((PGP top|url=|keyid=)) <pre><nowiki> <key ID here> </nowiki></pre> ((PGP bottom))
This template takes two parameters, url (which is the URL of the keyserver your public key is stored on) and keyid, which is the Key ID. After that put in a <pre><nowiki> followed by your Key ID followed by </nowiki></pre> followed by ((PGP bottom)). Or, just see User:Cyde/public key for an example of actual usage. Using this template adds the user to Category:Wikipedians who use Pretty Good Privacy.