48     var $lib = null;  variable in Auth_OpenID_DiffieHellman
51                                        $private = null, $lib = null)  argument
53         if ($lib === null) {
54             $this->lib = Auth_OpenID_getMathLib();
56             $this->lib = $lib;
60             $this->mod = $this->lib->init(Auth_OpenID_getDefaultMod());
66             $this->gen = $this->lib->init(Auth_OpenID_getDefaultGen());
72             $r = $this->lib->rand($this->mod);
73             $this->private = $this->lib->add($r, 1);
78         $this->public = $this->lib->powmod($this->gen, $this->private,
84         return $this->lib->powmod($composite, $this->private, $this->mod);
101         $dh_shared_str = $this->lib->longToBinary($dh_shared);