Ad hoc network opportunistic routing method avoiding malicious attacks

Abstract

The invention presents an Ad hoc network opportunistic routing method avoiding malicious attacks. First, priori information of routing in an Ad hoc network is acquired through a routing information update mechanism based on a hello message; then, a data packet is transmitted along an opportunistic path through a candidate forwarding node selecting mechanism based on time delay parameters and a forwarding node determining mechanism based on priority; and finally, data tampering attack, false routing attack and selective forwarding attack behaviors in the network are identified through a malicious behavior identifying mechanism based on data characteristic information, the influence of the attack behaviors on the credibility of each node is quantified through a node credibility mechanism based on credibility, and malicious nodes are judged according to the credibility and eliminated from the Ad hoc network. Thus, the security of data transmission via an opportunistic routing protocol in the Ad hoc network is ensured.

Description

technical field [0001] The invention relates to an Ad hoc network opportunistic routing method, which belongs to the technical field of routing selection mechanisms. Background technique [0002] Routing protocols work at the network layer and are used to establish data packet transmission paths between source nodes and destination nodes. Routing protocols in Adhoc networks need to have characteristics such as invulnerability, reliability, scalability, and security to meet the quality requirements of data communication. Opportunistic routing protocols improve the data transmission capability by participating in data packet forwarding through multiple candidate forwarding nodes during each hop of data transmission. In addition, the protocol can adapt to the dynamic network topology and the mobility of nodes. It is difficult for traditional routing to maintain a fixed path in an Ad hoc network. If any node in the path fails, data transmission will fail. Data transmission of ...

AI Technical Summary

Problems solved by technology

If the attacker is identified only through the above-mentioned malicious behavior identification mechanism, it is likely to cause misjudgment.

For example, there is a bit error in the data transmission process in the network and no correction is found. When the information verification is performed in the above process, the information verification caused by the bit error will be uniformly identified as a tampering attack on the data.

There is also a large possibility of misjudgment in the identification of the above-mentioned false routing attack and selective forwarding attack. The environment has a great impact on the performance of the wireless ad hoc network. If the environment changes, it may also exist in the statistical information and routing information table. In the case of large discrepancies in information

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