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-silverstripe-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 18:52:06 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d02176702a368701ce6615a4e2ad3caa6d1ae3b2 * md5sum 92ade84c426f1393215d5f34bb02c452 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) iQEcBAABAgAGBQJSXY7KAAoJEIXCXpWhbrlNWKoIAOgamELPoHrwynN15lQ81kRQ +kRdf/fXh2fWWZu7QG3zHMFXk+v6uRAExEaVjeyx9c8nKAgGo5kRYMwko0bFditA ocOxeWQsn9q1vMXj/2FL34OaF+8jUq7pXBY5PtgIxt2M5xCjNciMVj+GrEKdSjrh jDrC9EUdFGqL/eEr0kIqsUdwZzsQlhM6kVve83JvgZmgZ/46d8LMYyLMTH0Pk50s lZ4AmJ8AntD21h8Kougzp8ieVE+fayY97V3pbwZAstP1JjWg7wW9WBFlGq1pjDf4 CzHdXvWlOBEsqb2h4OfAhLqTp4J5veeRKv3mohnDdF83sE+3Tl7VsJvez5fUE54= =N7fh -----END PGP SIGNATURE-----