Stallings, William. <br/><br/>
Cryptography and network security :  principles and practices / 
William Stallings. 
 - 3rd ed. 
 - New Delhi :  Pearson Education,  c2003. 
 - xiv, 681 pages :  illustrations ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>8178089025 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer networks--Security measures.<br/>Data encryption (Computer science).<br/>Coding theory.<br/>Computer security.
<br/><br/><label>Dewey Class. No.: </label>005.82 STA