Schneier, Bruce,      frey50        <br/><br/>
Applied cryptography : 

 -  Wiley,  c1994 
<br/><br/><label>ISBN: </label>0471597562 (p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer security.<br/>Telecommunicatio - Security measures.<br/>Cryptography.