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-core-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 08:53:38 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e10c48a85e10463643b0578da9bf4136ee45ecb8 * md5sum 0dae6df11fe40157cdfd4d58d20ffe3c 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSc2wMAAoJEIXCXpWhbrlNh10IAJdiUrCgHGSv80CcaKyaozhq gWIDthoimICMzN8LqxE8eL3tcGe91h/MMicM+P1MuIUMjvLKvpgs+hcCaogq+l9T TvgfgmCiCw62sixuc+qCeEZiHMlOH1YSl7TIBu7LOhWanXQJQB+aZuMz3002sjzn y7R0KV4LxcIj3+JhuPMna8tO/rV6ND5cr5LXHht5iJqmccC4Dr66+/GqoVVpP3ay /k0aAMflYvph1fCIdbuRMvjg2rsl8EFxcTzR8I5sju2GiCiiKsO9qJp9vUvbDv6j vBYN7/7kNV7fp6mlabpvP3Q/vhYphnacyEhqBudKktC+riH0yqf3do8kVdM3EcM= =y5eG -----END PGP SIGNATURE-----