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<p class="MsoNormal">DCP/SIOP Call Notes 28-Sep-23<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Kristina Yasuda<o:p></o:p></p>
<p class="MsoNormal">Mike Jones<o:p></o:p></p>
<p class="MsoNormal">Brian Campbell<o:p></o:p></p>
<p class="MsoNormal">Pedro Felix<o:p></o:p></p>
<p class="MsoNormal">Yaron Zehavi<o:p></o:p></p>
<p class="MsoNormal">Paul Templeman<o:p></o:p></p>
<p class="MsoNormal">Giuseppe De Marco<o:p></o:p></p>
<p class="MsoNormal">Sven Stucki<o:p></o:p></p>
<p class="MsoNormal">David Chadwick<o:p></o:p></p>
<p class="MsoNormal">Jacob Ideskog<o:p></o:p></p>
<p class="MsoNormal">Mark Dobrinic<o:p></o:p></p>
<p class="MsoNormal">Judith Kahrer<o:p></o:p></p>
<p class="MsoNormal">Dimitri Tsiflitzis<o:p></o:p></p>
<p class="MsoNormal">David Waite (DW)<o:p></o:p></p>
<p class="MsoNormal">Andres Uribe<o:p></o:p></p>
<p class="MsoNormal">Bjorn Hjelm<o:p></o:p></p>
<p class="MsoNormal">Vikas Singla<o:p></o:p></p>
<p class="MsoNormal">Idakto StéphaneCauchie<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Introductions<o:p></o:p></p>
<p class="MsoNormal"> Dimitri Tsiflitzis - In Thessaloniki, Greece<o:p></o:p></p>
<p class="MsoNormal"> Sven Stucki - In Switzerland<o:p></o:p></p>
<p class="MsoNormal"> Paul Templeman - in Australia<o:p></o:p></p>
<p class="MsoNormal"> Yaron Zehavi - In Vienna<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We talked about the DCP meeting to occur the Monday morning before IIW<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://www.eventbrite.com/e/oidf-digital-credentials-protocol-working-group-meeting-at-cisco-tickets-708486982637?aff=oddtdtcreator">
https://www.eventbrite.com/e/oidf-digital-credentials-protocol-working-group-meeting-at-cisco-tickets-708486982637?aff=oddtdtcreator</a><o:p></o:p></p>
<p class="MsoNormal"> Register by Monday, October 2<o:p></o:p></p>
<p class="MsoNormal"> There's an Open Wallet Foundation (OWF) meeting at the same time<o:p></o:p></p>
<p class="MsoNormal"> We are exploring having a joint session<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">There's a new library supporting OpenID4VP<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://github.com/TalaoDAO/AltMe">https://github.com/TalaoDAO/AltMe</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The VP over BLE spec is now in GitHub<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://github.com/openid/openid4vp_ble">
https://github.com/openid/openid4vp_ble</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Pull Requests<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://github.com/openid/OpenID4VCI/pull/65">
https://github.com/openid/OpenID4VCI/pull/65</a> - add identifiers for issuing credential of the same type, different content<o:p></o:p></p>
<p class="MsoNormal"> People are asking for identifiers to be described better<o:p></o:p></p>
<p class="MsoNormal"> Judith asked for a separate issue to be opened<o:p></o:p></p>
<p class="MsoNormal"> Pedro supported using identifiers<o:p></o:p></p>
<p class="MsoNormal"> Kristina asked how wallets would receive the identifiers<o:p></o:p></p>
<p class="MsoNormal"> We are trying to avoid breaking changes<o:p></o:p></p>
<p class="MsoNormal"> Kristina asked about adding an option to pass an identifier in the credential offer<o:p></o:p></p>
<p class="MsoNormal"> Pedro talked about complexities that this would introduce<o:p></o:p></p>
<p class="MsoNormal"> Jacob said that including an identifier would make it instance specific<o:p></o:p></p>
<p class="MsoNormal"> Jacob said that identifiers are a solution to a different problem<o:p></o:p></p>
<p class="MsoNormal"> It is a subtyping problem<o:p></o:p></p>
<p class="MsoNormal"> Earlier we'd considered the DIF Credential Manifest spec but it was more complicated than our current solution<o:p></o:p></p>
<p class="MsoNormal"> Pedro said that if there's an entry in the metadata, it needs to be in a standard place<o:p></o:p></p>
<p class="MsoNormal"> Kristina said that the credential offer is untrusted<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://github.com/openid/OpenID4VCI/pull/64">
https://github.com/openid/OpenID4VCI/pull/64</a> - clarify credential error response can be authorization or credential request error<o:p></o:p></p>
<p class="MsoNormal"> Kristina asked for additional reviewers<o:p></o:p></p>
<p class="MsoNormal"> Pedro volunteered<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://github.com/openid/OpenID4VCI/pull/66">
https://github.com/openid/OpenID4VCI/pull/66</a> - add data integrity verifiable presentation as proof of possession<o:p></o:p></p>
<p class="MsoNormal"> Additional reviews needed<o:p></o:p></p>
<p class="MsoNormal"> <a href="https://github.com/openid/OpenID4VCI/pull/70">
https://github.com/openid/OpenID4VCI/pull/70</a> - Wallet notifying the Issuer of acceptance/rejection of issued credential<o:p></o:p></p>
<p class="MsoNormal"> Kristina asked about how to identify the desired credential<o:p></o:p></p>
<p class="MsoNormal"> We could use identifiers<o:p></o:p></p>
<p class="MsoNormal"> We could use a state parameter<o:p></o:p></p>
<p class="MsoNormal"> Brian said that it's a weird mismatch to only be able to communicate state of a group of credentials<o:p></o:p></p>
<p class="MsoNormal"> He questions whether this functionality is actually needed<o:p></o:p></p>
<p class="MsoNormal"> Brian suggested just sending the credential rather than an identifier<o:p></o:p></p>
<p class="MsoNormal"> Kristina said that if we add identifiers, we may want to make them mandatory<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 DCP/SIOP call will be Thursday, October 5 at 8am Pacific Time<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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