Stallings,William <br/><br/>
Cryptography and Network Security : Principles and Practice 

 - 7th ed 
 - CHENNAI  PEARSON  2017 
 - 766p 
<br/><br/><label>ISBN: </label>9789332585225 
<br/><br/><label>Dewey Class. No.: </label>005.82 STA