Stallings, William. <br/><br/>
Cryptography and network security :  principles and practices / 
William Stallings. 
 - 4th ed. 
 - New Delhi:  Pearson Education,   2006. 
 - xvi, 680 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/>
<br/><br/><label>ISBN: </label>8177587749 
<br/><br/><label>Subjects--Topical Terms: </label>--Computer Science.
<br/><br/><label>Dewey Class. No.: </label>005.822  / STC