GPT-6 Astra Solves 85-Year-Old Enigma Cipher in 10 Hours

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On-chain news broke when Bloomberg developer Carter Leffen used GPT-6 Astra to crack an 82-letter Enigma cipher from 1941. The message, listed as unsolved on CryptoCellar, was decrypted in 10 hours. Astra identified the repeated location "ROSENOW" and used it to test potential keys. The result: "Please inform of the route. I am in Rosenow. Please reply immediately by radio." Leffen led the effort, while Astra handled research, coding, and validation. This crypto news underscores AI’s growing role in historical decryption.
ME AI News, Dongcha Beating AI Brief: Carter Leffen, a product developer at Bloomberg, used GPT-6 Astra to crack a 1941 German Enigma cipher. He is not a cryptographer. The ciphertext, consisting of only 82 letters, had previously remained unbroken and was listed as such on the cryptographic history website CryptoCellar. Astra Extra High found the solution in approximately 10 hours. The key clue came from another telegram from the same day that had already been decrypted. Astra noticed the repeated appearance of the place name "ROSENOW" and hypothesized that the same word was hidden in the target ciphertext. It then developed an Enigma simulator and a search program, testing different keys in parallel, and validated results using the original telegram header and remaining text. The final decrypted message was simple: "Please advise your route of march. I am in Rosenow. Reply immediately by radio." However, this achievement was not solely due to Astra. Leffen defined the objective and guided the investigation, while Astra handled the bulk of research, coding, searching, and validation tasks. (Source: BlockBeats)
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