The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet


  • ISBN-10: 0684831309
  • ISBN-13: 978-0684831305

  • Few false ideas have more firmly gripped the minds of so many intelligent men than the one that, if they just tried, they could invent a cipher that no one could break," writes David Kahn in this massive (almost 1,200 pages) volume. Most of The Codebreakers focuses on the 20th century, especially World War II. But its reach is long. Kahn traces cryptology’s origins to the advent of writing. It seems that as soon as people learned how to record their thoughts, they tried to figure out ways of keeping them hidden. Kahn covers everything from the theory of ciphering to the search for "messages" from outer space. He concludes with a few thoughts about encryption on the Internet.

    This book is not intended to teach the reader how to design or cryptanalyze codes and ciphers; it is a history book, and a really great one. However, the reader should be aware of a couple of things that may not be apparent.


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    Manoj Venkat said...

    The file is not available anymore. It says "File not found". Could you please do something about it.?

    Tarique Aziz said...


    When trying to download the file, it says:


    The file could not be found. Please check the download link.

    I would appreciate if you can send the correct link or the file to my email:


    len said...

    ei galera, aqui estão outros links disponíveis para vocês baixarem este livro brilhante (tudo, no website ""):

    Espero que aproveitem ... !!!!!!!!!!


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