Verifiable Credentials v2.0 Test Suite

This is the test suite for the W3C Verifiable Credentials Data Model (VCDM) v2.0 specification.

Table of Contents

• Background
• Install
• Setup
• Usage
• Implementation
  • VC-API
• Contribute
• License

Background

This test suite provides interoperability tests for verifiable credential processors (issuers/verifiers) that support the W3C Verifiable Credentials Data Model v2.0.

Install

npm i

Setup

In order to integrate with this test suite, you will need to use a VC-API compatible issuer and verifier that is capable of issuing and verifying verifiable credentials and verifiable presentations. If your implementation is not VC-API compatible, it is possible to "wrap" the implementation in a minimal VC-API implementation. Example code for which is available at https://github.com/Wind4Greg/Server-for-VCs

The issuer endpoint will need to conform to the VC Issuer API.

A request to issue a credential (/credentials/issue) will look like this:

{
  "credential": {
    "@context": [
      "https://www.w3.org/ns/credentials/v2",
      "https://www.w3.org/ns/credentials/examples/v2"
    ],
    "id": "http://university.example/credentials/1872",
    "type": ["VerifiableCredential", "ExampleAlumniCredential"],
    "issuer": "https://university.example/issuers/565049",
    "validFrom": "2023-07-01T19:23:24Z",
    "credentialSubject": {
      "id": "did:example:ebfeb1f712ebc6f1c276e12ec21",
      "alumniOf": {
        "id": "did:example:c276e12ec21ebfeb1f712ebc6f1",
        "name": "Example University"
      }
    },
  },
  "options": {}
}

The response from a call to issue a credential (/credentials/issue) will look like this:

{
  "verifiableCredential": {
    "@context": [
      "https://www.w3.org/ns/credentials/v2",
      "https://www.w3.org/ns/credentials/examples/v2"
    ],
    "id": "http://university.example/credentials/1872",
    "type": ["VerifiableCredential", "ExampleAlumniCredential"],
    "issuer": "https://university.example/issuers/565049",
    "validFrom": "2023-07-01T19:23:24Z",
    "credentialSubject": {
      "id": "did:example:ebfeb1f712ebc6f1c276e12ec21",
      "alumniOf": {
        "id": "did:example:c276e12ec21ebfeb1f712ebc6f1",
        "name": "Example University"
      }
    },
    "proof": {
      "type": "DataIntegrityProof",
      "cryptosuite": "eddsa-2022",
      "created": "2023-06-18T21:19:10Z",
      "proofPurpose": "assertionMethod",
      "verificationMethod": "https://university.example/issuers/565049#key-1",
      "proofValue": "zQeVbY4oey...V6doDwLWx"
    }
  }
}

The credential verifier endpoint will need to conform to the VC Verifier API.

A request to the verifier endpoint (/credentials/verify) for a credential will look like this:

{
  "verifiableCredential": {
    "@context": [
      "https://www.w3.org/ns/credentials/v2",
      "https://www.w3.org/ns/credentials/examples/v2"
    ],
    "id": "http://university.example/credentials/1872",
    "type": ["VerifiableCredential", "ExampleAlumniCredential"],
    "issuer": "https://university.example/issuers/565049",
    "validFrom": "2023-07-01T19:23:24Z",
    "credentialSubject": {
      "id": "did:example:ebfeb1f712ebc6f1c276e12ec21",
      "alumniOf": {
        "id": "did:example:c276e12ec21ebfeb1f712ebc6f1",
        "name": "Example University"
      }
    },
    "proof": {
      "type": "DataIntegrityProof",
      "cryptosuite": "eddsa-2022",
      "created": "2023-06-18T21:19:10Z",
      "proofPurpose": "assertionMethod",
      "verificationMethod": "https://university.example/issuers/565049#key-1",
      "proofValue": "zQeVbY4oey...V6doDwLWx"
    }
  },
  "options": {}
}

A response from the verifier endpoint (/credentials/verify) for a verifiable credential might look like this (only HTTP response codes are checked):

{
  "checks": ["proof"],
  "warnings": ["invalid-uri"],
  "errors": ["invalid proof"]
}

The presentation verifier endpoint will need to conform to the VC Verifier API.

A request to the verifier endpoint for a presentation (/presentations/verify) will look like this:

{
  "verifiablePresentation": {
    "@context": ["https://www.w3.org/ns/credentials/v2"],
    "type": ["VerifiablePresentation"],
    "holder": "did:example:holder123456789",
    "verifiableCredential": [{
      "@context": [
        "https://www.w3.org/ns/credentials/v2",
        "https://www.w3.org/ns/credentials/examples/v2"
      ],
      "id": "http://university.example/credentials/1872",
      "type": ["VerifiableCredential", "ExampleAlumniCredential"],
      "issuer": "https://university.example/issuers/565049",
      "validFrom": "2023-07-01T19:23:24Z",
      "credentialSubject": {
        "id": "did:example:ebfeb1f712ebc6f1c276e12ec21",
        "alumniOf": {
          "id": "did:example:c276e12ec21ebfeb1f712ebc6f1",
          "name": "Example University"
        }
      },
      "proof": {
        "type": "DataIntegrityProof",
        "cryptosuite": "eddsa-2022",
        "created": "2023-06-18T21:19:10Z",
        "proofPurpose": "assertionMethod",
        "verificationMethod": "https://university.example/issuers/565049#key-1",
        "proofValue": "zQeVbY4oey...V6doDwLWx"
      }
    }],
    "proof": {
      "type": "DataIntegrityProof",
      "cryptosuite": "eddsa-2022",
      "challenge": "08cf4ce0-2bd0-11ee-8622-83054936f200",
      "domain": "example.com",
      "created": "2023-06-18T21:19:10Z",
      "proofPurpose": "assertionMethod",
      "verificationMethod": "did:example:holder123456789#key-1",
      "proofValue": "zQeVbY4y...oDwLWxV6d"
    }
  },
  "options": {
    "challenge": "secret",
    "domain": "example.com"
  }
}

A response from the verifier endpoint (/credentials/verify) for a verifiable presentation might look like this (only HTTP response codes are checked):

{
  "checks": ["proof"],
  "warnings": ["invalid-uri"],
  "errors": ["invalid proof"]
}

Implementations are expected to not error when any of the following context files are used in a verifiable credential or a verifiable presentation:

• VC 2.0 Context - https://www.w3.org/ns/credentials/v2
• VC Examples Context - https://www.w3.org/ns/credentials/examples/v2

Usage

npm test

Implementation

VC-API

To add your implementation to this test suite You will need to add 3 endpoints to your implementation manifest.

• A credentials issuer endpoint (/credentials/issue) in the issuers property.
• A credentials verifier endpoint (/credentials/verify) in the verifiers property.
• A presentations verifier endpoint (presentations/verify) in the vpVerifiers property.

All endpoints will need the tag vc2.0. A simplified manifest will roughly look like the following:

{
  "name": "My Company",
  "implementation": "My implementation",
  "issuers": [{
    "id": "",
    "endpoint": "https://issuer.mycompany.com/credentials/issue",
    "tags": ["vc2.0"]
  }],
  "verifiers": [{
    "id": "",
    "endpoint": "https://verifier.mycompany.com/credentials/verify",
    "tags": ["vc2.0"]
  }],
  "vpVerifiers": [{
    "id": "",
    "endpoint": "https://verifier.mycompany.com/presentations/verify",
    "tags": ["vc2.0"]
  }]
}

This example above is for a set of unauthenticated endpoints. You may add zcap or oauth2 authentication to your endpoints.

See the vc-test-suite-implementations README here.

To run the tests, some implementations require client secrets that can be passed as env variables to the test script. To see which ones require client secrets, you can check the vc-test-suite-implementations library.

Contribute

See the CONTRIBUTING.md file in the w3c/vc-test-suite-implementations repo.

Pull Requests are welcome!

License

See the LICENSE.md file