Android Keystore keys wiped after Android system update

[Danny Katz]

Hi all,

Hope this is the right place to port this.

I am responsible for an application that uses the Android Keystore to store encryption keys. A user reported that the application stopped functioning in a way that makes it clear that the keys were removed. this happened after an OS version upgrade on his Verizon Motorola Droid Turbo 2. The update code name is 25.11.10.knzie_version.verizon.en.US (update to Android 7.0).

Has anyone encountered this kind of behavior? Any remedies for this?

Thanks in advance,

Dan Katz