Crytography and Network Security 
by Behrouz A .Forouzan 
 - 2nd. 
 - New Delhi:  Tata McGraw Hill Education Pvt Ltd,  2010. 
 - xxi. 
<br/><br/><label>ISBN: </label>978-0-07-070208-0 
<br/><br/><label>Subjects--Index Terms: </label>Computer science Crptography and Network Security 
<br/><br/><label>Dewey Class. No.: </label>005.82