];
    z8z9zAzB = xCxDxExF ^ S5[z7] ^ S6[z6] ^ S7[z5] ^ S8[z4] ^ S5[x9];
    b = unscramble(z8z9zAzB);
    z8 = b[0];
    z9 = b[1];
    zA = b[2];
    zB = b[3];
    zCzDzEzF = x4x5x6x7 ^ S5[zA] ^ S6[z9] ^ S7[zB] ^ S8[z8] ^ S6[xB];
    b = unscramble(zCzDzEzF);
    zC = b[0];
    zD = b[1];
    zE = b[2];
    zF = b[3];
    result.Km0 = S5[z8] ^ S6[z9] ^ S7[z7] ^ S8[z6] ^ S5[z2];
    result.Km1 = S5[zA] ^ S6[zB] ^ S7[z5] ^ S8[z4] ^ S6[z6];
    result.Km2 = S5[zC] ^ S6[zD] ^ S7[z3] ^ S8[z2] ^ S7[z9];
    result.Km3 = S5[zE] ^ S6[zF] ^ S7[z1] ^ S8[z0] ^ S8[zC];
    x0x1x2x3 = z8z9zAzB ^ S5[z5] ^ S6[z7] ^ S7[z4] ^ S8[z6] ^ S7[z0];
    b = unscramble(x0x1x2x3);
    x0 = b[0];
    x1 = b[1];
    x2 = b[2];
    x3 = b[3];
    x4x5x6x7 = z0z1z2z3 ^ S5[x0] ^ S6[x2] ^ S7[x1] ^ S8[x3] ^ S8[z2];
    b = unscramble(x4x5x6x7);
    x4 = b[0];
    x5 = b[1];
    x6 = b[2];
    x7 = b[3];
    x8x9xAxB = z4z5z6z7 ^ S5[x7] ^ S6[x6] ^ S7[x5] ^ S8[x4] ^ S5[z1];
    b = unscramble(x8x9xAxB);
    x8 = b[0];
    x9 = b[1];
    xA = b[2];
    xB = b[3];
    xCxDxExF = zCzDzEzF ^ S5[xA] ^ S6[x9] ^ S7[xB] ^ S8[x8] ^ S6[z3];
    b = unscramble(xCxDxExF);
    xC = b[0];
    xD = b[1];
    xE = b[2];
    xF = b[3];
    result.Km4 = S5[x3] ^ S6[x2] ^ S7[xC] ^ S8[xD] ^ S5[x8];
    result.Km5 = S5[x1] ^ S6[x0] ^ S7[xE] ^ S8[xF] ^ S6[xD];
    result.Km6 = S5[x7] ^ S6[x6] ^ S7[x8] ^ S8[x9] ^ S7[x3];
    result.Km7 = S5[x5] ^ S6[x4] ^ S7[xA] ^ S8[xB] ^ S8[x7];
    z0z1z2z3 = x0x1x2x3 ^ S5[xD] ^ S6[xF] ^ S7[xC] ^ S8[xE] ^ S7[x8];
    b = unscramble(z0z1z2z3);
    z0 = b[0];
    z1 = b[1];
    z2 = b[2];
    z3 = b[3];
    z4z5z6z7 = x8x9xAxB ^ S5[z0] ^ S6[z2] ^ S7[z1] ^ S8[z3] ^ S8[xA];
    b = unscramble(z4z5z6z7);
    z4 = b[0];
    z5 = b[1];
    z6 = b[2];
    z7 = b[3];
    z8z9zAzB = xCxDxExF ^ S5[z7] ^ S6[z6] ^ S7[z5] ^ S8[z4] ^ S5[x9];
    b = unscramble(z8z9zAzB);
    z8 = b[0];
    z9 = b[1];
    zA = b[2];
    zB = b[3];
    zCzDzEzF = x4x5x6x7 ^ S5[zA] ^ S6[z9] ^ S7[zB] ^ S8[z8] ^ S6[xB];
    b = unscramble(zCzDzEzF);
    zC = b[0];
    zD = b[1];
    zE = b[2];
    zF = b[3];
    result.Km8 = S5[z3] ^ S6[z2] ^ S7[zC] ^ S8[zD] ^ S5[z9];
    result.Km9 = S5[z1] ^ S6[z0] ^ S7[zE] ^ S8[zF] ^ S6[zC];
    result.Km10 = S5[z7] ^ S6[z6] ^ S7[z8] ^ S8[z9] ^ S7[z2];
    result.Km11 = S5[z5] ^ S6[z4] ^ S7[zA] ^ S8[zB] ^ S8[z6];
    x0x1x2x3 = z8z9zAzB ^ S5[z5] ^ S6[z7] ^ S7[z4] ^ S8[z6] ^ S7[z0];
    b = unscramble(x0x1x2x3);
    x0 = b[0];
    x1 = b[1];
    x2 = b[2];
    x3 = b[3];
    x4x5x6x7 = z0z1z2z3 ^ S5[x0] ^ S6[x2] ^ S7[x1] ^ S8[x3] ^ S8[z2];
    b = unscramble(x4x5x6x7);
    x4 = b[0];
    x5 = b[1];
    x6 = b[2];
    x7 = b[3];
    x8x9xAxB = z4z5z6z7 ^ S5[x7] ^ S6[x6] ^ S7[x5] ^ S8[x4] ^ S5[z1];
    b = unscramble(x8x9xAxB);
    x8 = b[0];
    x9 = b[1];
    xA = b[2];
    xB = b[3];
    xCxDxExF = zCzDzEzF ^ S5[xA] ^ S6[x9] ^ S7[xB] ^ S8[x8] ^ S6[z3];
    b = unscramble(xCxDxExF);
    xC = b[0];
    xD = b[1];
    xE = b[2];
    xF = b[3];
    result.Km12 = S5[x8] ^ S6[x9] ^ S7[x7] ^ S8[x6] ^ S5[x3];
    result.Km13 = S5[xA] ^ S6[xB] ^ S7[x5] ^ S8[x4] ^ S6[x7];
    result.Km14 = S5[xC] ^ S6[xD] ^ S7[x3] ^ S8[x2] ^ S7[x8];
    result.Km15 = S5[xE] ^ S6[xF] ^ S7[x1] ^ S8[x0] ^ S8[xD];
    // The remaining half is identical to what is given above, carrying on
    // from the last created x0..xF to generate keys K17 - K32. These keys
    // will be used as the 'rotation' keys and as such only the five least
    // significant bits are to be considered.
    z0z1z2z3 = x0x1x2x3 ^ S5[xD] ^ S6[xF] ^ S7[xC] ^ S8[xE] ^ S7[x8];
    b = unscramble(z0z1z2z3);
    z0 = b[0];
    z1 = b[1];
    z2 = b[2];
    z3 = b[3];
    z4z5z6z7 = x8x9xAxB ^ S5[z0] ^ S6[z2] ^ S7[z1] ^ S8[z3] ^ S8[xA];
    b = unscramble(z4z5z6z7);
    z4 = b[0];
    z5 = b[1];
    z6 = b[2];
    z7 = b[3];
    z8z9zAzB = xCxDxExF ^ S5[z7] ^ S6[z6] ^ S7[z5] ^ S8[z4] ^ S5[x9];
    b = unscramble(z8z9zAzB);
    z8 = b[0];
    z9 = b[1];
    zA = b[2];
    zB = b[3];
    zCzDzEzF = x4x5x6x7 ^ S5[zA] ^ S6[z9] ^ S7[zB] ^ S8[z8] ^ S6[xB];
    b = unscramble(zCzDzEzF);
    zC = b[0];
    zD = b[1];
    zE = b[2];
    zF = b[3];
    result.Kr0 = (S5[z8] ^ S6[z9] ^ S7[z7] ^ S8[z6] ^ S5[z2]) & 0x1F;
    result.Kr1 = (S5[zA] ^ S6[zB] ^ S7[z5] ^ S8[z4] ^ S6[z6]) & 0x1F;
    result.Kr2 = (S5[zC] ^ S6[zD] ^ S7[z3] ^ S8[z2] ^ S7[z9]) & 0x1F;
    result.Kr3 = (S5[zE] ^ S6[zF] ^ S7[z1] ^ S8[z0] ^ S8[zC]) & 0x1F;
    x0x1x2x3 = z8z9zAzB ^ S5[z5] ^ S6[z7] ^ S7[z4] ^ S8[z6] ^ S7[z0];
    b = unscramble(x0x1x2x3);
    x0 = b[0];
    x1 = b[1];
    x2 = b[2];
    x3 = b[3];
    x4x5x6x7 = z0z1z2z3 ^ S5[x0] ^ S6[x2] ^ S7[x1] ^ S8[x3] ^ S8[z2];
    b = unscramble(x4x5x6x7);
    x4 = b[0];
    x5 = b[1];
    x6 = b[2];
    x7 = b[3];
    x8x9xAxB = z4z5z6z7 ^ S5[x7] ^ S6[x6] ^ S7[x5] ^ S8[x4] ^ S5[z1];
    b = unscramble(x8x9xAxB);
    x8 = b[0];
    x9 = b[1];
    xA = b[2];
    xB = b[3];
    xCxDxExF = zCzDzEzF ^ S5[xA] ^ S6[x9] ^ S7[xB] ^ S8[x8] ^ S6[z3];
    b = unscramble(xCxDxExF);
    xC = b[0];
    xD = b[1];
    xE = b[2];
    xF = b[3];
    result.Kr4 = (S5[x3] ^ S6[x2] ^ S7[xC] ^ S8[xD] ^ S5[x8]) & 0x1F;
    result.Kr5 = (S5[x1] ^ S6[x0] ^ S7[xE] ^ S8[xF] ^ S6[xD]) & 0x1F;
    result.Kr6 = (S5[x7] ^ S6[x6] ^ S7[x8] ^ S8[x9] ^ S7[x3]) & 0x1F;
    result.Kr7 = (S5[x5] ^ S6[x4] ^ S7[xA] ^ S8[xB] ^ S8[x7]) & 0x1F;
    z0z1z2z3 = x0x1x2x3 ^ S5[xD] ^ S6[xF] ^ S7[xC] ^ S8[xE] ^ S7[x8];
    b = unscramble(z0z1z2z3);
    z0 = b[0];
    z1 = b[1];
    z2 = b[2];
    z3 = b[3];
    z4z5z6z7 = x8x9xAxB ^ S5[z0] ^ S6[z2] ^ S7[z1] ^ S8[z3] ^ S8[xA];
    b = unscramble(z4z5z6z7);
    z4 = b[0];
    z5 = b[1];
    z6 = b[2];
    z7 = b[3];
    z8z9zAzB = xCxDxExF ^ S5[z7] ^ S6[z6] ^ S7[z5] ^ S8[z4] ^ S5[x9];
    b = unscramble(z8z9zAzB);
    z8 = b[0];
    z9 = b[1];
    zA = b[2];
    zB = b[3];
    zCzDzEzF = x4x5x6x7 ^ S5[zA] ^ S6[z9] ^ S7[zB] ^ S8[z8] ^ S6[xB];
    b = unscramble(zCzDzEzF);
    zC = b[0];
    zD = b[1];
    zE = b[2];
    zF = b[3];
    result.Kr8 = (S5[z3] ^ S6[z2] ^ S7[zC] ^ S8[zD] ^ S5[z9]) & 0x1F;
    result.Kr9 = (S5[z1] ^ S6[z0] ^ S7[zE] ^ S8[zF] ^ S6[zC]) & 0x1F;
    result.Kr10 = (S5[z7] ^ S6[z6] ^ S7[z8] ^ S8[z9] ^ S7[z2]) & 0x1F;
    result.Kr11 = (S5[z5] ^ S6[z4] ^ S7[zA] ^ S8[zB] ^ S8[z6]) & 0x1F;
    x0x1x2x3 = z8z9zAzB ^ S5[z5] ^ S6[z7] ^ S7[z4] ^ S8[z6] ^ S7[z0];
    b = unscramble(x0x1x2x3);
    x0 = b[0];
    x1 = b[1];
    x2 = b[2];
    x3 = b[3];
    x4x5x6x7 = z0z1z2z3 ^ S5[x0] ^ S6[x2] ^ S7[x1] ^ S8[x3] ^ S8[z2];
    b = unscramble(x4x5x6x7);
    x4 = b[0];
    x5 = b[1];
    x6 = b[2];
    x7 = b[3];
    x8x9xAxB = z4z5z6z7 ^ S5[x7] ^ S6[x6] ^ S7[x5] ^ S8[x4] ^ S5[z1];
    b = unscramble(x8x9xAxB);
    x8 = b[0];
    x9 = b[1];
    xA = b[2];
    xB = b[3];
    xCxDxExF = zCzDzEzF ^ S5[xA] ^ S6[x9] ^ S7[xB] ^ S8[x8] ^ S6[z3];
    b = unscramble(xCxDxExF);
    xC = b[0];
    xD = b[1];
    xE = b[2];
    xF = b[3];
    result.Kr12 = (S5[x8] ^ S6[x9] ^ S7[x7] ^ S8[x6] ^ S5[x3]) & 0x1F;
    result.Kr13 = (S5[xA] ^ S6[xB] ^ S7[x5] ^ S8[x4] ^ S6[x7]) & 0x1F;
    result.Kr14 = (S5[xC] ^ S6[xD] ^ S7[x3] ^ S8[x2] ^ S7[x8]) & 0x1F;
    result.Kr15 = (S5[xE] ^ S6[xF] ^ S7[x1] ^ S8[x0] ^ S8[xD]) & 0x1F;
    return result;
  }

  /**
   * The full encryption algorithm is given in the following four steps.
   * <pre>
   *    INPUT:  plaintext m1...m64; key K = k1...k128.
   *    OUTPUT: ciphertext c1...c64.
   * </pre>
   * <ol>
   *   <li>(key schedule) Compute 16 pairs of subkeys {Kmi, Kri} from a user
   *    key (see makeKey() method).</li>
   *   <li>(L0,R0) <-- (m1...m64).  (Split the plaintext into left and right
   *    32-bit halves L0 = m1...m32 and R0 = m33...m64.).</li>
   *   <li>(16 rounds) for i from 1 to 16, compute Li and Ri as follows:
   *     <ul>
   *       <li>Li = Ri-1;</li>
   *       <li>Ri = Li-1 ^ F(Ri-1,Kmi,Kri), where F is defined in method F() --
   *       f is of Type 1, Type 2, or Type 3, depending on i, and ^ being the
   *       bitwise XOR function.</li>
   *     </ul>
   *   <li>c1...c64 <-- (R16,L16). (Exchange final blocks L16, R16 and
   *    concatenate to form the ciphertext.)</li>
   * </ol>
   * <p>
   * Decryption is identical to the encryption algorithm given above, except
   * that the rounds (and therefore the subkey pairs) are used in reverse order
   * to compute (L0,R0) from (R16,L16).
   * <p>
   * Looking at the iterations/rounds in pairs we have:
   * <pre>
   *    (1a)    Li = Ri-1;
   *    (1b)    Ri = Li-1 ^ Fi(Ri-1);
   *    (2a)    Li+1 = Ri;
   *    (2b)    Ri+1 = Li ^ Fi+1(Ri);
   * </pre>
   * which by substituting (2a) in (2b) becomes
   * <pre>
   *    (2c)    Ri+1 = Li ^ Fi+1(Li+1);
   * </pre>
   * by substituting (1b) in (2a) and (1a) in (2c), we get:
   * <pre>
   *    (3a)    Li+1 = Li-1 ^ Fi(Ri-1);
   *    (3b)    Ri+1 = Ri-1 ^ Fi+1(Li+1);
   * </pre>
   * Using only one couple of variables L and R, initialised to L0 and R0
   * respectively, the assignments for each pair of rounds become:
   * <pre>
   *    (4a)    L ^= Fi(R);
   *    (4b)    R ^= Fi+1(L);
   * </pre>
   *
   * @param in contains the plain-text 64-bit block.
   * @param i start index within input where data is considered.
   * @param out will contain the cipher-text block.
   * @param j index in out where cipher-text starts.
   * @param k the session key object.
   * @param bs the desired block size.
   */
  public void encrypt(byte[] in, int i, byte[] out, int j, Object k, int bs)
  {
    if (bs != DEFAULT_BLOCK_SIZE)
      throw new IllegalArgumentException();
    Cast5Key K = (Cast5Key) k;
    int L = (in[i++] & 0xFF) << 24
          | (in[i++] & 0xFF) << 16
          | (in[i++] & 0xFF) << 8
          |  in[i++] & 0xFF;
    int R = (in[i++] & 0xFF) << 24
          | (in[i++] & 0xFF) << 16
          | (in[i++] & 0xFF) << 8
          |  in[i  ] & 0xFF;
    L ^= f1(R, K.Km0, K.Kr0);
    R ^= f2(L, K.Km1, K.Kr1); // round 2
    L ^= f3(R, K.Km2, K.Kr2);
    R ^= f1(L, K.Km3, K.Kr3); // round 4
    L ^= f2(R, K.Km4, K.Kr4);
    R ^= f3(L, K.Km5, K.Kr5); // round 6
    L ^= f1(R, K.Km6, K.Kr6);
    R ^= f2(L, K.Km7, K.Kr7); // round 8
    L ^= f3(R, K.Km8, K.Kr8);
    R ^= f1(L, K.Km9, K.Kr9); // round 10
    L ^= f2(R, K.Km10, K.Kr10);
    R ^= f3(L, K.Km11, K.Kr11); // round 12
    if (K.rounds == _16_ROUNDS)
      {
        L ^= f1(R, K.Km12, K.Kr12);
        R ^= f2(L, K.Km13, K.Kr13); // round 14
        L ^= f3(R, K.Km14, K.Kr14);
        R ^= f1(L, K.Km15, K.Kr15); // round 16
      }
    out[j++] = (byte)(R >>> 24);
    out[j++] = (byte)(R >>> 16);
    out[j++] = (byte)(R >>> 8);
    out[j++] = (byte) R;
    out[j++] = (byte)(L >>> 24);
    out[j++] = (byte)(L >>> 16);
    out[j++] = (byte)(L >>> 8);
    out[j  ] = (byte) L;
  }

  public void decrypt(byte[] in, int i, byte[] out, int j, Object k, int bs)
  {
    if (bs != DEFAULT_BLOCK_SIZE)
      throw new IllegalArgumentException();
    Cast5Key K = (Cast5Key) k;
    int L = (in[i++] & 0xFF) << 24
          | (in[i++] & 0xFF) << 16
          | (in[i++] & 0xFF) << 8
          |  in[i++] & 0xFF;
    int R = (in[i++] & 0xFF) << 24
          | (in[i++] & 0xFF) << 16
          | (in[i++] & 0xFF) << 8
          |  in[i  ] & 0xFF;
    if (K.rounds == _16_ROUNDS)
      {
        L ^= f1(R, K.Km15, K.Kr15);
        R ^= f3(L, K.Km14, K.Kr14);
        L ^= f2(R, K.Km13, K.Kr13);
        R ^= f1(L, K.Km12, K.Kr12);
      }
    L ^= f3(R, K.Km11, K.Kr11);
    R ^= f2(L, K.Km10, K.Kr10);
    L ^= f1(R, K.Km9, K.Kr9);
    R ^= f3(L, K.Km8, K.Kr8);
    L ^= f2(R, K.Km7, K.Kr7);
    R ^= f1(L, K.Km6, K.Kr6);
    L ^= f3(R, K.Km5, K.Kr5);
    R ^= f2(L, K.Km4, K.Kr4);
    L ^= f1(R, K.Km3, K.Kr3);
    R ^= f3(L, K.Km2, K.Kr2);
    L ^= f2(R, K.Km1, K.Kr1);
    R ^= f1(L, K.Km0, K.Kr0);
    out[j++] = (byte)(R >>> 24);
    out[j++] = (byte)(R >>> 16);
    out[j++] = (byte)(R >>> 8);
    out[j++] = (byte) R;
    out[j++] = (byte)(L >>> 24);
    out[j++] = (byte)(L >>> 16);
    out[j++] = (byte)(L >>> 8);
    out[j  ] = (byte) L;
  }

  public boolean selfTest()
  {
    if (valid == null)
      {
        boolean result = super.selfTest(); // do symmetry tests
        if (result)
          result = testKat(KAT_KEY, KAT_CT, KAT_PT);
        valid = Boolean.valueOf(result);
      }
    return valid.booleanValue();
  }

  private final int f1(int I, int m, int r)
  {
    I = m + I;
    I = I << r | I >>> (32 - r);
    return (((S1[(I >>> 24) & 0xFF])
            ^ S2[(I >>> 16) & 0xFF])
            - S3[(I >>>  8) & 0xFF])
            + S4[ I         & 0xFF];
  }

  private final int f2(int I, int m, int r)
  {
    I = m ^ I;
    I = I << r | I >>> (32 - r);
    return (((S1[(I >>> 24) & 0xFF])
            - S2[(I >>> 16) & 0xFF])
            + S3[(I >>>  8) & 0xFF])
            ^ S4[ I         & 0xFF];
  }

  private final int f3(int I, int m, int r)
  {
    I = m - I;
    I = I << r | I >>> (32 - r);
    return (((S1[(I >>> 24) & 0xFF])
            + S2[(I >>> 16) & 0xFF])
            ^ S3[(I >>>  8) & 0xFF])
            - S4[ I         & 0xFF];
  }

  /** An opaque CAST5 key object. */
  private class Cast5Key
  {
    int rounds;
    /** Masking session keys. */
    int Km0, Km1, Km2,  Km3,  Km4,  Km5,  Km6,  Km7,
        Km8, Km9, Km10, Km11, Km12, Km13, Km14, Km15;
    /** Rotation session keys. */
    int Kr0, Kr1, Kr2,  Kr3,  Kr4,  Kr5,  Kr6,  Kr7,
        Kr8, Kr9, Kr10, Kr11, Kr12, Kr13, Kr14, Kr15;
  }
}