Stallings, William, <br/><br/>
Cryptography and network security 
by William Stallings 
 - 5th. 
 - New Delhi:  Pearson,  2011. 
 - 743p:  25cm. 
<br/><br/><label>ISBN: </label>978-81-317-6166-3 
<br/><br/><label>Dewey Class. No.: </label>005.82