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-processmaker-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 15:28:49 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2fdd5e6549caeb2d35fbefe6ee297e306d2b1696 * md5sum ca7ae4d238fe1cd138ff2a52833f3771 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) iQEcBAABAgAGBQJRrgemAAoJEIXCXpWhbrlNsc4IAMVhMaqvA83gpw6ioVGtr/kN FSnOWE7FaaDExosNPfShub9zhBPdAp44ZZlY8XI84R7jITbHdCZJW1JE6rsliSpm q5cqvko7dAdtG9UzNNky7kYjWsPvw5aqqhBnwsdBFqxS7Sr224YvezZMxPeRDL3E whIszHP9Uz8Z7rRD8VgbeZcaEq9DLPOPHHWWE9QUwEMjIDhI4Txx8yfd3zo7lFw7 hiANdjATUwb4GVuj9m+Q4vYbXVLM5AKjyr0EVEMSLoQwc9BBIRzh5zT33LrbU8Bm 3LW08DLzOGOjBWRn3FQo3BYjMoSdrNPHtr9+IN31qZ59xYmss2dyyCjuix4icDQ= =sAWH -----END PGP SIGNATURE-----