timcuth Braves Fan Premium join:2000-09-18 Pelham, AL
I believe they are actually sub-keys of master keys. Each developer has his/her own so that when someone submits a packsge, you know exactly who did it.
Well, I know next to nothing about how encryption works. I like how yum or zypper, asks (y/n) do you trust the key used by the repo. This works to stop someone from compromising one of the mirrors used to host the packages.