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-limesurvey-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 11:50:58 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 7a1f26c1122add6a531d33e3dcfd2b4d46734347 * md5sum 559780ce1added733c709de41916b34f 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) iQEcBAABAgAGBQJQM3YWAAoJEIXCXpWhbrlNuR8IAIZyFB/ohAGIfCMvSF6+awB4 7WXffYUCGBMqsNHUWYII+XyUEbUwhtiXoEFq+s1flMrrF8hRDDf3wOmfwvaXiYh6 oPWHKXdt/GgFiqvBqMgIGzPheMjqKB0IekHlfMaNPgW23XCZeHU5NzZ1a8BDhFrq h+e8vEfqfrQo0mUuHFwFiEoNUYYCrBl0sKyZ9lgxPQEnMm23VNj/e9JSHQLM0f3+ YgjLzRymZsSFqSa65uZp0vZV/E3rDFLHFP0XPkyIE/VP07RLKAnqarDi/mmjtoC+ EreUe2b9HtyVIWzhYKMIkbravR4XGMQNBPztTbNjUu39XjxY/hzZNzjWKzeDbgQ= =fudn -----END PGP SIGNATURE-----