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I want to build an app that allows user to login with client certificate stored by MDM. After days of googling, I think it's not possible given the discussions in this thread https://forums.developer.apple.com/thread/52345. However, it looks like I can somehow utilize Safari(system app) to authenticate for me. I've tried MS apps and found this flow seems positive.Basically, the flow should look like below:1. User launches my app and start entering the credential. (login page is WKWebView)2. My app detects that user has certificate installed on the device3. My app calls [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://url"]]; to launch Safari4. Safari prompts up a dialog to have user consent the use of certificate5. Safari closes itself (or redirects to my app. I'm not sure how this part is handled) after authentication.6. My app needs a way to inject the result from Safari to WKWebViewI can't find any complete tutorial on how this can be accomplished. Also, I found that in the same discussion thread, didReceiveAuthenticationChallenge was mentioned that might have a solution for this, but I tried it and no luck.