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-oscommerce-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:39:30 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 8ce85466be2e920ba15f2338d55dbcaa2f56ab25 * md5sum 3e21884240f0183a269cab974a67875d 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) iQEcBAABAgAGBQJQL9NIAAoJEIXCXpWhbrlN3joH/2EkbDSe6x/dzZF72yaGQOZG j73Z2A4ssCvUr26U/p95TT5uIIytAwNymf93nNoIg6qv81bCVWmL7F211gGfPrxj lDEDEaBx4oHjUy7BNvUnBx4kiUjPmLbU90TCOntQNfv8FqbrCjRWCgQsiYszCe6d GSeAkfmB2BcMhRoC9YV95tJR3I89dmuJFQjYtGxFpLDpvSEeKau8KimUDeJ5/jHt O1pCuOTnSNOgg7x0Gb4ZVFs06lx1ERtoSez/DZgS7dXyTSeoIq8zsvwQ5pccZDTV 3laiKiGE9BQG5aD7noP7AymhYeo0CiSQpmjRrfe5fv5Unz9LnmbrSH/IPAJJjqs= =Moz8 -----END PGP SIGNATURE-----