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Cose Status Pages

CBOR Object Signing and Encryption (Concluded WG)
Sec Area: Roman Danyliw, Benjamin Kaduk | 2015-Jun-03 — 2016-Nov-29 

IETF-112 cose minutes


minutes-112-cose-00 minutes

          COSE IETF 112
          ## Connection details
          * Date: November 10, 2021
          * Meeting link:
          * Slides link:
          # Action Items
            * See below
          # Minutes
          ## 1. Administrivia (Chairs)
          ## 2. Document Status (Chairs) - 5 min
          IP: Hash algs draft have some questions from the RFC editor.
          IP: 8152-bis-algs in AUTH 48.
          GS: https://github.com/cose-wg/cose-rfc8152bis/pull/34
          MJ: We should not make this change, since this is becoming a proposed
          CB: We have learnt something in the process from internet standard to
          proposed standard
          MJ: Not worth making the change.
          JPM: As much breaking change as algorithm. Has been discussed extensibly
          in the mailing list.
          MJ: Difference compared to alg, no expectation for changed basic data
          BK: Agree with CB that there is something learned in the process. Would
          require another WGLC and a LC. Also an option to have a separate proposed
          standard updating the Internet standard.
          RM: I can remember changes made when going from proposed or Internet
          standard. Used versioning to indicate.
          CB: Versioning is not needed, since CBOR allows type to be detected.
          IP: Continue discussion later, due to time constraints.
          ## 3. x509 (Chairs) - 10 min
          IP: Past IESG evaluation, MR has done the shepherding.
          IP: All involved, please take a look that github issues are resolved.
          IP: The chairs and Carsten to look at media type, suggest text.
          * CB: Will do.
          IP: John: Please have another look at the PR.
          JPM: I looked recently and looks good.
          IP: Phrasing of x5bag/chain, previously argued for protection of those.
          * IP will make an issue.
          ## 4. draft-ieft-cbor-encoded-cert (Göran Selander) - 10 min
          GS: Splitting out revocation?
          BK: May be concerns in IESG. Revocation may be referenced with normative
          RH: Not in favor, some situation as single draft
          DKG: Concerns about OCSP, well known issues, privacy issues with X.509,
          alternatives for handling with C509.
          CB: Have the CRL section would get draft through IESG. OCSP could be
          JPM: Any opinion about Mozilla CRL light?
          * IP: We will look individually for reviewers.
          ## 5. HPKE for COSE - Russ - 10 min
          RH: Based out of SUIT work on how to encrypt firmware. Useful beyond
          firmware encryption. Three layers in COSE: layer 3 for encryption with
          shared secret, layer 2 encrypted CEK, layer 1 encrypted plain text. Some
          implementation experience. Also, recent discussion on the mailing list.
          JPM: Should COSE work on HPKE and non-HPKE KEMs?
          RH: Same question in LAMPS. What is the cleanest way for PQ-KEMs. Using
          KEM recipient info.
          * IP: Chairs to issue call-for-adoption
          ## 6. Fast-verification friendly ECDSA (Rene Struik) - 10 min
          RS: Introducing ECDSA*, fast batch verifications. Did not conclude due
          to lack of time. Those interested should reach out for Rene.
          ## 7. AOB - 10 min

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