using?System;
using?System.Collections.Generic;
using?System.Text;

namespace?BlowfishClass
{
????public?class?Blowfish
????{
????????private?BlowfishCBC?m_bfish;

????????public?Blowfish（String?key）
????????{
????????????ASCIIEncoding?encoding?=?new?ASCIIEncoding（）;
????????????m_bfish?=?new?BlowfishCBC（encoding.GetBytes（key）?0L）;
????????}

????????~Blowfish（）
????????{
????????????m_bfish.CleanUp（）;
????????}

????????public?String?EncryptString（String?sPlainText）
????????{
????????????long?lCBCIV;
????????????Random?rm?=?new?Random（）;
????????????int?hi?=?rm.Next（）;
????????????int?lo?=?rm.Next（）;
????????????lCBCIV?=?PublicFuntion.MakeLong（lo?hi）;
????????????return?EncStr（sPlainText?lCBCIV）;
????????}
????????private?String?EncStr（String?sPlainText?long?lNewCBCIV）
????????{
????????????int?nStrLen?=?sPlainText.Length;
????????????byte[]?buf?=?new?byte[（nStrLen?<????????????int?nPos?=?0;
????????????for?（int?nI?=?0;?nI?????????????{
????????????????char?cActChar?=?sPlainText[nI];
????????????????buf[nPos++]?=?（byte）（cActChar?>>?8?&?0xff）;
????????????????buf[nPos++]?=?（byte）（cActChar?&?0xff）;
????????????}

????????????byte?bPadVal?=?（byte）（buf.Length?-?（nStrLen?<????????????while?（nPos?????????????{
????????????????buf[nPos++]?=?bPadVal;
????????????}
????????????m_bfish.SetCBCIV（lNewCBCIV）;
????????????m_bfish.Encrypt（buf）;
????????????byte[]?newCBCIV?=?new?byte[8];
????????????PublicFuntion.LongToByteArray（lNewCBCIV?newCBCIV?0）;
????????????return?PublicFuntion.BytesToBinHex（newCBCIV?0?8）?+?PublicFuntion.BytesToBinHex（buf?0?buf.Length）;
????????}

????????public?String?DecryptString（String?sCipherText）
????????{
????????????int?nLen?=?sCipherText.Length?>>?1?&?-8;
????????????if?（nLen?????????????{
????????????????return?null;
????????????}
????????????byte[]?cbciv?=?new?byte[8];
????????????int?nNumOfBytes?=?PublicFuntion.BinHexToBytes（sCipherText?cbciv?0?0?8）;
????????????if?（nNumOfBytes?????????????{
????????????????return?null;
????????????}
????????????m_bfish.SetCBCIV（cbciv）;
????????????if?（（nLen?-=?8）?==?0）
????????????{
????????????????return?““;
????????????}
????????????byte[]?buf?=?new?byte[nLen];
????????????nNumOfBytes?=?PublicFuntion.BinHexToBytes（sCipherText?buf?16?0?nLen）;
????????????if?（nNumOfBytes?????????????{
????????????????return?null;
????????????}
????????????m_bfish.Decrypt（buf）;
????????????int?nPadByte?=?buf[buf.Length?-?1]?&?0xff;
????????????if?（nPadByte?>?8?||?nPadByte?????????????{
????????????????nPadByte?=?0;
????????????}
????????????nNumOfBytes?-=?nPadByte;
????????????if?（nNumOfBytes?????????????{
????????????????return?““;
????????????}
????????????else
????????????{
????????????????return?PublicFuntion.ByteArrayToUNCString（buf?0?nNumOfBytes）;
????????????}
????????}
????}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件??????28672??2009-10-14?16:29??BlowfishClass\BlowfishClass\bin\Debug\BlowfishClass.dll

?????文件??????38400??2009-10-14?16:29??BlowfishClass\BlowfishClass\bin\Debug\BlowfishClass.pdb

?????文件???????2969??2009-10-14?16:29??BlowfishClass\BlowfishClass\Blowfish.cs

?????文件???????1669??2009-10-14?16:23??BlowfishClass\BlowfishClass\BlowfishCBC.cs

?????文件???????2093??2009-10-14?16:24??BlowfishClass\BlowfishClass\BlowfishClass.csproj

?????文件??????26712??2009-10-14?16:22??BlowfishClass\BlowfishClass\BlowfishECB.cs

?????文件????????158??2009-10-14?16:30??BlowfishClass\BlowfishClass\obj\BlowfishClass.csproj.FileList.txt

?????文件??????28672??2009-10-14?16:29??BlowfishClass\BlowfishClass\obj\Debug\BlowfishClass.dll

?????文件??????38400??2009-10-14?16:29??BlowfishClass\BlowfishClass\obj\Debug\BlowfishClass.pdb

?????文件???????1345??2009-10-14?16:18??BlowfishClass\BlowfishClass\Properties\AssemblyInfo.cs

?????文件???????4994??2009-10-14?16:20??BlowfishClass\BlowfishClass\PublicFuntion.cs

?????文件???????1433??2009-10-14?16:27??BlowfishClass\BlowfishClass.sln

????..A..H.?????16384??2009-10-14?16:31??BlowfishClass\BlowfishClass.suo

?????文件??????28672??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\bin\Debug\BlowfishClass.dll

?????文件??????38400??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\bin\Debug\BlowfishClass.pdb

?????文件??????16384??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\bin\Debug\BlowfishClassTest.exe

?????文件??????11776??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\bin\Debug\BlowfishClassTest.pdb

?????文件???????5632??2005-12-08?14:51??BlowfishClass\BlowfishClassTest\bin\Debug\BlowfishClassTest.vshost.exe

?????文件???????2195??2009-10-14?16:27??BlowfishClass\BlowfishClassTest\BlowfishClassTest.csproj

?????文件????????232??2009-10-14?16:30??BlowfishClass\BlowfishClassTest\obj\BlowfishClassTest.csproj.FileList.txt

?????文件??????16384??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\obj\Debug\BlowfishClassTest.exe

?????文件??????11776??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\obj\Debug\BlowfishClassTest.pdb

?????文件???????2564??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\obj\Debug\ResolveAssemblyReference.cache

?????文件????????935??2009-10-14?16:29??BlowfishClass\BlowfishClassTest\Program.cs

?????文件???????1205??2009-10-14?16:26??BlowfishClass\BlowfishClassTest\Properties\AssemblyInfo.cs

?????目錄??????????0??2009-10-14?16:31??BlowfishClass\BlowfishClass\obj\Debug\Refactor

?????目錄??????????0??2009-10-14?16:31??BlowfishClass\BlowfishClass\obj\Debug\TempPE

?????目錄??????????0??2009-10-14?16:31??BlowfishClass\BlowfishClassTest\obj\Debug\Refactor

?????目錄??????????0??2009-10-14?16:31??BlowfishClass\BlowfishClassTest\obj\Debug\TempPE

?????目錄??????????0??2009-10-14?16:31??BlowfishClass\BlowfishClass\bin\Debug

............此處省略15個(gè)文件信息