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-tomatocart-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 10:38:23 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f99f3729901a37ea7da7687c37c5c1daed45218d * md5sum 957a68eefcc81fbfc2041e4b3ba10cf3 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) iQEcBAABAgAGBQJSXmyWAAoJEIXCXpWhbrlNETEH/3fA9bhczKUK7LKM/AiTf5+L TSN8GOalsfbCFq3AU8295rLdjHUOA43x9/n3QEB9fNzn4Qlhj8kc2djTlKdovXol vhadnEbzl4Jc1xKcZyRHEcm3k75on9z6vJjkfUjK5ZXI4a21MbN3caKM1Ay99QKF nZbp8LxmmpHd4nloOvZm4PBUZs0Jog9lCcqPyoSANRIXM9h7in+ctho2g+XXwPGu G9mXc/qBUJ8qOuOkgVeOSGEYU6shuJmqpZdAofjLkgPDFW8L7kJT2SCLeA2SuvWw Na61PiwbZlTcddQND9Cna+Ve8iS12W7nKuIk3B6xb1RBALXQkeiKR8QwtmfcWRM= =xaoB -----END PGP SIGNATURE-----