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-joomla15-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 15:33:30 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 54b5df7b0933ad0c38e9141b2b11dae778b23ae8 * md5sum 8adbd7b7b847b5ae3cd166a299603af2 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) iQEcBAABAgAGBQJQM6pAAAoJEIXCXpWhbrlNkq0H/0j9hcF9kOAj1Oawn3hPZ5EP UY8j5iWpJbWMJbFveOh9+DeYqlwPWAnP+bilA9KATTN/xpRJTLI1P0EMhYY+fz47 d/GnCbYMwIQJve6zf0QQoO+udKswHrdCdhkhuIRNl77FZ1a3lpLFLeVqI65xH8uJ n3DtcnBxENvBeZxdwsPEd0LTV/3CFam7M6t2rTWSHcFVR5RVOTGSeT+cfJh+u//M mSluegPyHd00uDMosKytoNR60Zd7JOYCiOYXqUzRIPBvORMK39N+brD9YcuCmQfq BC1Ogd8HnpAwNKfNlgfkR7gJ1RMNVMgcnkIU+S+EFtfNnijQftiluMRqZTGhT0c= =TnSx -----END PGP SIGNATURE-----