Forouzan, Behrouz A <br/><br/>
Cryptography and network security 

 - 2 
 -  New Delhi  Tata McGraw-Hill  2010 
 - xxiv, 702p  
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780070702080 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography<br/>Data encryption standard(DES)<br/>Digital signature<br/>Network security  Computer<br/>Symmetric-key cryptography