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-simpleinvoices-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Tue Jun 4 23:57:45 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 19d381723aaf3782bf6190d54d0700491893f057 * md5sum 93b6ab5a5c6649c6086994006833c822 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) iQEcBAABAgAGBQJRrn7rAAoJEIXCXpWhbrlNMVsH/1DswOfQvBgdjyBJKkveJNqQ hOizSlwe+rnQ+tz/7UwbgBvxxZulDnqmi5LXx+B7FpZATbmmIi3U/pApFxLGUUJV rep8T1iTifujAa56HHaR4qyU2sC29oMgyTaLbPEQjNWlaamTRWVFuUg3rk+41AbJ FVpcOAIZiYMWTbhdOSD8ED5m0Pwx7WN3FyPoSOr+irKGN4YQe3xFTTKxpoiqELmb iliEMj/jjVRYdzRdvi/lQNoH72HAyMh/d1vPIS8SOMq8u701orYVm0y9N3BDbFtC 81xa98MMzJNI0nhcdgq33dAjRfr4epiMec3Igb7bQaLNVvqmPd3oytKywOz0UGk= =Pol7 -----END PGP SIGNATURE-----