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Re: [Cfrg] EC - next steps to get draft-irtf-cfrg-curves done

Tony Arcieri <bascule@gmail.com> Tue, 10 February 2015 22:14 UTC

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From: Tony Arcieri <bascule@gmail.com>
Date: Tue, 10 Feb 2015 14:14:03 -0800
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To: Andrey Jivsov <crypto@brainhub.org>
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Subject: Re: [Cfrg] EC - next steps to get draft-irtf-cfrg-curves done
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On Tue, Feb 10, 2015 at 2:07 PM, Andrey Jivsov <crypto@brainhub.org> wrote:

> The above reads a bit odd. Often the hash function cannot be perfectly
> matches to the curve size, thus the expansion or contraction rules are
> defined and relied upon.
>
> e.g. one can use SHA-256 with P-384.


Can you show me an ECDSA specification that says it's allowed to use
SHA-256 with P-384?

-- 
Tony Arcieri

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