Using a device identity certificate in WKWebView

Hi. I'm currently using WKWebView to load our application's SSO page through Microsoft and I'm need to access the device identity certificates for the NSURLAuthenticationMethodClientCertificate in order to bypass MFA via device trust. I've read it would be easier with SFSafariViewController, but that's not an option for me, as I need to set custom cookies prior to loading the page, a thing which I understand is not possible with SF. Is there any way to access these certificates through WKWebView? Or is there anything else I can use that would let me both set custom cookies and access device identity certificates?