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-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Wed Jun 5 01:15:08 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4c7a0ab9125b3d4f138e21528caad9c0464aa8ca * md5sum 098eccaad5104474b229b6b546ff7a6e 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrpERAAoJEIXCXpWhbrlN9vQH/iAinPYcZvjEsx2R/l2qZljQ JG21c5hONNt9j12PrL7ztUB45YG6SffEqC6GvxhxyadtMpJDVmcdFiBstRswKvI1 7uWVuVGo9sM2JDufLwwdJuhzNn/KVd8N7Y0cf1Un+h9otVsatdwuyvik9Bxa8nie t73iio80juaER4T0r487/WnBZ3sI0XTVNfQayX5cLi2f8W1OUFJdb5OOaaG0xLMS oOOO67yjRYJAa/od+GuRWY9NHB85bnhLUaItnlzMhgNjnjvpxgTNDzUAceIiTWwi Ydtm0q3wrz5RgW8kS1wf7v1hFHQDCyuq7N5V+zfMJSg7aSKT23gWhUA/1IRakZo= =weWE -----END PGP SIGNATURE-----