无线传感器网络的安全地理位置跨层协议

许多无线传感器网络(WSN)协议设计过程中,没有考虑到安全问题。提出一种安全地理位置跨层协议(Secure Geo-graphic Integrated Protocol,SGIP)。在安全协议的设计过程中,同时考虑了安全引导过程。首先改进了基于位置的密钥引导方案,使其不但充分利用地理信息,而且可以同时为广播包和单播包加密,并且转发区域内所有节点都与源节点有共享密钥。在此基础上,采用基于MAC层竞争的地理路由选择算法,并对不同数据包采用不同的加密方式,设计了安全的路由/MAC跨层协议。分析表明协议具有很好的安全性能,并且开销较小。

A Secure Geographic Integrated Protocol for Wireless Sensor Networks

Many protocols for wireless sensor networks(WSN) are not designed with security as a goal.A secure geographic integrated protocol(SGIP) is presented.In the process of design,key distribution and secure protocol are both considered.First a location-based key distribution scheme is extended so that it not only takes advantage of the geographic features but also can encrypt broadcast packets as well as unicast packets,and a node can establish direct keys with all nodes in forwarding areas.A routing algorithm based on the contention of MAC layer is adopted,and a secure integrated protocol is designed.Different encryption strategies are adopted for the four kinds of messages.Analysis shows that the protocol can defend against many routing attacks with low cost.