opc ua pki

OPC UA Certificates: Trust, Rejection, and Why the First Handshake Fails

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The six stages of a first OPC UA connection drawn as boxes with numbered break points underneath: Hello and Acknowledge, the OpenSecureChannel request carrying the client certificate, the response carrying the server certificate, CreateSession, ActivateSession with the user token, and the first Browse or Read, with a different status code named at each break

OPC UA Certificates: Trust, Rejection, and Why the First Handshake Fails BadSecurityChecksFailed, status 0x80130000, is the answer an OPC UA server gives when it has decided not to talk to you and is not permitted to say why. Part 6 of the specification is explicit about it: the Reason string in an abort message “shall … Read more

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