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Aries AIP, Protocols, Credential Formats, and Aries RFCs Supported in ACA-Py

This document provides a summary of the adherence of ACA-Py to the Aries Interop Profiles, and an overview of the ACA-Py feature set. This document is manually updated and as such, may not be up to date with the most recent release of ACA-Py or the repository main branch. Reminders (and PRs!) to update this page are welcome! If you have any questions, please contact us on the #aries channel on OpenWallet Foundation Discord or through an issue in this repo.

Last Update: 2024-10-15, Release 1.1.0

The checklist version of this document was created as a joint effort between Northern Block, Animo Solutions and the Ontario government, on behalf of the Ontario government.

AIP Support and Interoperability

See the Aries Agent Test Harness and the Aries Interoperability Status for daily interoperability test run results between ACA-Py and other decentralized trust Frameworks and Agents.

AIP Version Supported Notes
AIP 1.0 Fully supported. Deprecation notices published
AIP 2.0 Fully supported.

A summary of the Aries Interop Profiles and Aries RFCs supported in ACA-Py can be found later in this document.

Platform Support

Platform Supported Notes
Server
Kubernetes BC Gov has extensive experience running ACA-Py on Red Hat's OpenShift Kubernetes Distribution.
Docker Official docker images are published to the GitHub container repository at https://ghcr.io/openwallet-foundation/acapy.
Desktop ⚠️ Could be run as a local service on the computer
iOS
Android
Browser

Agent Types

Role Supported Notes
Issuer
Holder
Verifier
Mediator Service See the aries-mediator-service, a pre-configured, production ready Aries Mediator Service based on a released version of ACA-Py.
Mediator Client
Indy Transaction Author
Indy Transaction Endorser
Indy Endorser Service See the aries-endorser-service, a pre-configured, production ready Aries Endorser Service based on a released version of ACA-Py.

Credential Types

Credential Type Supported Notes
Hyperledger AnonCreds Includes full issue VC, present proof, and revoke VC support.
W3C Verifiable Credentials Data Model Supports JSON-LD Data Integrity Proof Credentials using the Ed25519Signature2018, BbsBlsSignature2020 and BbsBlsSignatureProof2020 signature suites.

Supports the DIF Presentation Exchange data format for presentation requests and presentation submissions.

Work currently underway to add support for Hyperledger AnonCreds in W3C VC JSON-LD Format

DID Methods

Method Supported Notes
"unqualified" ⚠️ Deprecated Pre-DID standard identifiers. Used either in a peer-to-peer context, or as an alternate form of a did:sov DID published on an Indy network.
did:sov
did:web Resolution only
did:key
did:peer Algorithms 2/3 and 4
Universal Resolver A plug in from SICPA is available that can be added to an ACA-Py installation to support a universal resolver capability, providing support for most DID methods in the W3C DID Method Registry.

Secure Storage Types

Secure Storage Types Supported Notes
Aries Askar Recommended - Aries Askar provides equivalent/evolved secure storage and cryptography support to the "indy-wallet" part of the Indy SDK. When using Askar (via the --wallet-type askar startup parameter), other functionality is handled by CredX (AnonCreds) and Indy VDR (Indy ledger interactions).
Aries Askar-AnonCreds Recommended - When using Askar/AnonCreds (via the --wallet-type askar-anoncreds startup parameter), other functionality is handled by AnonCreds RS (AnonCreds) and Indy VDR (Indy ledger interactions).

This wallet-type will eventually be the same as askar when we have fully integrated the AnonCreds RS library into ACA-Py.
Indy SDK Removed in ACA-Py Release 1.0.0rc5

Existing deployments using the Indy SDK MUST transition to Aries Askar and related components as soon as possible. See the Indy SDK to Askar Migration Guide for guidance.

Miscellaneous Features

Feature Supported Notes
ACA-Py Plugins The ACA-Py Plugins repository contains a growing set of plugins that are maintained and (mostly) tested against new releases of ACA-Py.
Multi use invitations
Invitations using public did
Invitations using peer dids supporting connection reuse
Implicit pickup of messages in role of mediator
Revocable AnonCreds Credentials
Multi-Tenancy Documentation
Multi-Tenant Management The Traction open source project from BC Gov is a layer on top of ACA-Py that enables the easy management of ACA-Py tenants, with an Administrative UI ("The Innkeeper") and a Tenant UI for using ACA-Py in a web UI (setting up, issuing, holding and verifying credentials)
Connection-less (non OOB protocol / AIP 1.0) Only for issue credential and present proof
Connection-less (OOB protocol / AIP 2.0) Only for present proof
Signed Attachments Used for OOB
Multi Indy ledger support (with automatic detection) Support added in the 0.7.3 Release.
Persistence of mediated messages Plugins in the ACA-Py Plugins repository are available for persistent queue support using Redis and Kafka. Without persistent queue support, messages are stored in an in-memory queue and so are subject to loss in the case of a sudden termination of an ACA-Py process. The in-memory queue is properly handled in the case of a graceful shutdown of an ACA-Py process (e.g. processing of the queue completes and no new messages are accepted).
Storage Import & Export ⚠️ Supported by directly interacting with the Aries Askar (e.g., no Admin API endpoint available for wallet import & export). Aries Askar support includes the ability to import storage exported from the Indy SDK's "indy-wallet" component. Documentation for migrating from Indy SDK storage to Askar can be found in the Indy SDK to Askar Migration Guide.
SD-JWTs Signing and verifying SD-JWTs is supported

Supported RFCs

AIP 1.0

All RFCs listed in AIP 1.0 are fully supported in ACA-Py, but deprecation and removal of some of the protocols has begun. The following table provides notes about the implementation of specific RFCs.

RFC Supported Notes
0025-didcomm-transports ACA-Py currently supports HTTP and WebSockets for both inbound and outbound messaging. Transports are pluggable and an agent instance can use multiple inbound and outbound transports.
0160-connection-protocol DEPRECATED In the next release, the protocol will be removed. The protocol will continue to be available as an ACA-Py plugin, but those upgrading to that pending release and continuing to use this protocol will need to include the plugin in their deployment configuration. Users SHOULD upgrade to the equivalent AIP 2.0 protocols as soon as possible.
0036-issue-credential-v1.0 DEPRECATED In the next release, the protocol will be removed. The protocol will continue to be available as an ACA-Py plugin, but those upgrading to that pending release and continuing to use this protocol will need to include the plugin in their deployment configuration. Users SHOULD upgrade to the equivalent AIP 2.0 protocols as soon as possible.
0037-present-proof-v1.0 DEPRECATED In the next release, the protocol will be removed. It will continue to be available as an ACA-Py plugin, but those upgrading to that pending release and continuing to use this protocol will need to include the plugin in their deployment configuration. Users SHOULD upgrade to the equivalent AIP 2.0 protocols as soon as possible.

AIP 2.0

All RFCs listed in AIP 2.0 (including the sub-targets) are fully supported in ACA-Py EXCEPT as noted in the table below.

RFC Supported Notes
Fully Supported

Other Supported RFCs

RFC Supported Notes
0031-discover-features Rarely (never?) used, and in implementing the V2 version of the protocol, the V1 version was found to be incomplete and was updated as part of Release 0.7.3
0028-introduce
00509-action-menu