Re: [Cfrg] Hardware requirements for elliptic curves

Watson Ladd <watsonbladd@gmail.com> Fri, 12 September 2014 01:56 UTC

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Date: Thu, 11 Sep 2014 18:56:54 -0700
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From: Watson Ladd <watsonbladd@gmail.com>
To: Torsten Schuetze <torsten.schuetze@gmx.net>
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Subject: Re: [Cfrg] Hardware requirements for elliptic curves
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So I don't understand why you are asking for something that the
brainpool curves don't already give you. We are not removing curves
from TLS, and we already knew that FIPS users were likely to not adopt
the new curves, so nonsupport isn't an issue. Even if we had only the
NIST curves, and did nothing, you would be in the same position. There
is an enormous performance benefit in software for special primes, and
the sort of side channel attacks that require special blinding don't
matter on servers, even if the curve is implemented on hardware.

I think it's clear that the desired properties are different enough
that there is no way to satisfy everyone.

Sincerely,
Watson Ladd