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AI Used to Decrypt Medieval Ciphers

Researchers are deploying machine learning algorithms to break historical pencil-and-paper ciphers used in medieval plots, love letters, and diplomatic correspondence. The AI-driven decryption is unlocking secrets from centuries-old documents that have resisted traditional codebreaking methods.

read1 min publishedJun 3, 2026

AI Used to Decrypt Medieval Ciphers #

Researchers are using machine learning algorithms to decrypt historical pencil-and-paper ciphers.

Researchers are using machine learning algorithms to decrypt historical pencil-and-paper ciphers.

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Sidebar photo of Bruce Schneier by Joe MacInnis.

source & further reading
schneier.com — original article The Intersection of Encryption and AI Vulnerability Disclosure in the Age of AI Friday Squid Blogging: Regulating Squid Fishing in the South Pacific
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