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-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 08:12:00 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum faa9e0cb8d594917bf2fac5d75b5801a178539e7 * md5sum 94e23b661e33cd51d22646a5fc2c3a73 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) iQEcBAABAgAGBQJSXkpGAAoJEIXCXpWhbrlNa1cIAKeC7NqvR9VjPh7QGAAV/6tP 8xbI0pEPp3DSFMXBhse6Rt6bNKo+WjcvFQNglflvp5YAhG/QS2YO58aZxQHXyU32 /DgKY1FHljNyzAqlsUe+bCzOrha3H6hER7xFldTNJGVAIB7oU5WnozgoK2hWzZhm bN/QpV3qgW25XdKP0AIM7erGP0/P7Gc4FUpxfW2hsuzgD7mm0qeYtOzwzTbXtoXT wZr6yr2fxcwppXMQXgzrAIw7puP+QhYvgnS1AYVM33VksGz6Zy7EnNFlBfTUcjT8 cRqNke0sj1+RIsDVpBp7KXQofUf9T8wvlbcMQSnGwsQasaZ0o0gDtw560v3OpVE= =cndK -----END PGP SIGNATURE-----