Apple Sign-In: How to use it for custom server endpoint authentication?
问题 My use case is that once I have a user signed into my app, I use the Oauth token, resulting from the sign-in, when I make endpoint calls from my app to my custom server-- to authenticate the caller. E.g., I use Google Sign In in this way. This method (e.g., with Google Sign In) has several useful properties: 1) Updated tokens are created automatically on the client app. 2) My custom server can easily verify the validity of the token, using Google's endpoints. 3) Initial token verification can