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<p class="MsoNormal">SIOP Special Call Notes 10-Feb-22<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mike Jones<o:p></o:p></p>
<p class="MsoNormal">Kristina Yasuda<o:p></o:p></p>
<p class="MsoNormal">Torsten Lodderstedt<o:p></o:p></p>
<p class="MsoNormal">Joseph Heenan<o:p></o:p></p>
<p class="MsoNormal">Petteri Stenius<o:p></o:p></p>
<p class="MsoNormal">Bjorn Hjelm<o:p></o:p></p>
<p class="MsoNormal">David Chadwick<o:p></o:p></p>
<p class="MsoNormal">Brian Campbell<o:p></o:p></p>
<p class="MsoNormal">Kenichi Nakamura<o:p></o:p></p>
<p class="MsoNormal">Daniel Fett<o:p></o:p></p>
<p class="MsoNormal">Jo Vercammen<o:p></o:p></p>
<p class="MsoNormal">David Waite<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Approved Implementer's Drafts<o:p></o:p></p>
<p class="MsoNormal"> The two approved SIOP-related Implementer's Drafts are:<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://openid.net/specs/openid-connect-self-issued-v2-1_0-ID1.html">
https://openid.net/specs/openid-connect-self-issued-v2-1_0-ID1.html</a><o:p></o:p></p>
<p class="MsoNormal"> <a href="https://openid.net/specs/openid-connect-4-verifiable-presentations-1_0-ID1.html">
https://openid.net/specs/openid-connect-4-verifiable-presentations-1_0-ID1.html</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Open Pull Requests<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://bitbucket.org/openid/connect/pull-requests/">
https://bitbucket.org/openid/connect/pull-requests/</a><o:p></o:p></p>
<p class="MsoNormal"> PR #120: Issuer Handling SIOP<o:p></o:p></p>
<p class="MsoNormal"> This was also discussed on the preceding Connect call<o:p></o:p></p>
<p class="MsoNormal"> Vittorio had asked on a previous call why use cases where "sub" and "iss" are different aren't interesting<o:p></o:p></p>
<p class="MsoNormal"> Torsten is interest in having an attestation about the software producing the ID Token<o:p></o:p></p>
<p class="MsoNormal"> This would be different issue<o:p></o:p></p>
<p class="MsoNormal"> The IETF RATS and EAT working groups are doing attestation-related work<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that having "iss" == "sub" would enable an ID Token to be a Verifiable Presentation<o:p></o:p></p>
<p class="MsoNormal"> George said that in the third-party case, the "iss" is used to validate the metadata and keys of the issuer<o:p></o:p></p>
<p class="MsoNormal"> George said that we should have a non-normative note clarifying the motivations<o:p></o:p></p>
<p class="MsoNormal"> Mike observed that if "iss" doesn't point to .well-known/openid-configuration, we lose the ability to retrieve metadata from the issuer<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that in SIOP v1, we already couldn't do this<o:p></o:p></p>
<p class="MsoNormal"> Mike agreed to file a comment on issue #1400 about this<o:p></o:p></p>
<p class="MsoNormal"> PR #101: Fetching presentation definitions from a remote repository<o:p></o:p></p>
<p class="MsoNormal"> Torsten filed a comment on the organization of the PR<o:p></o:p></p>
<p class="MsoNormal"> David agreed to reorder the text as suggested by Torsten<o:p></o:p></p>
<p class="MsoNormal"> Torsten also filed a comment on the metadata values<o:p></o:p></p>
<p class="MsoNormal"> David disagreed with him<o:p></o:p></p>
<p class="MsoNormal"> We agreed that request by value should be the default<o:p></o:p></p>
<p class="MsoNormal"> People are requested to comment in the PR on the metadata syntax<o:p></o:p></p>
<p class="MsoNormal"> PR #124: [oidc4vci] clarify sub value in the ID Token Issue #1426<o:p></o:p></p>
<p class="MsoNormal"> We discussed this with issue #1426, as recorded below<o:p></o:p></p>
<p class="MsoNormal"> PR #107: Support for federations using the termsOfUse property<o:p></o:p></p>
<p class="MsoNormal"> David asked about using "anyof"<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that there are numerous issues with parsing and the specification of it<o:p></o:p></p>
<p class="MsoNormal"> Kristina said that PE v2 is still being actively worked on<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that PE doesn't mention "anyof"<o:p></o:p></p>
<p class="MsoNormal"> Torsten suggested simplifying the example to have a single value<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that PE doesn't support what David wants and that would have to be addressed in the PE spec<o:p></o:p></p>
<p class="MsoNormal"> Kristina asked for David to provide an assessment of how stable PE v2 is<o:p></o:p></p>
<p class="MsoNormal"> David agreed that v1 is more stable<o:p></o:p></p>
<p class="MsoNormal"> He said that v2 will be vastly superior, as it defines an MTI core and optional features<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that v2 format functionality is better and needed<o:p></o:p></p>
<p class="MsoNormal"> Torsten doesn't want to have to define an OpenID profile of PE v1<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Open Issues<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://bitbucket.org/openid/connect/issues?status=new&status=open">
https://bitbucket.org/openid/connect/issues?status=new&status=open</a><o:p></o:p></p>
<p class="MsoNormal"> #1426: Clarification of "sub" value<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that everything about "sub" in OpenID Connect Core still applies<o:p></o:p></p>
<p class="MsoNormal"> George is worried about ephemeral identifiers<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that this the "sub" in the issuance draft - not the "sub" in the SIOP ID Token<o:p></o:p></p>
<p class="MsoNormal"> Implementers want to know what to put in the "sub" value<o:p></o:p></p>
<p class="MsoNormal"> Daniel said that whatever is in the "sub" should be about the End-User<o:p></o:p></p>
<p class="MsoNormal"> Kristina suggested clarifying that everything about the Connect ID Token applies<o:p></o:p></p>
<p class="MsoNormal"> She also said that there may be cases in which an ID Token isn't needed<o:p></o:p></p>
<p class="MsoNormal"> Daniel said that the ID Token is needed to contain the "nonce" in the reply<o:p></o:p></p>
<p class="MsoNormal"> Torsten said that the alternative is to turn this into a pure OAuth flow<o:p></o:p></p>
<p class="MsoNormal"> Kristina will update the PR<o:p></o:p></p>
<p class="MsoNormal"> She will file a separate issue about whether to turn this into a pure OAuth flow<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> #1429: Replace JWK Thumbprint URI with JWK URI<o:p></o:p></p>
<p class="MsoNormal"> David prefers to send the entire key as a URI<o:p></o:p></p>
<p class="MsoNormal"> He said that RPs that want a stable identifier could create one by applying the JWK Thumbprint rules<o:p></o:p></p>
<p class="MsoNormal"> Mike said that having the "sub" be a stable identifier of limited size is important<o:p></o:p></p>
<p class="MsoNormal"> Mike said that having RPs compute the stable identifier from the "sub" would be an unnecessary departure from Connect Core semantics<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Next Call<o:p></o:p></p>
<p class="MsoNormal"> The next Connect call will be on Monday, February 14, 2022 at 3pm Pacific Time<o:p></o:p></p>
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