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-domain-controller_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 15:40:55 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2d96dddb30d16ab205e41f006282e0b9c49ce815 * md5sum f0bc20321478efbce1791b83a21d6ca1 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) iQEcBAABAgAGBQJSXWIAAAoJEIXCXpWhbrlNMX0H/1l71LX/cBG569sAUy1pstin mo6x8ScuoOL0CGFrPstSwqM3f73bzalPKY2jafu7VudQgrfL0XV9qv/m6fe72i0W o5/dMSGvrn4aDGFYW9YBF4z8fOMBaHv7Jo523EWN0NXhWNnE3pCMF5IkaU+ISXLY XmlUPNVusB4JOGx+6M7J4HwW9E8F2u8oOaK7q/ZqRBmiQH6RdVuhQDH52SQL3Fqy SIK29OgsoDZMu7EA3ImAmHk8KJI3v3dRkN84FU8yvmnL0pUtLeuSAzCKGgt2hVZS pqTyoJeqZxtvB8mQxQxEXMu7PZzKLh+BEB0HV/eeMxhQWk5B8/KW4DtyTNLKdFM= =3MBQ -----END PGP SIGNATURE-----