Use a source of true random numbers

[gafter]

Rather than using C++'s default, deterministic random number generator, we should one that uses a source of quantum noise. Most modern processors have instructions for fetching true random data, and I suspect the C++ standard library provides access to that.

[gafter]

See https://en.cppreference.com/w/cpp/numeric/random/random_device

[gafter]

See also

• for ARM: https://developer.arm.com/documentation/ddi0601/2023-12/AArch64-Registers/RNDR--Random-Number
• for Intel: https://en.wikipedia.org/wiki/RDRAND

Of course, you don't need to know these things to use the C++ library, but in case you were wondering how the library works, see these instructions. There are some interesting papers about how the instructions are implemented if you want to learn more.