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-revision-control-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 10:16:00 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 496a2d07bdd697a5e82fa766fe22782754655ab4 * md5sum a46279bc7d763cd1d827d4f328362fed 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) iQEcBAABAgAGBQJSXmdXAAoJEIXCXpWhbrlNsVcH+waxjs8z+bc7DKl67HCP746Q fir6W5cad7+f6Py6LFIvN8MNfawUeyR2kjyPRb62Ap30UxTtKOuHjrQTfROIuQXY lQ80ZMOFwyTn7qTQBh1vndosgyZFSpEgoFja9vcIl/mZagjh6PprM8nMJUb/UYsY 1FfmrIxmgCSxIx+NPfWDNY7gPVc9rQ5aOW+A2DAYJzv9SLMFgt9h6tKFwwx5FGZK LYyzQQ1Tx1S8JAgWGEVLToeTXH3tpDHFLTadnQDRv3YvJLE4g8gZPrhmfg1uwxXN WXaZR8vT10znhwxxnPihW2xyi6ce0PO1a8o37tScEgWY96AX7pSNbLh9pk7AL1Q= =pEm6 -----END PGP SIGNATURE-----