Details of Alan Turing’s Voice Encryption System

Alan Turing's wartime papers have emerged, revealing details about Delilah, his classified voice-encryption system developed from nineteen forty-three to nineteen forty-five. The portable system was named after the biblical deceiver. Schneier on Security reports that these papers—known as the Bayley Papers and preserved by Bayley until his death in twenty twenty—sold at a London auction in November twenty twenty-three for nearly half a million dollars. The collection brings a lost chapter of cryptographic history back into the light.

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