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-clipbucket-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 13:05:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3f9d6c1e1739c8d089ff87e1b002003ba9a188d6 * md5sum da74a05214f382d51df0c3d28f1ab9c2 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) iQEcBAABAgAGBQJRreYfAAoJEIXCXpWhbrlNBG4H/1FlqYHuo0N1pdEpsoP4TRSm 5qKOF3c0GOyxXRiDpUbd61/NgzqrndM3zvkgXMyiOISiDEi7563ry4Uqo75pdFg+ dr/1RJ00WyzZ83+o2akUDdFY9S6r64E15PU7CA1gyLRF9Ux8w+hTcaQ03Amsb/fa NizFzimSZctrDQyvR13KtlX0BQc84sluOYES3e2wxiOpK8QY3HBkY06TYz3Nb6wq LIbbGHRhDx5clS1yAZLxb9tmdV3PLCjLHDFhMdYS08ye84GJdJDewICc0yTlbaKT /quQN1elsCsUA4s29Fl9pRbL+kEws11eVpBnX4qgEhcYRj93fuUUu+JyGgJJfBw= =gfnF -----END PGP SIGNATURE-----