🔓 Vigenère cryptanalysis algorithm based on the Kasiski method.
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Updated
Apr 13, 2020 - Python
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kasiski
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Automated cryptanalysis of the Vigenère cipher using Kasiski examination, Index of Coincidence (IC), and Mutual Index of Coincidence (MIC). Recovers keys (length ≤ 5) and decrypts ciphertexts into plaintext. Implemented in Python for cryptography and cybersecurity applications.
cryptanalysis frequency-analysis network-security vigenere-cipher index-of-coincidence classical-cryptography kasiski frequency-analysis-simulator
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Aug 23, 2025 - Python
Browser-based cryptographic history demo — from Atbash in Jeremiah 25:26 (~600 BCE) to AES-256-GCM (2001 CE). Every cipher, every fatal flaw, every lesson that built the next one.
cryptography atbash aes-gcm webcrypto one-time-pad frequency-analysis caesar-cipher vigenere-cipher crypto-lab kasiski historical-ciphers
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Apr 6, 2026
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