How can I implement this transition in pure Swift (UIKit)

Question

What I want to implement

Hi, I want to make a transition like in video. I understand, it have 3 changes: scale, fade and blur, first two is simple to implement, but the last one is not so easy. I'm trying to make a gaussian blur, but I can't animate inputRadius. In SwiftUI it looks like pretty simple just adding .blur() and that's it, but it usual Swift I don't know how to implement this