O que é e como funciona o Click'n'Load 2 do JDownloader? Eu explico

<?php

function base16Encode($arg){ 
    $ret=""; 
    for($i=0;$i<strlen($arg);$i  ){ 
        $tmp=ord(substr($arg,$i,1));     
        $ret.=dechex($tmp);  
} 
    return $ret; 
} 

$key="1234567890987654"; 
$transmitKey=base16Encode($key); 
$link="http://file.karelia.ru/34fxxx/jDownloader.dmgrn/http://rapidshare.com/files/000000000/jDownloader2.dmgrnhttp://www.mediafire.com/?xxxx/jDownloader3.dmg"; 
$cp = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', 'cbc', ''); 
@mcrypt_generic_init($cp, $key,$key); 
$enc = mcrypt_generic($cp, $link);    
mcrypt_generic_deinit($cp);  
mcrypt_module_close($cp); 
$crypted=base64_encode($enc); 
       
echo $crypted;
?>

<html> 
<FORM ACTION="http://127.0.0.1:9666/flash/addcrypted2" target="hidden" METHOD="POST">
   <INPUT TYPE="hidden" NAME="passwords" VALUE="myPassword">  
   <INPUT TYPE="hidden" NAME="source" VALUE="http://jdownloader.org/spielwiese">   
   <INPUT TYPE="hidden" NAME="jk" VALUE="function f(){ return '31323334353637383930393837363534';}"> 
   <INPUT TYPE="hidden" NAME="crypted" VALUE="CbWMwIS1Eu8j/IIqpG5Dj/IP6RScZrfRbsCC HsE14Awdp7r XLJfIiCLe yW4P9BbPyvddFNdw5kU2VdjcXJVGMv4gA8h ss0jKuBWcz3DRH93JsKNk6sa3Velr 7pouluGVg2OO0JIyhRW1x Zmny4oqHzRsQrZ8lJnJc3DwTgt9p9o0dKf4cRsRR2j9wpkp4WpBaMyvAR/Ky6JCavcg=="> 
   <INPUT TYPE="SUBMIT" NAME="submit" VALUE="Add Link to JDownloader"> 
</FORM>

<html>  
<head>  
    <script type="text/javascript">  
        function b64(){  
            var key = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 /='.split(''); 
            var e = document.getElementById('str');  
            var a = document.getElementById('res');  
            var str = e.value; var r = new Array(); var s = new Array();  
            for(i=0,x='';i<str.length;i  ){  
                if(str.charCodeAt(i).toString(2).length!=8) x = '0';  
                r.push(x str.charCodeAt(i).toString(2));  
            }  
            r = r.join('');  
            for(c=0,k=0;c<(Math.ceil(r.length/6));c  ){  
                k = parseInt(r.substr(c*6,6),2);  
                //alert(k);  
                if(isNaN(k)){  
                    s.push(key[64]);  
                } else {  
                    s.push(key[k]);  
                }  
            }  
            a.innerHTML = s.join('');  
        }  
    </script>  
</head>  
<body>  
<p>Man = TWFu</p>  
<p>  
    <input type="text" id="str" value="Man" />  
    <input type="button" onclick="b64()" value="convertir a b64" />  
</p>  
<p id="res"></p>  
</body>  
</html>