14. Online Service 1. Authorization Request (Start URL) 2. Login page 3. Credentials 4. Authorization page 5. User decision 6. Authorization token (Redirect URL) 7. Data access User App

17. In the Page handling log-in: private void AuthenticateWithWAB() { Uri StartUri = new Uri(lDPUrl); Uri EndUri = new Uri(CallbackUrl); WebAuthenticationBroker.AuthenticateAndContinue(StartUri, EndUri, null, WebAuthenticationOptions.None); } In App.xaml.cs: protected async override void OnActivated(IActivatedEventArgs e) { var args = e as IContinuationActivatedEventArgs; if (args != null && args.Kind == ActivationKind.WebAuthenticationBrokerContinuation) { var wabPage = rootFrame.Content as IWebAuthenticationContinuable; wabPage.ContinueWebAuthentication(args as WebAuthenticationBrokerContinuationEventArgs); }

21. void SaveCredential(string username, string password) { PasswordVault vault = new PasswordVault(); PasswordCredential cred = new PasswordCredential(“MyAppResource”, username, password); vault.Add(cred); } IReadOnlyList RetrieveCredential(string resource) { PasswordVault vault = new PasswordVault(); return vault.FindAllByResource(resource); }