The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet AMERICAN GOVERNMENT and union men in a

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The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet AMERICAN GOVERNMENT and union men in aAuthor Contributor(s): Kahn, David Publisher: Scribner Date: 12 5 1996 Binding: Hardcover Condition: NEW The magnificent, unrivaled history of codes and ciphershow they're made, how they're broken, and the many and fascinating roles they've played since the dawn of civilization in war, business, diplomacy, and espionageupdated with a new chapter on computer cryptography and the Ultra secret. Man has created codes to keep secrets and has broken codes