Stallings, William. <br/><br/>
Cryptography and network security /  principles and practice 
William Stallings 
 - 3rd ed. 
 - Upper Saddle River, N.J.  Prentice Hall  2003 
 - xiv, 681p.  ill.  24cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0130914290  RM417.12 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coding theory--Computer security<br/>Computer networks--Security measures<br/>Data encryption (Computer science)