how to install GPG keys for up2date?

[rgleeson]

I know this is going to seem like a dumb question to many, but how can I
install GPG Keys for up2date, so I won't get GPG key prompts for each package,
every time I update a batch?

I'm a newbie to this GPG key thing - I haven't encountered when updating with
other distros.  Googling hasn't turned up any consistent info re: Fedora yet.

Thanks,
Rory