Re: [TLS] (selection criteria for crypto primitives) Re: sect571r1

Tony Arcieri <bascule@gmail.com> Thu, 16 July 2015 02:31 UTC

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From: Tony Arcieri <bascule@gmail.com>
Date: Wed, 15 Jul 2015 19:31:12 -0700
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To: Rene Struik <rstruik.ext@gmail.com>
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Subject: Re: [TLS] (selection criteria for crypto primitives) Re: sect571r1
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To respond more specifically to your concerns:

On Wed, Jul 15, 2015 at 6:42 PM, Rene Struik <rstruik.ext@gmail.com> wrote:

> It seems prudent to keep some diversity of the gene pool and not only have
> curves defined over prime curves. Similarly, one should perhaps have some
> diversity of gene pool criteria within the set of recommend curves and not
> only include special primes. Should some problem with a particular subclass
> show up over time, one then at least has other classes available.
>

Binary curves in particular are showing warning signs of potential future
security issues:

https://eprint.iacr.org/2015/310.pdf

I think even if we don't completely pare down the TLS curve portfolio to
the list I suggested, if nothing else I would like to see binary curves
removed.

-- 
Tony Arcieri