Stallings, William <br/><br/>
Cryptography and network security :  principles and practice / 
William Stallings 
 - 4th ed. 
 - Upper Saddle River, N.J. :  Pearson/Prentice Hall,  2006 
 - xvi, 680 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0131873164 9780132023221 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures<br/>Data encryption (Computer science)<br/>Coding theory<br/>Computer security