车载自组织网络中,应用往往涉及敏感和机密的信息。我们运用一种基于位置的加密方法,该方法不仅能确保通信信息保密,也确保通信伙伴的身份和位置是经过验证的。位置认证意味着要解密一条信息,它的接收器必须要在解密区域,并且这一区域是由位置、时间和速度决定的。由此提出了一种实用的绘图函数,它可以把位置、时间和速度转化成一个独一无二的锁值。解密区域的确定有两个步骤:预测和更新。 In-vehicle ad hoc networks, applications often involve sensitive and confidential information. We use a location-based encryption method that not only ensures the confidentiality of communication information but also ensures that the identity and location of the communication partner is validated. Location authentication means that to decrypt a message, its receiver must be in the decrypted area, and this area is determined by location, time, and speed. As a result, a practical plotting function is proposed, which transforms position, time and speed into a unique lock value. Determine the decryption area has two steps: prediction and update.