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-tkldev-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:39:21 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 73b7ec0b15df4fa5ebc4f9e88f4beda491ab3c6c * md5sum 1863bd0fdbf8b749d77afdfb5f1ce878 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) iQEcBAABAgAGBQJSc3bDAAoJEIXCXpWhbrlNObIIAJ+3WOFvLl8qB5vRazOi8f/l uxTO1QylUa5QHMdg919yyBEscEUFLe88mr0PCkWlprvBpYNbtihPLGXrkjzd5w25 gdACOJJFzWqNIJGqfhEmmj0XdJweE+XgsNBhxSI+OY4Wo/T1gio9+eqwl7L/NFt+ g/SmGYStygCfgz/Iea2AfalUJbdRr9h5rHDZ7sk08sTJSo2Sg+I9Arn1JMwyr3e2 D6LAjR/heIZYT1Kh4fb3ZxE7hQdUiNjl1TMQsCNFxD/XwDu6gg1MdsvyHnMg3fkZ uztWr1msn7iSRiZsMfsVVMU44zv7oEo/GyhiY8eL7u8stnCdrEv19wUkw5z58lc= =GouH -----END PGP SIGNATURE-----