/// <summary>
        /// 加密字符串 密钥为系统默认
        /// </summary>
        /// <param name="inputStr">输入字符串</param>
        /// <returns>输出加密后字符串</returns>
        static public string SEncryptString(string inputStr)
        {
            MySecurityHelper ws = new MySecurityHelper();

            return(ws.EncryptString(inputStr, ""));
        }
        /// <summary>
        /// 解密字符串
        /// </summary>
        /// <param name="inputStr">要解密的字符串</param>
        /// <param name="keyStr">密钥</param>
        /// <returns>解密后的结果</returns>
        static public string SDecryptString(string inputStr, string keyStr)
        {
            MySecurityHelper ws = new MySecurityHelper();

            return(ws.DecryptString(inputStr, keyStr));
        }