Tiny dependency-free TypeScript implementation of the Bazeries cipher (digit-keyed transposition + keyed substitution). Powers the free decoder at textmachine.org
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Jun 23, 2026 - TypeScript
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classical-cipher
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Tiny dependency-free TypeScript classic ciphers — Caesar/ROT13/ROT47, Vigenère/Autokey/Beaufort, Atbash. Powers the free tools at textmachine.org
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Jun 23, 2026 - TypeScript
Browser-based one-time pad demo — perfect-secrecy encrypt/decrypt, then the two-time-pad break: XOR two ciphertexts under a reused key and crib-drag to recover both plaintexts. Real XOR over real bytes. No backends. No simulated math.
cryptography otp cryptanalysis cipher xor-cipher shannon one-time-pad classical-cipher stream-cipher crypto-lab perfect-secrecy crib-dragging two-time-pad key-reuse keystream-reuse
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Aug 10, 2026 - TypeScript
Browser-based Vigenère cipher demo — encrypt and decrypt with a repeating key, then recover the key length via Kasiski examination and index of coincidence and solve each column by frequency analysis. Real cryptanalysis. No backends. No simulated math.
cryptography cryptanalysis cipher vigenere frequency-analysis classical-cipher vigenere-cipher index-of-coincidence kasiski-examination polyalphabetic-cipher crypto-lab codebreaking historical-cryptography
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Aug 6, 2026 - TypeScript
Browser-based Enigma machine demo — full mechanical simulation of rotors, stepping with double-step, plugboard, and reflector, plus the crib-based Bombe break exploiting the no-letter-maps-to-itself flaw. Real wiring tables. No backends. No simulated math.
cryptography cryptanalysis cipher enigma turing enigma-machine classical-cipher wwii crypto-lab bombe codebreaking historical-cryptography rotor-machine
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Aug 10, 2026 - TypeScript
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