public async Task <FastPayRsp> ParseFastPayAsync(string content) { var decodedXml = JdHelper.Base64Decode(content); var chinaBank = JdHelper.ParseXml <ChinaBank>(decodedXml); var exceptedSign = JdHelper.Md5(jdConfig.Version, jdConfig.Merchant, jdConfig.Terminal, chinaBank.Data, jdConfig.Md5Key); if (exceptedSign != chinaBank.Sign) { throw new BizException("返回结果签名不正确"); } var desDecrypted = JdHelper.DesDecrypt(chinaBank.Data, jdConfig.DesKey); return(JdHelper.ParseXml <FastPayRsp>(desDecrypted)); }