Describing data exchange

The following image shows the data exchange process between two members. One member is the service consumer, who sends a request to the information system of the member providing the data service.

To describe data exchange:

1. The information system of the data service client (Service Consumer ) prepares a request and sends it to the client's security server.

2. The security server of the data service client receives a request from the information system and forwards it to the security server of the member providing the data service.

3. The security server providing the service forwards the received request to the data service provider's information system.

4. The data service information system prepares a response to the request and sends it to the associated security server.

5. The data service security server receives the response from the information system and forwards it to the client's security server.

6. The client's security server forwards the received response to the information system that submitted the request, where it is further processed or displayed.

7. Both security servers request a global configuration from the central server every minute, which describes all members, security servers, and subsystems.

8. Security servers turn to a timestamp service to stamp messages.

9. Security servers contact the OCSP ( Online Certificate Status Protocol ) service to obtain confirmation of the validity of certificates.