#!/usr/bin/perl -w
use Crypt::OpenPGP;
use Crypt::OpenPGP::KeyRing;

my($keyfile, $email) = @ARGV;
my $ring = Crypt::OpenPGP::KeyRing->new(Filename => $keyfile);
my $pgp = Crypt::OpenPGP->new(PubRing => $ring);
my $crypt = $pgp->encrypt(
    Data => 'squeamish ossifrage',
    Recipients => [ $email ],
    Armour => 1,
    Cipher => 'CAST5',
);
defined($crypt) ? print $crypt : die $pgp->errstr;