Data Forwarding Mechanism with Blackhole Attack Detection in Intermittently Connected Wireless Networks
YANG Jing①② ZHAO Yanyan①② WANG Ruyan①② GONG Lingling①② XIE Yi③ XIE Jinfeng③
①(Optical Communication and Network Key Laboratory of Chongqing, Chongqing 400065, China) ②(School of Telecommunication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China) ③(Chongqing Institute of Telecommunications, Chongqing 401336, China)
Intermittently connected wireless networks transmit data through opportunities caused by nodes’ movements. But malicious nodes in the network can attack and delete data by falsifying information about their routings, in order to impact the performance of networks. A data forwarding mechanism with blackhole attacking detection in intermittently connected wireless networks is proposed in this paper. By evaluating 4 trust properties include value of honesty, credit, indirect trust, and data forwarding rate, characteristics of attackers’ are summarized directly behaviors. And using the theory of rough set to decrease the rate of mistakes caused by indeterminate information, so that to determine the reliability of nodes accurately, and choose relay nodes reasonably. Results show that, the proposed mechanism can effectively find out attackers while enhancing the reliability of data transmission, and it also can defense some other non-cooperative nodes in the networks. Thus, the utilization of network resource is improved.
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