Vehicular ad-hoc network is one of the networks based on wireless sensor networks which, nowadays, plays a crucial role in life. Due to the autonomy of each vehicle, trust management can prevent many probable attacks. Every vehicle must be able to announce its trust; however, this announcement makes other vehicles able to locate that vehicle as well. Therefore, the present study is aimed at presenting a new method to preserve privacy and stop tracing the vehicle after trust announcement. In the proposed method, roadside unit, while changing the vehicle’s pseudonym, announces its trust with uncertainty. The trust announced by the roadside unit is not related to the previous trust, therefore, it would be impossible for other vehicles to recognize that vehicle. The simulation results revealed that it is impossible to recognize the vehicle through trust, also, the lack of the announced trust is trustworthy and capable of being used in calculations.

车载自组织网络是基于无线传感器网络的网络之一，如今在生活中起着至关重要的作用。由于每种车辆的自治性，信任管理可以防止许多可能的攻击。每辆车必须能够宣布其信任；但是，此公告使其他车辆也能够找到该车辆。因此，本研究旨在提出一种新的方法来保护隐私并在信任声明后停止跟踪车辆。在提出的方法中，路边单元在更改车辆的笔名的同时，不确定地宣布其信任。路边单位宣布的信任与先前的信任无关，因此，其他车辆将无法识别该车辆。