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-mantis-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 15:55:45 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 21ce854051bb845b128c8546ef1233e82f576f38 * md5sum 5483e8d3e404a31151f2db8724c1225b 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) iQEcBAABAgAGBQJQM693AAoJEIXCXpWhbrlN0sMIAOlNS3aA13tsezF3+jrnJYtl XvRAcB3vbAN6D+rP5yTbsk5zJror8O01326fuu20gwOxRG/EgC7bMqXSuGBE01y7 KY81iMys4fmkuD2vMbKdw/golPVvTPSQ7fCWOHUTuwP5pK6qeinUKH9ko8D9VOfV tgc7eQ9+xIWLHRaTcw43Jh7SzvkALUAoFZ9Rojr7SSPyEXDQP5NhndynmyaNJycL FuVcQZj+K8HodzYQeued0CyGcZeGB0tq2Mzvp98sP/fofe5yXsS3n+izKilZRG9S OZDV0s6eYFsR6kQ4OCUmeUz3GFfpf1bG7qRP68VrdUj8qIilgAWIbxGoMUeiBFY= =oGRj -----END PGP SIGNATURE-----