title: Passing pfx certificate in a R code or converting pfx certificate into pem in R
body: <p>So I am calling an API that requires me to have a pfx certificate linked either to my browser or to Postman if I am calling that API. I want to do this programmatically. If there is a code in R that let's me use my existing pfx certificate while passing the post request or a function that I can use to convert my existing pfx certificate to pem certificate.
  Kindly help me in solving the issue.</p>