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-drupal7-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 20:46:24 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum fd6569c271b9bfc2a7a69a33e8e86fab4b437299 * md5sum 576db5b9f0c2f04937dd531b7156d2e6 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) iQEcBAABAgAGBQJRrlIQAAoJEIXCXpWhbrlNvHYH/iI6G4J6uipZXHvW26eXBJVz Loeiy9TivNRDKRalYuK6HxrIqVEvlMn3+W49zf5WrvS8rYi2E9IJl60Yzh25wQmX ZNrkFUzLHABcLI+/4hl9WSaXhb8pJC1OWaIc+NpQCWad6sK2TK6Q+3Vh03eKm27Y IwV/Um1g4/Le6XgLUd4+02efHi59CNvIZxIwnOVR3XdMdIO9FCLocQZ0mcLcjk7O W9avEoGWF9nY5Y7OLNkNKEtZjK73/IiCYYg2r46PDQ1svbYyPjVYljRlmUymP/2h X7VinJfLtHWsuHUhKgz1rcXp9th/FFFwEqaYBFhlt1b/80G1gx0+juBRoOlPoTc= =Bgi/ -----END PGP SIGNATURE-----