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-roundup-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 23:58:48 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 851a1f62461338f18a30221f3c765d91af5e5fec * md5sum 4d4e8c66e3287ce8d091612e2ffcddde 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) iQEcBAABAgAGBQJRrn8uAAoJEIXCXpWhbrlNhGsH/2RWfqOZS1BMzp7Q4DVfmb9a 99CfmPF6u/7ZB0KAbrpbNFdfTaHCjuas4QsbvpVYZYemqqPd6G6+s67rBzVitZxM GLOYaKnXvlNUubfmSFZoAH9fz2V/kif2F85tg8oVYIO/oXtJCQ2+51M3qcE/Sngr V+LkM9Byq9W9FMG3ckvzfJjoMr4/Wvp/eb6aTkEyeWG1zMfmH8mgPuEzL/xMLfbv lvFmz8jfF9EvsJmbK/q3Q+OLujTJc9y0fZY27ToljDHUWGtGsfd+cib44AetsnJf z8XZfOjukDlKOFuN3gnznfkab/E621i7CutGhBei7Dj77nP37c4vShdHcdoZVx4= =iKDZ -----END PGP SIGNATURE-----