/// <summary>
        /// 使用平台公钥验签,数据列表里一定要包含rsaSign
        /// </summary>
        /// <returns></returns>
        public Boolean IsBDPaySign()
        {
            var akeys = new string[Parameters.Keys.Count];

            Parameters.Keys.CopyTo(akeys, 0);
            IDictionary <string, string> paramsMap = new Dictionary <string, string>();

            foreach (string k in akeys)
            {
                paramsMap.Add(k, (string)Parameters[k]);
            }

            if (string.IsNullOrWhiteSpace(PublicKey))
            {
                throw new Exception("请求方法【IsBDPaySign】 必须传参数【PublicKey】");
            }

            //var rsaSign = GetParameter("rsaSign");
            //LogHelper.WriteCustomNoAdd("paramsMap:" + AlipaySignature.GetSignContent(paramsMap), "IsBDPaySign_Info\\");
            var flag = AlipaySignature.RSACheckBD(paramsMap, PublicKey, "utf-8", "RSA", false);

            return(flag);
        }
        /// <summary>
        /// 用私钥获取RSA签名后的BASE64数据
        /// </summary>
        /// <returns></returns>
        public string GetRSASign()
        {
            var akeys = new string[Parameters.Keys.Count];

            Parameters.Keys.CopyTo(akeys, 0);
            IDictionary <string, string> paramsMap = new Dictionary <string, string>();

            foreach (string k in akeys)
            {
                string v = (string)Parameters[k];
                if (String.Compare("rsaSign", k, StringComparison.CurrentCultureIgnoreCase) != 0)  //这里要去掉rsaSign,防止误传
                {
                    paramsMap.Add(k, v);
                }
            }

            if (string.IsNullOrWhiteSpace(PrivateKey))
            {
                throw new Exception("请求方法【GetRSASign】 必须传参数【PrivateKey】");
            }

            return(AlipaySignature.RSASign(paramsMap, PrivateKey, "utf-8", false, "RSA")); //AlipaySignature.RSASign(paramsMap, PrivateKey, "utf-8", true, "RSA");
        }