Cryptological Mathematics (Mathematical Association of America Textbooks)
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Cryptological Mathematics (00) by Lewand, Robert Edward [Paperback (2000)]
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Square-Free Factorizations. Some Cryptological and Other Mathematical Aspects: Algebra, Number Theory, Cryptology, Economy
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The First Enigma Codebreaker: Marian Rejewski Who Passed the Baton to Alan Turing
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The cryptographic mathematics of Enigma
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