Do not use real password when unlocking "fake" header on reecryption.
Do not use real password when unlocking "fake" header on reecryption.

If reencrypt removes encryption (or adds encryption to not yet encrypted system)
there is a temporary header using null (none) cipher.
We do not need to pass through password when unlocking these devices.

periodic1236/cryptsetup,periodic1236/cryptsetup,periodic1236/cryptsetup