How to use Fiddler's Root Certificate Authorit

Question

I would like to load the Root CA generated by Fiddler in FiddleCore to be use to sign HTTPS certificates on the fly. My reason for doing this is to be able to switch between Fiddler and FiddlerCore on the fly.

Answer 1

First the fiddler.certmaker.bc.cert and fiddler.certmaker.bc.key pref values in Fiddler are obtained by typing about:config in the QuickExec bar.

Afterwards in FiddlerCore (before starting the proxy) they are applied:

Fiddler.FiddlerApplication.Prefs.SetStringPref("fiddler.certmaker.bc.key", FIDDLER_KEY);
Fiddler.FiddlerApplication.Prefs.SetStringPref("fiddler.certmaker.bc.cert", FIDDLER_CERT);