AES加密解密

AES高级加密标准　密码学中的高级加密标准，是美国联邦政府采用的一种区块加密标准。

 

主要代码：

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1. using  System;  
2. using  System.Text;  
3. using  System.Security.Cryptography;  
4. using  System.IO;  
5.   
6. namespace  YongFa365.Security  
7. {  
8.     /// <summary></summary>   
9.     /// AES加密解密   
10.     ///    
11.     public   class  AES  
12.     {  
13.         public   static   string  Encrypt( string  strEncrypt,  string  strKey)  
14.         {  
15.             try   
16.             {  
17.                 byte [] keyArray = UTF8Encoding.UTF8.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strKey,  "md5" ));  
18.                 byte [] strEncryptArray = UTF8Encoding.UTF8.GetBytes(strEncrypt);  
19.                 byte [] resultArray =  null ;  
20.   
21.                 using  (RijndaelManaged rDel =  new  RijndaelManaged())  
22.                 {  
23.                     rDel.Key = keyArray;  
24.                     rDel.Mode = CipherMode.ECB;  
25.                     rDel.Padding = PaddingMode.PKCS7;  
26.   
27.                     ICryptoTransform cTransform = rDel.CreateEncryptor();  
28.   
29.                     resultArray = cTransform.TransformFinalBlock(strEncryptArray, 0, strEncryptArray.Length);  
30.   
31.                 }  
32.                 return  Convert.ToBase64String(resultArray, 0, resultArray.Length);  
33.             }  
34.             catch   
35.             {  
36.                 return   null ;  
37.             }  
38.         }  
39.   
40.         public   static   string  Decrypt( string  strDecrypt,  string  strKey)  
41.         {  
42.             try   
43.             {  
44.                 byte [] keyArray = UTF8Encoding.UTF8.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(strKey,  "md5" ));  
45.                 byte [] strDecryptArray = Convert.FromBase64String(strDecrypt);  
46.                 byte [] resultArray =  null ;  
47.   
48.                 using  (RijndaelManaged rDel =  new  RijndaelManaged())  
49.                 {  
50.                     rDel.Key = keyArray;  
51.                     rDel.Mode = CipherMode.ECB;  
52.                     rDel.Padding = PaddingMode.PKCS7;  
53.   
54.                     ICryptoTransform cTransform = rDel.CreateDecryptor();  
55.                     resultArray = cTransform.TransformFinalBlock(strDecryptArray, 0, strDecryptArray.Length);  
56.   
57.                 }  
58.   
59.                 return  UTF8Encoding.UTF8.GetString(resultArray);  
60.             }  
61.             catch   
62.             {  
63.   
64.                 return   null ;  
65.             }  
66.         }  
67.   
68.   
69.     }  
70. }