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-joomla15-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 21:30:25 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e1ad6a4f404981dcd66247d863b2e3611f9b5a5b * md5sum 49ca682d61c3f47dfeddca8e676efa5e 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) iQEcBAABAgAGBQJRrlxmAAoJEIXCXpWhbrlNloEH/1+Jh8YciN8/xhEenoiOAICw qMU0hD2qzlynjLURA+nP5WkupIOSbPJfECEdBRIx2VFfpJHSyjk8WADlOnTq2mzL nZ57KH6+Bx6pgiOVadA4knFo5hm6Kv2DWlWEhegMjjHYeOCyVu8xpsZWguQF9I7b 2UGlbrJgyaU+VL9eVxrv8s7uUYV41JYIMMxZAr1AZjqjolYSKwQL44u+vvyxy5e6 vE1IUzSoixK4v3sQQHH3lrmvIapxB1T96OiSd8y15VbaIkLg3DGQJlogxyzdyU73 4riy9ilqv0vAvQLpov77o7gJo/cWtI9zQXZthtObgGOhHT+TdE9MUjpkh/D+Hmk= =fBBv -----END PGP SIGNATURE-----