PrebuildGMSCore.apk
from open_gapps-arm64-10.0-nano-20200430.zip
decompiled using jadx
Spatula-Header-Generation: https://github.com/Romern/gms_decompiled/blob/master/sources/p000/iek.java
Generate device_key
: https://github.com/Romern/gms_decompiled/blob/master/sources/p000/iem.java
Get device_key
: https://github.com/Romern/gms_decompiled/blob/master/sources/p000/ien.java