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-vanilla-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:45:22 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 27f427d6d0cd9075d4f7f621ae8b28782bf7bd51 * md5sum 0cebd0e4ce3663f38945f96ec98bf067 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) iQEcBAABAgAGBQJSc3gsAAoJEIXCXpWhbrlNfjMH/2RlNeZbJKzYFsElWSrCy3jb PEwUYQqWLMpO4LWIgOHNs3JfUkZFsU3KShxgm8OqfQWTl86DemCZvoskpj7ILxWO gvj1u3203tdQfoWkqqKX2YcQmmYmcq/DqVuadlpUEfN8jZiaYanyDbxJao3grtj3 DtkXMpZMPzgMy8iCg7rvqLeRl4+G75GFjvIrIqqmlYuHHagSqUufnFwz+0X/s19j Di4qF4dDJu+Utq2dHjR+Wf4O5JsAhkTxOmqY+K+3ilffqaV37in76QKEi3gCWw+s WJvTN/pvE4ZYn+M9Wj6s1e6BiiED623OIutphcNhlXw6kVTjyXA1IWthJ4V83uU= =1kTJ -----END PGP SIGNATURE-----