Stallings, William. <br/><br/>
Cryptography and network security :  principles and practice / 
William Stallings. 
 - 7th edition. global edition. 
 - Boston :  Prentice Hall,  2017. 
 - 766 pages :  illustration ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references (p. 744-752.) 
<br/><br/><label>ISBN: </label>9781292158587 1292158581 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Criptografía.<br/>Redes de ordenadores.<br/>Seguridad informática.