gpg --verify livecd-amd64-installer-2007.0.iso.asc livecd-amd64-installer-2007.0.iso
gpg: Signature made Thu May  3 03:33:25 2007 IST using DSA key ID 17072058
gpg: Good signature from "Gentoo Linux Release Engineering (Gentoo Linux Release Signing Key) <releng@gentoo.org>"
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: D99E AC73 79A8 50BC E47D  A5F2 9E64 38C8 1707 2058