How do I use a client certificate using HTTPS?

Ok, so I looked around and found pieces of what I need. I want to provide this for everyone who is struggling. All files were placed in PEM format. I used a file client.key

to generate the CSR that was provided to the server admin. In return, I got a P7B file, which I then needed to convert to PEM files. Files root.cer

and client.cer

came from P7b.

  uri = URI.parse(my_url_stril)
  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.cert = OpenSSL::X509::Certificate.new(File.read("client.cer"))
  http.ca_file = 'root.cer'
  http.key = OpenSSL::PKey::RSA.new(File.read("client.key"))
  request = Net::HTTP::Post.new(uri.request_uri)
  request.body = body
  response = http.request(request)

      

        
        
        
      

    

Let me know if you need more information!