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-12.1-squeeze-i386-openstack.tar.gz.sig gpg: Signature made Wed Jun 5 00:37:59 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e0eeaeb183c1a98c3268f940f7fa2c76d2ba9d34 * md5sum 2e7fcceb37012665b3ef7b4cc354a05b 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) iQEcBAABAgAGBQJRrohcAAoJEIXCXpWhbrlNBF8H/1MbQ2z0dwP1QuYD8qXETgy9 LIqBDoWUHmE0FanQ+XQeYhXGQx0k1mwArh141URrlog7CY5aoVJwlYCw7UOHYr7a wNPH1eO7Pst08nad3bwBUsbtWF2HAqDiUGefi6S8XxUqNBYM/+KZ6beniXZUgAu6 0CsWbq+jQdFIOh4G588EQo68vg6eZPpR0PFjrEQCcXkE06gxHf+N8LGmHEyxZUdV IDvJMvRQhBouJZRM+1yzOS+TAmCWLs7tQUE1xZBlg0oZDlnojE5/BJ81rhltuoTY YKWhutvQrvf0MDB3thUjKXGlFpZdlW4z2HQZAdbSW1JEsXXDHKFC4Ll1eP9E7/k= =GtJP -----END PGP SIGNATURE-----