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-gallery-13.0rc3-wheezy-amd64.iso.sig gpg: Signature made Fri Sep 13 08:05:29 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 784771d98da828e37af2e08a136f9aa3c65f2cb9 * md5sum b1bc1cc075e72dafa676afdc24bae421 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) iQEcBAABAgAGBQJSMsdBAAoJEIXCXpWhbrlN/OIIAJ5jbIZysMRufIaljqQsCMp+ IXyVkCRAVX3QypIzU1CAHZeGI7td5/3fTOOqu59tzcTLY125ly0AQbrKGROLvQku uuapQbJKnmGLyv3Asu4ILn5XlPmP3jv3pplfES/PsPGiKmljncScK0k8bffm5q5n 9bywfgH6p/gwzloEdfw6zNUzTD2WFrv+J3LwIDIHRODhWAyap3DsZBpMzSxPbN/L jgk/y3MAj+wUPPiB/LXy5rY9rv02nKze6mzmvnulOFrNX7azNnB4oKvPlE4qWt5a CPxXinjhtMQoGLv7blEWNqkki2SEsQGhobcnV8cjr9LUHapdgvMtjRwJ7gfTjuk= =cB2d -----END PGP SIGNATURE-----