Codes and Ciphers

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Clever Devices for Coding and Decoding to Cut Out and Make Make this collection of seven ingenious paper gadgets which introduce and explain many of the concepts used in cipher mac hines. Decode the secret messages and then start to understand how cryptographers try to protect information from prying eyes. See also how cryptanalysts set about breaking such codes and ciphers. A substantial minibook explains the principles of codebreaking, and includes the story of the Enigma machine and Bletchley Park. Buy with Codes and Ciphers - the Wooden Book - and get 15% of the second book. Search codes and ciphers... Show more