Main author:
  PS <p@0x53.net>

Contributors:

Thanks to:
  Laurent Bercot <ska-skaware@skarnet.org>
  Dan J. Bernstein <djb@cr.yp.to>
  Paul Jarc <prj@dogmap.org>
  Jonathan de Boyne Pollard <J.deBoynePollard@NTLWorld.com>