Singh, Simon   <br/><br/>
The code book  the evolution of secrecy from Mary, Queen of Scots, to quantum cryptography 
by Simon Singh 
 - New York  Anchor  1999 
 - xxvii, 411 p. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780385495325   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ciphers<br/>Confidential communications<br/>Cryptography
<br/><br/><label>Dewey Class. No.: </label>652.8  / SIN