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 <release@turnkeylinux.com>

    $ gpg --verify turnkey-concrete5-12.1-squeeze-amd64.iso.sig
      gpg: Signature made Wed May  1 12:23:17 UTC 2013 using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key"

For your convenience we also include file checksums:

    * sha1sum  1bac5226c5116bc1a29966072f6c27ebb5600c9a
    * md5sum   c703f865427e8c1c93c2654efdadcdad

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)

iQEcBAABAgAGBQJRgQktAAoJEIXCXpWhbrlNWdQIAIkYm/Rk9ohN5CAOIp4zhAQR
yhrlOlKCJD6qQEtn4/yjQLL/wRHLH2/+5j95z8hw8iV128gBrlfYYvRCdX7SZb/e
R8vwLvhS5J4gL2+7gkyqTGmGMEgaycjEitsl/NrciiKdM7kIIY95r1QDdIMxdSOk
WAxGd3XeTZlWXXfNrrSIk1mkYA8XQtcY1pJmEqeo9+qmNWdWP/wh3sSm9duXhg77
3lfGqCxNko3IIg7RUawXJbWJAjRQ5lzJOsuCrk43mZaVBwveQbKqrGNNXtBhMvjB
td4J4ydyAUE8mh/deVnpAxFNTxuiwyAfVn3JbLIIJXFvcEWAsJjVcnf1gdrb0LY=
=AAtQ
-----END PGP SIGNATURE-----