FHIR IG Statistics: CodeSystem/KeyUsage

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Narrative

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Source

{
  "resourceType": "CodeSystem",
  "id": "KeyUsage",
  "text": {
    "status": "generated",
    "div": "<!-- snip (see above) -->"
  },
  "url": "http://smart.who.int/trust/CodeSystem/KeyUsage",
  "version": "1.1.6",
  "name": "KeyUsage",
  "title": "WHO GDHCN Key Usage CodeSystem",
  "status": "active",
  "experimental": true,
  "date": "2025-07-09T09:43:25+00:00",
  "publisher": "WHO",
  "contact": [
    {
      "name": "WHO",
      "telecom": [
        {
          "system": "url",
          "value": "http://who.int"
        }
      ]
    }
  ],
  "description": "CodeSystem for GDHCN Key Usage that has usage codes for verification keys published to the Trust Network as defined by the [certificate governance](concepts_certificate_governance.html)",
  "jurisdiction": [
    {
      "coding": [
        {
          "system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
          "code": "001"
        }
      ]
    }
  ],
  "caseSensitive": false,
  "content": "complete",
  "count": 6,
  "concept": [
    {
      "code": "SCA",
      "display": "Signer Certificate Authority (SCA)",
      "definition": "A certificate which acts a trust anchor in the verification of the certificate chain for the DSCs issued by a Trust Network participant"
    },
    {
      "code": "DSC",
      "display": "Document Signing Certificate (DSC)",
      "definition": "A certificate which may be used to verify a digital signature within a Verfifiable Digital Health Certificate"
    },
    {
      "code": "DECA",
      "display": "Data Exchange Certificate Authority (DECA)",
      "definition": "A certificate which acts a trust anchor in the verification of the certificate chain for the DESCs issued by a Trust Network Participant"
    },
    {
      "code": "DESC",
      "display": "Data Exchange Signing Certificate (DESC)",
      "definition": "A certificate which may be used to initiate a secure data exchange connection (e.g. mTLS) between Trust Network Participants"
    },
    {
      "code": "TLS",
      "display": "Transport Layer Security (TLS)",
      "definition": "Used for establishing (m)TLS connections with systems, in particular between the Trust Network Gateway and backend systems of a Trust Network Participant"
    },
    {
      "code": "UP",
      "display": "Upload (UP)",
      "definition": "Used to verify digital signature of cryptographically signed content uploaded to services within the Global Digital Health Certification Network, in particular the Trust Network Gateway"
    }
  ]
}