John the Ripper copyright and license. John the Ripper password cracker, Copyright (c) 1996-2010 by Solar Designer. Portions copyright (c) by their respective authors: The optimized DES S-box expressions found in sboxes.c and nonstd.c have been produced by Matthew Kwan and those found in sboxes-s.c by Dumplinger Boy (Dango-Chu). MMX and non-x86-64 SSE2 code corresponding to Matthew's DES S-box expressions (portions of x86-mmx.S and x86-sse.S) is based on Bruce Ford and Rémi Guyomarch's MMX implementation. This version of John the Ripper is hereby being made available to you under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. John the Ripper 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 General Public License for more details. Relaxed terms for certain components. In addition or alternatively to the license above, the following components are available to you under more relaxed terms: As specified in the corresponding source files (sboxes.c and nonstd.c), Matthew Kwan's DES S-box expressions may be modified, redistributed, and used for any purpose, so long as their origin is acknowledged. Matthew's original files (prior to modification for John the Ripper) are available at: http://www.darkside.com.au/bitslice/ http://download.openwall.net/pub/projects/john/contrib/bitslice-des/mkwan/ Dumplinger Boy (Dango-Chu)'s DES S-box expressions are also available under the 2-clause BSD license: http://dango.chu.jp/hiki/?Enhanced+Bitslice+DES http://download.openwall.net/pub/projects/john/contrib/bitslice-des/dango.chu.jp/ As the copyright holder for the bcrypt (Blowfish-based password hashing) implementation found in John the Ripper, I have placed a derived version of this implementation in the public domain. This derived version may be obtained at: http://www.openwall.com/crypt/ The intent is to provide modern password hashing for your servers and your software (where the GPL restrictions could be a problem). Finally, I have placed the CRC-32 implementation (crc32.c, crc32.h) in the public domain. Commercial licensing. Commercial licenses (non-GPL) are available upon request. -- Alexander Peslyak aka Solar Designer <solar at openwall.com> $Owl: Owl/packages/john/john/doc/LICENSE,v 1.8 2010/06/13 16:16:52 solar Exp $
