Stallings, W.  . <br/><br/>
Crytography and network security principles and practics /  
by William Stallings. 
 - Delhi :   Pearson Education(Singapore) Pte. Ltd. ,   2003 
 - 685p :  
<br/><br/><label>ISBN: </label>81-7808-902-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science
<br/><br/><label>Dewey Class. No.: </label>BV  / P3