Responses inline: On Thu, Sep 22, 2022 at 8:01 AM Richard Barnes <[email protected]> wrote:
> On the specific question of encoding the encapsulated keys -- It would be > a mistake to encode these as keys. The HPKE spec deliberately treats these > as opaque byte strings to preserve agility with regard to the KEM. > So no registry updates needed? > In DHKEM, the encapsulated value is a serialized public key, but that is > not true more generally. > Registry updates would be needed to support new suites (kyber, etc) > > --RLB > > On Thu, Sep 22, 2022 at 8:34 AM AJITOMI Daisuke <[email protected]> wrote: > >> Hi folks, >> >> I've heard that the JOSE WG is considered to be restarted. >> >> Currently, during some discussions on "Use of HPKE with COSE''[1] in the >> COSE WG, the topic of how to represent HPKE public keys has been >> raised[2][3]. Specifically, it concerns whether encapsulated keys >> (ephemeral **sender** public keys) for HPKE should be represented by >> COSE_Key (binary version of JWK) or not and I am of the opinion that it is >> not necessary to express them in COSE_Key. >> >> On the other hand, however, I'm thinking it would be better to have a >> standardized way and format for publishing **recipient** public keys for >> HPKE. In particular, I believe that if we can express them in very popular >> JWK format and publish them via developer-friendly jwks_uri endpoints the >> use of HPKE on the application layer will be facilitated. >> >> Would this topic be inside the scope of the new JOSE WG planned to be >> re-chartered? >> >> I would like to hear from the experts on this mailing list. >> >> Best regards, >> Ajitomi, Daisuke >> >> [1] https://www.ietf.org/archive/id/draft-ietf-cose-hpke-02.html >> [2] >> https://mailarchive.ietf.org/arch/msg/cose/kI10B-xaIUFTeN2lZNXKsgYBMSs >> [3] >> https://mailarchive.ietf.org/arch/msg/cose/Rg_AAtgOL4p9SdlXHyL8-0HSrI8 >> _______________________________________________ >> jose mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/jose >> > _______________________________________________ > jose mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/jose > -- *ORIE STEELE* Chief Technical Officer www.transmute.industries <https://www.transmute.industries>
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