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Re: [Cfrg] Elliptic Curves - poll on security levels (ends on February 17th)

Aaron Zauner <azet@azet.org> Tue, 10 February 2015 15:06 UTC

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Date: Tue, 10 Feb 2015 16:06:15 +0100
From: Aaron Zauner <azet@azet.org>
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Subject: Re: [Cfrg] Elliptic Curves - poll on security levels (ends on February 17th)
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Alexey Melnikov wrote:
> CFRG chairs are starting a poll, containing 2 initial questions:
> 
> Q1: Should CFRG recommend a curve at the 192-bit security level?

No (see below).

> 
> Q2: Should CFRG recommend a curve at the 256-bit security level?

Yes.


The reason for the first no being: more is not always better. Just look
at the list of possible tunables w.r.t. TLS ciphersuites. 128bit, 256bit
and one or two "high-security" curves would be preferable to as many
options as possible. But that's strictly my personal opinion.

Aaron

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