Portions of this code:             
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Copyright (c) 2000 The Legion Of The Bouncy Castle
(http://www.bouncycastle.org)

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the "Software")
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense
and/or sell copies of the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
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Twofish is uncopyrighted and license-free, and was created and analyzed by:                   
Bruce Schneier - John Kelsey - Doug Whiting
David Wagner - Chris Hall - Niels Ferguson
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Cryptix General License

Copyright (c) 1995-2005 The Cryptix Foundation Limited.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
 1. Redistributions of source code must retain the copyright notice,
    this list of conditions and the following disclaimer.
 2. Redistributions in binary form must reproduce the above copyright
    notice, this list of conditions and the following disclaimer in
    the documentation and/or other materials provided with the
    distribution.
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All other code is:

Copyright (C) 2012 The Android Open Source Project 

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at 

     http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software 
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and 
limitations under the License.