The Secret in Building 26: The Untold Story of America's Ultra War Against the U-boat Enigma Codes Review

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The Secret in Building 26: The Untold Story of America's Ultra War Against the U-boat Enigma Codes ReviewUntil now too little has been said about the contributions of Americans towards decrypting either German ?Enigma? or Japanese ?Purple? ciphers. From 1941 until the end of the war the Americans and British collaborated ? in a sometimes prickly relationship ? with the desperate task of deciphering the messages sent between German U-boats in the North Atlantic and Grossadmiral Karl D?nitz, commander-in-chief of the German Navy. Fortunately for the allies, the admiral liked to keep in close touch with his fleet of U-boats, providing a steady stream of messages with clues to the U-boats? position and intentions.
In 1939, with Germany threatening to invade Poland, the Polish had turned over to their British and French allies all the work they had done during the previous nine years on the ciphers generated by a machine called an ?Enigma? that the Germans used to send secret messages. The Polish artifacts included a mechanical device called a ?bomba kryptologiczna?, or ?bombe? in French. In response, the British set up a Code and Cypher School (note the British spelling of cipher) at Bletchley Park. That story has been well told many times and the contributions of at least some of the men and women who served there ? most notably the mathematician Alan Turing ? have been publicly recognized.
In the United States much of the code breaking was done in Dayton, Ohio, by NCR in cooperation with the US Navy. The Bombes used in the US were designed and constructed in Building 26 under the leadership of engineer Joe Desch. Desch was one of many people who have never received proper acknowledgement for their work during the World War II because of the tight security surrounding their duties. Putting together their story has been a labor of love for Dayton reporter, Jim DeBrosse, and security historian Colin Burke. Be warned that there is very little about the technical aspects of Enigma encryption in ?The Secret in Building 26?, but there is a wealth of information about the men and women who worked ? often for years of long, hard days and under tremendous strain ? for the love of their country.The Secret in Building 26: The Untold Story of America's Ultra War Against the U-boat Enigma Codes Overview

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Codes, Ciphers and Other Cryptic and Clandestine Communication: 400 Ways to Send Secret Messages from Hieroglyphs to the Internet Review

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Codes, Ciphers and Other Cryptic and Clandestine Communication: 400 Ways to Send Secret Messages from Hieroglyphs to the Internet ReviewWrixon, Fred B. *Codes, Ciphers & Other Cryptic & Clandestine Communication.* Dimensions: 23.7cm x 21cm x 5.2cm. Drawings, illustrations, no photographs, table of contents, four page index, appendix, and glossary, and bibliography). The book is 704 pages in length with a reading/comprehension level of about age14 thru adult. The bibliography is extensive but contains few new sources of information.
The author utilizes David Kahn's book: The Codebreakers, for much of the historical information on Cryptology. The book opens with an excellent discussion that traces cryptology from ancient origins to the present. Most of the book is devoted to classical pencil & paper ciphers and codes. His discussion of elementary transposition & substitution ciphers is good. He also describes the one-time pad used by Soviet espionage agents. There is a brief incomplete discussion of "Cryptophotographic Techniques" that uses latent imaging, gelatin hardening and bleaching of photographs to conceal secret messages. Near the back of the book, there is a section devoted to quizzes & answers to help everyone understand the various chapters. The book closes with biographical chronologies of individuals that have contributed to the development of cryptology: Leon Battista Alberti to Herbert O. Yardley.
I did notice, however, one error in the chapter on Steganography under the subtitle invisible inks. The author, on page 476, states that the handkerchief, carried by Nazi saboteur George Dasch, contained information written in secret ink that was developed by the FBI using ammonia vapor. That much is true. But the author states incorrectly that the secret ink message was written with copper sulphate. In fact, the secret ink message on the handkerchief was written with an alcoholic solution of phenolphthalein. The phantom writing appeared red or pink in color when subjected to ammonium vapor.
The author writes in a direct lucid style that reaches a wide audience. There are some mistakes, but most of them are of little significance to the over all thrust of the book. It is an excellent book for the novice trying to understand cryptology.Codes, Ciphers and Other Cryptic and Clandestine Communication: 400 Ways to Send Secret Messages from Hieroglyphs to the Internet Overview

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