Do you want to learn to keep the secrets, create in cipher messages and surprise class-mates cognitions in cryptography - science about creation, use and breaking of codes? In this book you are waited by an acquaintance with secret knowledge and abilities that is accessible only select - to the spies, secret agents, scientists. Together we will learn to encode reports, using the different methods of enciphering, to unravel already existent secret messages, to do encipherings machines and even to create the original codes and riddles!you have unique possibility to become acquainted with the real world of secret agents and special services, in fact all methods the encipherements described in a book are used until now! And suddenly will you be able to create the unique method of enciphering?