Singh, Simon. <br/><br/>
The code book :  the science of secrecy form ancient Agypt to quantum cryptography / 
Simon Singh. 
 - London :  Fourth Estate,  2000. 
 - xiii, 402p. :  ill., facsims., ports. ;  20 cm. 
<br/><br/> Originally published: 1999. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/> Simon Singh offers in this book a sweeping view of the subject of encryption as well as its more dramatic effects on the outcome of wars, monarchies, and individual lives. 
<br/><br/><label>ISBN: </label>9781857028898 (pbk.) :  £7.99 1857028899 (pbk.) :  £7.99 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography.<br/>Cryptography--History.<br/>Ciphers.<br/>Data encryption (Computer science)<br/>Confidential communications.