> Note that a key ID is just the last characters of the fingerprint. If you want a more secure key ID, just use a longer piece of the fingerprint (which is a valid longer form of key ID that gpg will Just Work with).
cool, I was hoping it would work something like that :)
Sure. Completely agree.
> (and I'm not entirely sure if those key-ID's are sufficiently unique and/or secure, but you can put more then just the ID in such a header to fix that)
Note that a key ID is just the last characters of the fingerprint. If you want a more secure key ID, just use a longer piece of the fingerprint (which is a valid longer form of key ID that gpg will Just Work with).