[Summary view]

   1  <?php
   2  /**
   3   * Copyright 2005-2008 Matthew Fonda <mfonda@php.net>
   4   * Copyright 2012-2017 Horde LLC (http://www.horde.org/)
   5   *
   6   * See the enclosed file LICENSE for license information (LGPL). If you
   7   * did not receive this file, see http://www.horde.org/licenses/lgpl21.
   8   *
   9   * @author   Matthew Fonda <mfonda@php.net>
  10   * @author   Michael Slusarz <slusarz@horde.org>
  11   * @category Horde
  12   * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
  13   * @package  Crypt_Blowfish
  14   */
  15  
  16  /**
  17   * Base subclass for the PHP driver.
  18   *
  19   * @author    Matthew Fonda <mfonda@php.net>
  20   * @author    Michael Slusarz <slusarz@horde.org>
  21   * @category  Horde
  22   * @copyright 2005-2008 Matthew Fonda
  23   * @copyright 2012-2017 Horde LLC
  24   * @license   http://www.horde.org/licenses/lgpl21 LGPL 2.1
  25   * @package   Crypt_Blowfish
  26   */
  27  abstract class Horde_Crypt_Blowfish_Php_Base
  28  {
  29      /**
  30       * MD5 sum of the key used.
  31       *
  32       * @var string
  33       */
  34      public $md5;
  35  
  36      /**
  37       * P-Array contains 18 32-bit subkeys.
  38       *
  39       * @var array
  40       */
  41      protected $_P = array(
  42          0x243F6A88, 0x85A308D3, 0x13198A2E, 0x03707344,
  43          0xA4093822, 0x299F31D0, 0x082EFA98, 0xEC4E6C89,
  44          0x452821E6, 0x38D01377, 0xBE5466CF, 0x34E90C6C,
  45          0xC0AC29B7, 0xC97C50DD, 0x3F84D5B5, 0xB5470917,
  46          0x9216D5D9, 0x8979FB1B
  47      );
  48  
  49      /**
  50       * Array of four S-Blocks each containing 256 32-bit entries.
  51       *
  52       * @var array
  53       */
  54      protected $_S = array(
  55          array(
  56              0xD1310BA6, 0x98DFB5AC, 0x2FFD72DB, 0xD01ADFB7,
  57              0xB8E1AFED, 0x6A267E96, 0xBA7C9045, 0xF12C7F99,
  58              0x24A19947, 0xB3916CF7, 0x0801F2E2, 0x858EFC16,
  59              0x636920D8, 0x71574E69, 0xA458FEA3, 0xF4933D7E,
  60              0x0D95748F, 0x728EB658, 0x718BCD58, 0x82154AEE,
  61              0x7B54A41D, 0xC25A59B5, 0x9C30D539, 0x2AF26013,
  62              0xC5D1B023, 0x286085F0, 0xCA417918, 0xB8DB38EF,
  63              0x8E79DCB0, 0x603A180E, 0x6C9E0E8B, 0xB01E8A3E,
  64              0xD71577C1, 0xBD314B27, 0x78AF2FDA, 0x55605C60,
  65              0xE65525F3, 0xAA55AB94, 0x57489862, 0x63E81440,
  66              0x55CA396A, 0x2AAB10B6, 0xB4CC5C34, 0x1141E8CE,
  67              0xA15486AF, 0x7C72E993, 0xB3EE1411, 0x636FBC2A,
  68              0x2BA9C55D, 0x741831F6, 0xCE5C3E16, 0x9B87931E,
  69              0xAFD6BA33, 0x6C24CF5C, 0x7A325381, 0x28958677,
  70              0x3B8F4898, 0x6B4BB9AF, 0xC4BFE81B, 0x66282193,
  71              0x61D809CC, 0xFB21A991, 0x487CAC60, 0x5DEC8032,
  72              0xEF845D5D, 0xE98575B1, 0xDC262302, 0xEB651B88,
  73              0x23893E81, 0xD396ACC5, 0x0F6D6FF3, 0x83F44239,
  74              0x2E0B4482, 0xA4842004, 0x69C8F04A, 0x9E1F9B5E,
  75              0x21C66842, 0xF6E96C9A, 0x670C9C61, 0xABD388F0,
  76              0x6A51A0D2, 0xD8542F68, 0x960FA728, 0xAB5133A3,
  77              0x6EEF0B6C, 0x137A3BE4, 0xBA3BF050, 0x7EFB2A98,
  78              0xA1F1651D, 0x39AF0176, 0x66CA593E, 0x82430E88,
  79              0x8CEE8619, 0x456F9FB4, 0x7D84A5C3, 0x3B8B5EBE,
  80              0xE06F75D8, 0x85C12073, 0x401A449F, 0x56C16AA6,
  81              0x4ED3AA62, 0x363F7706, 0x1BFEDF72, 0x429B023D,
  82              0x37D0D724, 0xD00A1248, 0xDB0FEAD3, 0x49F1C09B,
  83              0x075372C9, 0x80991B7B, 0x25D479D8, 0xF6E8DEF7,
  84              0xE3FE501A, 0xB6794C3B, 0x976CE0BD, 0x04C006BA,
  85              0xC1A94FB6, 0x409F60C4, 0x5E5C9EC2, 0x196A2463,
  86              0x68FB6FAF, 0x3E6C53B5, 0x1339B2EB, 0x3B52EC6F,
  87              0x6DFC511F, 0x9B30952C, 0xCC814544, 0xAF5EBD09,
  88              0xBEE3D004, 0xDE334AFD, 0x660F2807, 0x192E4BB3,
  89              0xC0CBA857, 0x45C8740F, 0xD20B5F39, 0xB9D3FBDB,
  90              0x5579C0BD, 0x1A60320A, 0xD6A100C6, 0x402C7279,
  91              0x679F25FE, 0xFB1FA3CC, 0x8EA5E9F8, 0xDB3222F8,
  92              0x3C7516DF, 0xFD616B15, 0x2F501EC8, 0xAD0552AB,
  93              0x323DB5FA, 0xFD238760, 0x53317B48, 0x3E00DF82,
  94              0x9E5C57BB, 0xCA6F8CA0, 0x1A87562E, 0xDF1769DB,
  95              0xD542A8F6, 0x287EFFC3, 0xAC6732C6, 0x8C4F5573,
  96              0x695B27B0, 0xBBCA58C8, 0xE1FFA35D, 0xB8F011A0,
  97              0x10FA3D98, 0xFD2183B8, 0x4AFCB56C, 0x2DD1D35B,
  98              0x9A53E479, 0xB6F84565, 0xD28E49BC, 0x4BFB9790,
  99              0xE1DDF2DA, 0xA4CB7E33, 0x62FB1341, 0xCEE4C6E8,
 100              0xEF20CADA, 0x36774C01, 0xD07E9EFE, 0x2BF11FB4,
 101              0x95DBDA4D, 0xAE909198, 0xEAAD8E71, 0x6B93D5A0,
 102              0xD08ED1D0, 0xAFC725E0, 0x8E3C5B2F, 0x8E7594B7,
 103              0x8FF6E2FB, 0xF2122B64, 0x8888B812, 0x900DF01C,
 104              0x4FAD5EA0, 0x688FC31C, 0xD1CFF191, 0xB3A8C1AD,
 105              0x2F2F2218, 0xBE0E1777, 0xEA752DFE, 0x8B021FA1,
 106              0xE5A0CC0F, 0xB56F74E8, 0x18ACF3D6, 0xCE89E299,
 107              0xB4A84FE0, 0xFD13E0B7, 0x7CC43B81, 0xD2ADA8D9,
 108              0x165FA266, 0x80957705, 0x93CC7314, 0x211A1477,
 109              0xE6AD2065, 0x77B5FA86, 0xC75442F5, 0xFB9D35CF,
 110              0xEBCDAF0C, 0x7B3E89A0, 0xD6411BD3, 0xAE1E7E49,
 111              0x00250E2D, 0x2071B35E, 0x226800BB, 0x57B8E0AF,
 112              0x2464369B, 0xF009B91E, 0x5563911D, 0x59DFA6AA,
 113              0x78C14389, 0xD95A537F, 0x207D5BA2, 0x02E5B9C5,
 114              0x83260376, 0x6295CFA9, 0x11C81968, 0x4E734A41,
 115              0xB3472DCA, 0x7B14A94A, 0x1B510052, 0x9A532915,
 116              0xD60F573F, 0xBC9BC6E4, 0x2B60A476, 0x81E67400,
 117              0x08BA6FB5, 0x571BE91F, 0xF296EC6B, 0x2A0DD915,
 118              0xB6636521, 0xE7B9F9B6, 0xFF34052E, 0xC5855664,
 119              0x53B02D5D, 0xA99F8FA1, 0x08BA4799, 0x6E85076A
 120          ), array(
 121              0x4B7A70E9, 0xB5B32944, 0xDB75092E, 0xC4192623,
 122              0xAD6EA6B0, 0x49A7DF7D, 0x9CEE60B8, 0x8FEDB266,
 123              0xECAA8C71, 0x699A17FF, 0x5664526C, 0xC2B19EE1,
 124              0x193602A5, 0x75094C29, 0xA0591340, 0xE4183A3E,
 125              0x3F54989A, 0x5B429D65, 0x6B8FE4D6, 0x99F73FD6,
 126              0xA1D29C07, 0xEFE830F5, 0x4D2D38E6, 0xF0255DC1,
 127              0x4CDD2086, 0x8470EB26, 0x6382E9C6, 0x021ECC5E,
 128              0x09686B3F, 0x3EBAEFC9, 0x3C971814, 0x6B6A70A1,
 129              0x687F3584, 0x52A0E286, 0xB79C5305, 0xAA500737,
 130              0x3E07841C, 0x7FDEAE5C, 0x8E7D44EC, 0x5716F2B8,
 131              0xB03ADA37, 0xF0500C0D, 0xF01C1F04, 0x0200B3FF,
 132              0xAE0CF51A, 0x3CB574B2, 0x25837A58, 0xDC0921BD,
 133              0xD19113F9, 0x7CA92FF6, 0x94324773, 0x22F54701,
 134              0x3AE5E581, 0x37C2DADC, 0xC8B57634, 0x9AF3DDA7,
 135              0xA9446146, 0x0FD0030E, 0xECC8C73E, 0xA4751E41,
 136              0xE238CD99, 0x3BEA0E2F, 0x3280BBA1, 0x183EB331,
 137              0x4E548B38, 0x4F6DB908, 0x6F420D03, 0xF60A04BF,
 138              0x2CB81290, 0x24977C79, 0x5679B072, 0xBCAF89AF,
 139              0xDE9A771F, 0xD9930810, 0xB38BAE12, 0xDCCF3F2E,
 140              0x5512721F, 0x2E6B7124, 0x501ADDE6, 0x9F84CD87,
 141              0x7A584718, 0x7408DA17, 0xBC9F9ABC, 0xE94B7D8C,
 142              0xEC7AEC3A, 0xDB851DFA, 0x63094366, 0xC464C3D2,
 143              0xEF1C1847, 0x3215D908, 0xDD433B37, 0x24C2BA16,
 144              0x12A14D43, 0x2A65C451, 0x50940002, 0x133AE4DD,
 145              0x71DFF89E, 0x10314E55, 0x81AC77D6, 0x5F11199B,
 146              0x043556F1, 0xD7A3C76B, 0x3C11183B, 0x5924A509,
 147              0xF28FE6ED, 0x97F1FBFA, 0x9EBABF2C, 0x1E153C6E,
 148              0x86E34570, 0xEAE96FB1, 0x860E5E0A, 0x5A3E2AB3,
 149              0x771FE71C, 0x4E3D06FA, 0x2965DCB9, 0x99E71D0F,
 150              0x803E89D6, 0x5266C825, 0x2E4CC978, 0x9C10B36A,
 151              0xC6150EBA, 0x94E2EA78, 0xA5FC3C53, 0x1E0A2DF4,
 152              0xF2F74EA7, 0x361D2B3D, 0x1939260F, 0x19C27960,
 153              0x5223A708, 0xF71312B6, 0xEBADFE6E, 0xEAC31F66,
 154              0xE3BC4595, 0xA67BC883, 0xB17F37D1, 0x018CFF28,
 155              0xC332DDEF, 0xBE6C5AA5, 0x65582185, 0x68AB9802,
 156              0xEECEA50F, 0xDB2F953B, 0x2AEF7DAD, 0x5B6E2F84,
 157              0x1521B628, 0x29076170, 0xECDD4775, 0x619F1510,
 158              0x13CCA830, 0xEB61BD96, 0x0334FE1E, 0xAA0363CF,
 159              0xB5735C90, 0x4C70A239, 0xD59E9E0B, 0xCBAADE14,
 160              0xEECC86BC, 0x60622CA7, 0x9CAB5CAB, 0xB2F3846E,
 161              0x648B1EAF, 0x19BDF0CA, 0xA02369B9, 0x655ABB50,
 162              0x40685A32, 0x3C2AB4B3, 0x319EE9D5, 0xC021B8F7,
 163              0x9B540B19, 0x875FA099, 0x95F7997E, 0x623D7DA8,
 164              0xF837889A, 0x97E32D77, 0x11ED935F, 0x16681281,
 165              0x0E358829, 0xC7E61FD6, 0x96DEDFA1, 0x7858BA99,
 166              0x57F584A5, 0x1B227263, 0x9B83C3FF, 0x1AC24696,
 167              0xCDB30AEB, 0x532E3054, 0x8FD948E4, 0x6DBC3128,
 168              0x58EBF2EF, 0x34C6FFEA, 0xFE28ED61, 0xEE7C3C73,
 169              0x5D4A14D9, 0xE864B7E3, 0x42105D14, 0x203E13E0,
 170              0x45EEE2B6, 0xA3AAABEA, 0xDB6C4F15, 0xFACB4FD0,
 171              0xC742F442, 0xEF6ABBB5, 0x654F3B1D, 0x41CD2105,
 172              0xD81E799E, 0x86854DC7, 0xE44B476A, 0x3D816250,
 173              0xCF62A1F2, 0x5B8D2646, 0xFC8883A0, 0xC1C7B6A3,
 174              0x7F1524C3, 0x69CB7492, 0x47848A0B, 0x5692B285,
 175              0x095BBF00, 0xAD19489D, 0x1462B174, 0x23820E00,
 176              0x58428D2A, 0x0C55F5EA, 0x1DADF43E, 0x233F7061,
 177              0x3372F092, 0x8D937E41, 0xD65FECF1, 0x6C223BDB,
 178              0x7CDE3759, 0xCBEE7460, 0x4085F2A7, 0xCE77326E,
 179              0xA6078084, 0x19F8509E, 0xE8EFD855, 0x61D99735,
 180              0xA969A7AA, 0xC50C06C2, 0x5A04ABFC, 0x800BCADC,
 181              0x9E447A2E, 0xC3453484, 0xFDD56705, 0x0E1E9EC9,
 182              0xDB73DBD3, 0x105588CD, 0x675FDA79, 0xE3674340,
 183              0xC5C43465, 0x713E38D8, 0x3D28F89E, 0xF16DFF20,
 184              0x153E21E7, 0x8FB03D4A, 0xE6E39F2B, 0xDB83ADF7
 185          ), array(
 186              0xE93D5A68, 0x948140F7, 0xF64C261C, 0x94692934,
 187              0x411520F7, 0x7602D4F7, 0xBCF46B2E, 0xD4A20068,
 188              0xD4082471, 0x3320F46A, 0x43B7D4B7, 0x500061AF,
 189              0x1E39F62E, 0x97244546, 0x14214F74, 0xBF8B8840,
 190              0x4D95FC1D, 0x96B591AF, 0x70F4DDD3, 0x66A02F45,
 191              0xBFBC09EC, 0x03BD9785, 0x7FAC6DD0, 0x31CB8504,
 192              0x96EB27B3, 0x55FD3941, 0xDA2547E6, 0xABCA0A9A,
 193              0x28507825, 0x530429F4, 0x0A2C86DA, 0xE9B66DFB,
 194              0x68DC1462, 0xD7486900, 0x680EC0A4, 0x27A18DEE,
 195              0x4F3FFEA2, 0xE887AD8C, 0xB58CE006, 0x7AF4D6B6,
 196              0xAACE1E7C, 0xD3375FEC, 0xCE78A399, 0x406B2A42,
 197              0x20FE9E35, 0xD9F385B9, 0xEE39D7AB, 0x3B124E8B,
 198              0x1DC9FAF7, 0x4B6D1856, 0x26A36631, 0xEAE397B2,
 199              0x3A6EFA74, 0xDD5B4332, 0x6841E7F7, 0xCA7820FB,
 200              0xFB0AF54E, 0xD8FEB397, 0x454056AC, 0xBA489527,
 201              0x55533A3A, 0x20838D87, 0xFE6BA9B7, 0xD096954B,
 202              0x55A867BC, 0xA1159A58, 0xCCA92963, 0x99E1DB33,
 203              0xA62A4A56, 0x3F3125F9, 0x5EF47E1C, 0x9029317C,
 204              0xFDF8E802, 0x04272F70, 0x80BB155C, 0x05282CE3,
 205              0x95C11548, 0xE4C66D22, 0x48C1133F, 0xC70F86DC,
 206              0x07F9C9EE, 0x41041F0F, 0x404779A4, 0x5D886E17,
 207              0x325F51EB, 0xD59BC0D1, 0xF2BCC18F, 0x41113564,
 208              0x257B7834, 0x602A9C60, 0xDFF8E8A3, 0x1F636C1B,
 209              0x0E12B4C2, 0x02E1329E, 0xAF664FD1, 0xCAD18115,
 210              0x6B2395E0, 0x333E92E1, 0x3B240B62, 0xEEBEB922,
 211              0x85B2A20E, 0xE6BA0D99, 0xDE720C8C, 0x2DA2F728,
 212              0xD0127845, 0x95B794FD, 0x647D0862, 0xE7CCF5F0,
 213              0x5449A36F, 0x877D48FA, 0xC39DFD27, 0xF33E8D1E,
 214              0x0A476341, 0x992EFF74, 0x3A6F6EAB, 0xF4F8FD37,
 215              0xA812DC60, 0xA1EBDDF8, 0x991BE14C, 0xDB6E6B0D,
 216              0xC67B5510, 0x6D672C37, 0x2765D43B, 0xDCD0E804,
 217              0xF1290DC7, 0xCC00FFA3, 0xB5390F92, 0x690FED0B,
 218              0x667B9FFB, 0xCEDB7D9C, 0xA091CF0B, 0xD9155EA3,
 219              0xBB132F88, 0x515BAD24, 0x7B9479BF, 0x763BD6EB,
 220              0x37392EB3, 0xCC115979, 0x8026E297, 0xF42E312D,
 221              0x6842ADA7, 0xC66A2B3B, 0x12754CCC, 0x782EF11C,
 222              0x6A124237, 0xB79251E7, 0x06A1BBE6, 0x4BFB6350,
 223              0x1A6B1018, 0x11CAEDFA, 0x3D25BDD8, 0xE2E1C3C9,
 224              0x44421659, 0x0A121386, 0xD90CEC6E, 0xD5ABEA2A,
 225              0x64AF674E, 0xDA86A85F, 0xBEBFE988, 0x64E4C3FE,
 226              0x9DBC8057, 0xF0F7C086, 0x60787BF8, 0x6003604D,
 227              0xD1FD8346, 0xF6381FB0, 0x7745AE04, 0xD736FCCC,
 228              0x83426B33, 0xF01EAB71, 0xB0804187, 0x3C005E5F,
 229              0x77A057BE, 0xBDE8AE24, 0x55464299, 0xBF582E61,
 230              0x4E58F48F, 0xF2DDFDA2, 0xF474EF38, 0x8789BDC2,
 231              0x5366F9C3, 0xC8B38E74, 0xB475F255, 0x46FCD9B9,
 232              0x7AEB2661, 0x8B1DDF84, 0x846A0E79, 0x915F95E2,
 233              0x466E598E, 0x20B45770, 0x8CD55591, 0xC902DE4C,
 234              0xB90BACE1, 0xBB8205D0, 0x11A86248, 0x7574A99E,
 235              0xB77F19B6, 0xE0A9DC09, 0x662D09A1, 0xC4324633,
 236              0xE85A1F02, 0x09F0BE8C, 0x4A99A025, 0x1D6EFE10,
 237              0x1AB93D1D, 0x0BA5A4DF, 0xA186F20F, 0x2868F169,
 238              0xDCB7DA83, 0x573906FE, 0xA1E2CE9B, 0x4FCD7F52,
 239              0x50115E01, 0xA70683FA, 0xA002B5C4, 0x0DE6D027,
 240              0x9AF88C27, 0x773F8641, 0xC3604C06, 0x61A806B5,
 241              0xF0177A28, 0xC0F586E0, 0x006058AA, 0x30DC7D62,
 242              0x11E69ED7, 0x2338EA63, 0x53C2DD94, 0xC2C21634,
 243              0xBBCBEE56, 0x90BCB6DE, 0xEBFC7DA1, 0xCE591D76,
 244              0x6F05E409, 0x4B7C0188, 0x39720A3D, 0x7C927C24,
 245              0x86E3725F, 0x724D9DB9, 0x1AC15BB4, 0xD39EB8FC,
 246              0xED545578, 0x08FCA5B5, 0xD83D7CD3, 0x4DAD0FC4,
 247              0x1E50EF5E, 0xB161E6F8, 0xA28514D9, 0x6C51133C,
 248              0x6FD5C7E7, 0x56E14EC4, 0x362ABFCE, 0xDDC6C837,
 249              0xD79A3234, 0x92638212, 0x670EFA8E, 0x406000E0
 250          ), array(
 251              0x3A39CE37, 0xD3FAF5CF, 0xABC27737, 0x5AC52D1B,
 252              0x5CB0679E, 0x4FA33742, 0xD3822740, 0x99BC9BBE,
 253              0xD5118E9D, 0xBF0F7315, 0xD62D1C7E, 0xC700C47B,
 254              0xB78C1B6B, 0x21A19045, 0xB26EB1BE, 0x6A366EB4,
 255              0x5748AB2F, 0xBC946E79, 0xC6A376D2, 0x6549C2C8,
 256              0x530FF8EE, 0x468DDE7D, 0xD5730A1D, 0x4CD04DC6,
 257              0x2939BBDB, 0xA9BA4650, 0xAC9526E8, 0xBE5EE304,
 258              0xA1FAD5F0, 0x6A2D519A, 0x63EF8CE2, 0x9A86EE22,
 259              0xC089C2B8, 0x43242EF6, 0xA51E03AA, 0x9CF2D0A4,
 260              0x83C061BA, 0x9BE96A4D, 0x8FE51550, 0xBA645BD6,
 261              0x2826A2F9, 0xA73A3AE1, 0x4BA99586, 0xEF5562E9,
 262              0xC72FEFD3, 0xF752F7DA, 0x3F046F69, 0x77FA0A59,
 263              0x80E4A915, 0x87B08601, 0x9B09E6AD, 0x3B3EE593,
 264              0xE990FD5A, 0x9E34D797, 0x2CF0B7D9, 0x022B8B51,
 265              0x96D5AC3A, 0x017DA67D, 0xD1CF3ED6, 0x7C7D2D28,
 266              0x1F9F25CF, 0xADF2B89B, 0x5AD6B472, 0x5A88F54C,
 267              0xE029AC71, 0xE019A5E6, 0x47B0ACFD, 0xED93FA9B,
 268              0xE8D3C48D, 0x283B57CC, 0xF8D56629, 0x79132E28,
 269              0x785F0191, 0xED756055, 0xF7960E44, 0xE3D35E8C,
 270              0x15056DD4, 0x88F46DBA, 0x03A16125, 0x0564F0BD,
 271              0xC3EB9E15, 0x3C9057A2, 0x97271AEC, 0xA93A072A,
 272              0x1B3F6D9B, 0x1E6321F5, 0xF59C66FB, 0x26DCF319,
 273              0x7533D928, 0xB155FDF5, 0x03563482, 0x8ABA3CBB,
 274              0x28517711, 0xC20AD9F8, 0xABCC5167, 0xCCAD925F,
 275              0x4DE81751, 0x3830DC8E, 0x379D5862, 0x9320F991,
 276              0xEA7A90C2, 0xFB3E7BCE, 0x5121CE64, 0x774FBE32,
 277              0xA8B6E37E, 0xC3293D46, 0x48DE5369, 0x6413E680,
 278              0xA2AE0810, 0xDD6DB224, 0x69852DFD, 0x09072166,
 279              0xB39A460A, 0x6445C0DD, 0x586CDECF, 0x1C20C8AE,
 280              0x5BBEF7DD, 0x1B588D40, 0xCCD2017F, 0x6BB4E3BB,
 281              0xDDA26A7E, 0x3A59FF45, 0x3E350A44, 0xBCB4CDD5,
 282              0x72EACEA8, 0xFA6484BB, 0x8D6612AE, 0xBF3C6F47,
 283              0xD29BE463, 0x542F5D9E, 0xAEC2771B, 0xF64E6370,
 284              0x740E0D8D, 0xE75B1357, 0xF8721671, 0xAF537D5D,
 285              0x4040CB08, 0x4EB4E2CC, 0x34D2466A, 0x0115AF84,
 286              0xE1B00428, 0x95983A1D, 0x06B89FB4, 0xCE6EA048,
 287              0x6F3F3B82, 0x3520AB82, 0x011A1D4B, 0x277227F8,
 288              0x611560B1, 0xE7933FDC, 0xBB3A792B, 0x344525BD,
 289              0xA08839E1, 0x51CE794B, 0x2F32C9B7, 0xA01FBAC9,
 290              0xE01CC87E, 0xBCC7D1F6, 0xCF0111C3, 0xA1E8AAC7,
 291              0x1A908749, 0xD44FBD9A, 0xD0DADECB, 0xD50ADA38,
 292              0x0339C32A, 0xC6913667, 0x8DF9317C, 0xE0B12B4F,
 293              0xF79E59B7, 0x43F5BB3A, 0xF2D519FF, 0x27D9459C,
 294              0xBF97222C, 0x15E6FC2A, 0x0F91FC71, 0x9B941525,
 295              0xFAE59361, 0xCEB69CEB, 0xC2A86459, 0x12BAA8D1,
 296              0xB6C1075E, 0xE3056A0C, 0x10D25065, 0xCB03A442,
 297              0xE0EC6E0E, 0x1698DB3B, 0x4C98A0BE, 0x3278E964,
 298              0x9F1F9532, 0xE0D392DF, 0xD3A0342B, 0x8971F21E,
 299              0x1B0A7441, 0x4BA3348C, 0xC5BE7120, 0xC37632D8,
 300              0xDF359F8D, 0x9B992F2E, 0xE60B6F47, 0x0FE3F11D,
 301              0xE54CDA54, 0x1EDAD891, 0xCE6279CF, 0xCD3E7E6F,
 302              0x1618B166, 0xFD2C1D05, 0x848FD2C5, 0xF6FB2299,
 303              0xF523F357, 0xA6327623, 0x93A83531, 0x56CCCD02,
 304              0xACF08162, 0x5A75EBB5, 0x6E163697, 0x88D273CC,
 305              0xDE966292, 0x81B949D0, 0x4C50901B, 0x71C65614,
 306              0xE6C6C7BD, 0x327A140A, 0x45E1D006, 0xC3F27B9A,
 307              0xC9AA53FD, 0x62A80F00, 0xBB25BFE2, 0x35BDD2F6,
 308              0x71126905, 0xB2040222, 0xB6CBCF7C, 0xCD769C2B,
 309              0x53113EC0, 0x1640E3D3, 0x38ABBD60, 0x2547ADF0,
 310              0xBA38209C, 0xF746CE76, 0x77AFA1C5, 0x20756060,
 311              0x85CBFE4E, 0x8AE88DD8, 0x7AAAF9B0, 0x4CF9AA7E,
 312              0x1948C25C, 0x02FB8A8C, 0x01C36AE4, 0xD6EBE1F9,
 313              0x90D4F869, 0xA65CDEA0, 0x3F09252D, 0xC208E69F,
 314              0xB74E6132, 0xCE77E25B, 0x578FDFE3, 0x3AC372E6
 315          )
 316      );
 317  
 318      /**
 319       * Constructor.
 320       *
 321       * @param string $key  Encrpytion key.
 322       */
 323      public function __construct($key)
 324      {
 325          $data = $datal = $datar = $k = 0;
 326          $len = strlen($key);
 327  
 328          for ($i = 0; $i < 18; ++$i) {
 329              $data = 0;
 330              for ($j = 4; $j > 0; --$j) {
 331                  $data = $data << 8 | ord($key[$k]);
 332                  $k = ($k + 1) % $len;
 333              }
 334              $this->_P[$i] ^= $data;
 335          }
 336  
 337          for ($i = 0; $i <= 16; $i += 2) {
 338              $this->_encipher($datal, $datar);
 339              $this->_P[$i] = $datal;
 340              $this->_P[$i+1] = $datar;
 341          }
 342  
 343          for ($i = 0; $i < 256; $i += 2) {
 344              $this->_encipher($datal, $datar);
 345              $this->_S[0][$i] = $datal;
 346              $this->_S[0][$i+1] = $datar;
 347          }
 348  
 349          for ($i = 0; $i < 256; $i += 2) {
 350              $this->_encipher($datal, $datar);
 351              $this->_S[1][$i] = $datal;
 352              $this->_S[1][$i+1] = $datar;
 353          }
 354  
 355          for ($i = 0; $i < 256; $i += 2) {
 356              $this->_encipher($datal, $datar);
 357              $this->_S[2][$i] = $datal;
 358              $this->_S[2][$i+1] = $datar;
 359          }
 360  
 361          for ($i = 0; $i < 256; $i += 2) {
 362              $this->_encipher($datal, $datar);
 363              $this->_S[3][$i] = $datal;
 364              $this->_S[3][$i+1] = $datar;
 365          }
 366  
 367          $this->md5 = hash('md5', $key);
 368      }
 369  
 370      /**
 371       */
 372      abstract public function encrypt($text, $iv);
 373  
 374      /**
 375       */
 376      abstract public function decrypt($text, $iv);
 377  
 378      /**
 379       * Workaround for XOR on certain systems.
 380       *
 381       * @param integer|float $l
 382       * @param integer|float $r
 383       *
 384       * @return float
 385       */
 386      protected function _binxor($l, $r)
 387      {
 388          $x = (($l < 0) ? (float)($l + 4294967296) : (float)$l)
 389               ^ (($r < 0) ? (float)($r + 4294967296) : (float)$r);
 390  
 391          return (float)(($x < 0) ? $x + 4294967296 : $x);
 392      }
 393  
 394      /**
 395       * Enciphers a single 64-bit block.
 396       *
 397       * @param int &$Xl
 398       * @param int &$Xr
 399       */
 400      protected function _encipher(&$Xl, &$Xr)
 401      {
 402          if ($Xl < 0) {
 403              $Xl += 4294967296;
 404          }
 405  
 406          if ($Xr < 0) {
 407              $Xr += 4294967296;
 408          }
 409  
 410          for ($i = 0; $i < 16; ++$i) {
 411              $temp = $Xl ^ $this->_P[$i];
 412              if ($temp < 0) {
 413                  $temp += 4294967296;
 414              }
 415  
 416              $Xl = fmod((fmod($this->_S[0][($temp >> 24) & 255]
 417                               + $this->_S[1][($temp >> 16) & 255], 4294967296)
 418                          ^ $this->_S[2][($temp >> 8) & 255])
 419                         + $this->_S[3][$temp & 255], 4294967296) ^ $Xr;
 420              $Xr = $temp;
 421          }
 422  
 423          $Xr = $this->_binxor($Xl, $this->_P[16]);
 424          $Xl = $this->_binxor($temp, $this->_P[17]);
 425      }
 426  
 427      /**
 428       * Deciphers a single 64-bit block.
 429       *
 430       * @param int &$Xl
 431       * @param int &$Xr
 432       */
 433      protected function _decipher(&$Xl, &$Xr)
 434      {
 435          if ($Xl < 0) {
 436              $Xl += 4294967296;
 437          }
 438          if ($Xr < 0) {
 439              $Xr += 4294967296;
 440          }
 441  
 442          for ($i = 17; $i > 1; --$i) {
 443              $temp = $Xl ^ $this->_P[$i];
 444              if ($temp < 0) {
 445                  $temp += 4294967296;
 446              }
 447  
 448              $Xl = fmod((fmod($this->_S[0][($temp >> 24) & 255]
 449                               + $this->_S[1][($temp >> 16) & 255], 4294967296)
 450                          ^ $this->_S[2][($temp >> 8) & 255])
 451                         + $this->_S[3][$temp & 255], 4294967296) ^ $Xr;
 452              $Xr = $temp;
 453          }
 454  
 455          $Xr = $this->_binxor($Xl, $this->_P[1]);
 456          $Xl = $this->_binxor($temp, $this->_P[0]);
 457      }
 458  
 459  }