2024-04-30 Aries Cloud Agent - Python Users Group Community Meeting

Summary:

Zoom Link: https://zoom.us/j/98856745538?pwd=VkJROWRxeW43d3hOdnJLemwrS0JKUT09

Call Time: 8:00 Pacific / 17:00 Central Europe

Recordings From the Call:  

Welcome, Introductions and Announcements

Attendees

• @Daniel Bluhm (Indicio PBC) <daniel@indicio.tech>

• @Wade Barnes (Neoteric Technologies Inc / BC Gov) <wade@neoterictech.ca>

• @Emiliano Suñé (Quartech / BC Gov) <emiliano.sune@quartech.com>

Documentation:

• ACA-Py documentation: https://aca-py.org

Agenda

• Status of ACA-Py 0.12.1

  • Release 0.12.1rc1 available – any issues found?

  • Potential issue – the "holder_did" / "entropy" issue – Issue 2923

    • Limited to the AnonCreds in W3C VCDM Format code?

  • Anything else to add?  

• Once 0.12.1 is out – ready for 1.0.0rc4?

  • Include the tenant authorization changes?

  • Wait for the drop Indy SDK to be ready to merge?

  • AnonCreds RS PRs – finally!

• Main Topic: Adding DIDComm v2 Support to ACA-Py – @Daniel Bluhm @Frostyfrog 

  • Uses DMP: https://github.com/Indicio-tech/didcomm-messaging-python

  • https://github.com/frostyfrog/didcomm-v2-test-util

  • https://github.com/Indicio-tech/aries-cloudagent-python/tree/feat/didcommv2-proof-of-concept

  • Diff: https://github.com/hyperledger/aries-cloudagent-python/compare/main...Indicio-tech:aries-cloudagent-python:feat/didcommv2-proof-of-concept

• ED25519 2020 Verification of JSON-LD Signatures

  • Can issue the credentials

  • When trying to verify – looking for the old style (2018) format – needs to be update

    • Verification is failing because decoding the public key incorrectly – wrong key, looking for base58 key, should be looking for multi-base.

    • @Daniel Bluhm does real time debugging and identifies the problem.  Cool!

      • Likely here: https://github.com/hyperledger/aries-cloudagent-python/blob/3892e8cfa8fbe7cccc5d20f2e80762ef67bc5a66/aries_cloudagent/vc/ld_proofs/crypto/wallet_key_pair.py#L62-L73

  • Decoding is likely in ACA-Py

• VCDM 2.0 – need to add support for that.

  • Be able to receive/process 2.0 and 1.1

  • Flag at issue time to send 1.1 or 2.0?

  • Discussion for tomorrow at Aries Working Group call to discuss the new vc-di attachment format.

  • How to manage the transition from the current JSON-LD vs using the VC-DI attachment format?

    • How to retain backwards compatibility?

    • How to use the new VC-DI attachments.

    • Importance – using ACA-Py with VC-API – see this issue: https://github.com/w3c-ccg/vc-api/pull/382

• Open Discussion

Upcoming Meeting Topics:

Future Topics

• Formal test plan

  • We go through a process of release candidates but we often still end up discovering bugs after releases are out

  • Daniel to create an issue to start a discussion

Action items