A data forwarding method with black hole attack detection

Abstract

The invention relates to a data forwarding method with a black hole attack detection function and belongs to the technical field of opportunistic network trust management. In order to solve the problems that existing black hole attack detection methods in an opportunistic network only detect attack behaviors of black hole nodes in a certain aspect and lack relatively comprehensive evaluation on the black hole nodes and detection results are affected by certain changes of the network easily, during black hole attack detection, trust conditions of the nodes in all aspects are required to be considered comprehensively, comprehensive judgments are made, and an opportunistic network trust management method for comprehensively judging node credibility according to node experience in the aspects of the accuracy degree of routing information provided by to-be-detected nodes, the reliability of historic behaviors of the nodes, the forwarding capacity of the nodes for messages and the like is further designed. With the adoption of the method, the reliability of the nodes is accurately judged, and detection results cannot be affected by other factors in the network easily, so that the delivery rate of the messages in the network is increased, and the performance of the network is enhanced.

Description

technical field [0001] The invention belongs to the technical field of opportunistic network trust management, and relates to a data forwarding method with black hole attack detection. Background technique [0002] With the popularity of a large number of low-cost smart devices with short-distance communication capabilities (such as mobile phones, PDAs, sensors, etc.), opportunistic networks have received extensive attention. As a special application of traditional wireless ad hoc networks, the relatively sparse distribution of nodes and frequent movement in opportunistic networks cause intermittent connections of nodes in the network, which makes the source node and destination node of the message lack of end-to-end connection. For the above reasons, messages in opportunistic networks are usually delivered in a store-carry-forward manner. In this way, the node does not need to establish an end-to-end path before forwarding data, but uses the opportunity of encountering oth...

AI Technical Summary

Problems solved by technology

In the above-mentioned literatures, some attack characteristics of black hole attacks are used to evaluate the behavior of nodes, but these methods only focus on one aspect of black hole attacks, and lack of comprehensive consideration

If only the data delivery rate of the node is used as the criterion for judging whether the node is a black hole node, the accuracy of the judgment result will be affected by the node cache space and the timeliness of message forwarding; and if only the routing information provided by the detected node Considering the accuracy of the node, the accuracy of the judgment result will be affected by the update delay of the node routing information. When the routing information of the node is too old, the accuracy of the judgment will be greatly reduced

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