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-vtiger-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 17:00:30 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7c0b4eca47e6c87ed1976a0057cbdea919165cb1 * md5sum 04f089da17938bb0d8fa1d708435ee23 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) iQEcBAABAgAGBQJRrh0kAAoJEIXCXpWhbrlNj3AIAIZTqhOu4xNme8P9B/iip7sC noWwuEsrK501GJMY7RL7vJwUtRIHOcUOF2nU6WpjLYYo0SEESSX0R7YRowzzpgmI s2bzYmgq1vpv0fBXs6Dugd9OJzZK7QUsMImFghBvlXo/0Tw547e7Y+j7dGVrAhmx PXwzdjypWN4zROpOWjex0z1pWjfQuX/w7T35j6pYhZ/fJSYEnOclIt+GfdHwxPCe R+CPUY1ncNOzkIP2smaymn5QqafPy1XQ7CXEJiFQGRYYrZMZJM3wB8QIovkiPXbD CPzJ6CoIvqzaJ3ubj3Sn9/qKDhTYeukK3zZAFopxkFeKtSBaOKtuUeoMFLGwBlU= =5UUu -----END PGP SIGNATURE-----