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-owncloud-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 09:44:21 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f6420124dfef9cb083d3631897dd7627df5fb9a9 * md5sum 5fc9ef521eedaca424e12f306d8dcd9d 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) iQEcBAABAgAGBQJSXl/sAAoJEIXCXpWhbrlNHNwH/3DuMsroSjs72sbU0V2sSJMG DscfUuQmkVRT+uvVJ6GpVQA65DBMZz2ExlXiHxJcVTqzmGUOxc/11Yw1xTS3kl95 ktvelazoV02KR/kZTUaJzDB1ZUlm0/33dW9H5s93TPvCHj3rWycKxPbUZmSYOBnn 0l5N8wpyJBtpWBJcz/eVJJdrhN1/h2ka8InIzjXWwUXCanxbFOO2U43LeaSI7BKu 1R+nwh27njJPI62quPWfAnWq/NlxBnH0U+qN7RrIVagLNDduz+4IvrJLZNZuq7WZ jWpiynW4YuACgtjmXc/Nw9EWLK+FWZz0OSShiCMbzYu9zQtTjAdwaE4RMlMkc8Y= =kTLk -----END PGP SIGNATURE-----