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-lamp-13.0-wheezy-amd64.iso.sig gpg: Signature made Tue Oct 15 15:22:31 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5a8da10b06b29d7cdd485ffb756a3a4f8cfd1102 * md5sum 09888afe076e85f08383a85fad4e4c8d 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) iQEcBAABAgAGBQJSXV2vAAoJEIXCXpWhbrlNLegH/2k8rQi/sUykB1Lm/4MqlzOs byRZyAeTRFZz+DkhraDY9wD8t1F3eeEPQ5N1RmEYe495yXLggitYNMhlLaXt967c v5jPz2m5+uR4dWmFurG6XbC3zDh8vWoSEWgKxR3eetvvVVP0sn6l7L2rsltarXQ5 gx+6ZsBYyTk4+q7eFkBwsYmUOATneu8V4B9SeMSiLuMhPWSzObmNcVeRX0QcrdUK OMM2XicB24IOy63553e5ObvEy1Fo1ZoVGfAnuzF8UDInrQHzLiIIHEDzPWEQknXk RRFyEMxO+Ns0k8bZZ9B5p33F9gMVyig0Tvy14nc6JTROQQhxDUxJDpHVP/fsktE= =Y3uz -----END PGP SIGNATURE-----