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-collabtive-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 08:51:37 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 96d259ea75799b994a315956211e74a84267348d * md5sum 0cc9f90ce145df28d1a7ccd5943b39b9 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) iQEcBAABAgAGBQJSc2uRAAoJEIXCXpWhbrlNzXIIAN0p6Tyuxm0a7E80PliP3+BS OtqzRXiMUOYyp9sqTxjaNCLkDIaYdsc66x2PTkj7of8jmazYNgXRYytqd2szaMWg XTrxrtiphfRF4qNjDqy/d4jTQP2aZn+FevGNMceKvCSpFpvv8KqYhhgbsIw7Fban myDZ2Sp6tT3/epmgCl1mlU5vERijlv7o2T9jnVEreUYstiq2l1HMJfZsDs8SWaQD I3N873nKh11YR0yN/xtfIxKpr8Uhnq0RaX01VoGNtBgnK4zoe5IADWdGhTOGjzlv eOuIHhWxNu0f9fKhXdS+IUE0EoHhdvP3smMjdQKi3tppy8wBr7rTZOyW3BaXEmc= =nRoi -----END PGP SIGNATURE-----