For those curious about Alan Turing, breaking Nazi Germany's Enigma Code, or The Imitation Game starring Benedict Cumberbatch and Keira Knightley, Simon Singh's The Code Book for Young People has all you need to know about the science of secrecy. Cryptography: the encoding and decoding of private information. And it is historyas most fascinating story of intrigue and cunning. From Julius Caesar and his Caesar Cipher to the code used by Mary Queen of Scots and her conspiracy to the use of the Engima machine during the Second World War, Simon Singh follows the evolution of secret writing. Accessible, compelling, and timely, this international bestseller, now adapted for young people, is sure to make readers see the pastaand the futureain a whole new way. From the Hardcover edition.We can think of the act of turning on a light switch as a function, because it turns an ordinary lightbulb into an illuminated one. This function is twoway because if a switch is turned on, it is easy enough to turn it off and return the lightbulb to its original state. However, Diffie ... As the name suggests, a one-way function is easy to do but very difficult to undo. In other ... To work out 2 + 3, we start at 2 and move around three places to reach 5, which is the same answer as in normal arithmetic.
|Title||:||The Code Book for Young People|
|Publisher||:||Delacorte Books for Young Readers - 2002-05-14|