mdoc issuer initialization

Procedure

Write the issuer DID of the agent to a ledger or set the agents DID method to did:web.

Create or retrieve a credential schema.

For example, the following command creates a credential schema for issuing a subset of the ISO 18013.5.1 Mobile Driver’s Licenses (mDL) fields.

curl --location 'https://${service_url}/v2.0/diagency/credential_schemas' \
   --header 'Content-Type: application/json' \
   --header 'Authorization: Bearer ${issuer1_verifiable_credentials_access_token}' \
   --data '{
    "name": "mdl",
    "version": "1.0",
    "contexts": [
        {
            "@context": {
                "schema": "http://schema.org/",
                "org.iso.18013.5.1:family_name": {
                    "@id": "org.iso.18013.5.1:family_name",
                    "@type": "schema:Text"
                },
                "org.iso.18013.5.1:given_name": {
                    "@id": "org.iso.18013.5.1:given_name",
                    "@type": "schema:Text"
                }
            }
        }
    ]
}'

Note: The schema format must be namespace:field.

Create a credential definition: A credential definition uniquely identifies the issuing agent and the attributes that are included in the credential. It is created by using the schema ID. A credential schema contains the data model for issuing credentials whereas a credential definition defines the encoding and security aspects of the issued credential.
Create a credential definition for issuer1 associated with the credential schema id.
```
{
    "schema_id": "xxxxxx",
    "credential_document_type": [
        "org.iso.18013.5.1.mDL"
    ],
    "credential_format": "mso_mdoc",
    "cryptographic_binding_methods": [
        "cose_key"
    ],
    "key_proof_types": {
        "ldp_vp": [
            "eddsa-rdfc-2022"
            // Or "Ed25519Signature2020"
        ]
    },
    "credential_signing_algorithm": "EdDSA"
}
```
Note: The credential document type must be a single item that is used as the mdoc doctype.

The response includes the preceding configuration, a copy of the specified schema, and a unique ID for the credential definition.
- For ldp_vp, the value must be an array that contains Ed25519Signature2020 or eddsa-rdfc-2022.
- The supported value for credential_signing_algorithm is EdDSA.
Optional: To enable status information for credentials issued from this credential definition, add a credential status provider by including the following in the credential definition request body:
```
{
    “credential_status_provider”: {
          “id”: “86a7c919-bb0c-4e77-92b1-a3bd33a69131”
          “enabled_status_purposes”: [“revocation”, “suspension”]
    }
}
```
For more information, see Enabling status information.

What to do next

After the issuer initialization is complete, issuer1 can issue a credential to user1.