The first edition of this award-winning book attracted a wide
audience. This second edition is both a joy to read and a useful
classroom tool. Unlike traditional textbooks, it requires no
mathematical prerequisites and can be read around the mathematics
presented. If used as a textbook, the mathematics can be
prioritized, with a book both students and instructors will enjoy
reading. Secret History: The Story of Cryptology, Second Edition
incorporates new material concerning various eras in the long
history of cryptology. Much has happened concerning the political
aspects of cryptology since the first edition appeared. The still
unfolding story is updated here. The first edition of this book
contained chapters devoted to the cracking of German and Japanese
systems during World War II. Now the other side of this cipher war
is also told, that is, how the United States was able to come up
with systems that were never broken. The text is in two parts. Part
I presents classic cryptology from ancient times through World War
II. Part II examines modern computer cryptology. With numerous
real-world examples and extensive references, the author skillfully
balances the history with mathematical details, providing readers
with a sound foundation in this dynamic field. FEATURES Presents a
chronological development of key concepts Includes the Vigenere
cipher, the one-time pad, transposition ciphers, Jefferson's wheel
cipher, Playfair cipher, ADFGX, matrix encryption, Enigma, Purple,
and other classic methods Looks at the work of Claude Shannon, the
origin of the National Security Agency, elliptic curve
cryptography, the Data Encryption Standard, the Advanced Encryption
Standard, public-key cryptography, and many other topics New
chapters detail SIGABA and SIGSALY, successful systems used during
World War II for text and speech, respectively Includes quantum
cryptography and the impact of quantum computers
General
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