摘要
在无线传感器网络中,确定节点或事件发生的位置对其监测活动至关重要。然而,学者们提出的大部分定位方案都是在理想的环境中实施,极易受到入侵者的恶意攻击,使得定位系统瘫痪。在非测距定位算法DV-hop的基础上,研究了一种可抵御虫洞攻击的安全定位方案。利用简单的三角不等式规则检测信标节点的合法性,利用邻节点间的RTT属性值检测虫洞链的存在,通过修正节点间的跳数实现未知节点的安全定位。仿真实验表明,提出的安全方案可以有效检测出恶意信标节点,并且能够极大削弱虫洞攻击对定位结果所造成的影响。
In Wireless Sensor Networks（WSNs）, it’s crucial to determine the position of the nodes or events for its moni-toring activities. However, the location systems proposed by some researchers are vulnerable to malicious attacks which can compromise the location function easily. Based on the research of the range-free location algorithm DV-hop, this paper researches a safe location scheme against the wormhole attack. It uses simple trigonometrical inequalities rules to check the legitimacy of the beacon nodes, then uses the RTT attribute of two adjacent nodes to check whether the wormhole links exist, through correcting the hops between the nodes to realize the secure location of the unknown nodes. Simulation results show that this scheme can recognize the illegal beacon nodes effectively, and weaken the influence made by wormhole attacks.
出处
《计算机工程与应用》
CSCD
2014年第13期121-126,141,共7页
Computer Engineering and Applications
基金
国家自然科学基金(No.61103223)
江苏省自然科学基金重点研究专项(No.BK2011003)
