Re: [TLS] RSA-PSS in TLS 1.3

Viktor Dukhovni <ietf-dane@dukhovni.org> Tue, 01 March 2016 04:59 UTC

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Date: Tue, 1 Mar 2016 04:59:47 +0000
From: Viktor Dukhovni <ietf-dane@dukhovni.org>
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Subject: Re: [TLS] RSA-PSS in TLS 1.3
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On Tue, Mar 01, 2016 at 03:56:53PM +1100, Martin Thomson wrote:

> It seems like others are taking the position that we should say "MUST
> NOT use PKCS#1.5".  I would love for that to be the case, but I want
> to separate decision path for that, preferably one that is somewhat
> under my control.  Once we have information about usage for each
> signature scheme, I'll be happy to arrange for another "break the web"
> day.

It is much easier to mandate PSS in TLS 1.3 now, than to remove it
later.  Servers that can't do PSS will use TLS 1.2.  This avoids
a break-the-web day.

-- 
	Viktor.