At the moment, I'm trying to check the fingerprint of the oracle_vbox.asc key that I downloaded from http://www.virtualbox.org/wiki/Linux_Downloads: they provide the key and the fingerprint but no instructions for reviewing this information myself.
How do I show the fingerprint of the key I just downloaded?
apt-key finger oracle_vbox.asc shows the fingerprints of all trusted keys, which isn't what I want.