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jamie-mh / AuthenticatorPro

📱 Two-Factor Authentication (2FA) client for Android + Wear OS
https://authenticatorpro.jmh.me
GNU General Public License v3.0
2.98k stars 198 forks source link

Biometric unlock, Fairphone 3, Update Android 13 #895

Closed HDValentin closed 1 year ago

HDValentin commented 1 year ago

Describe the bug I've updated my Fairphone to Android 13. Since the update, I can't unlock the Authenticator Pro app, no longer with fingerprint. Unlock screen of the app and in the settings >> biometric is blanked out and can't be set. Some other apps work with biometric, and android is unlockable by fingerprint. Before updating to Android 13, everything worked well.

To Reproduce Steps to reproduce the behavior:

  1. Start the app
  2. biometric is greyed out and not clickable
  3. unlock only works via password.

Expected behavior normal behavior as before. Biometric works.

App Version 1.21.0 F-Droid

Additional context Fairphone 3+ Android 13

I've just seen that it is a Problem with the Security Class of the Fingerprint reader. https://forum.fairphone.com/t/fairphone-3-and-3-a13-fingerprint-sensor-update/97654/347#previous-faqs-published-on-28th-of-july-16

I have a little hope that you have an idea how to solve this for the authentication app, perhaps with a workaround.

jamie-mh commented 1 year ago

Hi @HDValentin ,

Since the biometrics on your device is now Class 2, it can no longer be used to retrieve keys from the Android Keystore. This is a necessary part of the biometric unlock feature in Authenticator Pro.

Cheers