If you look at modern crypto libs you’ll see most operations require an rng function. This isn’t because random data is added to the operation, it is to make sure the operations on the data are obscured during lengthy operations that can be replayed for differential power analysis. Like ECDH secret mixing will add random numbers to the points and the normalize them out after the point multiply. It’s pretty damn clever.
I think step 1 of getting something like secret keys out of Xbox or
whatever would be learning to 3D print micrometer scale antenna arrays
and use those fancy broadband SDR chips someone was talking about the
other day with some image source and phased array tricks used in radar
to precisely sniff out whats going on and where.
