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·ISAAC Random Number Generator  

At the time of writing, the ISAAC home page can be found at  
ISAAC has been placed into the public domain by its author, Bob Jenkins in 1996.  
My random number generator, ISAAC.  
(c) Bob Jenkins, March 1996, Public Domain  
You may use this code in any way you wish, and it is free. No warrantee.  

·RSA Public Key Encryption  

The RSA algorithm was patented until September 2000 when RSA® Security Inc. released the algorithm into the public domain. "BEDFORD, Mass., September 6, 2000 -- RSA® Security Inc. (NASDAQ: RSAS) today announced it has released the RSA public key encryption algorithm into the public domain, allowing anyone to create products that incorporate their own implementation of the algorithm." At the time of writing a copy of this statement can be found at  

·Twofish Block Cipher  

The Twofish block cipher by Counterpane Labs was developed and analyzed by Bruce Schneier, John Kelsey, Doug Whiting, David Wagner, Chris Hall and Niels Ferguson. Twofish was one of the five Advanced Encryption Standard finalists. At the time of writing the Twofish homepage can be found at The cipher has been made available to the general public by the following statement on :  
" Twofish is unpatented, and the source code is uncopyrighted and license-free; it is free for all uses. Everyone is welcome to download Twofish and use it in their application. There are no rules about use, although I would appreciate being notified of any commercial applications using the algorithm so that I can list them on this website. "  

·ZLIB Compression Library  

ZLIB is a lossless data-compression library written by Jean-loup Gailly and Mark Adler. ZLIB is made  
available as free, unpatented software to the general public at The license  
conditions are set forth at and reproduced below :  
" Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler  
This software is provided 'as-is', without any express or implied  
warranty.  In no event will the authors be held liable for any damages  
arising from the use of this software.  
Permission is granted to anyone to use this software for any purpose,  
including commercial applications, and to alter it and redistribute it  
freely, subject to the following restrictions:  
1. The origin of this software must not be misrepresented; you must not  
   claim that you wrote the original software. If you use this software  
   in a product, an acknowledgment in the product documentation would be  
   appreciated but is not required.  
2. Altered source versions must be plainly marked as such, and must not be  
   misrepresented as being the original software.  
3. This notice may not be removed or altered from any source distribution.  
Jean-loup Gailly  
Mark Adler "  


The RIPE message digest was written by Antoon Bosselaers for Katholieke Universiteit Leuven, Department of Electrical Engineering ESAT/COSIC, Belgium. License conditions ask us to quote the following :  

" RIPEMD-160 software written by Antoon Bosselaers,   
available at "  

·Viking Art - SecExMail Logo  

Katja Bengtsson of Stockholm, Sweden ( )  

·Embedded Mozilla Browser Component  

SecExMail contains Mozilla web browser software from the The Mozilla Organization. Mozilla is licensed under the Mozilla Public License (MPL) which can be found at SecExMail uses unmodified Mozilla executable code; the source code for this executable code is freely available at Software distributed under the MPL is distributed on an "AS IS" basis, without warranty of any kind, either express or implied. See the MPL License for the specific governing rights and limitations.  

·OpenSSL Project  

SecExMail contains cryptographic software from the OpenSSL project at which is licensed under a "BSD-style" open source licenses. These licenses asks us to state the following :  
"This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit. ("  
"This product includes cryptographic software written by  Eric Young ( This product includes software written by Tim Hudson ("  
SecExMail is an independent, derived work and no endorsement of SecExMail by the OpenSSL project is implied. The full text of the OpenSSL license and the original SSLeay License is reproduced below.  

OpenSSL License  
Copyright (c) 1998-2001 The OpenSSL Project.  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 above 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  
3. All advertising materials mentioning features or use of this  
   software must display the following acknowledgment:  
   "This product includes software developed by the OpenSSL Project  
   for use in the OpenSSL Toolkit. ("  
4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to  
   endorse or promote products derived from this software without  
   prior written permission. For written permission, please contact  
5. Products derived from this software may not be called "OpenSSL"  
   nor may "OpenSSL" appear in their names without prior written  
   permission of the OpenSSL Project.  
6. Redistributions of any form whatsoever must retain the following  
   "This product includes software developed by the OpenSSL Project  
   for use in the OpenSSL Toolkit ("  
This product includes cryptographic software written by Eric Young  
(  This product includes software written by Tim  
Hudson (  
Original SSLeay License  

Copyright (C) 1995-1998 Eric Young (  
All rights reserved.  
This package is an SSL implementation written  
by Eric Young (  
The implementation was written so as to conform with Netscapes SSL.  
This library is free for commercial and non-commercial use as long as  
the following conditions are adhered to.  The following conditions  
apply to all code found in this distribution, be it the RC4, RSA,  
lhash, DES, etc., code; not just the SSL code.  The SSL documentation  
included with this distribution is covered by the same copyright terms  
except that the holder is Tim Hudson (  
Copyright remains Eric Young's, and as such any Copyright notices in  
the code are not to be removed.  
If this package is used in a product, Eric Young should be given attribution  
as the author of the parts of the library used.  
This can be in the form of a textual message at program startup or  
in documentation (online or textual) provided with the package.  
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.  
3. All advertising materials mentioning features or use of this software  
   must display the following acknowledgement:  
   "This product includes cryptographic software written by  
   Eric Young ("  
   The word 'cryptographic' can be left out if the routines from the library  
   being used are not cryptographic related :-).  
4. If you include any Windows specific code (or a derivative thereof) from   
   the apps directory (application code) you must include an acknowledgement:  
   "This product includes software written by Tim Hudson ("  
The licence and distribution terms for any publicly available version or  
derivative of this code cannot be changed.  i.e. this code cannot simply be  
copied and put under another distribution licence  
[including the GNU Public Licence.]  
·SecExMail Cipher  
Chris Kohlhepp and Mark Robertson, Bytefusion Ltd.  

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