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Re: [Cfrg] Requirements for curve candidate evaluation update

Phillip Hallam-Baker <phill@hallambaker.com> Thu, 14 August 2014 02:42 UTC

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Date: Wed, 13 Aug 2014 22:42:43 -0400
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From: Phillip Hallam-Baker <phill@hallambaker.com>
To: "Salz, Rich" <rsalz@akamai.com>
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Subject: Re: [Cfrg] Requirements for curve candidate evaluation update
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+1

To be clear, I am arguing that we put HSM support way ahead of a
single model. HSM support is essential, a single model is someone's
idea of tidiness.

You might think you are going to share the sign and decrypt code but I
bet you won't.


On Wed, Aug 13, 2014 at 10:34 PM, Salz, Rich <rsalz@akamai.com> wrote:
>> Requiring a single model for everything significantly reduces opportunities for mistakes and the small performance gain of multiple models does not justify requiring the additional exposure.
>
> That's a value judgement, and different people will come to different conclusions. It's certainly not an axiomatic principle. And when I see it put forth like that, I instantly get suspicious of the people doing that.  FWIW.
>
> To me, it's trading off "this is hard, and some people will get it wrong" -- when the community of people doing it is maybe a few hundred, certainly under 1K -- compared to zillions of devices in the web of things for the next couple of decades.
>
>         /r$
>
> --
> Principal Security Engineer
> Akamai Technologies, Cambridge MA
> IM: rsalz@jabber.me Twitter: RichSalz
>
>
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