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-twiki-12.1-squeeze-amd64.iso.sig
      gpg: Signature made Wed May  1 14:00:51 UTC 2013 using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key"

For your convenience we also include file checksums:

    * sha1sum  106cfd722cfb442f30f616ec0e3b12b0fc0b0686
    * md5sum   caae44b601d23cb33d13edd884acdf31

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)

iQEcBAABAgAGBQJRgSAJAAoJEIXCXpWhbrlNjMcIANumWQQr2DWQeBoReZBtWbCq
fdiTEX2R6TD0+4eSZAFTcwZo0kR7vBaK2bg+rNkJL/pBe/3DcpKP8Ji3INQs9SUq
44XKsw3FDz8Sqpqt9K6H9fbvqI2OHOVY961rgednqcLmTriJHdvbSJQV+ohjvuK0
UdKI3q7mJkRxVs9GhvMIrzChuOPRhNsiV1saajg+yhNqyuTIIyelDpDXoW2KSFYv
mRcoJznTvvYkTZ7WVljXxVqLS/A5ZLJ7pSTIBwsqGEGhOc2eaLPL8F/OE7Slqz0R
CeeKu+/lTH/1/DpfabEZiQ3yQcsIEOl+C8l9wSPgT6RgQCgOA1NZq5TlQuk5QuU=
=kH+R
-----END PGP SIGNATURE-----