WHO SMART Trust
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This page is part of the Trust (v1.2.0: Release) based on FHIR (HL7® FHIR® Standard) v5.0.0. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

CodeSystem: WHO GDHCN Key Usage CodeSystem (Experimental)

Official URL: http://smart.who.int/trust/CodeSystem/KeyUsage Version: 1.2.0
Active as of 2025-04-02 Computable Name: KeyUsage

CodeSystem for GDHCN Key Usage that has usage codes for verification keys published to the Trust Network as defined by the certificate governance

This Code system is referenced in the content logical definition of the following value sets:

Generated Narrative: CodeSystem KeyUsage

This case-insensitive code system http://smart.who.int/trust/CodeSystem/KeyUsage defines the following codes:

CodeDisplayDefinition
SCA Signer Certificate Authority (SCA) A certificate which acts a trust anchor in the verification of the certificate chain for the DSCs issued by a Trust Network participant
DSC Document Signing Certificate (DSC) A certificate which may be used to verify a digital signature within a Verfifiable Digital Health Certificate
DECA Data Exchange Certificate Authority (DECA) A certificate which acts a trust anchor in the verification of the certificate chain for the DESCs issued by a Trust Network Participant
DESC Data Exchange Signing Certificate (DESC) A certificate which may be used to initiate a secure data exchange connection (e.g. mTLS) between Trust Network Participants
TLS Transport Layer Security (TLS) Used for establishing (m)TLS connections with systems, in particular between the Trust Network Gateway and backend systems of a Trust Network Participant
UP Upload (UP) 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