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-appflower-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Tue Jun 4 19:46:33 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 50701a51140806464e9e7b739ebef516a80f7819 * md5sum 9fe3d8ad3fc1af0cb39aa97d13214801 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) iQEcBAABAgAGBQJRrkQIAAoJEIXCXpWhbrlNG8YH/jqJtYyg2uWGqJe97/cqrj/l gm5Ut9v7bMOtsx9zUWBLrXLUmmeGfh8VTuhYzMTF/NgXKwkNebXxAuwfnYpvrbc2 hIzvsn4W7V90nwCgwSd/KRJN9gSjyBcU4WKMshcAdIjDQiL/cVlJ5Cm7tkNSc3zk iX8S+zKjR643ruYNoxp+jCMO82BG2anlGyVVNVqkUsR9hQseXFvIBciVDRLcuATP ZyQH1EY6OhKm49YEPFrzZ78j6NV6VkaxcKTXukT52oJkA6eYfOjh6TfG8rWsB7hy EJVwvEoP0hXUGGiIoEE7lugUu2i/Pn5aRkbJDXpCckAceXvHFJcch3HTZSzA4cU= =3s1y -----END PGP SIGNATURE-----