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-openphoto-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 16:26:15 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum f50716770514340d9b2f7166ffedbf4052f8f893 * md5sum 40134a79ac0e3a0f62af92df30a3901c 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) iQEcBAABAgAGBQJQM7adAAoJEIXCXpWhbrlNxoIH/3hCo7N6KhV4lLpbqmJlxXkJ w8qArFQpj3X0BqzLkz+ukNmVO8HsIEtSjtftJWSiZ7zLG4tvy+o5r5hyQxEdVyng jR81sA+27FXIiB3OzEqWjZz/k6pX0wWT9ozquQRhqTPAGJoHENJ9fvvdnK5xT8P3 bsxsmWaiSV3Wkm2HTslmhOg7kiagqQm7s7DCCMcqOZfSxTwRsQPk1TjrbfZPmg8U Ot3u2xw1uuT6uvKp/rFplSCsm/mLmvkzAfYIUPm3OAeQPzwySwAOmfYS1Nunb349 8r5jJW9OrR+u2EY1+ooWZMCe3chaGijowcVhvHwqQWUDYgqC5i4+gIQXHoSne4w= =/yci -----END PGP SIGNATURE-----