hojas/interesting/von_neumann_extractor.md
2026-08-23 22:35:18 +02:00

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# Von Neumman extractor
A very simple procedure to extract proper randomness out of a weak source of entropy such a biased dice.
https://prefetch.eu/know/concept/von-neumann-extractor/
You can use it to make true 128bits of randomness (for example, for a Bitcoin seed) with a crappy dice (as long as you through it randomly enough).