[Cfrg] Conclusions: poll about curve around 256bit work factor

Alexey Melnikov <alexey.melnikov@isode.com> Mon, 23 February 2015 20:52 UTC

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From: Alexey Melnikov <alexey.melnikov@isode.com>
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Date: Mon, 23 Feb 2015 20:58:54 +0000
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Subject: [Cfrg] Conclusions: poll about curve around 256bit work factor
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From responses and discussions on the mailing list it is clear that there is rough consensus against using curve 512-C. However, part of the responders said that they prefer 521 (the original Q3 asked), while other responded to extended list suggested by Phillip.

Based on answers chairs declare CFRG consensus against the curve 512 being in the CFRG recommendation at the 256 WF level. Other curves (521, 448, etc) still remain as contenders for the CFRG recommendation.

Chairs will return to the question of a specific curve recommendation above 128 level at a later date.