rpm gpg keys

I need to setup gpg keys for the rpm sites that I use to obtain or update software. I did not realize, until I read an article on rpm, that the current version of rpm stores gpg keys within the rpm database.

This brings up the point of gpg documentation. The books on pgp are ok, but there have been some minor new features added to gpg that are not in the standard pgp. There is a brief user's guide to gpg at the gnupg web site, but a lot of stuff is not covered.