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-torrentserver-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:38:57 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 14f9595260bfad20ea6e0d4ccbfb18a0099ba607 * md5sum e9950388f8289fe044ae435ec73d1f02 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) iQEcBAABAgAGBQJQM4FSAAoJEIXCXpWhbrlN2wAIAJHv4edEoruyXRoeG4IQGUlh /K6idQMfEdhL9wJX11aLUuCfjJM4CICgwQyoREEuC6lYXcoxWlYo96XGvRfVs8Qm e+cohMTMmiGbUiXo7GHCqyYNest9ZJJo+k5YK9ckglzH7zU3lm2sQSSvuTXlasoM zcW7g+2mVdFtnLs+k7MSiXs+oaX2PxpDflFL+YV4oehaFEHQgFdbeojMNUTdf32E AEvfiyItUwUO2feN9O/HZ3gighFG9PxCOO8XBUTEn2KtdN7FmpZ5UJvziQ5NRtX+ FGHSOu39QFKkbJGejQuUbVIjFDJr7X92c1VFZM1ZerXyM4nziVkLFbuWlMdKyiI= =jF9S -----END PGP SIGNATURE-----