AES加密解密

key要16位的字符串。

    public class AESHelper
    {  /// <summary>
       /// AES加密
       /// </summary>
       /// <param name="text">加密字符</param>       
       /// <param name="key">密钥</param>
       /// <returns></returns>
        public static string AESEncrypt(string text, string key)
        {
            byte[] keyArray = Encoding.UTF8.GetBytes(key);
            byte[] toEncryptArray = Encoding.UTF8.GetBytes(text);
            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.Mode = CipherMode.ECB;
            rDel.Padding = PaddingMode.PKCS7;
            ICryptoTransform cTransform = rDel.CreateEncryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }

        /// <summary>
        /// AES解密
        /// </summary>
        /// <param name="text"></param>        
        /// <param name="key">密钥</param>
        /// <returns></returns>
        public static string AESDecrypt(string text, string key)
        {
            byte[] keyArray = Encoding.UTF8.GetBytes(key);
            byte[] toEncryptArray = Convert.FromBase64String(text);
            RijndaelManaged rDel = new RijndaelManaged();
            rDel.Key = keyArray;
            rDel.Mode = CipherMode.ECB;
            rDel.Padding = PaddingMode.PKCS7;
            ICryptoTransform cTransform = rDel.CreateDecryptor();
            byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);
            return Encoding.UTF8.GetString(resultArray);
        }
    }