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-silverstripe_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 18:45:18 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 964bca1737ac528b4cb97331e65c893063f6ebee * md5sum 965a22bdaa61c232b23c9a0333ede89e 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) iQEcBAABAgAGBQJSXY01AAoJEIXCXpWhbrlNeCkH/RHftzV1e8nvYLmIjRK3f7vj 78KCJmPiO0VIeHSJ8A3bHfjixUiKEU6rLQi2Q4hf8gVSbeqxZNfO/6OsAWavVekM y97tI1tkuwJ+CmLV4pq+0QaUcaraKIKaQ+u3ZrxZF6gBq+QCTy2Fyv6PDdRfe1an uAfZURD5tN62sGJJF3VxtXB5bg1Hmh2LGCHGoIOMP9gqZ8e8FZtyxPNa+A8cIz0Q E+qA0HUTpbz2/eEcLF0C4D+Ljc+dWpd8G3YP6+c6dONEeyx2Iq2q6a8eZkuGO9ab rF+sWK0KsHrwcPqj3ZLYxLYD08gQB6P8C3lUB/LKmhinf+/l2sqPRxCVS13UUVk= =wyc4 -----END PGP SIGNATURE-----