Re: fwd: Re: RC5/6 patents

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Perry E. Metzger (perry@piermont.com)
Thu, 23 Jul 1998 00:01:30 -0400


Keith Lockstone writes:
> In-Reply-To: <35B3F3DC.FE7FA4A3@cs.umass.edu>
> > It is important that we save statements like this to submit to
> > NIST. A patent-free algorithm is important in the AES
> > selection process, and if RSADSI reserves the right to
> > patent non-FIPS modes of their AES submission, than this
> > is something to make public in the selection process.
>
> It's ironical that a technique used in the key processing of RC6
> (adding a scaled version of the Golden Number into an accumulator
> to assist avalanche etc) first came to my notice in the TEA cipher.
> It's also used in LOKI97 - but they acknowledge the source, whereas
> Rivest does not.

RC5 did the same thing, and in fact RC2, which way predates TEA, LOKI,
etc., did the same thing. If Rivest is copying someone else, it was
Pretty Damn Early, and certainly wasn't any of the people you mention.

Perry


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The following archive was created by hippie-mail 7.98617-22 on Fri Aug 21 1998 - 17:20:50 ADT