How would I generate a private key using a MD5 fingerprint?
===

I had a private key for an application on my old Mac, that I tossed out lately, without exporting the key and transferring the key onto my new Mac. I happened to find the MD5 fingerprint for the key in one of my files. How would I renew/regenerate the private key using the MD5 fingerprint? Is there any other information that I would need to renew/regenerate the key? How would I go about doing this? (I'm more of a graphical interface person, not a Terminal person, so noting that would be appreciated.)