Patel, Dhiren R. <br/><br/>
Information security :   theory and practice / 
By Dhiren R Patel. 
 - 1st ed. 
 - New Delhi :  PHI Learning Pvt Ltd ,  2008. 
 - xiv,298p. ;  PB  24.3 cm 
<br/><br/><label>ISBN: </label>9788120333512 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Classical encryption methods<br/>Information hiding : steganography<br/>Virus and malware
<br/><br/><label>Dewey Class. No.: </label>005.8   / PATD