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+=====================
+Copyrights & Licenses
+=====================
+
+Copyright
+=========
+The BPS library is (c) 2004-2009 `Assurance Technologies, LLC <http://www.assurancetechnologies.com>`_,
+excepting any code noted below as taken from :ref:`third party sources <third-party-software>`.
+Such portions are copyright their respective owners.
+
+License
+=======
+This library is released under the BSD license; we hope you find it useful.
+
+::
+
+    The BPS Python Library
+
+    Copyright (c) 2004-2009 Assurance Technologies, LLC
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+.. _third-party-software:
+
+Third Party Software
+====================
+BPS contains some code taken from various third-party sources, which have their
+own licenses (all of which, it should be noted, are BSD-compatible).
+The following is a list of these sources, their owners, licenses, and the parts
+of BPS derived from them.
+
+GPW
+---
+The class :class:`bps.security.pwgen.GpwGenerator`
+is a python implementation of Tom Van Vleck's phonetic
+password algorithm `GPW <http://www.multicians.org/thvv/gpw.html>`_.
+It's released under informally worded BSD-like terms.
+
+jBcrypt
+-------
+`jBCrypt <http://www.mindrot.org/projects/jBCrypt/>`_ is a pure-java
+implementation of OpenBSD's BCrypt algorithm, written by Damien Miller,
+and released under a BSD license.
+
+:mod:`bps.security._bcrypt` is a python translation of this code,
+which is used as a fallback backend for :class:`bps.security.pwhash.BCrypt`
+when the external python library `py-bcrypt <http://www.mindrot.org/projects/py-bcrypt/>`_
+is not available.
+
+This is the license and copyright for jBCrypt::
+
+    Copyright (c) 2006 Damien Miller <djm@mindrot.org>
+
+    Permission to use, copy, modify, and distribute this software for any
+    purpose with or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+    MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+MD5-Crypt
+---------
+The class :class:`bps.security.pwgen.Md5Crypt` is a pure-python
+implementation of the md5-crypt password hashing algorithm.
+It's derived from the FreeBSD md5-crypt implementation `<http://www.freebsd.org/cgi/cvsweb.cgi/~checkout~/src/lib/libcrypt/crypt.c?rev=1.2>`_,
+which was released under the following license::
+
+    "THE BEER-WARE LICENSE" (Revision 42):
+    <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
+    can do whatever you want with this stuff. If we meet some day, and you think
+    this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
+
+PEP 3101
+--------
+:pep:`3101` defines a new string templating system
+via the method ``string.format()``, which is built-in
+to Python 2.6 and higher. :mod:`bps.text._string_format` is a pure-python
+implementation of PEP 3101, used by BPS to backport this feature
+to Python 2.5 (see :mod:`bps.text` for usage).
+
+While the current implementation has been rewritten drastically
+(to pass the python 2.6 format() unittests), it was originally
+based on the one created by Patrick Maupin and Eric V. Smith, as found in
+the PEP 3101 sandbox at `<http://svn.python.org/view/sandbox/trunk/pep3101/>`_.
+While no license was attached, it is assumed to have been released
+under an equivalent license to the `Python source code`_.
+
+Python Source Code
+------------------
+BPS contains many small fragments taken from the Python 2.6.2 source code,
+mainly for the purpose of backporting 2.6 features to python 2.5:
+
+    * :mod:`bps.text._string_format`, contains a modified copy of
+      Python 2.6's :class:`string.Formatter`, as part of BPS's
+      Python 2.6-compatible PEP3101 implementation for Python 2.5.
+
+    * :class:`bps.types.namedtuple` is a adaptation of
+      the Python 2.6 namedtuple class, for use with Python 2.5.
+
+The Python 2.6.2 source code is licensed under the
+`Python Software Foundation License, Version 2 <http://www.python.org/download/releases/2.6.2/license/>`_.
+
+UnixCrypt.java
+--------------
+`UnixCrypt.java <http://www.dynamic.net.au/christos/crypt/UnixCrypt2.txt>`_
+is a pure-java implementation of the historic unix-crypt password hash algorithm.
+Originally written by Aki Yoshida, and modified by others,
+it was released under a BSD-like license.
+
+:mod:`bps.security._unix_crypt` is a python translation of this code,
+which is used as a fallback backend for :class:`bps.security.pwhash.UnixCrypt`
+for platforms where stdlib's :mod:`crypt` is not available.
+
+This is the license and copyright for UnixCrypt.java::
+
+    UnixCrypt.java	0.9 96/11/25
+    Copyright (c) 1996 Aki Yoshida. All rights reserved.
+    Permission to use, copy, modify and distribute this software
+    for non-commercial or commercial purposes and without fee is
+    hereby granted provided that this copyright notice appears in
+    all copies.
+
+    modified April 2001
+    by Iris Van den Broeke, Daniel Deville
+
+    modified Aug 2005
+    by Greg Wilkins (gregw)