How to apply authentication while making BLE connection using Bluez5.60

Question

I'm trying to connect my Raspberry Pi 3B+ over BLE GATT Server using the Bluez5.6 library. I have successfully tested the BLE server application. Able to connect & communicate over the GATT services on the BLE client application over android.

I would like to apply the authentication pin while the connecting client application(Android App) to the BLE GATT server. I have tried to apply the different capabilities to the BLE agent.

like... DisplayOnly DisplayYesNo KeyboardOnly NoInputNoOutput KeyboardDisplay

Here is the source code for the main function.

def main():
    # global mainloop
    dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
    bus = dbus.SystemBus()
    adapter = find_adapter(bus)
    if not adapter:
        logger.error('main : BLE adapter not found')
        return

    #discovery functionality
    bus.add_signal_receiver(dis_interfaces_added, dbus_interface = "org.freedesktop.DBus.ObjectManager", signal_name = "InterfacesAdded")
    bus.add_signal_receiver(dis_properties_changed, dbus_interface = "org.freedesktop.DBus.Properties", signal_name = "PropertiesChanged", arg0 = "org.bluez.Device1", path_keyword = "path")

    om = dbus.Interface(bus.get_object("org.bluez", "/"), "org.freedesktop.DBus.ObjectManager")
    objects = om.GetManagedObjects()
    for path, interfaces in objects.items():
        if "org.bluez.Device1" in interfaces:
            devices[path] = interfaces["org.bluez.Device1"]

    capability = "NoInputNoOutput"
    logger.info('main : capability : (%s)' % capability)

    agent_path = "/test/agent"
    agent = Agent(bus, agent_path)

    service_manager = dbus.Interface(bus.get_object(BLUEZ_SERVICE_NAME, adapter), GATT_MANAGER_IFACE)
    ad_manager = dbus.Interface(bus.get_object(BLUEZ_SERVICE_NAME, adapter), LE_ADVERTISING_MANAGER_IFACE)

    app = ConfigBluetoothServiceApplication(bus)
    adv = ConfigBluetoothServiceAdvertisement(bus, 0)

    mainloop = GLib.MainLoop()

    agent_manager = dbus.Interface(bus.get_object(BLUEZ_SERVICE_NAME, "/org/bluez"), GATT_AGENT_IFACE)
    agent_manager.RegisterAgent(agent_path, capability)
    logger.info('main : main : Agent registered')
    agent_manager.RequestDefaultAgent(agent_path)

    service_manager.RegisterApplication(app.get_path(), {}, reply_handler=register_app_cb, error_handler=register_app_error_cb)
    ad_manager.RegisterAdvertisement(adv.get_path(), {}, reply_handler=register_ad_cb, error_handler=register_ad_error_cb)

    try:
        mainloop.run()
    except KeyboardInterrupt:
        adv.Release()
        mainloop.quit()


if __name__ == '__main__':
    main()

Will you please help me to know, What are the required configurations that have to be done to add the authentication for the BLE GATT Server?

How to apply authentication while making BLE connection using Bluez5.60

0 Answers0