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-mambo-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 14:17:12 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3390e2e43e8365c9e54ce1766451b97c49089b4c * md5sum b7008ac2318705abd3bfe7afa8a972f0 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) iQEcBAABAgAGBQJRrfbgAAoJEIXCXpWhbrlNLTAH/RBA0jaWP1FRKQue8kIocGRy LnWuWpK/+l3tGnEIiBZxFjqRCpQMbSKeKRVzbfgn79qrn8CBEe+ueABPHfPAmae3 U/Oszola01IspVPktERuEJdkdyaJz9lH/d61VswMAzrW5Mw8phaxjXPvPT8RZg/t j7EZN2jXCM5phZRepq8+TjufmoYNYmkTeqwPmboGWqaTr/T1fjk7g0dcRCv51HH/ As7k5+Zv3U2CnA9woZALlXNBKIuVW9cK3wW7LNiggV37w+UCE85DFhYZe08STbWx I4gibSugkBm+rpQafKRsTXLu+hDH5O9YdpVzjjWzr9BGWmqwDQENC7fEg3tdDZ8= =K3nd -----END PGP SIGNATURE-----