I second the request to add support for secp384r1mlkem1024, as that’s the only 
hybrid KEX that makes sense for us. 

Thank you! 
-- 
V/R, 
Uri 

There are two ways to design a system. One is to make it so simple there are 
obviously no deficiencies. 
The other is to make it so complex there are no obvious deficiencies. 
C. A. R. Hoare 

I was a shepherd to fools 
Causelessly bold or afraid. 
They would not abide by my rules. 
Yet they escaped. For I stayed. 
R. Kipling “Epitaphs of the War. Convoy Escort” 



From: Alicja Kario <hka...@redhat.com>
Date: Tuesday, October 15, 2024 at 09:33
To: Bas Westerbaan <b...@cloudflare.com>
Cc: <tls@ietf.org>, p...@ietf.org <p...@ietf.org>
Subject: [EXT] [Pqc] Re: Planned changes to Cloudflare's post-quantum 
deployment 

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On Tuesday, 15 October 2024 14:49:06 CEST, Bas Westerbaan wrote:
> On Tue, Oct 15, 2024 at 1:52 PM Alicja Kario <hka...@redhat.com> wrote:
>
>> Do you plan to add support for secp256r1mlkem768 and secp384r1mlkem1024?
>> 
>
> Not at this time. We want clients to guess correctly which PQ kex the
> server supports, and that's easier if there are fewer deployed. Hopefully
> clients will adopt
> https://datatracker.ietf.org/doc/draft-davidben-tls-key-share-prediction/ 
> <https://datatracker.ietf.org/doc/draft-davidben-tls-key-share-prediction/>

sure, but I'm thinking about clients that won't be able to use
x25519mlkem768 at all until they have a FIPS certified implementation of
ML-KEM...

-- 
Regards,
Alicja (nee Hubert) Kario
Principal Quality Engineer, RHEL Crypto team
Web: www.cz.redhat.com <http://www.cz.redhat.com>
Red Hat Czech s.r.o., Purkyňova 115, 612 00, Brno, Czech Republic

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