OIBus certificate : accept and produce DER format as well

[matthieurolland]

When connecting OIBUs to an OPCUA server, we need to put the server certificat in trusted certs of the OPCUA South and the OIBus self-signed certificate in the server trusted clients wallet (usually import).

OIBus uses PEM as certificat format while some OPCUA servers (Kepware) use DER format. So we need to convert certificates which is long (requires to download it locally, run the commande, export the converted file back to the distant machine and import / put it at the right place).

Could we

1. have OIBus accept PEM and DER certificate ?
2. have OIBus create certificates in both PEM and CER format ?

Better, although I do not know if it is possible : is there a standard for exchanging certificates with manual validation on client and server side ? If so, that would be great to avoid copy pasting certificates.