private void NavigateToReader(ReaderFragment readerFragment)
{
var readerTransaction = Activity.SupportFragmentManager.BeginTransaction();
readerTransaction.SetCustomAnimations(Resource.Animation.abc_slide_in_top, Resource.Animation.abc_fade_out);
readerTransaction.Replace(Resource.Id.fragment_container, readerFragment, "Reader");
readerTransaction.Commit();
}
private async void LoginOK_Click(object sender, EventArgs e)
{
var passwordBytes = Sodium.GenericHash.Hash(userPassword.Text, deviceId, 32);
var keyPair = Sodium.PublicKeyBox.GenerateKeyPair(passwordBytes);
if (string.IsNullOrWhiteSpace(publicKey))
{
// No Public Key Present - Store
await encryptionService.SetPublicKey(Convert.ToBase64String(keyPair.PublicKey));
await encryptionService.SetPassword(userPassword.Text);
Toast.MakeText(Activity, "Encryption Keys Generated", ToastLength.Long).Show();
NavigateToWelcome();
}
else
{
// Public Key Present - Generate and Check
var generatedPublicKeyBase64 = Convert.ToBase64String(keyPair.PublicKey);
if (publicKey.Equals(generatedPublicKeyBase64))
{
await encryptionService.SetPassword(userPassword.Text);
Toast.MakeText(Activity, "Login Successful", ToastLength.Long).Show();
if (string.IsNullOrEmpty(incomingSMSContent))
{
NavigateToWelcome();
}
else
{
var readerFragment = new ReaderFragment(incomingSMSContent);
NavigateToReader(readerFragment);
}
}
else
{
// TODO: Display Failure Alert
var builder = new AlertDialog.Builder(Activity);
builder.SetTitle("Login Failure");
builder.SetMessage("Incorrect password/passphrase - please try again.");
builder.SetPositiveButton("OK", (s, e) =>
{
builder.Dispose();
});
var dialog = builder.Create();
dialog.Show();
}
}
}
