The OneSpan FIDO2 SDK provides two main business logic handlers, where each is responsible for a separate FIDO2 process: registration and authentication. It is necessary to supply them with the interface implementations they depend on. This section describes what needs to be implemented to use the SDK with your FIDO2 server.
Since deregistration is not in the scope of the FIDO2 WebAuthn documentation, storing and managing user data and session data is the responsibility of the integrator.