$key_batch =    "Key-type: DSA\n
                     Key-Length: 2048\n
                     Subkey-Type: ELG-E\n
                     Subkey-Length: 2048\n
                     Name-Real: ".$_POST['name']."\n
                     Name-Email: $user@telerad-mv.de\n
                     Expire-Date: 0\n
                     Passphrase: $encrpw\n
                     %commit\nEOF";
            $output = array();

            $proc=proc_open("cat",array(array("pipe","r"),array("pipe","w"),array("pipe","w")),$pipes);
            if(is_resource($proc)){
                fwrite($pipes[0], $key_batch);
                fclose($pipes[0]);
                echo stream_get_contents($pipes[1]);
                fclose($pipes[1]);
                $return_value = proc_close($proc);
            }