Acknowledgements

Acknowledgements

Previous Top Next

·	ISAAC Random Number Generator

At the time of writing, the ISAAC home page can be found at http://burtleburtle.net/bob/rand/isaacafa.html.

ISAAC has been placed into the public domain by its author, Bob Jenkins in 1996.

-----------------------------------------------------------------------------------------------------------

My random number generator, ISAAC.

You may use this code in any way you wish, and it is free. No warrantee.

-----------------------------------------------------------------------------------------------------------

·	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 http://www.counterpane.com/twofish.html. The cipher has been made available to the general public by the following statement on http://www.counterpane.com/about-twofish.html :

" 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. "

·	Info-ZIP Compression Library

Info-ZIP is a lossless data-compression library written by Mark Adler, John Bush, Karl Davis, Harald Denker and others. The library is available free of charge for commercial and non-commercial purposes. The license conditions are set forth below :

This software is provided "as is," without warranty of any kind, express or implied. In no event shall Info-ZIP or its contributors be held liable for any direct, indirect, incidental, special or consequential damages arising out of the use of or inability to use 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. Redistributions of source code must retain the above copyright notice, definition, disclaimer, and this list of conditions.

2. Redistributions in binary form must reproduce the above copyright notice, definition, disclaimer, and this list of conditions in documentation and/or other materials provided with the distribution.

3. Altered versions--including, but not limited to, ports to new operating systems, existing ports with new graphical interfaces, and dynamic, shared, or static library versions--must be plainly marked as such and must not be misrepresented as being the original source. Such altered versions also must not be misrepresented as being Info-ZIP releases--including, but not limited to, labeling of the altered versions with the names "Info-ZIP" (or any variation thereof, including, but not limited to, different capitalizations), "Pocket UnZip," "WiZ" or "MacZip" without the explicit permission of Info-ZIP. Such altered versions are further prohibited from misrepresentative use of the Zip-Bugs or Info-ZIP e-mail addresses or of the Info-ZIP URL(s).

4. Info-ZIP retains the right to use the names "Info-ZIP," "Zip," "UnZip,","WiZ," "Pocket UnZip," "Pocket Zip," and "MacZip" for its own source and binary releases.

·	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 http://www.gzip.org/zlib/. The license

conditions are set forth at http://www.gzip.org/zlib/zlib_license.html and reproduced below :

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 jloup@gzip.org

Mark Adler madler@alumni.caltech.edu "

·	RIPEMD-160

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 http://www.esat.kuleuven.ac.be/~cosicart/ps/AB-9601/ "

·	OpenSSL Project

SecExMail contains cryptographic software from the OpenSSL project at www.openssl.org 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. (http://www.openssl.org/)"

"This product includes cryptographic software written by Eric Young (eay@cryptsoft.com). This product includes software written by Tim Hudson (tjh@cryptsoft.com)."

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

====================================================================

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

distribution.

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. (http://www.openssl.org/)"

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

openssl-core@openssl.org.

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

acknowledgment:

"This product includes software developed by the OpenSSL Project

for use in the OpenSSL Toolkit (http://www.openssl.org/)"

THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY

EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR

ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,

STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED

OF THE POSSIBILITY OF SUCH DAMAGE.

====================================================================

This product includes cryptographic software written by Eric Young

(eay@cryptsoft.com). This product includes software written by Tim

Hudson (tjh@cryptsoft.com).

Original SSLeay License

This package is an SSL implementation written

by Eric Young (eay@cryptsoft.com).

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 (tjh@cryptsoft.com).

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 (eay@cryptsoft.com)"

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 (tjh@cryptsoft.com)"

THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

SUCH DAMAGE.

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.