A Deterministic Random Bit Generator based on AES in Counter mode (AES-CTR-DRBG) as specified in NIST SP 800-90A written in Go.
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Updated
Aug 22, 2026 - Go
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nist-sp-800-90a
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Browser-based NIST SP 800-90A demo — HMAC_DRBG, CTR_DRBG, and Hash_DRBG with state visualizers, seeding, reseeding, and live NIST SP 800-22 statistical tests. The correct-case companion to Corrupted Oracle.
cryptography entropy csprng pseudorandom hmac-drbg drbg random-number-generation statistical-testing crypto-lab ctr-drbg dual-ec-drbg fips-140 hash-drbg nist-sp-800-90a
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Oct 1, 2026 - TypeScript
Browser-based entropy failure demo — NIST SP 800-90B. DRBG Arena teaches how the generator works; this asks where the seed came from. Snapshot a VM, restore two copies, watch both emit the same session key from an honest, uncompromised, correct DRBG. Fork inheritance, silent reseed failure, and the upstream cause of every nonce-reuse attack.
cryptography cryptanalysis entropy csprng key-recovery hmac-drbg vm-snapshot nonce-reuse crypto-lab nist-sp-800-90a deterministic-random-bit-generator seed-provenance
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Updated
Oct 1, 2026 - TypeScript
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