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-phpbb-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 09:46:56 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3374817182a113e8246315760c0c47ea1f822d14 * md5sum 5f4104e5fb2afe57ab6402094afec475 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) iQEcBAABAgAGBQJSXmCHAAoJEIXCXpWhbrlNYbsH/iw3cBltuERZKTp59PnsaOFg 4cVUkMV26E4F8G1cQT9QVi6JfvvQL6+nNI3ykQgUw3OPgRnLc/cUCgUwbZZQ5bpO LdnLlQfol0xNSz8uJVTHfUUqqg9EktSR5WWH53UYPLekRxDjEFPKtQJSVFSxQbps pIhoR/Ymcu1Ko7+fctGsoOnhRUsSOmmqotiXyQHmnbK0iIIfHl0k02e2yAL/y8GI dNHgT8k7Fh9zXy84Nu7o3LzSVjCOjWJBLlTaTd7d3x0KdG7tAKnjXHddmr110tw3 77cxqOC/AuSRN15IJ9SBlCG2wWKttzmsUeMHXw2M+Un3gSfmJcOvHgUw4Bkhck4= =MOc8 -----END PGP SIGNATURE-----