Write-up and Go solver for the Estonian Cybercrime Unit (C3) recruitment CTF: a book cipher keyed to The Hacker Manifesto
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Sep 21, 2026 - Go
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book-cipher
Here are 7 public repositories matching this topic...
Nobody has cracked Beale ciphers B1 and B3, so we modelled how you'd fake one instead. Both match the forgery within 1σ, and real English fits worse. Bayes factors for hoax: roughly 8 to 1,800 (B1) and 150 to 5,400 (B3).
cryptography cryptanalysis cipher statistical-analysis monte-carlo-simulation bayesian-statistics treasure-hunt forensic-analysis classical-cipher hoax classical-cryptography benfords-law bayes-factor codebreaking book-cipher historical-ciphers beale-ciphers beale-cipher declaration-of-independence beale-treasure
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Nov 8, 2026 - Python
Research notes and a tested book-cipher solver for the unsolved 1980s Decipher ($100,000) and Money Hunt ($1,000,000) prize puzzles. 61 public-domain key texts eliminated; a path to test your own books.
python cryptography puzzle cipher treasure-hunt jigsaw-puzzle decipher book-cipher unsolved-mystery money-hunt karen-puzzles armchair-treasure-hunt
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Nov 8, 2026 - Python
Compression-resistant encrypted steganography with book cipher
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Mar 6, 2026 - Python
Reproducible cryptanalysis: a statistical test arguing Beale Cipher #1 is a hoax (p<5e-6), the 1885 Beale #2 solve, and a from-scratch reproduction of the 2020 Zodiac Z340 break.
python cryptography cryptanalysis ciphers zodiac-killer book-cipher beale-cipher homophonic-substitution
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May 29, 2026 - Python
Book cipher toolkit with Shamir secret sharing, audit trail, voice word map and TUI — pure Python stdlib, 10k+ lines, 539 tests
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Aug 16, 2026 - Python
Beale Cipher Personal Project alongside Homework and from Salisbury University's Cryptography Course Math447
cryptography chi-square-test miller-rabin-test kolmogorov-smirnov-test book-cipher serial-correlation-test
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Feb 14, 2025 - C++
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