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Re: [saag] sntrup761x25519-sha512

Simon Josefsson <simon@josefsson.org> Tue, 23 May 2023 22:36 UTC

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From: Simon Josefsson <simon@josefsson.org>
To: Martin Thomson <mt@lowentropy.net>
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Date: Wed, 24 May 2023 00:36:42 +0200
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Subject: Re: [saag] sntrup761x25519-sha512
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"Martin Thomson" <mt@lowentropy.net> writes:

> On Tue, May 23, 2023, at 15:35, Simon Josefsson wrote:
>> In the same way that if the IETF decided to change the details of a
>> deployed protocol, then the implementor community would change over to
>> that code point, yes.
>
> So if the IETF decided that Kyber was preferred to SNTRU (as Panos
> suggested), that goes too, right?  That's a pretty significant change,
> but a good test of whether this is IETF vs. independent for me.

I may be missing your actual point, and I don't speak for anyone but
myself, but I believe that the SSH community is interested in
standardizing, implementing and deploying a KEX based on Kyber in
collaboration with the IETF community, and further believe that this
does not take away the desire or usefulness for the IETF to publish a
document that describes sntrup761x25519-sha512.  Those are orthogonal
issues.  The latter is a widely deployed SSH KEX and will continue to be
widely used for many years to come, even if Kyber would be implemented
as well.

> I think that you said that you wouldn't be interested in that outcome,
> which is why I suggested that independent submissions would be better.

As far as I understand, the independent submission route is not possible
due to the IANA registration policy for the SSH KEX registry.

/Simon

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