Instead of showing the reminder after x unlocks, I decided to show the reminder
2 weeks after the vault was last unlocked with the password. Let me know if you
agree with that.
We decided on calling the state file the "vault" a while back. This patch makes
the naming consistent across the codebase. I left "DatabaseImporter" classes
alone, because I'm not sure what a better name for those would be.
This patch replaces the usage of the deprecated FingerprintManager API with
BiometricPrompt. This uses the Android X library, so we get the native biometric
prompt on recent versions of Android and a Google-made one on older versions. By
not working with custom prompts for biometric authentication like we do now, we
can be sure that any issues like #70, #81, #237 are not actually our fault.
Here's what it looks like:
As a nice aside, this also adds support for the new facial recognition as an
authentication method on Pixel 4 phones.
This is still a draft, but early feedback is welcome.
Commit afb9e59711 fixed a bug where the password
encode function would add null bytes to the end of the output. Luckily (I
thought), PBKDF2 produces collisions for inputs with trailing null bytes and
thus scrypt does this as well, so we could safely change that function to remove
the null bytes without any impact. Unfortunately, that doesn't hold up if the
password is over 64 bytes in size. So after that change, the KDF started
producing different keys than before for such passwords and thus some users
could no longer unlock their vault.
This patch addresses the issue by using the old password encode function for
passwords over 64 bytes and repairing the affected password slot.
