Minutes - Security WG 2022-12-14

Attendees

• Anthony Maton
• Bart Decuypere
• Bart Rondou
• Brecht Van Vooren
• Cyprien Janssens
• Félix De Tavernier
• Jan Stinissen
• Jean-Michel Polfliet
• José Costa Teixeira
• Karlien Erauw
• Philippe Baise
• Steven Van den Berghe
• Werner De Mulder

Excused/Not present

• Bruno Casneuf
• Erwin Bellon
• Hannes De Clercq
• Isabelle Pollet
• Jan Lenie
• Nick Hermans
• Pablo d'Alcantara

Agenda

• Context / needs
• Identification of other stakeholders
• Position of HL7 Belgium on the FHIR R5 release (to cover the already upcoming questions from players and stakeholders in Belgium)
• Security controls
• Literal references in FHIR resources: need for guidelines ?
• FHIR readiness of Belgian metahub-hub system: see preparation work

Minutes

• all hubs need to be present: Cozo, VNZ, RSW)- Karlien will reach out to them
• first agenda point: security controls - linked to access matrix, see background

• access matrix from eHealth platform need to be mapped to FHIR
• possible solution in security labels if we make it a required field as an extension

• we would need to define a default behavior
• would be at if the label is there, only some attributes would be exposed/shared

• José proposes to start with an implementation guide (not a slide deck) at Belgian level
• the topic relates to work start at HL7 int'l - put scty labels at resource level

• an extension is planned to include an new resource permission (htis person can use these specific data elements)
• starting with scty labels would be a good starting point
• there will be need for guidance for each FHIR release

• Denmark solution: those concepts were modelled independently of the resources
• Steven has implemented solutions that identify the resource (type of info) and not the user
• the application level also defines some rules and behavior of the server
• the access matrix might turn in an unimplementable thing
• the access matrix can change overnight which needs to be taken into account - discussions are still ongoing (paradigm shift)
• attribute base filtering: servers are assumed to filter attributes is concern
• do we have to look at some languages
• These requirements have been identified:

• whatever solution it should be evolutive
• decouple the type of data from the access permissions. So label things as "contains psi information" instead of "can only be accessed by psi people"
• coexistence of consent and permission ruled access controls

• action item: start specification in order to move to implementation guide

• all hubs need to be present: Cozo, VNZ, RSW)- Karlien will reach out to them
• second agenda point: references

• literal references (resources are identified and addressed by their URL) <> logical references (a logical reference to the entity that the target resource would describe without it begin pointing to something that actually exist as a FHIR instance)
• at Vitalink they have built in a logic to determine which kind of reference it is
• do we need a guideline here as HL7 FHIR gives the liberty

• the meeting is adjourned at 10AM as the majority of the people has to leave for another meeting

Next meeting

• Wednesday 25 Jan at 9AM - biweekly schedule is still in need of confirmation due to some stakeholders being absent