Codes and Ciphers: Clever Devices for Coding and Decoding to Cut Out and Make - Jenkins, Gerald; Bear, Magdalen
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Make this collection of seven ingenious paper gadgets which introduce and explain many of the concepts used in cipher machines. Decode the secret messages and then start to understand how cryptographers try to protect information from prying eyes.

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Produktbeschreibung
Make this collection of seven ingenious paper gadgets which introduce and explain many of the concepts used in cipher machines. Decode the secret messages and then start to understand how cryptographers try to protect information from prying eyes.