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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:10:56
Bruce Schneier (schneier@counterpane.com)
Fri, 07 Aug 1998 08:38:52 -0500
At 12:31 PM 8/7/98 +0300, Berke Durak wrote:
>Hello,
>
>I was considering using RC6 as a strong PRNG, however I was told that
>RC6 is patented by RSADSI and that this might cause problems in the
>future. Since RC6 is actually an AES submission, and since AES requires
>the candidate algorithms to be licence-free (or am I wrong?) I thought
>it would be ok to use it. Any info ?
There is a patent which RSADSI claims to cover RC6. If RC6 is accepted
as AES, RSADSI has agreed to give up some patent rights to RC6. Until
RC6 is accepted, RSADSI can do what they want. If RC6 is not accepted,
RSADSI can do what they want.
>PS.I was advised to use RC4 instead.
RSADSI has intellectual property claims on RC4, too, but I don't believe they
are valid
You should consider absolutely free alternatives: triple-DES, Blowfish,
Twofish.
Bruce
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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:10:56