public bool VerifyParams(NameValueCollection stringparam) { if (!String.IsNullOrEmpty(stringparam["ALIAS"])) { //HasUserAlias(stringparam["ALIAS"], stringparam["CN"]); if (!AliasManager.CheckifAliasExist(stringparam["ALIAS"])) { AliasManager.Add(AliasManager.Create( stringparam["ALIAS"], stringparam["CN"], stringparam["ED"], stringparam["CARDNO"] )); } } StringBuilder sbuilder = new StringBuilder(); string passphrase = "Thisisa16sha-out"; string shaout = ""; foreach (string key in stringparam.AllKeys.OrderBy(k => k)) { if (key != "SHASIGN") { sbuilder.Append(key.ToUpper() + "=" + stringparam[key] + passphrase); } else { shaout = stringparam[key]; } } if (shaout.Equals(Crypto.GetSHA256(sbuilder.ToString()))) { return(true); } else { return(false); } }