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-mediawiki-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 09:22:43 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9350b0c0251221e4eee0e5e0894af486dbdbb9bc * md5sum 65de84fa727fcd979f1c5eb0fe5a869b 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) iQEcBAABAgAGBQJSXlrZAAoJEIXCXpWhbrlNZyAIAJ6w9qN4OqoUsyMSusia4IUs vCIpk7iiRz8Ot1NV+I1DZfuzwzEFkXkSk0QzlQQoJw5X7Snt6tcHuhXWgSurkKtY GcaHfYlWf+iin6l9xMKtw4gjHLfzDkVXMq5ZuuMX63GT9QiicJbCkyP4FOpBGGFZ xfzvnAIjGJmPBc0jRKSKuT17hEY21UDr4hHew8990G0Uq85ttiaRdpk3hFzptNc+ jBKpvkz76oVVrIFJI31WnzxRpa522qRl5nfO/P6H8P5Olcd/r7vwmXKuRGQ0tOGK r1H50iyA/Omt4teeKR174WY4WrhNhAITFecqSOJeLzpoyFrYKwp6FPFD/uv1EcQ= =U7oE -----END PGP SIGNATURE-----