Garfinkel Simson <br/><br/>
PGP Pretty Good Privacy 

 - USA  O'Reilly & Associates  1995 
 - xxxiii,393p. 
<br/><br/><label>ISBN: </label>1565920988 
<br/><br/><label>Subjects--Topical Terms: </label><br/>unix system<br/>encrypted email<br/>digital signature
<br/><br/><label>Dewey Class. No.: </label>5.82