Re: [Cfrg] PAKE selection process: status after Phase 1 and following steps

Peter Gutmann <pgut001@cs.auckland.ac.nz> Wed, 17 July 2019 07:37 UTC

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From: Peter Gutmann <pgut001@cs.auckland.ac.nz>
To: Dan Harkins <dharkins@lounge.org>, "cfrg@irtf.org" <cfrg@irtf.org>
Thread-Topic: [Cfrg] PAKE selection process: status after Phase 1 and following steps
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Date: Wed, 17 Jul 2019 07:37:46 +0000
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Subject: Re: [Cfrg] PAKE selection process: status after Phase 1 and following steps
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Dan Harkins <dharkins@lounge.org>; writes:


>SPEKE was patented with U.S. Patent 6,226,383. That patent expired in March
>2007. There are no other patents that are known to apply to SPEKE.

Didn't all of { Bellovin and Merritt, Jablon, Wu } apply, so you couldn't
safely use any of them until all three had expired?  Granted, all of them have
expired now, but historically that's always been a PITA with using the *EKE's,
three patent holders all considered they had the sole patent on the
technology, and like monotheistic religions going with one implicitly
condemned you to the other two's version of hell.  In fact the *EKE patent
mess was often cited as (yet another) example of the patent system's
brokenness...

Peter.