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-gallery-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 08:57:46 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 182bad3b157000f974de4601b9f02b61d01c1634 * md5sum eed8518e7cbf3208c1d5a9ba1e47925d 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) iQEcBAABAgAGBQJSXlUBAAoJEIXCXpWhbrlND4MIALgxot1SxsPkIRZD4VVPjSL4 535wms3NQ1z1hO4zZZgPmbiJ9jm1TQP5Ru92zWxSQr6YREziZ6wCdg292XYdN5Xe Ib5EKQ8kUcaN1MW4nBU032QQqDHuSyYo2trz80Y5ViMW9x2jK8R2Pv+A1nQSAx+c lcHdJUxysqKGrUOoBzu5nbLb4jvrU+Gf8a95BJfHwgHs8IvoHlTCzKGA4zvlvZnp aaczStn9iL1qoRMNUtiGFcn23XwiDANvh0D1ZIlzQrmjw42LEkqA4D/reLFqhfl7 1roBbzaEMjn40TisnnCtHfYOfmc+Qyj1j1yL72nxxOriTT3GNd8XocuwrJUyEvk= =6aB5 -----END PGP SIGNATURE-----