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Blowfish Encryption Source

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Apr 7th, 2011
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  1. Imports System
  2. Imports System.Text
  3. Imports System.IO
  4. Namespace Simias.Encryption
  5.     Public Class Blowfish
  6.         Const N As Integer = 16
  7.         Const KEYBYTES As Integer = 8
  8.  
  9.         Shared _P As Integer() = {&H243F6A88, &H85A308D3, &H13198A2E, &H3707344, &HA4093822, &H299F31D0, _
  10.          &H82EFA98, &HEC4E6C89, &H452821E6, &H38D01377, &HBE5466CF, &H34E90C6C, _
  11.          &HC0AC29B7, &HC97C50DD, &H3F84D5B5, &HB5470917, &H9216D5D9, &H8979FB1B}
  12.         Shared _S As Integer(,) = {{&HD1310BA6, &H98DFB5AC, &H2FFD72DB, &HD01ADFB7, &HB8E1AFED, &H6A267E96, _
  13.          &HBA7C9045, &HF12C7F99, &H24A19947, &HB3916CF7, &H801F2E2, &H858EFC16, _
  14.          &H636920D8, &H71574E69, &HA458FEA3, &HF4933D7E, &HD95748F, &H728EB658, _
  15.          &H718BCD58, &H82154AEE, &H7B54A41D, &HC25A59B5, &H9C30D539, &H2AF26013, _
  16.          &HC5D1B023, &H286085F0, &HCA417918, &HB8DB38EF, &H8E79DCB0, &H603A180E, _
  17.          &H6C9E0E8B, &HB01E8A3E, &HD71577C1, &HBD314B27, &H78AF2FDA, &H55605C60, _
  18.          &HE65525F3, &HAA55AB94, &H57489862, &H63E81440, &H55CA396A, &H2AAB10B6, _
  19.          &HB4CC5C34, &H1141E8CE, &HA15486AF, &H7C72E993, &HB3EE1411, &H636FBC2A, _
  20.          &H2BA9C55D, &H741831F6, &HCE5C3E16, &H9B87931E, &HAFD6BA33, &H6C24CF5C, _
  21.          &H7A325381, &H28958677, &H3B8F4898, &H6B4BB9AF, &HC4BFE81B, &H66282193, _
  22.          &H61D809CC, &HFB21A991, &H487CAC60, &H5DEC8032, &HEF845D5D, &HE98575B1, _
  23.          &HDC262302, &HEB651B88, &H23893E81, &HD396ACC5, &HF6D6FF3, &H83F44239, _
  24.          &H2E0B4482, &HA4842004, &H69C8F04A, &H9E1F9B5E, &H21C66842, &HF6E96C9A, _
  25.          &H670C9C61, &HABD388F0, &H6A51A0D2, &HD8542F68, &H960FA728, &HAB5133A3, _
  26.          &H6EEF0B6C, &H137A3BE4, &HBA3BF050, &H7EFB2A98, &HA1F1651D, &H39AF0176, _
  27.          &H66CA593E, &H82430E88, &H8CEE8619, &H456F9FB4, &H7D84A5C3, &H3B8B5EBE, _
  28.          &HE06F75D8, &H85C12073, &H401A449F, &H56C16AA6, &H4ED3AA62, &H363F7706, _
  29.          &H1BFEDF72, &H429B023D, &H37D0D724, &HD00A1248, &HDB0FEAD3, &H49F1C09B, _
  30.          &H75372C9, &H80991B7B, &H25D479D8, &HF6E8DEF7, &HE3FE501A, &HB6794C3B, _
  31.          &H976CE0BD, &H4C006BA, &HC1A94FB6, &H409F60C4, &H5E5C9EC2, &H196A2463, _
  32.          &H68FB6FAF, &H3E6C53B5, &H1339B2EB, &H3B52EC6F, &H6DFC511F, &H9B30952C, _
  33.          &HCC814544, &HAF5EBD09, &HBEE3D004, &HDE334AFD, &H660F2807, &H192E4BB3, _
  34.          &HC0CBA857, &H45C8740F, &HD20B5F39, &HB9D3FBDB, &H5579C0BD, &H1A60320A, _
  35.          &HD6A100C6, &H402C7279, &H679F25FE, &HFB1FA3CC, &H8EA5E9F8, &HDB3222F8, _
  36.          &H3C7516DF, &HFD616B15, &H2F501EC8, &HAD0552AB, &H323DB5FA, &HFD238760, _
  37.          &H53317B48, &H3E00DF82, &H9E5C57BB, &HCA6F8CA0, &H1A87562E, &HDF1769DB, _
  38.          &HD542A8F6, &H287EFFC3, &HAC6732C6, &H8C4F5573, &H695B27B0, &HBBCA58C8, _
  39.          &HE1FFA35D, &HB8F011A0, &H10FA3D98, &HFD2183B8, &H4AFCB56C, &H2DD1D35B, _
  40.          &H9A53E479, &HB6F84565, &HD28E49BC, &H4BFB9790, &HE1DDF2DA, &HA4CB7E33, _
  41.          &H62FB1341, &HCEE4C6E8, &HEF20CADA, &H36774C01, &HD07E9EFE, &H2BF11FB4, _
  42.          &H95DBDA4D, &HAE909198, &HEAAD8E71, &H6B93D5A0, &HD08ED1D0, &HAFC725E0, _
  43.          &H8E3C5B2F, &H8E7594B7, &H8FF6E2FB, &HF2122B64, &H8888B812, &H900DF01C, _
  44.          &H4FAD5EA0, &H688FC31C, &HD1CFF191, &HB3A8C1AD, &H2F2F2218, &HBE0E1777, _
  45.          &HEA752DFE, &H8B021FA1, &HE5A0CC0F, &HB56F74E8, &H18ACF3D6, &HCE89E299, _
  46.          &HB4A84FE0, &HFD13E0B7, &H7CC43B81, &HD2ADA8D9, &H165FA266, &H80957705, _
  47.          &H93CC7314, &H211A1477, &HE6AD2065, &H77B5FA86, &HC75442F5, &HFB9D35CF, _
  48.          &HEBCDAF0C, &H7B3E89A0, &HD6411BD3, &HAE1E7E49, &H250E2D, &H2071B35E, _
  49.          &H226800BB, &H57B8E0AF, &H2464369B, &HF009B91E, &H5563911D, &H59DFA6AA, _
  50.          &H78C14389, &HD95A537F, &H207D5BA2, &H2E5B9C5, &H83260376, &H6295CFA9, _
  51.          &H11C81968, &H4E734A41, &HB3472DCA, &H7B14A94A, &H1B510052, &H9A532915, _
  52.          &HD60F573F, &HBC9BC6E4, &H2B60A476, &H81E67400, &H8BA6FB5, &H571BE91F, _
  53.          &HF296EC6B, &H2A0DD915, &HB6636521, &HE7B9F9B6, &HFF34052E, &HC5855664, _
  54.          &H53B02D5D, &HA99F8FA1, &H8BA4799, &H6E85076A}, {&H4B7A70E9, &HB5B32944, &HDB75092E, &HC4192623, &HAD6EA6B0, &H49A7DF7D, _
  55.          &H9CEE60B8, &H8FEDB266, &HECAA8C71, &H699A17FF, &H5664526C, &HC2B19EE1, _
  56.          &H193602A5, &H75094C29, &HA0591340, &HE4183A3E, &H3F54989A, &H5B429D65, _
  57.          &H6B8FE4D6, &H99F73FD6, &HA1D29C07, &HEFE830F5, &H4D2D38E6, &HF0255DC1, _
  58.          &H4CDD2086, &H8470EB26, &H6382E9C6, &H21ECC5E, &H9686B3F, &H3EBAEFC9, _
  59.          &H3C971814, &H6B6A70A1, &H687F3584, &H52A0E286, &HB79C5305, &HAA500737, _
  60.          &H3E07841C, &H7FDEAE5C, &H8E7D44EC, &H5716F2B8, &HB03ADA37, &HF0500C0D, _
  61.          &HF01C1F04, &H200B3FF, &HAE0CF51A, &H3CB574B2, &H25837A58, &HDC0921BD, _
  62.          &HD19113F9, &H7CA92FF6, &H94324773, &H22F54701, &H3AE5E581, &H37C2DADC, _
  63.          &HC8B57634, &H9AF3DDA7, &HA9446146, &HFD0030E, &HECC8C73E, &HA4751E41, _
  64.          &HE238CD99, &H3BEA0E2F, &H3280BBA1, &H183EB331, &H4E548B38, &H4F6DB908, _
  65.          &H6F420D03, &HF60A04BF, &H2CB81290, &H24977C79, &H5679B072, &HBCAF89AF, _
  66.          &HDE9A771F, &HD9930810, &HB38BAE12, &HDCCF3F2E, &H5512721F, &H2E6B7124, _
  67.          &H501ADDE6, &H9F84CD87, &H7A584718, &H7408DA17, &HBC9F9ABC, &HE94B7D8C, _
  68.          &HEC7AEC3A, &HDB851DFA, &H63094366, &HC464C3D2, &HEF1C1847, &H3215D908, _
  69.          &HDD433B37, &H24C2BA16, &H12A14D43, &H2A65C451, &H50940002, &H133AE4DD, _
  70.          &H71DFF89E, &H10314E55, &H81AC77D6, &H5F11199B, &H43556F1, &HD7A3C76B, _
  71.          &H3C11183B, &H5924A509, &HF28FE6ED, &H97F1FBFA, &H9EBABF2C, &H1E153C6E, _
  72.          &H86E34570, &HEAE96FB1, &H860E5E0A, &H5A3E2AB3, &H771FE71C, &H4E3D06FA, _
  73.          &H2965DCB9, &H99E71D0F, &H803E89D6, &H5266C825, &H2E4CC978, &H9C10B36A, _
  74.          &HC6150EBA, &H94E2EA78, &HA5FC3C53, &H1E0A2DF4, &HF2F74EA7, &H361D2B3D, _
  75.          &H1939260F, &H19C27960, &H5223A708, &HF71312B6, &HEBADFE6E, &HEAC31F66, _
  76.          &HE3BC4595, &HA67BC883, &HB17F37D1, &H18CFF28, &HC332DDEF, &HBE6C5AA5, _
  77.          &H65582185, &H68AB9802, &HEECEA50F, &HDB2F953B, &H2AEF7DAD, &H5B6E2F84, _
  78.          &H1521B628, &H29076170, &HECDD4775, &H619F1510, &H13CCA830, &HEB61BD96, _
  79.          &H334FE1E, &HAA0363CF, &HB5735C90, &H4C70A239, &HD59E9E0B, &HCBAADE14, _
  80.          &HEECC86BC, &H60622CA7, &H9CAB5CAB, &HB2F3846E, &H648B1EAF, &H19BDF0CA, _
  81.          &HA02369B9, &H655ABB50, &H40685A32, &H3C2AB4B3, &H319EE9D5, &HC021B8F7, _
  82.          &H9B540B19, &H875FA099, &H95F7997E, &H623D7DA8, &HF837889A, &H97E32D77, _
  83.          &H11ED935F, &H16681281, &HE358829, &HC7E61FD6, &H96DEDFA1, &H7858BA99, _
  84.          &H57F584A5, &H1B227263, &H9B83C3FF, &H1AC24696, &HCDB30AEB, &H532E3054, _
  85.          &H8FD948E4, &H6DBC3128, &H58EBF2EF, &H34C6FFEA, &HFE28ED61, &HEE7C3C73, _
  86.          &H5D4A14D9, &HE864B7E3, &H42105D14, &H203E13E0, &H45EEE2B6, &HA3AAABEA, _
  87.          &HDB6C4F15, &HFACB4FD0, &HC742F442, &HEF6ABBB5, &H654F3B1D, &H41CD2105, _
  88.          &HD81E799E, &H86854DC7, &HE44B476A, &H3D816250, &HCF62A1F2, &H5B8D2646, _
  89.          &HFC8883A0, &HC1C7B6A3, &H7F1524C3, &H69CB7492, &H47848A0B, &H5692B285, _
  90.          &H95BBF00, &HAD19489D, &H1462B174, &H23820E00, &H58428D2A, &HC55F5EA, _
  91.          &H1DADF43E, &H233F7061, &H3372F092, &H8D937E41, &HD65FECF1, &H6C223BDB, _
  92.          &H7CDE3759, &HCBEE7460, &H4085F2A7, &HCE77326E, &HA6078084, &H19F8509E, _
  93.          &HE8EFD855, &H61D99735, &HA969A7AA, &HC50C06C2, &H5A04ABFC, &H800BCADC, _
  94.          &H9E447A2E, &HC3453484, &HFDD56705, &HE1E9EC9, &HDB73DBD3, &H105588CD, _
  95.          &H675FDA79, &HE3674340, &HC5C43465, &H713E38D8, &H3D28F89E, &HF16DFF20, _
  96.          &H153E21E7, &H8FB03D4A, &HE6E39F2B, &HDB83ADF7}, {&HE93D5A68, &H948140F7, &HF64C261C, &H94692934, &H411520F7, &H7602D4F7, _
  97.          &HBCF46B2E, &HD4A20068, &HD4082471, &H3320F46A, &H43B7D4B7, &H500061AF, _
  98.          &H1E39F62E, &H97244546, &H14214F74, &HBF8B8840, &H4D95FC1D, &H96B591AF, _
  99.          &H70F4DDD3, &H66A02F45, &HBFBC09EC, &H3BD9785, &H7FAC6DD0, &H31CB8504, _
  100.          &H96EB27B3, &H55FD3941, &HDA2547E6, &HABCA0A9A, &H28507825, &H530429F4, _
  101.          &HA2C86DA, &HE9B66DFB, &H68DC1462, &HD7486900, &H680EC0A4, &H27A18DEE, _
  102.          &H4F3FFEA2, &HE887AD8C, &HB58CE006, &H7AF4D6B6, &HAACE1E7C, &HD3375FEC, _
  103.          &HCE78A399, &H406B2A42, &H20FE9E35, &HD9F385B9, &HEE39D7AB, &H3B124E8B, _
  104.          &H1DC9FAF7, &H4B6D1856, &H26A36631, &HEAE397B2, &H3A6EFA74, &HDD5B4332, _
  105.          &H6841E7F7, &HCA7820FB, &HFB0AF54E, &HD8FEB397, &H454056AC, &HBA489527, _
  106.          &H55533A3A, &H20838D87, &HFE6BA9B7, &HD096954B, &H55A867BC, &HA1159A58, _
  107.          &HCCA92963, &H99E1DB33, &HA62A4A56, &H3F3125F9, &H5EF47E1C, &H9029317C, _
  108.          &HFDF8E802, &H4272F70, &H80BB155C, &H5282CE3, &H95C11548, &HE4C66D22, _
  109.          &H48C1133F, &HC70F86DC, &H7F9C9EE, &H41041F0F, &H404779A4, &H5D886E17, _
  110.          &H325F51EB, &HD59BC0D1, &HF2BCC18F, &H41113564, &H257B7834, &H602A9C60, _
  111.          &HDFF8E8A3, &H1F636C1B, &HE12B4C2, &H2E1329E, &HAF664FD1, &HCAD18115, _
  112.          &H6B2395E0, &H333E92E1, &H3B240B62, &HEEBEB922, &H85B2A20E, &HE6BA0D99, _
  113.          &HDE720C8C, &H2DA2F728, &HD0127845, &H95B794FD, &H647D0862, &HE7CCF5F0, _
  114.          &H5449A36F, &H877D48FA, &HC39DFD27, &HF33E8D1E, &HA476341, &H992EFF74, _
  115.          &H3A6F6EAB, &HF4F8FD37, &HA812DC60, &HA1EBDDF8, &H991BE14C, &HDB6E6B0D, _
  116.          &HC67B5510, &H6D672C37, &H2765D43B, &HDCD0E804, &HF1290DC7, &HCC00FFA3, _
  117.          &HB5390F92, &H690FED0B, &H667B9FFB, &HCEDB7D9C, &HA091CF0B, &HD9155EA3, _
  118.          &HBB132F88, &H515BAD24, &H7B9479BF, &H763BD6EB, &H37392EB3, &HCC115979, _
  119.          &H8026E297, &HF42E312D, &H6842ADA7, &HC66A2B3B, &H12754CCC, &H782EF11C, _
  120.          &H6A124237, &HB79251E7, &H6A1BBE6, &H4BFB6350, &H1A6B1018, &H11CAEDFA, _
  121.          &H3D25BDD8, &HE2E1C3C9, &H44421659, &HA121386, &HD90CEC6E, &HD5ABEA2A, _
  122.          &H64AF674E, &HDA86A85F, &HBEBFE988, &H64E4C3FE, &H9DBC8057, &HF0F7C086, _
  123.          &H60787BF8, &H6003604D, &HD1FD8346, &HF6381FB0, &H7745AE04, &HD736FCCC, _
  124.          &H83426B33, &HF01EAB71, &HB0804187, &H3C005E5F, &H77A057BE, &HBDE8AE24, _
  125.          &H55464299, &HBF582E61, &H4E58F48F, &HF2DDFDA2, &HF474EF38, &H8789BDC2, _
  126.          &H5366F9C3, &HC8B38E74, &HB475F255, &H46FCD9B9, &H7AEB2661, &H8B1DDF84, _
  127.          &H846A0E79, &H915F95E2, &H466E598E, &H20B45770, &H8CD55591, &HC902DE4C, _
  128.          &HB90BACE1, &HBB8205D0, &H11A86248, &H7574A99E, &HB77F19B6, &HE0A9DC09, _
  129.          &H662D09A1, &HC4324633, &HE85A1F02, &H9F0BE8C, &H4A99A025, &H1D6EFE10, _
  130.          &H1AB93D1D, &HBA5A4DF, &HA186F20F, &H2868F169, &HDCB7DA83, &H573906FE, _
  131.          &HA1E2CE9B, &H4FCD7F52, &H50115E01, &HA70683FA, &HA002B5C4, &HDE6D027, _
  132.          &H9AF88C27, &H773F8641, &HC3604C06, &H61A806B5, &HF0177A28, &HC0F586E0, _
  133.          &H6058AA, &H30DC7D62, &H11E69ED7, &H2338EA63, &H53C2DD94, &HC2C21634, _
  134.          &HBBCBEE56, &H90BCB6DE, &HEBFC7DA1, &HCE591D76, &H6F05E409, &H4B7C0188, _
  135.          &H39720A3D, &H7C927C24, &H86E3725F, &H724D9DB9, &H1AC15BB4, &HD39EB8FC, _
  136.          &HED545578, &H8FCA5B5, &HD83D7CD3, &H4DAD0FC4, &H1E50EF5E, &HB161E6F8, _
  137.          &HA28514D9, &H6C51133C, &H6FD5C7E7, &H56E14EC4, &H362ABFCE, &HDDC6C837, _
  138.          &HD79A3234, &H92638212, &H670EFA8E, &H406000E0}, {&H3A39CE37, &HD3FAF5CF, &HABC27737, &H5AC52D1B, &H5CB0679E, &H4FA33742, _
  139.          &HD3822740, &H99BC9BBE, &HD5118E9D, &HBF0F7315, &HD62D1C7E, &HC700C47B, _
  140.          &HB78C1B6B, &H21A19045, &HB26EB1BE, &H6A366EB4, &H5748AB2F, &HBC946E79, _
  141.          &HC6A376D2, &H6549C2C8, &H530FF8EE, &H468DDE7D, &HD5730A1D, &H4CD04DC6, _
  142.          &H2939BBDB, &HA9BA4650, &HAC9526E8, &HBE5EE304, &HA1FAD5F0, &H6A2D519A, _
  143.          &H63EF8CE2, &H9A86EE22, &HC089C2B8, &H43242EF6, &HA51E03AA, &H9CF2D0A4, _
  144.          &H83C061BA, &H9BE96A4D, &H8FE51550, &HBA645BD6, &H2826A2F9, &HA73A3AE1, _
  145.          &H4BA99586, &HEF5562E9, &HC72FEFD3, &HF752F7DA, &H3F046F69, &H77FA0A59, _
  146.          &H80E4A915, &H87B08601, &H9B09E6AD, &H3B3EE593, &HE990FD5A, &H9E34D797, _
  147.          &H2CF0B7D9, &H22B8B51, &H96D5AC3A, &H17DA67D, &HD1CF3ED6, &H7C7D2D28, _
  148.          &H1F9F25CF, &HADF2B89B, &H5AD6B472, &H5A88F54C, &HE029AC71, &HE019A5E6, _
  149.          &H47B0ACFD, &HED93FA9B, &HE8D3C48D, &H283B57CC, &HF8D56629, &H79132E28, _
  150.          &H785F0191, &HED756055, &HF7960E44, &HE3D35E8C, &H15056DD4, &H88F46DBA, _
  151.          &H3A16125, &H564F0BD, &HC3EB9E15, &H3C9057A2, &H97271AEC, &HA93A072A, _
  152.          &H1B3F6D9B, &H1E6321F5, &HF59C66FB, &H26DCF319, &H7533D928, &HB155FDF5, _
  153.          &H3563482, &H8ABA3CBB, &H28517711, &HC20AD9F8, &HABCC5167, &HCCAD925F, _
  154.          &H4DE81751, &H3830DC8E, &H379D5862, &H9320F991, &HEA7A90C2, &HFB3E7BCE, _
  155.          &H5121CE64, &H774FBE32, &HA8B6E37E, &HC3293D46, &H48DE5369, &H6413E680, _
  156.          &HA2AE0810, &HDD6DB224, &H69852DFD, &H9072166, &HB39A460A, &H6445C0DD, _
  157.          &H586CDECF, &H1C20C8AE, &H5BBEF7DD, &H1B588D40, &HCCD2017F, &H6BB4E3BB, _
  158.          &HDDA26A7E, &H3A59FF45, &H3E350A44, &HBCB4CDD5, &H72EACEA8, &HFA6484BB, _
  159.          &H8D6612AE, &HBF3C6F47, &HD29BE463, &H542F5D9E, &HAEC2771B, &HF64E6370, _
  160.          &H740E0D8D, &HE75B1357, &HF8721671, &HAF537D5D, &H4040CB08, &H4EB4E2CC, _
  161.          &H34D2466A, &H115AF84, &HE1B00428, &H95983A1D, &H6B89FB4, &HCE6EA048, _
  162.          &H6F3F3B82, &H3520AB82, &H11A1D4B, &H277227F8, &H611560B1, &HE7933FDC, _
  163.          &HBB3A792B, &H344525BD, &HA08839E1, &H51CE794B, &H2F32C9B7, &HA01FBAC9, _
  164.          &HE01CC87E, &HBCC7D1F6, &HCF0111C3, &HA1E8AAC7, &H1A908749, &HD44FBD9A, _
  165.          &HD0DADECB, &HD50ADA38, &H339C32A, &HC6913667, &H8DF9317C, &HE0B12B4F, _
  166.          &HF79E59B7, &H43F5BB3A, &HF2D519FF, &H27D9459C, &HBF97222C, &H15E6FC2A, _
  167.          &HF91FC71, &H9B941525, &HFAE59361, &HCEB69CEB, &HC2A86459, &H12BAA8D1, _
  168.          &HB6C1075E, &HE3056A0C, &H10D25065, &HCB03A442, &HE0EC6E0E, &H1698DB3B, _
  169.          &H4C98A0BE, &H3278E964, &H9F1F9532, &HE0D392DF, &HD3A0342B, &H8971F21E, _
  170.          &H1B0A7441, &H4BA3348C, &HC5BE7120, &HC37632D8, &HDF359F8D, &H9B992F2E, _
  171.          &HE60B6F47, &HFE3F11D, &HE54CDA54, &H1EDAD891, &HCE6279CF, &HCD3E7E6F, _
  172.          &H1618B166, &HFD2C1D05, &H848FD2C5, &HF6FB2299, &HF523F357, &HA6327623, _
  173.          &H93A83531, &H56CCCD02, &HACF08162, &H5A75EBB5, &H6E163697, &H88D273CC, _
  174.          &HDE966292, &H81B949D0, &H4C50901B, &H71C65614, &HE6C6C7BD, &H327A140A, _
  175.          &H45E1D006, &HC3F27B9A, &HC9AA53FD, &H62A80F00, &HBB25BFE2, &H35BDD2F6, _
  176.          &H71126905, &HB2040222, &HB6CBCF7C, &HCD769C2B, &H53113EC0, &H1640E3D3, _
  177.          &H38ABBD60, &H2547ADF0, &HBA38209C, &HF746CE76, &H77AFA1C5, &H20756060, _
  178.          &H85CBFE4E, &H8AE88DD8, &H7AAAF9B0, &H4CF9AA7E, &H1948C25C, &H2FB8A8C, _
  179.          &H1C36AE4, &HD6EBE1F9, &H90D4F869, &HA65CDEA0, &H3F09252D, &HC208E69F, _
  180.          &HB74E6132, &HCE77E25B, &H578FDFE3, &H3AC372E6}}
  181.  
  182.         Private P As Integer()
  183.         Private S As Integer(,)
  184.         Public Sub New(ByVal key As Byte())
  185.             Dim i As Short
  186.             Dim j As Short
  187.             Dim k As Short
  188.             Dim data As UInteger
  189.             Dim datal As UInteger
  190.             Dim datar As UInteger
  191.  
  192.             P = TryCast(_P.Clone(), Integer())
  193.             S = TryCast(_S.Clone(), Integer(,))
  194.  
  195.             j = 0
  196.             For i = 0 To N + 1
  197.                 data = &H0
  198.                 For k = 0 To 3
  199.                     data = (data << 8) Or key(j)
  200.                     j += 1
  201.                     If j >= key.Length Then
  202.                         j = 0
  203.                     End If
  204.                 Next
  205.                 P(i) = P(i) Xor data
  206.             Next
  207.  
  208.             datal = &H0
  209.             datar = &H0
  210.  
  211.             For i = 0 To N + 1 Step 2
  212.                 Encipher(datal, datar)
  213.                 P(i) = datal
  214.                 P(i + 1) = datar
  215.             Next
  216.  
  217.             For i = 0 To 3
  218.                 For j = 0 To 255 Step 2
  219.                     Encipher(datal, datar)
  220.  
  221.                     S(i, j) = datal
  222.                     S(i, j + 1) = datar
  223.                 Next
  224.             Next
  225.         End Sub
  226.         Private Function F(ByVal x As UInteger) As UInteger
  227.             Dim a As UShort
  228.             Dim b As UShort
  229.             Dim c As UShort
  230.             Dim d As UShort
  231.             Dim y As UInteger
  232.  
  233.             d = CUShort((x And &HFF))
  234.             x >>= 8
  235.             c = CUShort((x And &HFF))
  236.             x >>= 8
  237.             b = CUShort((x And &HFF))
  238.             x >>= 8
  239.             a = CUShort((x And &HFF))
  240.             y = S(0, a) + S(1, b)
  241.             y = y Xor S(2, c)
  242.             y = y + S(3, d)
  243.  
  244.             Return y
  245.         End Function
  246.         Public Sub Encipher(ByVal data As Byte(), ByVal length As Integer)
  247.             Dim xl As UInteger, xr As UInteger
  248.             If (length Mod 8) <> 0 Then
  249.                 Throw New Exception("Invalid Length")
  250.             End If
  251.             For i As Integer = 0 To length - 1 Step 8
  252.                 xl = CUInt(((data(i) << 24) Or (data(i + 1) << 16) Or (data(i + 2) << 8) Or data(i + 3)))
  253.                 xr = CUInt(((data(i + 4) << 24) Or (data(i + 5) << 16) Or (data(i + 6) << 8) Or data(i + 7)))
  254.                 Encipher(xl, xr)
  255.                 data(i) = CByte((xl >> 24))
  256.                 data(i + 1) = CByte((xl >> 16))
  257.                 data(i + 2) = CByte((xl >> 8))
  258.                 data(i + 3) = CByte((xl))
  259.                 data(i + 4) = CByte((xr >> 24))
  260.                 data(i + 5) = CByte((xr >> 16))
  261.                 data(i + 6) = CByte((xr >> 8))
  262.                 data(i + 7) = CByte((xr))
  263.             Next
  264.         End Sub
  265.         Private Sub Encipher(ByRef xl__1 As UInteger, ByRef xr__2 As UInteger)
  266.             Dim Xl__3 As UInteger
  267.             Dim Xr__4 As UInteger
  268.             Dim temp As UInteger
  269.             Dim i As Short
  270.  
  271.             Xl__3 = xl__1
  272.             Xr__4 = xr__2
  273.  
  274.             For i = 0 To N - 1
  275.                 Xl__3 = Xl__3 Xor P(i)
  276.                 Xr__4 = F(Xl__3) Xor Xr__4
  277.  
  278.                 temp = Xl__3
  279.                 Xl__3 = Xr__4
  280.                 Xr__4 = temp
  281.             Next
  282.  
  283.             temp = Xl__3
  284.             Xl__3 = Xr__4
  285.             Xr__4 = temp
  286.  
  287.             Xr__4 = Xr__4 Xor P(N)
  288.             Xl__3 = Xl__3 Xor P(N + 1)
  289.  
  290.             xl__1 = Xl__3
  291.             xr__2 = Xr__4
  292.         End Sub
  293.         Public Sub Decipher(ByVal data As Byte(), ByVal length As Integer)
  294.             Dim xl As UInteger, xr As UInteger
  295.             If (length Mod 8) <> 0 Then
  296.                 Throw New Exception("Invalid Length")
  297.             End If
  298.             For i As Integer = 0 To length - 1 Step 8
  299.                 xl = CUInt(((data(i) << 24) Or (data(i + 1) << 16) Or (data(i + 2) << 8) Or data(i + 3)))
  300.                 xr = CUInt(((data(i + 4) << 24) Or (data(i + 5) << 16) Or (data(i + 6) << 8) Or data(i + 7)))
  301.                 Decipher(xl, xr)
  302.                 data(i) = CByte((xl >> 24))
  303.                 data(i + 1) = CByte((xl >> 16))
  304.                 data(i + 2) = CByte((xl >> 8))
  305.                 data(i + 3) = CByte((xl))
  306.                 data(i + 4) = CByte((xr >> 24))
  307.                 data(i + 5) = CByte((xr >> 16))
  308.                 data(i + 6) = CByte((xr >> 8))
  309.                 data(i + 7) = CByte((xr))
  310.             Next
  311.         End Sub
  312.         Private Sub Decipher(ByRef xl__1 As UInteger, ByRef xr__2 As UInteger)
  313.             Dim Xl__3 As UInteger
  314.             Dim Xr__4 As UInteger
  315.             Dim temp As UInteger
  316.             Dim i As Short
  317.  
  318.             Xl__3 = xl__1
  319.             Xr__4 = xr__2
  320.  
  321.             For i = N + 1 To 2 Step -1
  322.                 Xl__3 = Xl__3 Xor P(i)
  323.                 Xr__4 = F(Xl__3) Xor Xr__4
  324.  
  325.  
  326.                 temp = Xl__3
  327.                 Xl__3 = Xr__4
  328.                 Xr__4 = temp
  329.             Next
  330.  
  331.  
  332.             temp = Xl__3
  333.             Xl__3 = Xr__4
  334.             Xr__4 = temp
  335.  
  336.             Xr__4 = Xr__4 Xor P(1)
  337.             Xl__3 = Xl__3 Xor P(0)
  338.  
  339.             xl__1 = Xl__3
  340.             xr__2 = Xr__4
  341.         End Sub
  342.     End Class
  343.  
  344.     Public Class BlowfishStream
  345.         Inherits Stream
  346.         Private Class CBState
  347.             Friend callback As AsyncCallback
  348.             Friend state As Object
  349.             Friend buffer As Byte()
  350.             Friend result As IAsyncResult
  351.             Friend Sub New(ByVal callback As AsyncCallback, ByVal state As Object, ByVal buffer As Byte())
  352.                 Me.callback = callback
  353.                 Me.state = state
  354.                 Me.buffer = buffer
  355.             End Sub
  356. #Region "IAsyncResult Members"
  357.  
  358.             Public ReadOnly Property AsyncState() As Object
  359.                 Get
  360.                     Return state
  361.                 End Get
  362.             End Property
  363.  
  364.             Public ReadOnly Property CompletedSynchronously() As Boolean
  365.                 Get
  366.                     Return result.CompletedSynchronously
  367.                 End Get
  368.             End Property
  369.  
  370.             Public ReadOnly Property AsyncWaitHandle() As System.Threading.WaitHandle
  371.                 Get
  372.                     Return result.AsyncWaitHandle
  373.                 End Get
  374.             End Property
  375.  
  376.             Public ReadOnly Property IsCompleted() As Boolean
  377.                 Get
  378.                     Return result.IsCompleted
  379.                 End Get
  380.             End Property
  381.  
  382. #End Region
  383.         End Class
  384.  
  385.         Public Enum Terget
  386.             Encrypted
  387.             Normal
  388.         End Enum
  389.         Private stream As Stream
  390.         Private bf As Blowfish
  391.         Private Sub New(ByVal stream As Stream, ByVal bf As Blowfish)
  392.             Me.stream = stream
  393.             Me.bf = bf
  394.         End Sub
  395.         Public Overloads Overrides ReadOnly Property CanRead() As Boolean
  396.             Get
  397.                 Return stream.CanRead
  398.             End Get
  399.         End Property
  400.         Public Overloads Overrides ReadOnly Property CanSeek() As Boolean
  401.             Get
  402.                 Return stream.CanSeek
  403.             End Get
  404.         End Property
  405.         Public Overloads Overrides ReadOnly Property CanWrite() As Boolean
  406.             Get
  407.                 Return stream.CanWrite
  408.             End Get
  409.         End Property
  410.         Public Overloads Overrides ReadOnly Property Length() As Long
  411.             Get
  412.                 Return stream.Length
  413.             End Get
  414.         End Property
  415.         Public Overloads Overrides Property Position() As Long
  416.             Get
  417.                 Return stream.Position
  418.             End Get
  419.             Set(ByVal value As Long)
  420.                 stream.Position = value
  421.             End Set
  422.         End Property
  423.         Public Overloads Overrides Sub Flush()
  424.             stream.Flush()
  425.         End Sub
  426.         Public Overloads Overrides Function Read(ByVal buffer As Byte(), ByVal offset As Integer, ByVal count As Integer) As Integer
  427.             Dim bytesRead As Integer = stream.Read(buffer, offset, count)
  428.             Dim Target As String = ""
  429.             If Target = Terget.Normal Then
  430.                 bf.Encipher(buffer, bytesRead)
  431.             Else
  432.                 bf.Decipher(buffer, bytesRead)
  433.             End If
  434.             Return bytesRead
  435.         End Function
  436.         Public Overloads Overrides Sub Write(ByVal buffer As Byte(), ByVal offset As Integer, ByVal count As Integer)
  437.             Dim Target As String = ""
  438.             If Target = Terget.Normal Then
  439.                 bf.Decipher(buffer, count)
  440.             Else
  441.                 bf.Encipher(buffer, count)
  442.             End If
  443.             stream.Write(buffer, offset, count)
  444.         End Sub
  445.         Public Overloads Overrides Function BeginRead(ByVal buffer As Byte(), ByVal offset As Integer, ByVal count As Integer, ByVal callback As AsyncCallback, ByVal state As Object) As IAsyncResult
  446.             Dim cbs As New CBState(callback, state, buffer)
  447.             cbs.result = MyBase.BeginRead(buffer, offset, count, New AsyncCallback(AddressOf ReadComplete), cbs)
  448.             Return cbs
  449.         End Function
  450.         Public Overloads Overrides Function EndRead(ByVal asyncResult As IAsyncResult) As Integer
  451.             Dim cbs As CBState = DirectCast(asyncResult.AsyncState, CBState)
  452.             Dim bytesRead As Integer = MyBase.EndRead(cbs.result)
  453.             Dim Target As String = ""
  454.             If Target = Terget.Normal Then
  455.                 bf.Encipher(cbs.buffer, bytesRead)
  456.             Else
  457.                 bf.Decipher(cbs.buffer, bytesRead)
  458.             End If
  459.             Return bytesRead
  460.         End Function
  461.         Private Sub ReadComplete(ByVal result As IAsyncResult)
  462.             Dim cbs As CBState = DirectCast(result.AsyncState, CBState)
  463.             cbs.callback(cbs)
  464.         End Sub
  465.         Public Overloads Overrides Function BeginWrite(ByVal buffer As Byte(), ByVal offset As Integer, ByVal count As Integer, ByVal callback As AsyncCallback, ByVal state As Object) As IAsyncResult
  466.             Dim Target As String = ""
  467.             If Target = Terget.Normal Then
  468.                 bf.Decipher(buffer, count)
  469.             Else
  470.                 bf.Encipher(buffer, count)
  471.             End If
  472.             Return MyBase.BeginWrite(buffer, offset, count, callback, state)
  473.         End Function
  474.         Public Overloads Overrides Function Seek(ByVal offset As Long, ByVal origin As SeekOrigin) As Long
  475.             Return stream.Seek(offset, origin)
  476.         End Function
  477.         Public Overloads Overrides Sub SetLength(ByVal value As Long)
  478.             stream.SetLength(value)
  479.         End Sub
  480.     End Class
  481. End Namespace
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