[CFRG] Re: RG Last Call on draft-irtf-cfrg-hybrid-kems-12 and draft-irtf-cfrg-concrete-hybrid-kems-04

[Russ Housley <[e-mail]>]

I do not think the IANA registry is needed.  At this point, there seems to
be a lot of acceptance of draft-ietf-lamps-pq-composite-kem.  Thus, It
seems unlikely that more combinations will be specified that require new
labels to be registered.  Perhaps a registry can be set up in the future
when new labels are actually needed.

Russ

> On Jul 8, 2026, at 6:24 AM, Nick Sullivan <[e-mail]> wrote:
> 
> Dear CFRG,
> 
> This message starts a two-week RG Last Call on two related documents. The last
> call ends on Wednesday July 22, 2026:
> 
>   Hybrid PQ/T Key Encapsulation Mechanisms (generic constructions)
>   draft-irtf-cfrg-hybrid-kems-12
>   https://www.ietf.org/archive/id/draft-irtf-cfrg-hybrid-kems-12.html
> 
>   Concrete Hybrid PQ/T Key Encapsulation Mechanisms
>   draft-irtf-cfrg-concrete-hybrid-kems-04
>   https://www.ietf.org/archive/id/draft-irtf-cfrg-concrete-hybrid-kems-04.html
> 
> Both are intended as Informational RFCs. Please reply on-list with your position
> on each document: ready to publish as-is, ready with specific changes, or not
> ready, together with the technical reasons. This feedback will help the chairs
> judge whether the documents are ready for IRSG review and publication.
> 
> The scope and approach of this work were settled when the group adopted it well
> over a year ago, and both drafts have developed on the list in the open since
> then. This last call is about whether the text is technically correct and
> complete, so please ground any objection in a specific problem with the
> documents. Detailed comments are best filed as issues on the repositories
> (https://github.com/cfrg/draft-irtf-cfrg-hybrid-kems,
> https://github.com/cfrg/draft-irtf-cfrg-concrete-hybrid-kems) positions belong
> here on the list.
> 
> Both documents were reviewed by the CFRG Crypto Review Panel ahead of this last
> call. The reviews are on the CFRG and crypto-panel lists:
> 
>   Thomas Pornin (NCC Group), 3 June 2026, reviewed the generic framework with a
>   focus on the constructions and reductions, and concluded that it describes a
>   secure construction, with editorial and technical comments now reflected in -12.
> 
>   Virendra Kumar (Qualcomm), 8 June 2026, reviewed the generic framework for
>   clarity, with notational comments now reflected in -12.
> 
>   Russ Housley (Vigil Security), 2 June 2026, reviewed both drafts and found the
>   constructions and instantiations as specified.
> 
> The current revisions incorporate changes proposed by the panel's comments.
> 
> Thank you,
> Nick, for the CFRG chairs
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