FDE, Full-Disk Encryption

https://source.android.com/security/encryption/full-disk.html

https://sudonull.com/post/23403-Removing-the-hardware-key-of-full-disk-protection-in-Android-phones-on-Qualcomm-processors

http://bits-please.blogspot.com/2016/06/extracting-qualcomms-keymaster-keys.html

FBE, File-Based Encryption

https://source.android.com/security/encryption/file-based.html
Android FBE

https://www.qualcomm.com/media/documents/files/file-based-encryption.pdf

NOTE — Per Google Android Compatibility Program’s requirements, devices launched with Android 10.0 or higher are required to use file-based encryption.

https://docs.samsungknox.com/admin/knox-platform-for-enterprise/kbas/kba-360039577713.htm

https://android.stackexchange.com/questions/239170/how-to-get-a-list-of-all-apps-that-start-in-direct-boot-mode-device-encrypted

https://blog.quarkslab.com/a-glimpse-of-ext4-filesystem-level-encryption.html