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-core-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 18:56:04 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5d8f879946cae932eb89a5063a3418375e462d54 * md5sum 1a92047a9b91c97d247130b7ba3ff819 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) iQEcBAABAgAGBQJRrjg8AAoJEIXCXpWhbrlNlNkH/jx8esOuSIzj9PBnOJKA93En rxsZmDJBjwV7t2lj5eGo92sMtMzpsOrTTm8jxc9SwALM4TQteQtM4tRiumg15Ija 8dHQZx93RAyuiFqMAgDZF6/FvIW8KlH/R+5Fb3sPPg5hVW73zp88Ftan8Xfx3du2 N0qJVuPEcBbuJplzMfdOvBrib85rkdoCzmHknPiklMKmzKD3MR+MQaNjNzoVVCK2 E6nOLPz+GCZk2e3EA5Gx+UqkAN9DQgIfHbuK0G/JCoJKbBHsfGXKcYTNgl9rnBva 99Pz1heIFchwZIBb1spEryQLvZvLCP1CyRDTT1acewGiJiDm2E4LuvJyOh6VeC8= =uFAc -----END PGP SIGNATURE-----