https://www.sethserver.com/security/password-generator-53-bits-of-entropy.html Sethserver en 2026-09-21T14:00:00Z My Password Generators Had 53 Bits of Entropy password generator entropy crypto.getRandomValues PCG32 parseInt precision rejection sampling modulo bias Flask secret key Math.random CSPRNG postmortem https://cdn.sethserver.com/blog-images/password-generator-53-bits-of-entropy-social-1789663796.webp Close-up of an old mechanical combination lock whose dials mostly spin freely except for a few stuck tumblers, dramatic side lighting, dark background with subtle blue and amber accents, no text, no logos, no people My Password Generators Had 53 Bits of Entropy