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-codeigniter-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 12:56:00 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3df1207436a1b589bbcc0d7f90dececcc41a66e9 * md5sum 2d906a2491f40ea3e78c3d36c5b586ce 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) iQEcBAABAgAGBQJRrePXAAoJEIXCXpWhbrlNgJsIAJXwZ+Tr1nRIy0/GVwo8JqYu M9fA3Ud33cOKNFTTxUdNBoWb3sPNeC4KxPFw4W3syY2OiAMG0YlMiMv9DSDnk+kV hEKHw01MQtfiGq671xq8LiOeb/Dex4QG8LghQyt1TupDkuWxZq084v31eZMpZFxY KTzDz4y3uA7AWMQDbMnymAxZFYNIVaOhBKA5B67imMsbA/klbV1FIiJD8qr+w4dv /gS32jMkyh5TJ5ddi8xwTbuq7ocqRSzSo+TSqk+s/XUU+8nLTYNW+MHhYQES+mlk PDngm5bKKBlMm0wbw56xqBtyB95Z5d29e2/cNMMvz2puV+iCwtwg0EiXBWo1QnE= =ocgD -----END PGP SIGNATURE-----