character: Marian Rejewski
topic: Mathematical theories used to decrypt Enigma messages
grade: 9
subject: Computer Science
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character: Alan Turing
topic: Mathematical logic and decryption techniques
grade: 9
subject: Computer Science
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character: William Tutte
topic: Statistical analysis of ciphertexts
grade: 9
subject: Computer Science
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character: Claude Shannon
topic: Information theory and its impact on cryptography
grade: 9
subject: Computer Science
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