View Full Version : [ubuntu] Cannot decrypt files after updating Ubuntu from 16.04LTS to 18.10

December 2nd, 2018, 01:48 PM
I've decided to finally move from 16.04LTS to the latest version and among many other issues I find that I cannot decrypt files that are created/encrypted before. The GPA (GNU Privacy Assistant) is rejecting decryption displaying the following error message:


If I tried command line, gpg is reporting the following error message at the end:

gpg: WARNING: message was not integrity protected
gpg: Hint: If this message was created before the year 2003 it is
likely that this message is legitimate. This is because back
then integrity protection was not widely used.
gpg: Use the option '--ignore-mdc-error' to decrypt anyway.
gpg: decryption forced to fail!

The suggested hint '--ignore-mdc-error' allows me to decrypt and if I try to encrypt back that file in 18.10 I can decrypt it without problem. Why is that? The original file wasn't created before 2003 but few weeks ago.