A new section has been added to the draft to justify the combination of
PQC-only and PQ/T hybrid KEMs with specific KDF and AEAD algorithms,
https://www.ietf.org/archive/id/draft-reddy-cose-jose-pqc-hybrid-hpke-11.html#section-7.
Please take a look and share any feedback, especially if there are concerns
regarding the justification of particular KEM/KDF/AEAD pairings.

Cheers,
-Tiru

On Thu, 12 Feb 2026 at 19:54, tirumal reddy <[email protected]> wrote:

> Hi,
>
> We have updated the draft "Post-Quantum and Hybrid KEMs for HPKE with JOSE
> and COSE"
> https://datatracker.ietf.org/doc/draft-reddy-cose-jose-pqc-hybrid-hpke/
> to version 10.  As many of you recall, this draft has been presented
> multiple times in both COSE/JOSE WGs. While there was general interest, the
> WG adoption of this draft was previously postponed to allow for the
> completion COSE-HPKE and JOSE-HPKE specifications.
>
> With those base documents now mature, we have updated this draft to ensure
> alignment with, JOSE/COSE HPKE and HPKE PQ specs.
>
> Further, comments and suggestions are welcome.
>
> we also request the Chairs to initiate a second WG adoption call for this
> draft.
>
> Best Regards,
> -Tiru
>
> -----Original Message-----
> From: [email protected] <[email protected]>
> Sent: Wednesday, February 11, 2026 6:04 PM
> To: K Tirumaleswar Reddy (Nokia) <[email protected]>; Hannes
> Tschofenig <[email protected]>; Hannes Tschofenig <
> [email protected]>; K Tirumaleswar Reddy (Nokia) <
> [email protected]>
> Subject: New Version Notification for
> draft-reddy-cose-jose-pqc-hybrid-hpke-10.txt
>
>
> CAUTION: This is an external email. Please be very careful when clicking
> links or opening attachments. See the URL nok.it/ext for additional
> information.
>
>
>
> A new version of Internet-Draft
> draft-reddy-cose-jose-pqc-hybrid-hpke-10.txt
> has been successfully submitted by Tirumaleswar Reddy and posted to the
> IETF repository.
>
> Name:     draft-reddy-cose-jose-pqc-hybrid-hpke
> Revision: 10
> Title:    Post-Quantum and Hybrid KEMs for HPKE with JOSE and COSE
> Date:     2026-02-11
> Group:    Individual Submission
> Pages:    21
> URL:
> https://www.ietf.org/archive/id/draft-reddy-cose-jose-pqc-hybrid-hpke-10.txt
> Status:
> https://datatracker.ietf.org/doc/draft-reddy-cose-jose-pqc-hybrid-hpke/
> HTML:
> https://www.ietf.org/archive/id/draft-reddy-cose-jose-pqc-hybrid-hpke-10.html
> HTMLized:
> https://datatracker.ietf.org/doc/html/draft-reddy-cose-jose-pqc-hybrid-hpke
> Diff:
> https://author-tools.ietf.org/iddiff?url2=draft-reddy-cose-jose-pqc-hybrid-hpke-10
>
> Abstract:
>
>    This document specifies the use of Post-Quantum (PQ) and Post-
>    Quantum/Traditional (PQ/T) Hybrid Key Encapsulation Mechanisms (KEMs)
>    within the Hybrid Public Key Encryption (HPKE) for JOSE and COSE.  It
>    defines algorithm identifiers and key formats to support pure post-
>    quantum algorithms (ML-KEM) and their PQ/T hybrid combinations.
>
>
>
> The IETF Secretariat
>
>
>
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