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-simplemachines-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Wed Jun 5 00:20:30 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8b24da2ad82d72e9e82a4ee06979f61212097a09 * md5sum bd8680b5bcbd4d9cf14cccf8e39a269c 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) iQEcBAABAgAGBQJRroRBAAoJEIXCXpWhbrlNpBIIANcYZ5CmdG7VJVZGg3/NB5R6 SYQuAb0Ap8cqHahDgfyGIFuxlu/R3XjBn7uycHkcTRpvh6GqDHOaWV3ZHg3QV2Ec rxd1M9OVhKNy6AEXNN7/wD5ZFNbVVbKToAoKy/h5iGAVY5y4MjSo8teKQI49ld4l fE2IUyiHgibMiJS1byE95CVy6wopgDP29PxB1BCN9hIOq4NkgZSm6gIHk/XNGRCo N6cl8F2hUm+ApIGhLfYYo+GLcZnkGOtiFSHGSQhzZLZb1ftCvyYcRVB+vDQUVqBf /qGKjxqsKmPxf0hND25p6F6vThcogygdxIgnuJwvVguR0amcK1YfNWRC+nf+L+E= =SBl9 -----END PGP SIGNATURE-----