Hershey, John E.  <br/><br/>
Cryptography demystified / 
John E. Hershey. 
 - x, 356 pages :  illustration ;   24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0071406387  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography.<br/>Cryptography--Problems, exercises, etc.
<br/><br/><label>Dewey Class. No.: </label>005.82  / H572