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 debian-7-turnkey-fileserver_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 08:48:05 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7a52fd5f0022a6bd1024c4a8a88d6fc640919ccf * md5sum 9892eb1183e5f3042f978a2667a1dd36 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) iQEcBAABAgAGBQJSXlK/AAoJEIXCXpWhbrlNNvgH/2eEKaaUxr9JcSm6LpUxLv36 95yGBFkLzHjMuxMd7Di93ECOOa/WoFATEseX9verG7aQnqS+CINfK3an6MBU/674 SKIylWWKqJxo3qZwjEJtfVIvOcnkBT+lVzmsHXs+QQhA73XGahB9kBGAt2uP36NB NQ/EYnmVmUNtIfWPUxLr9ni3wQEUJ8uOVqz+R1qZgdc/Y7uLH2vYc1X2UU4jaZ1A EzTpeetPQwqmviakQmnXSxgEooUjY84d3a4E4OhHTBlWXJ1sFpPD0Is9Ao8Lr8uS lDVmDDnK7u8GPWiaSzv4fb+JyhxBlkQDDxrUBaNoQqC4zQ6LYc5WRuGzLRPE6kE= =lgNX -----END PGP SIGNATURE-----