2020-05-04 Indy Contributors Call

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• @Stephen Curran  (Cloud Compass Computing Inc.) <swcurran@cloudcompass.ca>

• @Brent Zundel (Evernym, Inc.) <brent.zundel@evernym.com>

• Identity Implementer Working Group call (Wiki Page) - every 2nd Thursday

• Move from Sovrin Foundation infrastructure - Wade Barnes

  • Move from Jenkins to GitHub actions

    • Sovrin Foundation Jenkins machines are going away

    • Sovrin resource migration

    • #cicd discussion "Indy CI / CD Migration" (in #cicd use menu item "Discussions" to see/get to the discussion)

  • Move repo.sovrin.org → Hyperledger Artifactory for all except Sovrin Foundation specific artifacts

• Indy Node

  • April: no release

  • May:

    • Replacing Indy Crypto with Ursa (Kiva)

    • More "rich schema" objects

    • Ubuntu 20.04 (Kiva)

      • Need to check additional dependencies: 

        Error rendering macro 'jira' : null

• Indy SDK

  • April: no release

  • May/June:

    • Indy VDR into LibIndy

    • Indy Credx into LibIndy

• Aries Shared Libraries

  • Aries Shared:

    • indy-vdr (Andrew Whitehead)  https://github.com/hyperledger/indy-vdr

      • Nearing release 0.6(?) - most work complete that was needed: Design doc, FFI, testing, CI / CD

        • CI - GitHub actions runs unit tests and basic integration tests

        • CD not there

        • No design doc, but crate docs

        • Rich Schema merged and behind a feature flag

        • Refactoring PR not merged - cleanup, internal simplification, crate docs

      • As an Aries interface becomes standardized, will add that API layer

      • VON Network browser moved to Indy-VDR - branch

      • BC Gov created a tails server based on Indy-VDR - with dynamic ledger access

    • indy-credx - https://github.com/andrewwhitehead/indy-credx

      • need to move ASAP to at least BC Gov repo - @Andrew Whitehead

      • ACA-Py branch created that can do credential exchange with indy-credx

      • Next up: adding revocation 2.0 support

      • Integrating upgraded PyO3 library

    • indy-shared-rs - https://github.com/bcgov/indy-shared-rs

      • Shared features across indy-vdr and indy-credx

      • pack/unpack on Ursa (not libsodium)

      • home for revocation support?  Or at least shared set membership proof handling?

      • Move to Hyperledger move this week...

    • aries-credx

      • https://github.com/sovrin-foundation/aries-credx-framework-rs

        • 6 most common attribute encodings

        • Does not have anoncreds 1 attribute encoding.

      • Can make a non-revocable credential and create proofs.

        • Tagging will be moved to the KMS.

        • Mike will be working on revocation registry 2.0

    • Aries Secure Storage initiatives:

      • Mike working on documentation and architecture as an Aries RFC (KMS architecture) and Ursa RFC (API)

        • PR is submitted: https://github.com/hyperledger/aries-rfcs/pull/440

      • Mike and Cam's work aries-kms-mayaguez - Postgres backend for credential storage
        https://github.com/sovrin-foundation/aries-kms-rs

        • Persistence work allows plugging in any database engine.

        • Focus is using an external enclave.

  • Ursa

    • BBS+ added

    • 0.3.5 pending, plus new additions

• IIW

  • BBS+

  • DIDComm and CHAPI Discussion

• Update: Move to GitHub Issues from JIRA for indy-sdk, indy-node, indy-plenum

  • Issues now active

  • Pending: Putting in the PR to announce location of issues in READMEs

• Update: Migrate Jenkins to GitHub Actions (and perhaps Azure pipelines)

  • Plan started - Sovrin resource migration

  • Resources:  Wade Barnes (BC Gov), Thor Wolpert (BC Gov) for first step (Indy SDK/Linux)

• Revocation 2.0 - Tech Spike on Merkle Trees in process (@Daniel Hardman)

  • Tech Spike Implementation: https://github.com/dhh1128/merklespike 

  • Notes on Issues: size of compressed leaves, resources to calculate internal nodes 

  • Next steps - continue with the spike

  • Side note: Digital Bazaar is using a bit field as non-ZKP revocation registry

• BBS+ Signatures enables ZKPs with JSON-LD

  • Draft Spec: http://mattrglobal.github.io/jsonld-signatures-bbs-spec/

  • Draft spec repo: http://github.com/mattrglobal/jsonld-signatures-bbs-spec

  • BBS+ signature implementations: https://github.com/mattrglobal/node-bbs-signatures https://github.com/andrewwhitehead/ursa-bbs-py

  • JSON-LD signature suite to use with VC-JS: http://github.com/mattrglobal/jsonld-signatures-bbs

  • Regarding credential schema definitions in the vc data model: http://w3c.github.io/vc-data-model/#data-schemas

  • Proof formats in the VC Data Model: http://w3c.github.io/vc-data-model/#proof-formats

  • The paper for “provable security”: http://eprint.iacr.org/2016/663.pdf

  • Next steps:

    • Revocation - credential status field

    • Predicates?

    • CCG - being put forward by Mattr

    • Question: How does required reveal work at the crypto layer?

Next call:

Future:

• Requirements questions:

  • IS-1099: anoncreds.prover_get_credentials_for_proof_req should return per-credential timestamp

    • Should we allow duplicate credentials from the same issuer?

Open