C#3 DES暗号解読アルゴリズムインスタンスコード

     using System; 
    
 using System.Collections.Generic; 
    
 using System.Text; 
    
 using System.Security.Cryptography; 
    
 using System.IO; 
    
 
 
    
 namespace ConsoleApplication1
 {
     /// 

     ///     
     /// 

     public class EncryptHelper
     { /// www.jbxue.com       
 
    
         //        
         private SymmetricAlgorithm mCSP = new TripleDESCryptoServiceProvider();
 
    
         #region       
 
    
         /// 

         ///       
         /// 

         ///        
         ///   ，  32 
         ///   ，   12   
         ///        
         public string EncryptString(string Value, string sKey,string sIV)
         {
             try
             {
                 ICryptoTransform ct;
                 MemoryStream ms;
                 CryptoStream cs;
                 byte[] byt;
                 mCSP.Key = Convert.FromBase64String(sKey);
                 mCSP.IV = Convert.FromBase64String(sIV);
                 //         
                 mCSP.Mode = System.Security.Cryptography.CipherMode.ECB;
                 //              
                 mCSP.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
                 ct = mCSP.CreateEncryptor(mCSP.Key, mCSP.IV);//      
                 byt = Encoding.UTF8.GetBytes(Value);
                 ms = new MemoryStream();
                 cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
                 cs.Write(byt, 0, byt.Length);
                 cs.FlushFinalBlock();
                 cs.Close();
 
    
                 return Convert.ToBase64String(ms.ToArray());
             }
             catch (Exception ex)
             {
                 //MessageBox.Show(ex.Message, "    ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                 return ("Error in Encrypting " + ex.Message);
             }
         }
 
    
         /// 

         ///      
         /// 

         ///        
         ///   ，  32 
         ///   ，   12   
         ///        
         public string DecryptString(string Value, string sKey, string sIV)
         {
             try
             {
                 ICryptoTransform ct;//      
                 MemoryStream ms;//   
                 CryptoStream cs;//              
                 byte[] byt;
                 // 3DES      byte
                 mCSP.Key = Convert.FromBase64String(sKey);
                 // 3DES      byte
                 mCSP.IV = Convert.FromBase64String(sIV);
                 mCSP.Mode = System.Security.Cryptography.CipherMode.ECB;
                 mCSP.Padding = System.Security.Cryptography.PaddingMode.PKCS7;
                 ct = mCSP.CreateDecryptor(mCSP.Key, mCSP.IV);//        
                 byt = Convert.FromBase64String(Value);
                 ms = new MemoryStream();
                 cs = new CryptoStream(ms, ct, CryptoStreamMode.Write);
                 cs.Write(byt, 0, byt.Length);
                 cs.FlushFinalBlock();
                 cs.Close();
 
    
                 return Encoding.UTF8.GetString(ms.ToArray());
             }
             catch (Exception ex)
             {
                 //MessageBox.Show(ex.Message, "    ", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                 return ("Error in Decrypting " + ex.Message);
             }
         }
 
    
         #endregion
     }
 }
 
   

     using System; 
    
 using System.Collections.Generic; 
    
 using System.Linq; 
    
 using System.Text; 
    
 using System.Threading.Tasks; 
    
 
 
    
 namespace ConsoleApplication1
 {
     class Program
     { /// www.jbxue.com
         static void Main(string[] args)
         {
             EncryptHelper helper = new EncryptHelper();
 
    
             //  
             string oldValue = "13800138000";
             //     
             //  ,  32 
             string sKey = "qJzGEh6hESZDVJeCnFPGuxzaiB7NLQM5";
             //  ，   12   
             string sIV = "andyliu1234=";
             //print
             string newValue =  helper.EncryptString(oldValue,sKey,sIV);
             Console.WriteLine("   :"+ newValue);
             //  
             string desValue = helper.DecryptString(newValue,sKey,sIV);
             //
             Console.WriteLine("   :"+ desValue);
             Console.ReadLine();
 
    
         }
     }
 }