We can still imagine a state actor spending the megadollars to research a reliable chip-cloning process, to bring parallel brute-forcing within reach. I wonder

We can still imagine a state actor spending the megadollars to research a reliable chip-cloning process, to bring parallel brute-forcing within reach. I wonder if the NSA have been on a SEM/FIB equipment buying spree lately. The ultimate way to defeat physical or software attacks is to exploit intrinsic properties of the universe, which suggests finding a mathematical and/or quantum structure impervious to both.