Secret Writings And Ciphers : Kessinger Publishing : 9781161580303 : 1161580301 : 22 May 2010 : Secret Writings and Ciphers is a comprehensive guide to the art of cryptography and the history of secret writing. Written by Isabel Cooper-Oakley, a renowned expert in the field, the book covers a wide range of topics related to cryptography, including the history of codes and ciphers, the principles of encryption and decryption, and the various techniques used to create and break codes.The book begins with an overview of the history of secret writing, from ancient times to the present day. It then delves into the principles of cryptography, explaining how codes and ciphers work and the different types of codes and ciphers that have been used throughout history.The book also covers a variety of techniques used to create and break codes, including frequency analysis, codebooks, and the use of computers. It includes numerous examples of famous codes and ciphers, such as the Enigma machine use