GnuPG  POP

         -
  GnuPG (GNU Privacy Guard  www. gnupg. org)  PGP (Pretty Good
Privacy  www. pgp. corn).  GNU Privacy Guard     -
  PGP    ,    
 1990- .  PGP   (Phil Zimmennan)   -
   (Public Key Infrastructure  PK.I);   
,         -
.     PGP       -
: PGP       (Certifica-
tion Authority  ).   PGP  PKI    
    .

 PGP  GnuPG    :2    -
,    - ,  ,   ,  -
   .    -,    
   (key signing).  - ,   -
    ,        -
   .      , -
    ,      .    -
    ,       
      .  
 -       ,   -
    .3     -
      ,     .

   PGP  ,   
     .    :

    PGP      ,  -
     ,   . PGP   -
   ,      
        .

   -      -
   RSA  IDEA,     PGP.   
  .      -
 PGP          ,
     PGP.

  .   "The GNU Privacy Handbook" no 
http://www.gnupgp.org/docs.html,   "Validating Other Keys on Your Public Keyring"
("  ").      "  
 GNU", http://www.inar.ru/~zwon/gph/bookl.html.

 :          
,       .  ,  -
        X,      .
       .       -
,             .   -
 -   (   ),   
         ,   
  .

938                                                         VII. 