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Re: [openpgp] SHA3 algorithm ids.

Werner Koch <wk@gnupg.org> Tue, 11 August 2015 16:10 UTC

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From: Werner Koch <wk@gnupg.org>
To: ianG <iang@iang.org>
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Subject: Re: [openpgp] SHA3 algorithm ids.
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On Tue, 11 Aug 2015 14:29, iang@iang.org said:

>   * to choose which SHA3 we're going for.  This not only means
> addressing the additionals (like the 4 lengths) but also resolving the
> uncertainty (perhaps in my mind only) about SHAKES.

I don't think so.  Let's assume that 4880bis specifies SHA-256 as the
replacement for SHA throughout the protocol.  Then it would be pretty
clear that SHA3-256 can be used if surprisingly a Chinese researcher
finds weaknesses in SHA2.

>   * to build a more comprehensive alg-failure recovery strategy.  By
> this I mean, more than handwaving at SHA3 as a potential drop in;
> making it the actual drop in with a process by which we trigger that

We already have this.  The preference systems greatly helped with the
migration from SHA-1 to SHA-256 et al.


Salam-Shalom,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.

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