Question Needing a X.509 Client Certificate issued by a trusted CA

Cecil

19+ years progress programming and still learning.
I know this is possibly not the best place to ask this question but you guys rock with a wealth of knowledge.

I'm consuming Web Services from a Government Department and they require that I provide them with X.509 certificate which has been assigned by a trusted CA provider.

The issue I having is I just don't know how to do this. I'm looking at using OpenSSL to get the initial process started but I can find instructions on creating the Client Certificate. Most of the CA providers only seem to provide certificates for Servers and not clients.

Can anybody help?
 
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