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-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 23:01:35 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d532f4813a60d582c704fe8b3efea9cd7e06358f * md5sum c019669da29fcfcb59bb56f527102bf2 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) iQEcBAABAgAGBQJRrnHBAAoJEIXCXpWhbrlNXa4H/3+n/YWhWconLlmNvXccIopl 7AbCw2OZyfjDF65ZEwDUtQu+YWMrocRBbygCAksjQTKAS6b/w69El7g63fzU6BiB G7ifiOhGThSghX6pUQvYd2PGdCKaNWw4T0evJ6w45s+nNaBM/EfP3gJpfgVWw3Ih 4sZnV0u+ywyukX0pJvdrY8NFOmH1aa4zm9MHLn+78ZnISVvpwMv4KOdpY94q6FL8 2msyZB+s8wiVWEZGS0ca/bpsGitAO5tTl7/KDWyEHV9MwkxyCy9oOvZCKBNBcly5 IrrF/DwYy2bYT3OMl4scrg8izhrbtREsWw9hYDnqSk/hV6xt0N99r/1c7r3XAxE= =aHI9 -----END PGP SIGNATURE-----