Reproducible fingerprints

[wirelyre]

It would be nice to be able to reproduce fingerprints exactly!

Right now the only configuration options are "initialize to 0" (reproducible) or "use the thread RNG" (not reproducible), but maybe you could optionally pass in your own RNG.

xorf/src/prelude/mod.rs

Lines 92 to 110 in def7fcd

	macro_rules! make_fp_block(
	($size:ident) => {
	{
	#[cfg(feature = "uniform-random")] {
	use rand::Rng;
	let mut rng = rand::thread_rng();
	let mut block = Vec::with_capacity($size);
	for _ in 0..$size {
	block.push(rng.gen());
	}
	block.into_boxed_slice()
	}
	#[cfg(not(feature = "uniform-random"))] {
	make_block!(with $size sets)
	}
	}
	}
	);

[ayazhafiz]

Seems reasonable. Happy to accept a patch for this.