We also can't worry about what is legal because legal and NATURAL LAW by GOD is not the same thing. I don't mean Natural Selection but I mean the laws of the Universe. We need code that is open source and protocols that work regardless of the "guard rails".
You are absolutely right about the back doors. There are plenty. All written law is meant to control those who want to be controlled or are doing so by ignorance. Written law is also a misdirection for the activities that will go on anyway by organized crime (government).
So in summation we have to say, "no".