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-xoops-13.0rc2-wheezy-amd64.iso.sig gpg: Signature made Wed Aug 7 09:22:04 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e9355a1b972defa56272e3b502a0cd6984192a59 * md5sum 5dfc87a2b8cd2e2961c28c62b8f89b9b 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) iQEcBAABAgAGBQJSAhGzAAoJEIXCXpWhbrlNfpcIANPYzULHI99Ua2OD3It1TH9P Y6i8NAFihckly63pQCKK0QVB4vqz72OqFYO0uePTmz0cy2lvAxKbGwxn6JbjAn0f 0cocWNsMlAr5SNjedB/MaPHsqXjg+Coc+CknFcq5oXbCJOU10D0dULZFZVyVGoUR NLoib5TdVmtjWRFoQnyg98Hvmaplawk86GwXSobRktCtvk1jZ4nFJvqIeBD4VZgw Er80NwKiWBdYCU3gKBt2y0q2n3O2tNljub7D0yIQ10MdHQZ1IZcU5VIWdE88FERc wXAi3uEwpzUHS5RR6aj3Sr8fPI9GHOU6RVYnKjWL9RGLiho3ml8GDjqJLTM/Al0= =869s -----END PGP SIGNATURE-----