Try this again, but instead of: fake_random = 5 Try: fake_random = secret ^ real_random ^ 5 No matter what secret or real_random are, result is now

Try this again, but instead of: fake_random = 5 Try: fake_random = secret ^ real_random ^ 5 No matter what secret or real_random are, result is now 5. You can't hide secret or real_random from the processor. In a larger sense, there's no way to stop the processor from simply setting result to whatever it wants before returning it to the place where it's used. My point is, there's no real way to trust hardware that can't be verified.