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-cakephp-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 12:37:35 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 91c91705119df0b34a275deef1ba20ce879ae29d * md5sum ff1ef8ee68342c1fd427c70d56dd47c7 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) iQEcBAABAgAGBQJRrd+HAAoJEIXCXpWhbrlNEn4IAIDCpuR59Y/VrI0C+iLIR5ea c9k3LGzisTD11hAmKA2aCNoTuTmyb6vGXdl3U3Z1pAPvWndHBBetva6dMhxiyNZe eQpDPo5HDdyXCtqdwVofB7zDkw95472OZG7hflErq0v07ayo9P9s8oqC/LkxCfCv LAC9Yc1jiXwmpI17URB7398QdaWw07/w07spqPO0YBVwNjC2FJDyPWZOtKnchkh3 vsg1pXOxaViPhupnOzpsOKUqQAvvf5iNTSPa8JDwEmyN41q6dA35k3PapwP7hFZz LOPUn4VYNQmZDmJZlV0umXWSCQOzE1qE00GFmR9dN3wTtovICLIDb3eXcnnMKwY= =fbxi -----END PGP SIGNATURE-----