blowfish.java

linux下建立JAVA虚拟机的源码KAFFE

/* Blowfish.java -- 
   Copyright (C) 2001, 2002, 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.

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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
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exception statement from your version.  */

// --------------------------------------------------------------------------
//
// Based on the C implementation from the GNU Privacy Guard.
//
// --------------------------------------------------------------------------

package gnu.javax.crypto.cipher;

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

import java.util.Collections;
import java.util.Iterator;

/**
 * Blowfish is a 16-round, 64-bit Feistel cipher designed by Bruce
 * Schneier. It accepts a variable-length key of up to 448 bits.
 *
 * <p>References:</p>
 * <ol>
 *    <li>Schneier, Bruce: <i>Applied Cryptography</i>, Second Edition,
 *    336--339, 647--654 (1996 Bruce Schneier).</li>
 *    <li><a href="http://www.counterpane.com/blowfish.html">The
 *    Blowfish Encryption Algorithm.</a></li>
 * </ol>
 */
public class Blowfish extends BaseCipher
{

  // Constants and variables
  // -----------------------------------------------------------------

  private static final int DEFAULT_BLOCK_SIZE = 8;

  private static final int DEFAULT_KEY_SIZE = 8;

  private static final int MAX_KEY_LENGTH = 56;

  /** Initial value of the p-array. */
  private static final int[] P = { 0x243f6a88, 0x85a308d3, 0x13198a2e,
                                  0x03707344, 0xa4093822, 0x299f31d0,
                                  0x082efa98, 0xec4e6c89, 0x452821e6,
                                  0x38d01377, 0xbe5466cf, 0x34e90c6c,
                                  0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5,
                                  0xb5470917, 0x9216d5d9, 0x8979fb1b };

  /** Initial value of S-box 1. */
  static final int[] KS0 = { 0xd1310ba6, 0x98dfb5ac, 0x2ffd72db, 0xd01adfb7,
                            0xb8e1afed, 0x6a267e96, 0xba7c9045, 0xf12c7f99,
                            0x24a19947, 0xb3916cf7, 0x0801f2e2, 0x858efc16,
                            0x636920d8, 0x71574e69, 0xa458fea3, 0xf4933d7e,
                            0x0d95748f, 0x728eb658, 0x718bcd58, 0x82154aee,
                            0x7b54a41d, 0xc25a59b5, 0x9c30d539, 0x2af26013,
                            0xc5d1b023, 0x286085f0, 0xca417918, 0xb8db38ef,
                            0x8e79dcb0, 0x603a180e, 0x6c9e0e8b, 0xb01e8a3e,
                            0xd71577c1, 0xbd314b27, 0x78af2fda, 0x55605c60,
                            0xe65525f3, 0xaa55ab94, 0x57489862, 0x63e81440,
                            0x55ca396a, 0x2aab10b6, 0xb4cc5c34, 0x1141e8ce,
                            0xa15486af, 0x7c72e993, 0xb3ee1411, 0x636fbc2a,
                            0x2ba9c55d, 0x741831f6, 0xce5c3e16, 0x9b87931e,
                            0xafd6ba33, 0x6c24cf5c, 0x7a325381, 0x28958677,
                            0x3b8f4898, 0x6b4bb9af, 0xc4bfe81b, 0x66282193,
                            0x61d809cc, 0xfb21a991, 0x487cac60, 0x5dec8032,
                            0xef845d5d, 0xe98575b1, 0xdc262302, 0xeb651b88,
                            0x23893e81, 0xd396acc5, 0x0f6d6ff3, 0x83f44239,
                            0x2e0b4482, 0xa4842004, 0x69c8f04a, 0x9e1f9b5e,
                            0x21c66842, 0xf6e96c9a, 0x670c9c61, 0xabd388f0,
                            0x6a51a0d2, 0xd8542f68, 0x960fa728, 0xab5133a3,
                            0x6eef0b6c, 0x137a3be4, 0xba3bf050, 0x7efb2a98,
                            0xa1f1651d, 0x39af0176, 0x66ca593e, 0x82430e88,
                            0x8cee8619, 0x456f9fb4, 0x7d84a5c3, 0x3b8b5ebe,
                            0xe06f75d8, 0x85c12073, 0x401a449f, 0x56c16aa6,
                            0x4ed3aa62, 0x363f7706, 0x1bfedf72, 0x429b023d,
                            0x37d0d724, 0xd00a1248, 0xdb0fead3, 0x49f1c09b,
                            0x075372c9, 0x80991b7b, 0x25d479d8, 0xf6e8def7,
                            0xe3fe501a, 0xb6794c3b, 0x976ce0bd, 0x04c006ba,
                            0xc1a94fb6, 0x409f60c4, 0x5e5c9ec2, 0x196a2463,
                            0x68fb6faf, 0x3e6c53b5, 0x1339b2eb, 0x3b52ec6f,
                            0x6dfc511f, 0x9b30952c, 0xcc814544, 0xaf5ebd09,
                            0xbee3d004, 0xde334afd, 0x660f2807, 0x192e4bb3,
                            0xc0cba857, 0x45c8740f, 0xd20b5f39, 0xb9d3fbdb,
                            0x5579c0bd, 0x1a60320a, 0xd6a100c6, 0x402c7279,
                            0x679f25fe, 0xfb1fa3cc, 0x8ea5e9f8, 0xdb3222f8,
                            0x3c7516df, 0xfd616b15, 0x2f501ec8, 0xad0552ab,
                            0x323db5fa, 0xfd238760, 0x53317b48, 0x3e00df82,
                            0x9e5c57bb, 0xca6f8ca0, 0x1a87562e, 0xdf1769db,
                            0xd542a8f6, 0x287effc3, 0xac6732c6, 0x8c4f5573,
                            0x695b27b0, 0xbbca58c8, 0xe1ffa35d, 0xb8f011a0,
                            0x10fa3d98, 0xfd2183b8, 0x4afcb56c, 0x2dd1d35b,
                            0x9a53e479, 0xb6f84565, 0xd28e49bc, 0x4bfb9790,
                            0xe1ddf2da, 0xa4cb7e33, 0x62fb1341, 0xcee4c6e8,
                            0xef20cada, 0x36774c01, 0xd07e9efe, 0x2bf11fb4,
                            0x95dbda4d, 0xae909198, 0xeaad8e71, 0x6b93d5a0,
                            0xd08ed1d0, 0xafc725e0, 0x8e3c5b2f, 0x8e7594b7,
                            0x8ff6e2fb, 0xf2122b64, 0x8888b812, 0x900df01c,
                            0x4fad5ea0, 0x688fc31c, 0xd1cff191, 0xb3a8c1ad,
                            0x2f2f2218, 0xbe0e1777, 0xea752dfe, 0x8b021fa1,
                            0xe5a0cc0f, 0xb56f74e8, 0x18acf3d6, 0xce89e299,
                            0xb4a84fe0, 0xfd13e0b7, 0x7cc43b81, 0xd2ada8d9,
                            0x165fa266, 0x80957705, 0x93cc7314, 0x211a1477,
                            0xe6ad2065, 0x77b5fa86, 0xc75442f5, 0xfb9d35cf,
                            0xebcdaf0c, 0x7b3e89a0, 0xd6411bd3, 0xae1e7e49,
                            0x00250e2d, 0x2071b35e, 0x226800bb, 0x57b8e0af,
                            0x2464369b, 0xf009b91e, 0x5563911d, 0x59dfa6aa,
                            0x78c14389, 0xd95a537f, 0x207d5ba2, 0x02e5b9c5,
                            0x83260376, 0x6295cfa9, 0x11c81968, 0x4e734a41,
                            0xb3472dca, 0x7b14a94a, 0x1b510052, 0x9a532915,
                            0xd60f573f, 0xbc9bc6e4, 0x2b60a476, 0x81e67400,
                            0x08ba6fb5, 0x571be91f, 0xf296ec6b, 0x2a0dd915,
                            0xb6636521, 0xe7b9f9b6, 0xff34052e, 0xc5855664,
                            0x53b02d5d, 0xa99f8fa1, 0x08ba4799, 0x6e85076a };

  /** Initial value of S-box 2. */
  private static final int[] KS1 = { 0x4b7a70e9, 0xb5b32944, 0xdb75092e,
                                    0xc4192623, 0xad6ea6b0, 0x49a7df7d,
                                    0x9cee60b8, 0x8fedb266, 0xecaa8c71,
                                    0x699a17ff, 0x5664526c, 0xc2b19ee1,
                                    0x193602a5, 0x75094c29, 0xa0591340,
                                    0xe4183a3e, 0x3f54989a, 0x5b429d65,
                                    0x6b8fe4d6, 0x99f73fd6, 0xa1d29c07,
                                    0xefe830f5, 0x4d2d38e6, 0xf0255dc1,
                                    0x4cdd2086, 0x8470eb26, 0x6382e9c6,
                                    0x021ecc5e, 0x09686b3f, 0x3ebaefc9,
                                    0x3c971814, 0x6b6a70a1, 0x687f3584,
                                    0x52a0e286, 0xb79c5305, 0xaa500737,
                                    0x3e07841c, 0x7fdeae5c, 0x8e7d44ec,
                                    0x5716f2b8, 0xb03ada37, 0xf0500c0d,
                                    0xf01c1f04, 0x0200b3ff, 0xae0cf51a,
                                    0x3cb574b2, 0x25837a58, 0xdc0921bd,
                                    0xd19113f9, 0x7ca92ff6, 0x94324773,
                                    0x22f54701, 0x3ae5e581, 0x37c2dadc,
                                    0xc8b57634, 0x9af3dda7, 0xa9446146,
                                    0x0fd0030e, 0xecc8c73e, 0xa4751e41,
                                    0xe238cd99, 0x3bea0e2f, 0x3280bba1,
                                    0x183eb331, 0x4e548b38, 0x4f6db908,
                                    0x6f420d03, 0xf60a04bf, 0x2cb81290,
                                    0x24977c79, 0x5679b072, 0xbcaf89af,
                                    0xde9a771f, 0xd9930810, 0xb38bae12,
                                    0xdccf3f2e, 0x5512721f, 0x2e6b7124,
                                    0x501adde6, 0x9f84cd87, 0x7a584718,
                                    0x7408da17, 0xbc9f9abc, 0xe94b7d8c,
                                    0xec7aec3a, 0xdb851dfa, 0x63094366,
                                    0xc464c3d2, 0xef1c1847, 0x3215d908,
                                    0xdd433b37, 0x24c2ba16, 0x12a14d43,
                                    0x2a65c451, 0x50940002, 0x133ae4dd,
                                    0x71dff89e, 0x10314e55, 0x81ac77d6,
                                    0x5f11199b, 0x043556f1, 0xd7a3c76b,
                                    0x3c11183b, 0x5924a509, 0xf28fe6ed,
                                    0x97f1fbfa, 0x9ebabf2c, 0x1e153c6e,
                                    0x86e34570, 0xeae96fb1, 0x860e5e0a,
                                    0x5a3e2ab3, 0x771fe71c, 0x4e3d06fa,
                                    0x2965dcb9, 0x99e71d0f, 0x803e89d6,
                                    0x5266c825, 0x2e4cc978, 0x9c10b36a,
                                    0xc6150eba, 0x94e2ea78, 0xa5fc3c53,
                                    0x1e0a2df4, 0xf2f74ea7, 0x361d2b3d,
                                    0x1939260f, 0x19c27960, 0x5223a708,
                                    0xf71312b6, 0xebadfe6e, 0xeac31f66,
                                    0xe3bc4595, 0xa67bc883, 0xb17f37d1,
                                    0x018cff28, 0xc332ddef, 0xbe6c5aa5,
                                    0x65582185, 0x68ab9802, 0xeecea50f,
                                    0xdb2f953b, 0x2aef7dad, 0x5b6e2f84,
                                    0x1521b628, 0x29076170, 0xecdd4775,
                                    0x619f1510, 0x13cca830, 0xeb61bd96,
                                    0x0334fe1e, 0xaa0363cf, 0xb5735c90,
                                    0x4c70a239, 0xd59e9e0b, 0xcbaade14,
                                    0xeecc86bc, 0x60622ca7, 0x9cab5cab,
                                    0xb2f3846e, 0x648b1eaf, 0x19bdf0ca,
                                    0xa02369b9, 0x655abb50, 0x40685a32,
                                    0x3c2ab4b3, 0x319ee9d5, 0xc021b8f7,
                                    0x9b540b19, 0x875fa099, 0x95f7997e,
                                    0x623d7da8, 0xf837889a, 0x97e32d77,
                                    0x11ed935f, 0x16681281, 0x0e358829,
                                    0xc7e61fd6, 0x96dedfa1, 0x7858ba99,
                                    0x57f584a5, 0x1b227263, 0x9b83c3ff,
                                    0x1ac24696, 0xcdb30aeb, 0x532e3054,
                                    0x8fd948e4, 0x6dbc3128, 0x58ebf2ef,
                                    0x34c6ffea, 0xfe28ed61, 0xee7c3c73,
                                    0x5d4a14d9, 0xe864b7e3, 0x42105d14,
                                    0x203e13e0, 0x45eee2b6, 0xa3aaabea,
                                    0xdb6c4f15, 0xfacb4fd0, 0xc742f442,
                                    0xef6abbb5, 0x654f3b1d, 0x41cd2105,
                                    0xd81e799e, 0x86854dc7, 0xe44b476a,
                                    0x3d816250, 0xcf62a1f2, 0x5b8d2646,
                                    0xfc8883a0, 0xc1c7b6a3, 0x7f1524c3,
                                    0x69cb7492, 0x47848a0b, 0x5692b285,
                                    0x095bbf00, 0xad19489d, 0x1462b174,
                                    0x23820e00, 0x58428d2a, 0x0c55f5ea,
                                    0x1dadf43e, 0x233f7061, 0x3372f092,
                                    0x8d937e41, 0xd65fecf1, 0x6c223bdb,
                                    0x7cde3759, 0xcbee7460, 0x4085f2a7,
                                    0xce77326e, 0xa6078084, 0x19f8509e,
                                    0xe8efd855, 0x61d99735, 0xa969a7aa,
                                    0xc50c06c2, 0x5a04abfc, 0x800bcadc,
                                    0x9e447a2e, 0xc3453484, 0xfdd56705,
                                    0x0e1e9ec9, 0xdb73dbd3, 0x105588cd,
                                    0x675fda79, 0xe3674340, 0xc5c43465,
                                    0x713e38d8, 0x3d28f89e, 0xf16dff20,
                                    0x153e21e7, 0x8fb03d4a, 0xe6e39f2b,
                                    0xdb83adf7 };

  /** Initial value of S-box 3. */
  private static final int[] KS2 = { 0xe93d5a68, 0x948140f7, 0xf64c261c,
                                    0x94692934, 0x411520f7, 0x7602d4f7,
                                    0xbcf46b2e, 0xd4a20068, 0xd4082471,
                                    0x3320f46a, 0x43b7d4b7, 0x500061af,
                                    0x1e39f62e, 0x97244546, 0x14214f74,
                                    0xbf8b8840, 0x4d95fc1d, 0x96b591af,
                                    0x70f4ddd3, 0x66a02f45, 0xbfbc09ec,
                                    0x03bd9785, 0x7fac6dd0, 0x31cb8504,
                                    0x96eb27b3, 0x55fd3941, 0xda2547e6,
                                    0xabca0a9a, 0x28507825, 0x530429f4,
                                    0x0a2c86da, 0xe9b66dfb, 0x68dc1462,