title: OAuth-Based Authentication Scheme
body: <p>I have an application that is run on multiple user systems, and using OAuth, allows the users to log in via Facebook, Twitter, etc. The entire point of the user logging in is to get settings and actions that the same user made while logged in on other computers, as identified by logging in with the same OAuth provider + provider user id. The application itself is written in C++ using Qt.</p>
  
  <p>My question is this: how can I save the settings that a user made, and allow them to retrieve it in a secure way? I have a centralized server that I can store information using MySql tables, but I'm not sure the best way to have the user application prompt the server, and receive the data stored for that user. </p>
  
  <p>Any ideas or places you could point me towards? </p>