.\" $Id: md4.copyright 1.2 Thu, 30 Jan 2003 02:37:26 +1100 abo $ Copyright (C) 2000, 2001 by Martin Pool Copyright (C) 1997-1999 by Andrew Tridgell .Pp This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. .Pp This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. .Pp You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. .Pp The algorithm comes from RSA Data Security, Inc. Created 1991. This code was written for rsync by Martin Pool and Andrew Tridgell, then heavily modified by Robert Weber and Donovan Baarda in 2002-2003. .Pp Equivalent code is available from RSA Data Security, Inc. This code has been tested against that, and is equivalent, except it is faster and licenced under the GPL.