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无线自组网(Ad hoc网络)是由一组带有无线收发装置的移动终端组成的一个多跳的临时性自治系统,移动终端兼备路由器和主机两种功能,它可以通过无线连接构成任意的网络拓扑,独立工作,也可以与Internet或蜂窝无线网络连接。由于不依赖固定基础设施,其应用十分灵活方便,但相比于传统的网络,无线自组网更易受到各种安全威胁和攻击。因此,安全性是决定无线自组网能否得到广泛应用的一项关键因素。1.无线自组网面临的安全问题无线自组网的安全目标与传统网络中的安全目标基本一致,但是两者却有着不同的内涵。一方面,无线自组网的特点使得网络容易受到各种安全威胁和攻击,包括信息干扰和窃听、数据篡改和重发、伪造
Wireless ad hoc network (Ad hoc network) is a multi-hop temporary autonomous system composed of a group of mobile terminals with wireless transceivers. The mobile terminal combines both functions of a router and a host, and can be formed by wireless connection to any Network topology, work independently, but also with the Internet or cellular wireless network connection. Because it does not rely on fixed infrastructure, its application is very flexible and convenient, but compared to the traditional network, wireless ad hoc network more vulnerable to various security threats and attacks. Therefore, security is a key factor that determines whether wireless ad hoc networks can be widely used. 1. Wireless ad hoc network security problems Wireless ad hoc network security objectives and the traditional network security objectives are basically the same, but both have different connotations. On the one hand, the characteristics of wireless ad hoc networks make the network susceptible to various security threats and attacks, including information interference and eavesdropping, data tampering and retransmission, forgery