1·Next, we get the keycode.
下一步，我们得到的键码。
2·I would be more concerned about where you're storing the keycode in the app, and how users are provisioned with it.
我会更关心你存储的键码应用程序，以及如何用户配置。
3·I don't think doing additional things to the keycode (encryption, signing) would get you much, if the user doesn't enter anything to authenticate.
我不认为做更多的事情的键码(加密、签名)会让你多，如果用户不输入任何身份验证。