How to mask XOR in UIImage

Question

I want UIImage masking something like this as shown in the image below but using coregraphics masking, any answer is appreciated

Answer 1

func maskImage(image:UIImage, mask:(UIImage))-> UIImage {

    let imageReference = image.cgImage

    let maskReference = mask.cgImage

    let imageMask = CGImage(maskWidth: maskReference!.width, height: maskReference!.height, bitsPerComponent: maskReference!.bitsPerComponent, bitsPerPixel: maskReference!.bitsPerPixel, bytesPerRow: maskReference!.bytesPerRow, provider: maskReference!.dataProvider!, decode: nil, shouldInterpolate: true)

    let maskedReference = imageReference!.masking(imageMask!)

    let maskedImage = UIImage(cgImage:maskedReference!)

    return maskedImage

}