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-joomla15-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 08:48:24 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4ead68fd1e20511b415106dcf2743c5dbf1fc261 * md5sum 0f8e8ddd361c949ae4bb6ad97d53b8d3 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXlLOAAoJEIXCXpWhbrlNo9wIALhhFV5DSUi1B5djSC/BesG3 7ZtuMVHnXPShNS0zivHxGKYCIeYrCi9ugs7ky0HX4EVlESl1M0FmD8blVuGVMsFb APf7AOP191ZXrU/SlRjdIRtsSn41le290NwItfJzOdakKfVgaaiJSdQ78Ts4CJ74 vWN1+Q+wFefoEpCU9fpQWXi5XzGdXVpKpL0LNovqHuI3ag3fnVxml8YMhRMP37GM JXYFmmEiuU0GnlpUdy93CZ877aORYo9Pjl40csac8l+6ptF+bTN2WyFnHVaxpeF7 NlKncxkw4V+ewPifkF9spiRnF8tbz61ebaL4RppejstoRSyh2hpVFOEcERZ1noM= =Qp7D -----END PGP SIGNATURE-----