From: Sameer <sameer@soda.berkeley.edu>
Date: Wed, 20 Apr 94 18:55:08 PDT
To: unicorn@access.digex.net (Black Unicorn)
Subject: Re: remailers
In-Reply-To: <199404210139.AA06941@access1.digex.net>
Message-ID: <m0ptnzT-00010yC@infinity.hip.berkeley.edu>
MIME-Version: 1.0
Content-Type: text


Black Unicorn spake:
> 
> 
> 
> For some reason I have not been able to get any of the remailers to
> work with PGP encryption.
> 
> In addition, the ping figures at the end of the soda finger file
> don't seem to have changed since I first looked at them some
> days ago.... is this just me?
> 

	No, the ping-thing is actually turned off. ;-(.
	Should probably start that up once again..

> Is anyone out there chaining with PGP supporting remailers?

	I wrote a perl script which does chaining.. it follows

#!/usr/bin/perl
$home = $ENV{'HOME'};
$pgpdir = $home . "/.psuedo";
$pgpexe = "PGPPATH=$pgpdir pgp " ;
$tmp = "/tmp/out.$$" ;
$oldfile = "/tmp/oldfile.$$" ;
@REMAILERS = ('hal@alumni.caltech.edu',
              'remail@infinity.hip.berkeley.edu',
              'hfinney@shell.portal.com',
              'ebrandt@jarthur.claremont.edu',
              'catalyst@netcom.com');




$option = $ARGV[0];
shift;
unshift(ARGV, '-');

&createapath;

sub createapath
{
    print STDERR "Create a path--remailer list:\n";
    $count = 0;
    do
    {
        do
        {
            $num = 0;
            foreach $remailer (@REMAILERS)
            {
                $num++;
                print STDERR $num . ")" . $remailer . "\n" ;
            }
            print STDERR "Choose the next site: (or 0 to end hops) ";
            while(<>)
            {
                $choice = $_ - 1;
                last;
            }
        }
        until ( $choice < $num && $choice > -2 );
        $HOP[$count] = $REMAILERS[$choice] if $choice != -1;
        $count++;
    }
    until ( $choice == -1 ) ;

    $count--;
    print STDERR "Choose the destination: ";
    while(<>)
    {
        $HOP[$count] = $_;
        last;
    }

    while ( $count > 0 )
    {
        open(CRYPT, "| $pgpexe -eaf $HOP[$count-1] > $tmp");
        print CRYPT "::\nAnon-To: $HOP[$count]\n\n";
        if ( open(OLDER, $oldfile) )
        {
            print CRYPT <OLDER>;
            close OLDER;
        }
        close CRYPT;
        open (OLDER, ">" . $oldfile);
        open (CRYPTED, $tmp);
        print OLDER "::\nEncrypted: PGP\n\n";
        print OLDER <CRYPTED>;
        close CRYPTED;
        close OLDER;
        $count--;
    }
    open (FILE,">" . $option);
    print FILE "To: $HOP[0]\n\n";
    open(DONE, $oldfile);
    print FILE <DONE>;
    close DONE;
    unlink($tmp);
    unlink($oldfile);
}