TLS Connection Handshake failes about iec104-python

[m-unkel]

Hey please try the provided script to generate certs:
https://github.com/Fraunhofer-FIT-DIEN/iec104-python/blob/main/bin/gen-certs.sh

But I will have a look at the example certs from lib60870c.

[MilanDeruelle]

Hey, thanks a lot for the quick answer. The generated certs work fine. I'll try if the lib60870 c version as well.

[m-unkel]

I tested the tests/client.py and tests/server.py scripts successfully against the example certificates provided in lib60870-C repository.

client.py

    tlsconf = c104.TransportSecurity(validate=True, only_known=True)
    tlsconf.set_certificate(cert=str(ROOT / "certs/client1.cer"), key=str(ROOT / "certs/client1-key.pem"))
    tlsconf.set_ca_certificate(cert=str(ROOT / "certs/root.cer"))
    tlsconf.add_allowed_remote_certificate(cert=str(ROOT / "certs/server.cer"))

server.py

    tlsconf = c104.TransportSecurity(validate=True, only_known=True)
    tlsconf.set_certificate(cert=str(ROOT / "certs/server.cer"), key=str(ROOT / "certs/server-key.pem"))
    tlsconf.set_ca_certificate(cert=str(ROOT / "certs/root.cer"))
    tlsconf.add_allowed_remote_certificate(cert=str(ROOT / "certs/client1.cer"))