/// AES加密

        /// </summary>

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

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

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

        /// <returns></returns>

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

        {

            //分组加密算法

            SymmetricAlgorithm des = Rijndael.Create();

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

            //设置密钥及密钥向量

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

            des.IV = iv;

            using (MemoryStream ms = new MemoryStream())

            {

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

                {

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

                    cs.FlushFinalBlock();

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

                    cs.Close();

                    ms.Close();

                    return cipherBytes;

                }

            }

        }

        /// <summary>

        /// AES解密

        /// </summary>

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

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

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

        /// <returns></returns>

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

        {

            SymmetricAlgorithm des = Rijndael.Create();

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

            des.IV = iv;

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

            using (MemoryStream ms = new MemoryStream(inputdata))

            {

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

                {

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

                    cs.Close();

                    ms.Close();

                }

            }

            return decryptBytes;

        }