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-simpleinvoices-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 18:55:12 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 28ba3b4bde487c72485dbac87a98c30ef80e8293 * md5sum 15aab5b9d9a28f97751e5c4323429969 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXY+GAAoJEIXCXpWhbrlNliEH/3VR4krmJzd1SMzc6ICIaCgn t6liiHRDuzjpI0GZ2LbnYmt28aPoJu2emi2UKD/aINSzBesZ+oKzG9UyJaVmJdoh qXz+paNXZ0/gWnU+8Zxa80G3CtXONA5g3h9BuU0iIJ9nF5hIcAZnBUydcY9HXTnh hXwFYYBB9w9K2+V8z0zKBW+1k0wD7QIgnKuSobsxj4Pd/U+CtScUMGwhSDxl7p7/ 6mmV+55PkwgHVJRVTQlENUPkHMpFzJgJpo47Rb5vRsIzY7HNeBhOm1hYd+oB0XzM GNiUKnYFPrjfshAgYhhRCOuJAeQBPjvk/bGgj+BM+oYZtv4b6/GsJSUAQzxwYLI= =yfTt -----END PGP SIGNATURE-----