kod spusteny na kazdej stranke

		public function validateToken($session = false){
			if(!$session)
				$session = $this->userdata;

			if(get_cookie("ms_user_token")){
				$data['securitytoken'] = get_cookie("ms_user_token");

				$memory = $this->sqlValidateToken($data);
				if($memory[0]){
					if($this->hashToken($memory[0]->salt, $memory[0]->securitytoken) == get_cookie("ms_hashed_token")){
						//if(!$this->CI->session->get_userdata('logged_in')){
							$this->CI->session->sess_expiration = 60*60*24*7;
							$this->CI->session->set_userdata('logged_in', $memory[0]);
						//}
					}else{
						$this->logout();
					}
				}else{
					$this->logout();
				}

			}else{
				$this->CI->session->unset_userdata('logged_in');
				@session_destroy();
				delete_cookie('ms_user_token');
				delete_cookie('ms_hashed_token');
			}
		}

login ...
					$securitytoken = $this->customfunc->generateRandomString(16);
					$salt = $this->customfunc->generateRandomString(16);

					$hash = $this->User_model->hashToken($salt, $securitytoken);

					$tcookie = array(
							'name'   => 'ms_user_token',
							'value'  => $securitytoken,
							'expire' => time()+86500,
							//'domain' => '',
							'path'   => '/',
							'prefix' => 'ms_',
							);

					$scookie = array(
							'name'   => 'hashed_token',
							'value'  => $hash,
							'expire' => time()+86500,
							//'domain' => '',
							'path'   => '/',
							'prefix' => 'ms_',
							);
					set_cookie($tcookie);
					set_cookie($scookie);

					$this->session->sess_expiration = 60*60*24*7;
					$this->session->set_userdata('logged_in', $sess_array);//nejake data

		public function hashToken($salt, $securitytoken){
			return hash("sha256", $salt.$_SERVER['REMOTE_ADDR'].$securitytoken.$config["globalSalt"]);
		}