6027-3543 [E] The integrity of the file encrypting key could not be verified after unwrapping; the operation was cancelled.
Explanation
When opening an existing encrypted file, the integrity
of the file encrypting key could not be verified. Either the cryptographic
extended attributes were damaged, or the master key(s) used to unwrap
the FEK have changed.
User response
Check for other symptoms of data corruption, and
verify that the configuration of the key server has not changed.