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-roundup-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 15:48:28 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 70183bc79848a68dec533274e7cbaff445ceb64d * md5sum 838561576e45ba825c815789c50590f3 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) iQEcBAABAgAGBQJRrgxDAAoJEIXCXpWhbrlN9B0H/ikGaTIh36IFf+TwQQoeEQFl McY+F5lhEEoufEn/n4roEhOLd+IEU9dE/Phc0s3JJqS7pBTx0BEJOxLIWpFFwwnq 24AKB2GlaLJutCXXyWqkUx+dIkngki1hN6z5GApmY1/RBzna+UFkkyZjtkox6C3i VSXT/2jr+Ku6XFS1Q76y2jox17gs1TU7O1ESzloKoCQV+1CaCpwpc9PxyRs58hFu 66iw5WMjVlJX+MK/e0uVVkIyun2raxrPtgAf8Hnazx/vu5GJxqTIfqs8YeTrYf7N ciTQpEhmFquXF4aog+S+XeATEB1vYSMk4Eo9ynk3QDq64uYgVkNa41p4hp4g3CM= =geiX -----END PGP SIGNATURE-----