2024-04-22 AnonCreds Working Group Meeting

Summary

• Recap of IIW as it relates to AnonCreds
• VC-DI-BBS Specification and AnonCreds V2 - Similarities and Differences
• Getting BBS+ Support in AnonCreds v2
• Other efforts towards the next version of Privacy Preserving VCs

Time: 7:00 Pacific / 16:00 Central Europe
Call Link: https://zoom.us/j/97954159540?pwd=WWk3WmQ3MVh1SXBYZGVreGl0QllGdz09

Recording: 

Notices: 

This specification creating group operates under the Linux Foundation Community Specification License v1.0.

Meeting Attendees

• Stephen Curran (BC Gov / Cloud Compass Computing Inc.) <swcurran@cloudcompass.ca>
• Steve McCown (Anonyome Labs) <smccown@anonyome.com>

Related Specifications and Repositories:

• AnonCreds v1.0:
  • The v1.0 specification is published here: https://hyperledger.github.io/anoncreds-spec/
  • The Working Group uses this GitHub repository to manage the specification: https://github.com/hyperledger/anoncreds-spec
  • The AnonCreds Methods Registry: https://hyperledger.github.io/anoncreds-methods-registry
  • The v1.0 implementation in Rust is here: https://github.com/hyperledger/anoncreds-rs
  • The v1.0 implementation is dependent on this Rust CL Signatures implementation: https://github.com/hyperledger/anoncreds-clsignatures-rs
• AnonCreds v2.0
  • The initial framework for the v2.0 specification repository is here: https://github.com/hyperledger/anoncreds-spec-v2
  • The v2.0 implementation in Rust is here: https://github.com/hyperledger/anoncreds-v2-rs
  • Underlying AnonCreds v2.0 are cryptographic libraries in Hyperledger Labs Agora

Meeting Preliminaries:

• Welcome and Introductions
• Announcements:
  • Workshop Wed. April 24th: Zero Knowledge Proofs and ZK Programming in Blockchain Application Development
• Any updates to the Agenda?

Agenda

• Status Updates:
  • AnonCreds v1 in W3C VCDM Format - Status/Updates
    • Test Vectors Repo: https://github.com/TimoGlastra/anoncreds-w3c-test-vectors
    • Credo / Bifold Complete
    • ACA-Py Progress
  • Status update on the Hyperledger Labs Agora Libraries
• Recap of IIW as it relates to AnonCreds
• VC-DI-BBS Specification and AnonCreds V2 - Similarities and Differences
• Getting BBS+ Support in AnonCreds v2
• Other efforts towards the next version of Privacy Preserving VCs
• Open Discussion

To Dos:

Action items

• Links to be referenced in the spec and used where needed:
  
  • From Will Abramson : https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.186.5994&rep=rep1&type=pdf
  • From Will Abramson : https://github.com/hyperledger/indy-hipe/blob/c761c583b1e01c1e9d3ceda2b03b35336fdc8cc1/text/anoncreds-protocol/README.md