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-phreedom-12.1-squeeze-amd64.iso.sig
      gpg: Signature made Wed May  1 13:25:19 UTC 2013 using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key"

For your convenience we also include file checksums:

    * sha1sum  06a53492f2a63d2d3dcb13e17b811aa510add409
    * md5sum   b8f68ed9e1fef570443f69cd40f1a1ec

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)

iQEcBAABAgAGBQJRgRe2AAoJEIXCXpWhbrlNnKcIAORpiLI/hDU8MAPQd3aMrP1s
r5zWo7w0oYlMaajfB7EEM9PhhWWxEU3MmvVfJwGSO+81vQ/g2LCvQhp5TEA90Ucx
4kCJ/5QFBEYbmSX6ZNYf1THgxh0Dc2lcNIgfA3XmzbmZtvfIt4Ty6IEsdbEz27qw
Wt2ODve4XuqAoK130CdbMrbLOWRa+PuvsCP9CB60GpQ3qN3XVlHQxITkIE5H+9DN
/UbETeiOd0L2ejDc4H9MAQKgnaYi1+TQaTlCf2QDW3gZOgl9DOW3P1O4Zt5Q941T
kM+aGX4cG4RNsZsxWNrGIYfI62hNzzzShR7cBgH+aZs1O1QR0evUu13hYJQwcVI=
=+5LD
-----END PGP SIGNATURE-----