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-i386.iso.sig
      gpg: Signature made Thu Apr 18 13:08:30 UTC 2013 using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key"

For your convenience we also include file checksums:

    * sha1sum  904166ba3f8d4a3c1d30ac6e196934bd92ad7e60
    * md5sum   6808620d2919df9f89ca9b61a12577b4

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)

iQEcBAABAgAGBQJRb/A8AAoJEIXCXpWhbrlNgmEH/0zne45BKLKsYrkASeyvmEvf
u14BlwK2VzecYW75DnoUq5Do6RLIzvJ37M/JYymjnil7UpPbraFJr2PNodFndt/x
LzMQ4VVGHHuAR9HmXAd6kfJE5iJmOWGxJCaSBpUBKuc6ckc5Rnu4u0B+Jp/nrwDF
SKnw7ukFHlUahKkSfispuj1vBAeVsMkwVUXcZWYaPBlgNHHDAmI2+YcLmS7YX719
mvmI5Dg+FoN3zO7RRItOnTgxBvc7RqgGdlMZ5LHb9IeLI9ZvdaZQhcphYBmvpZyB
t+q0lCRb7IeqjT7ulV3AIVvnmg6ogUtWhaZqWOuXLzqCDqlGzkUODIvzNBnZZrA=
=oVGo
-----END PGP SIGNATURE-----