using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Security.Cryptography;
using?System.IO;

namespace?FMSLicenseMachine
{
????
????///
?
??public?class?DES?
??{?
??
????///
?
????///?
????///??
????///???
????public?static?string?Encode（string?str?string?key）
????????{
????????????try
????????????{
????????????????DESCryptoServiceProvider?provider?=?new?DESCryptoServiceProvider（）;
????????????????provider.Key?=?Encoding.ASCII.GetBytes（key.Substring（0?8））;
????????????????provider.IV?=?Encoding.ASCII.GetBytes（key.Substring（0?8））;
????????????????byte[]?bytes?=?Encoding.GetEncoding（“utf-8“）.GetBytes（str）;
????????????????MemoryStream?stream?=?new?MemoryStream（）;
????????????????CryptoStream?stream2?=?new?CryptoStream（stream?provider.CreateEncryptor（）?CryptoStreamMode.Write）;
????????????????stream2.Write（bytes?0?bytes.Length）;
????????????????stream2.FlushFinalBlock（）;
????????????????StringBuilder?builder?=?new?StringBuilder（）;
????????????????foreach?（byte?num?in?stream.ToArray（））
????????????????{
????????????????????builder.AppendFormat（“{0:X2}“?num）;
????????????????}
????????????????stream.Close（）;
????????????????return?builder.ToString（）;
????????????}
????????????catch?（Exception）?{?return?“xxxx“;?}
????????}
????///
?
????///?
????///??
????///???
????public?static?string?Decode（string?str?string?key）?
????{?
??????try
??????{?
????????DESCryptoServiceProvider?provider?=?new?DESCryptoServiceProvider（）;?
????????provider.Key?=?Encoding.ASCII.GetBytes（key.Substring（0?8））;?
????????provider.IV?=?Encoding.ASCII.GetBytes（key.Substring（0?8））;?
????????byte[]?buffer?=?new?byte[str.Length?/?2];?
????????for?（int?i?=?0;?i?????????{?
??????????int?num2?=?Convert.ToInt32（str.Substring（i?*?2?2）?0x10）;?
??????????buffer[i]?=?（byte）num2;?
????????}?
????????MemoryStream?stream?=?new?MemoryStream（）;?
????????CryptoStream?stream2?=?new?CryptoStream（stream?provider.CreateDecryptor（）?CryptoStreamMode.Write）;?
????????stream2.Write（buffer?0?buffer.Length）;?
????????stream2.FlushFinalBlock（）;?
????????stream.Close（）;?
????????return?Encoding.GetEncoding（“UTF-8“）.GetString（stream.ToArray（））;?
??????}?
??????catch?（Exception）?{?return?““;?}?
????}

????public?static?void?main（string[]?asd）
????{

????}
??}??
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

????I.A....???????941??2018-03-01?13:25??FMSLicenseMachine.sln

????I.A....?????18944??2018-03-01?13:25??FMSLicenseMachine.suo

????I.A....?????15872??2018-03-01?13:25??FMSLicenseMachine\bin\Debug\FMSLicenseMachine.exe

????I.A....?????34304??2018-03-01?13:25??FMSLicenseMachine\bin\Debug\FMSLicenseMachine.pdb

????I.A....?????14328??2018-03-01?13:25??FMSLicenseMachine\bin\Debug\FMSLicenseMachine.vshost.exe

????I.A....?????83456??2018-03-01?13:25??FMSLicenseMachine\bin\Release\FMSLicenseMachine.exe

????I.A....?????32256??2018-03-01?13:25??FMSLicenseMachine\bin\Release\FMSLicenseMachine.pdb

????I.A....?????14328??2018-03-01?13:25??FMSLicenseMachine\bin\Release\FMSLicenseMachine.vshost.exe

????I.A....???????490??2018-03-01?13:25??FMSLicenseMachine\bin\Release\FMSLicenseMachine.vshost.exe.manifest

????I.A....??????2864??2018-03-01?13:25??FMSLicenseMachine\DES.cs

????I.A....?????67646??2018-03-01?13:25??FMSLicenseMachine\fms.ico

????I.A....??????3967??2018-03-01?13:25??FMSLicenseMachine\FMSLicenseMachine.csproj

????I.A....??????6301??2018-03-01?13:25??FMSLicenseMachine\Form1.cs

????I.A....??????9977??2018-03-01?13:25??FMSLicenseMachine\Form1.Designer.cs

????I.A....??????5814??2018-03-01?13:25??FMSLicenseMachine\Form1.resx

????I.A....???????746??2018-03-01?13:25??FMSLicenseMachine\obj\Debug\FMSLicenseMachine.csproj.FileListAbsolute.txt

????I.A....???????847??2018-03-01?13:25??FMSLicenseMachine\obj\Debug\FMSLicenseMachine.csproj.GenerateResource.Cache

????I.A....?????15872??2018-03-01?13:25??FMSLicenseMachine\obj\Debug\FMSLicenseMachine.exe

????I.A....???????180??2018-03-01?13:25??FMSLicenseMachine\obj\Debug\FMSLicenseMachine.Form1.resources

????I.A....?????34304??2018-03-01?13:25??FMSLicenseMachine\obj\Debug\FMSLicenseMachine.pdb

????I.A....???????180??2018-03-01?13:25??FMSLicenseMachine\obj\Debug\FMSLicenseMachine.Properties.Resources.resources

????I.A....???????762??2018-03-01?13:25??FMSLicenseMachine\obj\Release\FMSLicenseMachine.csproj.FileListAbsolute.txt

????I.A....???????847??2018-03-01?13:25??FMSLicenseMachine\obj\Release\FMSLicenseMachine.csproj.GenerateResource.Cache

????I.A....???????180??2018-03-01?13:25??FMSLicenseMachine\obj\Release\FMSLicenseMachine.Form1.resources

????I.A....?????32256??2018-03-01?13:25??FMSLicenseMachine\obj\Release\FMSLicenseMachine.pdb

????I.A....???????180??2018-03-01?13:25??FMSLicenseMachine\obj\Release\FMSLicenseMachine.Properties.Resources.resources

????I.A....?????83456??2018-03-01?13:25??FMSLicenseMachine\obj\Release\LicenseMachine.exe

????I.A....???????498??2018-03-01?13:25??FMSLicenseMachine\Program.cs

????I.A....??????1384??2018-03-01?13:25??FMSLicenseMachine\Properties\AssemblyInfo.cs

????I.A....??????2884??2018-03-01?13:25??FMSLicenseMachine\Properties\Resources.Designer.cs

............此處省略18個文件信息