[Openid-dcp] DCP WG APAC 30th October 2025 Meeting Notes

[Stefan Charsley]

DCP WG APAC 30th October 2025
Attendees

Lenah Chacha

Ajay Jadhav

Martijn Haring

Kenichi Nakamura

Philip Halsall

Hiroyuki Sano

Andres Olave

Joseph Heenan

Stefan Charsley

Updates

Remote interop, if you want to take part please let Gail know
https://lists.openid.net/pipermail/openid-specs-digital-credentials-protocols/Week-of-Mon-20251027/000985.html

HAIP 1.0 conformance tests will be ready soon

HAIP currently under public review, vote happening over email
https://lists.openid.net/pipermail/openid-specs-digital-credentials-protocols/Week-of-Mon-20251027/000991.html

Discussing desired features to prioritize

'pure' HPKE container approach using new response_mode #676
<https://github.com/openid/OpenID4VP/issues/676>


   -

   Kenichi: how do you specify you want hpke?
   -

   Joseph: you change the response_mode parameter
   -

   Kenichi: this does not JWE JSON serialization, correct?
   -

   Joseph: thats correct
   -

   Joseph: this needs quite a bit more discussion, especially how we do the
   hpke info parameter. Any thoughts anybody has, please add to the ticket


First Class Server-to-Server support in VCI (requirements) #663
<https://github.com/openid/OpenID4VCI/issues/663>


   -

   Stefan: acronyms in diagram should be explained somewhere


General discussion

   -

   Martijn: server to server should have its own sessions, even if they
   aren’t working group sessions



   -

   Joseph: cadence of WG work should slow down a bit, need to have a
   discussion on reducing the number of weekly WG meetings



   -

   Stefan: what will be the release cadence for new versions of the specs?
   6 monthly cadence?
   -

   Joseph: that will need to be discussed, likely whenever a group of PRs
   are merged that has been decided will be a new version. Not likely to fix
   to a 6 month monthly, instead will be when ready.


HAIP

Add references to Ecosystem Implementation Guidelines section #312
<https://github.com/openid/OpenID4VC-HAIP/pull/312>


   -

   Philip: Is this about san_dns or hash? Is the suggestion that the HAIP
   profile uses x509_hash, but non-HAIP its okay to do x509_san_dns?
   -

   Joseph: HAIP is restricted to just x509_hash, VP has multiple options


either define or remove the term "ecosystem(s)" #318
<https://github.com/openid/OpenID4VC-HAIP/issues/318>


   -

   Martijn: i’m still surprised things like regulation, law, or internal
   governance is included. It implies government is supposed to profile HAIP
   rather than specs.
   -

   Joseph: the intent isn’t that this stuff is supposed to be defined in
   law. Internal governance was supposed to capture non-government things like
   mDL ecosystems.
   -

   Martijn: i don’t really like the term ecosystem. I like to keep it
   undefined. I am struggling to come up with a better definition.
   -

   Joseph: we don’t explicitly say we are treating it as an undefined term
   currently
   -

   Martijn: I think this is a big change rather than just editorial. I
   think we should clarify the term, but we need to do it properly. I’ll try
   to think of something
   -

   Joseph: possible outcome is that we decide to keep it undefined because
   it’s too hard, we’ll have to see where the working group ends up


VCI

add credential format specific sections for IAR endpoint binding in VPs #602
<https://github.com/openid/OpenID4VCI/pull/602>


   -

   Needs more reviews please
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