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-processmaker-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 15:38:09 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum a03a8bc856c6c7a7de5d30a9b25fc80f08e2b593 * md5sum 6f2d6c2d29e6cec3de1bd0c380314e3c 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) iQEcBAABAgAGBQJRrgnXAAoJEIXCXpWhbrlNFq0H/R5OQ+j9RYAQXzwqF+XJYmQT fy0G2jovZ9jzVNGEDtV/cnGjt7fcez9qIYuT1bSL4UUANJwp7TQbyvcmvvRmQ1Pv 1FwvAKVjVwvNV6W6nxZFFT3c9+rP5xl7jxWSsowTv+VXxaaHHQ5kSsuzjjKYAY0Z z77A4onqlsuM/tq9DKCoovlFDdKLl4QoQ0e7+vUS4dkNlv5g7pMI92ptfzGGnQeo UZ2g/DdCKVo+d8ANvH8pisxFGBQoFXWOlrH4Gb9hPM7MBsyYLHnRlEqllb0Z8lDW BNokQGZDAOW8OC1gIAVKI4KpHGMjPdBSRS1PuVdagolzOKYbwmNNvktHn3EbhCg= =CvGa -----END PGP SIGNATURE-----