基于多虚拟环的WSN源位置隐私保护算法

Source Location Privacy Protection Algorithm for WSN Based on Multi-Virtual Ring

为了保护无线传感器网络中源节点位置隐私,本文提出了基于多虚拟环的无线传感器网络源位置隐私保护算法(SLPMVR)。由源节点和基站节点分别生成以自身为圆心的虚拟环,在不同阶段可以通过虚拟环选择幻影节点;源节点将数据包按照最短路由策略转发至源幻影节点,源幻影节点采用基于角度的概率路由策略将接收到的数据包转发至基站幻影节点,以减少重合路径的产生;基站幻影节点选择环内路由转发方向和随机转发步数,并有条件地挑选邻居列表中节点作为下一跳,定向随机路由结束后将数据包通过最短路由的方式转发至基站,提高路由路径多样性,增加攻击者的反向追踪难度。仿真结果表明,该算法总体上提高了网络的安全周期,具有很好的隐私保护性能。

In order to protect the location privacy of the source node in the wireless sensor network,the source location privacy protection algorithm(SLPMVR)of the wireless sensor network based on multiple virtual rings is proposed.The source node and the base station node generate virtual rings with themselves as the center of the circle,and select the phantom nodes for data forwarding in their respective virtual rings.The source node forwards the packets to the source phantom node according to the shortest routing policy,and the source phantom node using an angle-based probability routing policy forwards the received packets to the base station phantom node,to reduce the occurrence of overlapping paths.The base station phantom node selects the forwarding direction of the route in the ring and the random forwarding step,and conditionally selects the node in the neighbor list as the next hop,and forwards the packet to the base station after the random step number is zeroed,thereby improving the diversity of the routing path and increasing the difficulty of backtracking by the attacker.Simulation results show that the algorithm generally improves the security cycle of the network and has good privacy protection performance.