Stallings, William <br/><br/>
Cryptography and network security  Principles and practice 
By William Stallings 
 - 2nd 
 - New Delhi  Pearson Education  2000 
 - xviii, 569p. 
<br/><br/><label>ISBN: </label>9814035890 
<br/><br/><label>Dewey Class. No.: </label>005.82  / N99;1