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-owncloud_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 09:39:07 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9eeb0a4bd751dc7d4c28e9666fc9a39ebe8abd79 * md5sum b45ebdced99756e98375f00fc1d05f39 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) iQEcBAABAgAGBQJSXl6zAAoJEIXCXpWhbrlNYfEH/jpI9sS4fPdkq2CYN5SvxYvH u5fhEkcKyivlNbBYfyI0ZUVYJuBVDSa760CqBJg1zTuMPsNf66s19Aj35R8ExD+j HenkIPJxMycA2STrHSznqREBI1e1Hq0kkPavl+9MqBU1XguJptFZOcaymgHbfGGl mlKBLV6t6TYvSvsY7q7pafuG+vF1x/2hjqI73k09ue4B/fbwVTKAlEx13DOlkuWF BzZVhAaF6oQXvWsgymx0OKFzhyAsHMfAmSgbu12RHoFz+En5pFnb3ImckY9KS2n9 xnpzKJDiyc4xNT5vDSidWNOmZswsyCEwg5mFkJP26h8FeyFD+K0x8gVoMyG40Ms= =9ROE -----END PGP SIGNATURE-----