I am trying to understand how FBE and metadata encryption works.
I read a lot of pages on FBE that it encrypts each file with different keys, and that those keys are encrypted and hashed with the Lock Screen Pin entered by the user.
My question is What if the user does not set the pin. How are the keys generated and how secure they are ?
How are the keys decrypted when there is no Pin set on a bootup of a device?
What is the role of Metadata Encryption from Android 11 to FBE Keys.