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-dokuwiki-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 16:59:05 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 9244d68de1c6758e92d55d2290256a4b563a8f79 * md5sum b577116698b63ca795ac35cac736ec3f 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) iQEcBAABAgAGBQJQL8nRAAoJEIXCXpWhbrlNficIALXtdxpcYkBESJCabDflzA1Y S/bUq6rVIGECvK8yQn6rnZUa/vvEVE8Xl/cJVnjLuAQazUxCp03VZq/JWOvQPOoa /KuUcofIWbD026nKktOV7WaPsIaKYTffdKnaph+YtvQuK5ferQqsUEebMA9WBS7m sq9p1V4dxkqKXqVz09cmgZwIbmmS7wkmhkiMVgohv7e17QKWl88M0cLLn1ACi+qJ U/E4qFti2NxMxsYSL9aGH7XZ4z56rsuIH2EYiu4YSSw/Sh/0kF9h3zY1omdwFSiM Q3Oo5Z+rGVsp/fh4rIg9x1za1bza/VOGf2hggM3Gvsgxof+NIlH42RRcNOuIlh4= =rS/T -----END PGP SIGNATURE-----