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-phplist-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 15:00:30 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0be90d22129632b2fac8d13b2319022c4dae1714 * md5sum f931c01a7fa3df5944c5720ff0c98c0f 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) iQEcBAABAgAGBQJRrgEHAAoJEIXCXpWhbrlNq0IH/1Schqs7l24cOnjMffVJTtuq Er4EERO6x5gA1Hkw8rJHFl/g3vqA4I6Hh9mXbtujAIjMydT57jrKiqPspBLvomvv iApJ2PRn+g4Wt+Web120GIbkRdpdMMeOf+TUjwutBWEC/+qAlaSCjtd5qERJK1Vc RXDKQ10ahXhEMM5S8VaIrvmn/WXoXJW23eq1ZxIj8kOCGZFfxHPUfYLy+kMDSh7E pj+ylYBqLgusi+hOpT5poVRMf2ZxLNadKwFLshc4Y0rOxcaK2jGS1vQF7kZS8YZ3 iAK13kwlI5DQ3IP+ywaq3RjaVxyh53+VfrVVUfEI24cP851Udj0yobm7kpVLWuA= =6+5t -----END PGP SIGNATURE-----