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-mibew-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 14:18:54 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 806bc6d1c81174c8ebb2b3c759dc59b0fa379461 * md5sum 5394d771c3c2bd01e4dd77426e9449af 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) iQEcBAABAgAGBQJRrfdGAAoJEIXCXpWhbrlNQC8H/Rr6KOJNNIP76buB7nbG8xP8 J0UzzzFXlBqUjt+II64/sdHZjfIzFUdMmaI3BKikovX/tl7VpBZ58ieYOrqSEvcz Ei3AfttyNHmeQWkp6Dwia2WkwbcEetdz1phfiYWoPrZ6hJU5eycS+PIX+phC+1ji V6xPeNUB+lQwpNzaq5CYNG3fJtqTWLHBzwvw4PRZYa7m9CQvhnRkWWPMFl/CjBAw qqgvIsiwrHAE2vvxSPrJOa5zESAekEgXH+1n5jeORU0Og5ezUZcUVS0jgK4F8TvN 0ROEw+2TMns0t6h63/qQ94MfAFUQPFsTz+dO6bsIT/qaHBfVbcCNDZkiUA60y6U= =S2bO -----END PGP SIGNATURE-----