[vlovich123]

Afaik that kind of entropy generation is silly on modern machines. You should just call getrandom (or whatever the equivalent is for the modern OS it’s running on is) and be done with it. Hand rolled entropy like this isn’t necessary anymore - the OSes have very high quality CSPRNGs baked in natively and seeded directly from interrupts and other HW entropy sources.

[Grimburger]

> isn’t necessary anymore

It also doesn't hurt if you hash it into or xor with existing randomness, it will still be as strong as the best source of entropy you have even if it's all 0's being mixed in.

[tetris11]

Good point. Is entropy built into the kernel, though? Last time I checked this I had to manually enable it as a system service, though this was a fair few years back.