Advanced Military Cryptography (Cryptographic Series , No 8) pdf epub mobi txt 电子书下载 2025

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出版者:Aegean Park Press

作者:William F. Friedman

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页数:0

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出版时间:1996-04

价格:USD 14.80

装帧:Paperback

isbn号码:9780894120114

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Transposition and substitution systems are discussed on a general higher level. Attention is likewise devoted to combined substitution and transposition methods. Cryptographs and their limitations are described. Code systems are treated with emphasis on enciphered code systems. A section of the text is devoted to cipher machines, with discussion as to their importance, types of machines, and advantages and disadvantages of cipher machines.