Stallings W. <br/><br/>
Cryptography and network security 

 - 7th Ed. 
 - Delhi  Pearson  2019 
 - 766p. 
<br/><br/><label>ISBN: </label>9789332585225 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COMPUTER
<br/><br/><label>Dewey Class. No.: </label>5.8