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The Man Who Broke Purple
Ronald Clark
出版A&C Black, 2011-10-28
主題Biography & Autobiography / MilitaryHistory / Wars & Conflicts / World War II / GeneralBiography & Autobiography / HistoricalHistory / Military / GeneralLanguage Arts & Disciplines / Library & Information Science / General
ISBN14482061979781448206193
URLhttp://books.google.com.hk/books?id=mhq-JhNISzkC&hl=&source=gbs_api
EBookSAMPLE
註釋Purple

The Code used by the Japanese prior to the bombing of Pearl Harbour . . . Did the Americans have advance information of the devastation to come? Had they cracked
Purple . . ?

Colonel William Friedman was 'the man who broke purple': this fascinating new biography of the world's greatest cryptographer reveals many new facts of the intriguing 'secret war' carried on by Intelligence departments in many countries.