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-rails-12.1-squeeze-amd64.iso.sig
      gpg: Signature made Wed May  1 13:46:17 UTC 2013 using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key"

For your convenience we also include file checksums:

    * sha1sum  eab4d71ef8ccad5679547010acba4ebc06499e30
    * md5sum   c69b7efb7895946495fad82cda34e43d

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)

iQEcBAABAgAGBQJRgRydAAoJEIXCXpWhbrlNC98IALgOFHMhlg2L/KU+r/IZYL+I
lrRbe+wBHOg68W00SO2Z7Phf2eGXLwRoetoE87Qrr64q111pDnCG+b9BDDntCe2q
7+FFMR+mXVrIFbawsA6FHbstNcZhq6QVy2Th77o9OUr8opCcZJljd23lBv9cyPKR
uKEL7yd5i682hJ9UPd0SNcddaOFVGvSpHejK0HM6iDY9sVj1Ug019yFhtvbrAW9K
jeJ+Zb/epjTq4GZ5rszrm3w4VwBc3U27g0O7bPWN0Py/bGxmPrz4NkJHB7GzlEyX
+RvvzL5bSVHdjJovHdLKHi7reM17yrjKyDjWmMVE2Rz8mgtna0DPHn+ANJknoXI=
=ZciC
-----END PGP SIGNATURE-----