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-openphoto-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 09:25:41 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum fda93c195a9ae28c221e763bfd0f149448ab5875 * md5sum a544e613a4d2c6e58c8d77d9a4fceea5 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) iQEcBAABAgAGBQJSXluJAAoJEIXCXpWhbrlNkOIH/Rja3TmlZSEmdBWvzEPY18Wm EqZ3lNs89eKQULHKOhUtWOWxC5GPkZNzTZU7LHCy4t1kQ+BiKVJtOhEbhEx1zktj Q6CsuYb1UUWW3lNixK3RcW5uBE02chGZHdWoyPGemLkS6xIECwWmdLf+VoWLeV1W IHG/nQhYzHL2Ou699ZWV5BEs4VCg8VJmXhRUxa75bWkuZ1cONDu19WVMo9frRZG4 y9sZ2xEOhCfrecDTG+vSG4rtERugsNZb/xa+xQ9gS+jiBCypcXB9Im30tmYRu4cP u02sDJ+sLEeChtEe5ualLm6gS20YV4kzQbunTnIDGFA6b/kUOirJz8rCXsQtvzw= =RQNB -----END PGP SIGNATURE-----