Garfinkel, Simson,  <br/><br/>
PGP :   Pretty good privacy 

 - xxxiii, 393 pages :   illustrations ;   23 cm 
<br/><br/><label>ISBN: </label>1565920988 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cryptography
<br/><br/><label>Dewey Class. No.: </label>652.8