A node trust management method for two-hop multi-replica ad hoc networks

Abstract

The invention relates to a node trust management method for a two-hop multi-replica ad hoc network, which relates to the technical field of network security. The invention carries out weighting treatment on the direct trust value dynamically monitored by the source node and the indirect trust value dynamically fed back by the neighboring node, solves the dynamic evaluation problem of the trust degree of the node in the two-hop multi-replica ad hoc network, and measures the malicious behavior of the node more comprehensively and objectively. The invention utilizes the forward utility value to stimulate the reliable behavior of the relay node, and utilizes the reverse utility value to punish the malicious behavior of the relay node, which can restrict the ad hoc network node to actively participate in the routing and forwarding of two-hop multiple copies, and effectively promotes the improvement of the network security degree.

Description

technical field [0001] The invention relates to the technical field of network security, in particular to a node trust management method for a two-hop multi-copy ad hoc network. Background technique [0002] Ad hoc network is a dynamic autonomous system with no center (i.e. no base station, no agent, etc.) formed by a group of network devices with both terminal and routing functions through wireless communication links. Each node in the network can be used as a source node at the same time. , relay nodes or destination nodes participate in various network services. At present, the security problems brought about by the inherent uncontrollable behavior mode of the self-organizing network node itself are becoming more and more serious. On the one hand, due to the lack of a unified identity authentication mechanism, the relay node may launch malicious attacks such as tampering and packet loss, seriously damaging the confidentiality and integrity of the transmitted data; on the...

AI Technical Summary

Problems solved by technology

[0005] (1) Trust evaluation relies heavily on trusted centers or single-point monitoring, and the evaluation results are static and single, which cannot adapt to the dynamic networking environment of self-organizing networks;

[0006] (2) Trust management lacks an effective incentive strategy, which cannot ensure the availability of communication links while improving the confidentiality and integrity of transmitted data

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