Sensor node trust value management method of wireless sensor network of tree topology structure based on Internet protocol (IP) v 6

Abstract

The invention discloses a sensor node trust value management method of a wireless sensor network of a tree topology structure based on Internet protocol (IP) v 6. The sensor node trust value management method of the wireless sensor network of the tree topology structure based on the IP v 6 comprises the following steps that trust value estimation is conducted between sensor nodes in a periodicity mode, each sensor node reports a trust value estimation result of a neighbour node to a Sink node, all neighbour node trust value estimation results of a certain sensor node and trust value estimation results of the Sink node on the sensor node are comprehensive, and the trust value estimation at least comprises four dimensions including a proximity index, a loyalty index, a power consumption degree and a cooperation degree. The method combines the four dimensions of the proximity index, the loyalty index, the power consumption degree and the cooperation degree to conduct estimation for the node trust value, the trust value estimation result is high in accuracy and reliability, an attacking node can be timely detected and is conducted processing, safety and reliability of data communications of a sensor network are ensured, occupation of a security algorithm on network resources is reduced, and the sensor node trust value management method has good application for a network topology with dynamic changes.

Description

Technical field [0001] The invention relates to a method for managing trust value of sensor nodes in a wireless sensor network based on an IPv6 tree topology structure. Background technique [0002] At present, wireless sensor networks have gradually become a research hotspot in academia and have received extensive attention from the industry. Although due to technical constraints, the large-scale commercial application of wireless sensor networks is not mature enough, but due to its extremely broad application prospects, many research institutions and companies in many countries around the world have invested a lot of energy in related research. jobs. Especially in recent years, with the decline of computing costs and the shrinking of the size of microprocessors, some wireless sensor networks have been put into use. Among them, typical applications include: environmental monitoring and protection, the use of wireless sensors to collect environmental data, used to monitor the d...

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Problems solved by technology

[0013] 4. Sybil attack: The attack node uses a variety of identity information to deceive other neighbor nodes, so that other nodes preferentially choose this node for routing, and then carry out other attack behaviors;

[0015] 6. Energy exhaustion attack: Since new nodes need to be dynamically added to the wireless sensor network, and after the new node joins the network, it will interact with its neighbor nodes through the "HELLO" message. The atta

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