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Summary

Excerpt
  • Proposed AnonCreds v2.0 Data Models - Presentation - Mike Lodder
  • Open Discussion

...

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Meeting Attendees

Stephen Curran (BC Gov / Cloud Compass Computing Inc.) <swcurran@cloudcompass.ca>

...

  • Welcome and Introductions
  • Announcements:
    • IIW – April 18-20 – Let's plan some presentations.
    • New v2.0 Specification Repository created.
  • Updates to the Agenda

Agenda

  • Mike Lodder will continue a discussion of the Data Models he is proposing for AnonCreds v2.0, this time talking about Presentations
    • Data Models HackMD document:  https://hackmd.io/ZlsnLoclSveePJOZljgMfA
    • Notes from Meeting:
      • Contents of the Issued Credential – easily mapped into other formats, such as the W3C VC Data Model.
        • Open question on where encoding occurs – within AnonCreds (better interoperability, less data to store, more computation) or by the Issuer.
      • PresentationSchema
        • A possibly published data structure used by the Verifier to ask for data from the Holder.
        • Atomic – when requested, a Proof based on a PresentationSchema is either proven or not.
        • Can use something like DIF Presentation exchange to AND/OR a set of PresentationSchemas in to a Presentation Request – plus adding an ID and a nonce.
        • Different types of proofs were covered – from plain signatures to range-proofs.
        • Different crypto can be used.
  • Plans for IIW?
  • Next Meeting (two weeks):
    • Suspension vs./as well as revocation?
    • Collect some use case specific examples and continue this discussionthe discussions:
      • Applying the data structures to a real use case or two
        • Take an existing AnonCreds Schema (maybe this) and Credential Definition (maybe this) and define what it would be using Mike's proposed data models.
          • Where would the data models exist, such as on ledger, in the AnonCreds specification?
      • What concrete uses other than link-secret is there for blinded data in a credential?
    • ALLOSAUR Revocation

Future Calls

To Dos:

  • Create a repository for the specificationPlan session for IIW on AnonCreds.

Action items