fluks, 'free LUKS', is my unencumbered and nicer (than cryptsetup)
implementation of the LUKS (Linux Unified Key Setup) standard for disk
cryptography.  Basically, a header is written to disk that includes the
private key in encrypted form, which is used to read/write from the disk.
The private key can be encrypted by multiple passphrases, allowing for
(1) easy to remember passphrases and (2) the ability to add, revoke, or
change the allowed passphrases.

A better place to find build/usage information:
http://wiki.github.com/markuspeloquin/fluks

Markus Peloquin <markus@cs.wisc.edu>

========================================

BUILDING

    Dependencies:
  libdevmapper from Device-mapper (sources.redhat.com/dm)
  boost (boost.org), at least version 1.35.0
  Boost.Build
  libuuid (multiple sources):
      e2fsprogs-libs (e2fsprogs.sf.net)
      util-linux (freshmeat.net/projects/util-linux)
  OpenSSL (openssl.org)

    If you were wondering, libuuid is one of the few BSD-licensed libraries
    in e2fsprogs/util-linux.  Now just run

  $ bjam release

    This will put a (mostly) statically-linked binary in the `release'
    directory.

INSTALLING

    There is no installer.  Just copy the binary to a bin directory.

  $ sudo cp release/fluks /usr/local/sbin