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-lapp-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:50:07 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 2e028f2a3ff1ed99b61c635a31d92e3dc7a6a7a8 * md5sum 6ef90fa064f905131980bdcb4964abda 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) iQEcBAABAgAGBQJQM3XlAAoJEIXCXpWhbrlNJLwH/R8EXt3I863Zk47olKbyNwxN qSMWFMI2Usk75s+6WZ8e4zbu4sbCyO0fkRC++SFS7xinosBMHiKsKSrD5zMoRTb9 xQHvxnGyNPpa5XUssLYUNvxUJXzDa2xOSlYFTy/mHcqtLDBuEHwlbYPzKsQYnhyl nFqD52DOY4mNtX+UePkPIm9wxUfm6zzikoAlU67gvq9v5AsnDiQdlUIGp5aSPGha cocIb9WX3T/g1e0jFHago3KOoRHVvwdQbQJo13Vb5FHWxu1Ih0cDIKV7aJz3qbQn VcZj4Z2eAa9t/ZB1tI+lp1zvNti5G8zn4qkMFXcl4Zktetrox0TcqLjAG6TvEuU= =oQzd -----END PGP SIGNATURE-----