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-domain-controller-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 08:57:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 764e0e08fad211b2f0905040eaaf87289340169c * md5sum 6bd3659b3f9e4782e326885cd945f62f 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) iQEcBAABAgAGBQJSc20DAAoJEIXCXpWhbrlNjlUH/0YRJJOIOefB68YJP8yKcmWF PB26EgK2ei8QN4SGQOmB+qZtOkQHDU+zpa67KFwH4Z91P9r8JjgI7SyI8825AQ+h SLww5p4UFwFXPMizyaynza8lvmjp4k4fn8+lB9gXtU5J4oLx6+8nWugYjr700Mjd UoB3oGVTqMuAa5hWryz4b6fFN3rj9QhZODtyOe4HHj4hEKG5WclRUJFEHyLSIBIu NOht/n819yV9h+lbmBCz2JSC9f9/cvTdBN0dO+NO2p/QLt237yPc+wRdzYFSPHau Oui7azo3dXZCmWObHBl47sqg7oZvyn0ayHL+gZkd1KfK7cWz/jnjXCXtxkh5N8A= =zgW6 -----END PGP SIGNATURE-----