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-b2evolution-12.1-squeeze-amd64.iso.sig
      gpg: Signature made Wed May  1 12:10:05 UTC 2013 using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key"

For your convenience we also include file checksums:

    * sha1sum  12c99e350f8242a97fc0137a5f71aca70dd12418
    * md5sum   91125331348b40b98a86f6f5b1a61bba

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)

iQEcBAABAgAGBQJRgQYVAAoJEIXCXpWhbrlNwikH/ROF7s1GSNqe2bHGjOn7QxI6
c1lShYBnPz7Kgsco1AJ42braC3RSeQO/E6J8gpD/IBi3A4wovUPFcPwwluijdOWF
utLS27pY+RrA5KY3heLWMRtwlCKjLCvwySEn0ZdgA6H2zFOL4H0qwTqZwb5rJl6M
SHCaqB0VGVl0llF5uF2L0FWrEQcniXDvfD11q9IuZfusp5Vz43knxABVfQwvgWNY
fuK5Vz23RCgpTMWlDKmyNwOyM5NOYkCV/HAEtC9PNfG+IKMbD2UTRVKX/WrPvEEm
fUl5Lm9tFPCVL8Fyi5O/+DhO6MWcjCTvbxyWIPyRVbu545muoqC7pPEMlKXER9g=
=CiHx
-----END PGP SIGNATURE-----