public class AESHelper    {        /// 
        /// 获取密钥        /// 
        private static string IDKey        {            get            {                return "3vZ8rRLUME4b3K8xXovptGodOUXSCjrc";            }        }        private static string nameKey        {            get            {                return "1a54CRZ7WdwGYdNPonWkSMtHyRhlnv6q";             }        }        //默认密钥向量        private static byte[] _key1 = { 0x7f, 0x0a, 0x2d, 0x96, 0x94, 0xa5, 0xc2, 0x7b, 0xaa, 0x89, 0x00, 0x8b, 0xf3, 0xab, 0x15, 0xfd };      /// 
        /// AES加密算法        /// 
        /// 明文字符串        /// 
     
      将加密后的密文转换为Base64编码，以便显示
             public static string AESEncryptID(string plainText)        {            //分组加密算法            SymmetricAlgorithm aes = Rijndael.Create();            byte[] inputByteArray = Encoding.UTF8.GetBytes(plainText);//得到需要加密的字节数组            //设置密钥及密钥向量            aes.Key = Encoding.UTF8.GetBytes(IDKey);            aes.IV = _key1;            byte[] cipherBytes = null;            using (MemoryStream ms = new MemoryStream())            {                using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))                {                    cs.Write(inputByteArray, 0, inputByteArray.Length);                    cs.FlushFinalBlock();                    cipherBytes = ms.ToArray();//得到加密后的字节数组                    cs.Close();                    ms.Close();                }            }            return Convert.ToBase64String(cipherBytes);        }        public static string AESEncryptName(string plainText)        {            //分组加密算法            SymmetricAlgorithm aes = Rijndael.Create();            byte[] inputByteArray = Encoding.UTF8.GetBytes(plainText);//得到需要加密的字节数组            //设置密钥及密钥向量            aes.Key = Encoding.UTF8.GetBytes(nameKey);            aes.IV = _key1;            byte[] cipherBytes = null;            using (MemoryStream ms = new MemoryStream())            {                using (CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write))                {                    cs.Write(inputByteArray, 0, inputByteArray.Length);                    cs.FlushFinalBlock();                    cipherBytes = ms.ToArray();//得到加密后的字节数组                    cs.Close();                    ms.Close();                }            }            return Convert.ToBase64String(cipherBytes);        }        /// 
        /// AES解密        /// 
        /// 密文字符串        /// 
     
      返回解密后的明文字符串
             public static string AESDecryptId(string showText)        {            byte[] cipherText = Convert.FromBase64String(showText);            SymmetricAlgorithm aes = Rijndael.Create();            aes.Key = Encoding.UTF8.GetBytes(IDKey);            aes.IV = _key1;            byte[] decryptBytes = new byte[cipherText.Length];            using (MemoryStream ms = new MemoryStream(cipherText))            {                using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Read))                {                    cs.Read(decryptBytes, 0, decryptBytes.Length);                    cs.Close();                    ms.Close();                }            }            return Encoding.UTF8.GetString(decryptBytes).Replace("\0", "");   ///将字符串后尾的'\0'去掉        }        public static string AESDecryptName(string showText)        {            byte[] cipherText = Convert.FromBase64String(showText);            SymmetricAlgorithm aes = Rijndael.Create();            aes.Key = Encoding.UTF8.GetBytes(nameKey);            aes.IV = _key1;            byte[] decryptBytes = new byte[cipherText.Length];            using (MemoryStream ms = new MemoryStream(cipherText))            {                using (CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Read))                {                    cs.Read(decryptBytes, 0, decryptBytes.Length);                    cs.Close();                    ms.Close();                }            }            return Encoding.UTF8.GetString(decryptBytes).Replace("\0", "");   ///将字符串后尾的'\0'去掉        }        public static void genKey()        {            var generator = new RijndaelManaged();            var key = Convert.ToBase64String(generator.Key);            byte[] iv = generator.IV;            Console.WriteLine(key);            Console.WriteLine(generator.IV);        }    }

   Key:为32位的字符

　byte:0-255之间的16进制数字