1 /// 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 }
