Create Membership Credential

[jjeroch]

Ticket creation done; but fine refinement likely still taking place

Summary

Depending on the credentialType, the respective credential is getting created by the issuer componenet.
In this ticket the credentialType Membership is handled

Details

Endpoint: /createCredential
(no new endpoint - this endpoint is implemented via #7 )

Credential Schema:

{
    "id": "uuid",
    "@context": [
        "https://www.w3.org/2018/credentials/v1",
        "https://w3id.org/catenax/credentials/v1.0.0"
        ],
    "type": ["VerifiableCredential", "MembershipCredential"],
    "issuanceDate": "{creation date - format: 2022-06-16T18:56:59Z}",
    "expirationDate": "{expiration date - format: 2022-06-16T18:56:59Z}",
    "issuer": "{did issuer}",
    "credentialSubject": {
        "id": "{did holder}",
        "holderIdentifier": "{bpn}",
        "memberOf": "{membership level}",
    }
}

Explanation:

• id is the uuid of the newly created credential - the uuid is defined by the issuer component
• context is fix defined for the current used schema - we should already consider that the schema might get updated in future ideally we are flexible to have this scenario that the old schema is set to "INACTIVE" and a new schema is used for new created credentials
• type is fix defined for this specific credential
• issuanceDate calculated on runtime
• expirationDate calculated by the issuer component based on defined credential static data expiry date => always not > 12 month
• issuer holds the issuer did
• credentialSubject
  • id holds the customer/holder did
  • holderidentifier BPN number of the holder
  • memberOf membership level - currently only "Catena-X" existing