pgg: Prerequisites

 
 2 Prerequisites
 ***************
 
 PGG requires at least one implementation of privacy guard system.  This
 document assumes that you have already obtained and installed them and
 that you are familiar with its basic functions.
 
    By default, PGG uses GnuPG.  If you are new to such a system, I
 recommend that you should look over the GNU Privacy Handbook (GPH) which
 is available at <http://www.gnupg.org/documentation/>.
 
    When using GnuPG, we recommend the use of the ‘gpg-agent’ program,
 which is distributed with versions 2.0 and later of GnuPG.  This is a
 daemon to manage private keys independently from any protocol, and
 provides the most secure way to input and cache your passphrases (See
 Caching passphrase).  By default, PGG will attempt to use ‘gpg-agent’
 if it is running.  See(gnupg)Invoking GPG-AGENT.
 
    PGG also supports Pretty Good Privacy version 2 or version 5.