This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-trac-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:40:55 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 4b241af04bb24df5a049b510c2720903c3cd57df * md5sum 67cf19dcb49c1c1a85afcf512c5fe8a9 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJQM7oPAAoJEIXCXpWhbrlNRCwH/jDJrJuUi/mCpFF0Z0aDal0T CvZVzulAAlGb+Qjpw6CE1IdCIsxbM8yFY8xPZxMIQlYdfxAxWGuyW3xC14pAjaux AKfv+NTbjC8TuoZ/tt4lN8wbxMsgUl3908ZZ6tr5HxFgL3En8qOxrVTFC04q0bDh wrFYzIUuAtMA0kNNaiKG1BCPBI2MBpjjj+1d0bD6zOszFCkkb+GqIDL0Wy7zHjEA BAjAwKC48w2juLvMXKd1wklw/YBlOPw2MLLrQvKpz9XqvtNzOH8oxB6cryV4gfno cx6f0aYla3l3h0Mef5zE2TM5PTaX8wZubGZYE7I4QS0VIKoeHx6hl0ZIcV1y76w= =DbMu -----END PGP SIGNATURE-----