Stallings, William. <br/><br/>
Cryptography and network security :  principles and practice / 

 - NA,  Doling Kindesley,  c2012. 
 - 743 p. ;  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>9788131761663 
<br/><br/><label>LC Class. No.: </label>005.82 
<br/><br/><label>Dewey Class. No.: </label>005.82