According to android documentation the FBE system has two different levels. Credential Encrypted (CE) storage and Device Encrypted (DE) storage.

  • Does a factory reset of an FBE phone reset the keys of both storages?
  • If I run a full disk encryption on a phone that had FBE enabled by default and then proceed to factory reset- will BOTH CE and DE keys be different from what they originally were before FDE?
  • What would hypothetically be recoverable of the previous system assuming full physical access? Data remanence and all. (I assume bootloader is completely unencrypted. Is there anything I'm not aware of like an unencrypted swap or something?)
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