/// AES加密

2         /// </summary>

3         /// <param name="inputdata">输入的数据</param>

4         /// <param name="iv">向量128位</param>

5         /// <param name="strKey">加密密钥</param>

6         /// <returns></returns>

7         public static byte[] AESEncrypt(byte[] inputdata, byte[] iv, string strKey)

8         {

9             //分组加密算法  

10             SymmetricAlgorithm des = Rijndael.Create();

11             byte[] inputByteArray = inputdata;//得到需要加密的字节数组      

12             //设置密钥及密钥向量

13             des.Key = Encoding.UTF8.GetBytes(strKey.Substring(0, 32));

14             des.IV = iv;

15             using (MemoryStream ms = new MemoryStream())

16             {

17                 using (CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write))

18                 {

19                     cs.Write(inputByteArray, 0, inputByteArray.Length);

20                     cs.FlushFinalBlock();

21                     byte[] cipherBytes = ms.ToArray();//得到加密后的字节数组  

22                     cs.Close();

23                     ms.Close();                  

24                     return cipherBytes;

25                 }

26             }

27         }

28

29

30         /// <summary>

31         /// AES解密

32         /// </summary>

33         /// <param name="inputdata">输入的数据</param>

34         /// <param name="iv">向量128</param>

35         /// <param name="strKey">key</param>

36         /// <returns></returns>

37         public static byte[] AESDecrypt(byte[] inputdata, byte[] iv, string strKey)

38         {

39             SymmetricAlgorithm des = Rijndael.Create();

40             des.Key = Encoding.UTF8.GetBytes(strKey.Substring(0, 32));

41             des.IV = iv;

42             byte[] decryptBytes = new byte[inputdata.Length];

43             using (MemoryStream ms = new MemoryStream(inputdata))

44             {

45                 using (CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Read))

46                 {

47                     cs.Read(decryptBytes, 0, decryptBytes.Length);

48                     cs.Close();

49                     ms.Close();

50                 }

51             }

52             return decryptBytes;

53         }