TLS with Client Certificate

[Mark_Yedinak]

How can I add a client certificate to a TLS connection? I am using LabVIEW 2020 and I am connecting to a server that requires a client certificate. I am not seeing how to add the client certificate. For HTTPS and SMTP there is a configure TLS vi which includes an input for the client certificate however I do not see that in the base level TLS VIs.

[rolfk]

I haven’t used them yet but aren’t these functions what you need? 
https://www.ni.com/docs/en-US/bundle/labview-2020/page/lvcomm/tls_functions.html

[Mark_Yedinak]

Yes, those are the VIs we are using however I don't see any way to specify the client certificate. I can add a CA certificate. I can add a private key but I cannot define the client certificate. If you look at the network trace the client hello packet includes a section for the client certificate but it is always empty.

[rolfk]

Then I have to defer this to someone else, hopefully someone from the LabVIEW team will see this. It very well might have simply been forgotten.

If a third party Toolkit would be an option you might want to take a look at the LabVIEW Encryption Compendium. It’s a fairly extensive library supporting IPv6 and TLS among more specific pure encryption functions.

[jerry.wu]

Hi Mark,

I am facing the same problem, have you found any solution for this ?