False data on-the-way filtering method applied to wireless sensor network

The invention provides a false data on-the-way filtering method applied to a wireless sensor network, and belongs to the technical field of wireless sensor network safety. According to the false data on-the-way filtering method provided by the invention, technologies such as message verification code verification and position rationality verification are adopted, and an authentication information authenticity verification technology based on multicast routing is also added, so that the on-the-way filtering probability and filtering efficiency of false datagrams can be improved. Meanwhile, the network energy consumption is saved. Besides, the method can also filter out replayed datagrams in one hop no matter whether the current network adopts a fixed route or a dynamic route, so that the safety of the network is further improved. 本发明提供了一种应用于无线传感器网络的虚假数据途中过滤方法，属于无线传感器网络安全技术领域。提出的虚假数据途中过滤方法除了采用消息验证码验证和位置合理性验证等技术，还增加了基于多播路由的认证信息真实性验证技术，可提高虚假数据报的途中过滤概率和过滤效率，同时节约网络能耗。另外，该方法还可以在一跳之内过滤掉重放的数据报，不论当前网络采用的是固定路由还是动态路由，从而进