Codes and Ciphers : Julius Caesar, the Enigma, and the Internet, Paperback by...

Codes and Ciphers : Julius Caesar, the Enigma, and the Internet, Paperback by Churchhouse, R. F., ISBN 0521008905, ISBN-13 9780521008907, Like New Used, Free shipping in the US Convinced that there is a middle way between cods that ignore mathematics altogether and those that assume the full arsenal of graduate-level mathematics, Churchhouse (computing mathematics, Cardiff U., Wales) introduces general readers to a number of codes and ciphers, starting with the ancient and elementary, and progressing through some wartime cipher machines to systems currently in commercial use today. Readers looking for the mathematics will find it in the appendix. Problems are included for class use or self-evaluation. Annotation c. Book News, Inc., Portland, OR ()

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