Codes & Ciphers: Clever Devices for Coding and Decoding to Cut Out and Make - Couverture souple

Jenkins, Gerald; Bear, Magdalen

 
9781899618538: Codes & Ciphers: Clever Devices for Coding and Decoding to Cut Out and Make

Synopsis

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. 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.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.