Hey Brian,

I drafted a reply to you but failed to send it.
I'm supportive of the perspective to pare down algorithms, but I would want
to hear from the WG on which ones should be removed.

Regards,

OS (just one author, without discussing with the others)


On Wed, Jul 1, 2026 at 1:05 PM Brian Campbell <[email protected]>
wrote:

> The last call comments below, which I belive to be substantive and
> reasonable, were sent well within the last call period for draft-ietf-jose-
> hpke-encrypt.
>
> No justification or rationale for including the algorithms was received
> from the authors or WG. No response or even acknowledgement was received
> from the authors.
>
> Yet it appears the document has moved to IESG evaluation.
>
> I'm not even sure what to say at this point but will try to
> be constructive and ask: was there an oversight here?
>
>
>
>
>
>
> On Mon, May 18, 2026 at 6:43 AM Brian Campbell <[email protected]>
> wrote:
>
>> In discussions at (and around) IETF 125 regarding the prospective JOSE
>> HPKE PQ & PQ/T work, a very clear preference emerged among a rough
>> consensus of the WG, its chairs, and its responsible AD for being
>> thoughtful and intentional about the algorithm choices. This document,
>> however, runs somewhat contrary to that ethos and includes a few rather
>> questionable algorithms. Specifically, because JOSE does not
>> have ChaCha20Poly1305 content encryption, the ChaCha20Poly1305 Key
>> Encryption variants in this document are rather disjoint and
>> borderline nonsensical. Why would one need to do HPKE with ChaCha20Poly1305
>> to encrypt a key that will be used for AES content encryption? If we as the
>> standards creators don't have a compelling answer, we shouldn't burden
>> implementers and the JOSE ecosystem with more unnecessary options. As such,
>> I strongly suggest that HPKE-4-KE and HPKE-6-KE be removed from this draft.
>> Honestly, I'd like to see the algorithm set pared down further but I can
>> envision reasonable arguments for and against the others in the document,
>> so I realize that doing so wouldn't be straightforward at all. However, I
>> cannot see any justification for having HPKE-4-KE and HPKE-6-KE so removing
>> those two seems like an easy win.
>>
>>
>>
>> On Wed, May 13, 2026 at 2:23 PM The IESG <[email protected]> wrote:
>>
>>>
>>> The IESG has received a request from the Javascript Object Signing and
>>> Encryption WG (jose) to consider the following document: - 'Use of Hybrid
>>> Public Key Encryption (HPKE) with JSON Web Encryption
>>>    (JWE)'
>>>   <draft-ietf-jose-hpke-encrypt-17.txt> as Proposed Standard
>>>
>>> The IESG plans to make a decision in the next few weeks, and solicits
>>> final
>>> comments on this action. Please send substantive comments to the
>>> [email protected] mailing lists by 2026-05-27. Exceptionally, comments
>>> may
>>> be sent to [email protected] instead. In either case, please retain the
>>> beginning
>>> of the Subject line to allow automated sorting.
>>>
>>> Abstract
>>>
>>>
>>>    This specification defines how to use Hybrid Public Key Encryption
>>>    (HPKE) with JSON Web Encryption (JWE).  HPKE enables public key
>>>    encryption of arbitrary-sized plaintexts to a recipient's public key,
>>>    and provides security against adaptive chosen ciphertext attacks.
>>>    This specification chooses a specific subset of the HPKE features to
>>>    use with JWE.
>>>
>>>    This specification updates RFC 7516 (JWE) to enable use of Integrated
>>>    Encryption as a Key Management Mode.
>>>
>>>
>>>
>>>
>>> The file can be obtained via
>>> https://datatracker.ietf.org/doc/draft-ietf-jose-hpke-encrypt/
>>>
>>>
>>>
>>> No IPR declarations have been submitted directly on this I-D.
>>>
>>>
>>> The document contains these normative downward references.
>>> See RFC 3967 for additional information:
>>>     rfc8937: Randomness Improvements for Security Protocols
>>> (Informational - Internet Research Task Force (IRTF) stream)
>>>
>>>
>>>
>>>
>>> _______________________________________________
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>>> To unsubscribe send an email to [email protected]
>>>
>>
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