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This chapter contains the copyright notes and acknowledgements
for the different ciphers, message digests, etc.
| DES |
The implementation of DES (libdes, SSLeay) used here is
copyrighted by Eric Young.
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| IDEA |
(International Data Encryption Algorithm) is a block
cipher developed by Dr. Xuejia Lai and Prof. Dr. J. L. Massey at the Swiss Federal Institute of Technology.
The implementation used here was written by Richard De Moliner.
Warning:
The IDEA(tm) block cipher is covered by a patent held
by ETH and a Swiss company called Ascom-Tech AG. The
Swiss patent number is PCT/CH91/00117. International
patents are pending. IDEA(tm) is a trademark of
Ascom-Tech AG. There is no license fee required for
noncommercial use. Commercial users may obtain
licensing details from Dieter Profos, Ascom-Tech AG,
Solothurn Lab, Postfach 151, 4502 Solothurn,
Switzerland, Tel +41 65 242885, Fax +41 65 235761.
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| SAFER |
(Safe And Fast Encryption Routine) is a block cipher
developed by Prof. Dr. J. L. Massey at the Swiss Federal Institute of Technology. The development was
sponsored by Cylink, Sunnyvale, CA, USA. From the file
generic/safer/SAFERCMD.TXT:
Although our design of SAFER K-64 was sponsored by
Cylink Corporation (Sunnyvale, CA, USA), Cylink
has explicitly relinquished any proprietary rights to
this algorithm. This largesse on the part of Cylink
was motivated by the reasoning that the company would
gain more from new business than it would lose from
competition should many new users adopt this publicly
available cipher. SAFER K-64 has not been
patented and, to the best of our knowledge, is free
for use by anyone without fees of any kind and with no
violation of any rights of ownership, intellectual or
otherwise.
The implementation used here was written by Richard De Moliner.
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| Blowfish |
is a block cipher invented by Bruce Schneier, it is
decribed in the 2nd edition of his book ``Applied
Cryptography''. His sources were used, with small
modifications to interface it with this package.
The statement of the author about the legal state of the
algorithm:
Blowfish is unpatented, and will remain so in all
countries. The algorithm is hereby placed in the
public domain, and can be freely used by anyone.
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| RC4 |
was invented by RSA Data Security, Inc and considered a ``Trade
Secret''. Somewhere in this big world it was reengineered and
the result made public, rendering the secret useless.
I don't know that RSA Data Security, Inc will try to inflict on people using
it in the USA. Use it at your own risk.
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