Efficient and energy-saving link safety method in wireless sensor network

Abstract

The invention relates to an efficient and energy-saving link safety method in a wireless sensor network, belonging to the cross technical field of a wireless sensor network and information safety. The invention establishes a neighbor list in which parameters used by the link safety method are stored. The invention adopts a method of encrypting sequence number fields at the header of a data frame, frame check sequence fields and a network grouping part together, can prevent malicious nodes from intercepting and analyzing flow of data of the wireless sensor network, and can confront active attacks of replay, denial of service, and the like initiated by the malicious nodes. The invention carries out link encryption under the condition of not changing the IEEE 802.15.4 general-purpose data frame structure, thus being simple and easy in use. The whole scheme comprises three stages of establishing the neighbor list, forwarding data and maintaining the neighbor list. Because the neighbor list has ingenious design, the three stages ensure that the sensor nodes have low expenses on computation, communication and storage, thus the invention is very suitable for the wireless sensor network with limited resources.

Description

technical field [0001] The invention is a method for realizing link security by using the neighbor list established between single-hop nodes, which is used to prevent malicious nodes from eavesdropping on wireless sensor network data and flow analysis, and to resist active attacks initiated by malicious nodes, belonging to wireless sensor Network and information security cross-technical application fields. Background technique [0002] Sensor nodes can be used to detect information such as temperature, humidity, light, and pressure in the surrounding environment. A wireless sensor network composed of multiple sensor nodes and base stations is usually deployed in forests, farmland, and civil buildings to collect information that people are interested in. Since wireless sensor networks use wireless links for data transmission, and the resources of sensor nodes are very limited, complex security mechanisms cannot be used, so wireless sensor networks face many security threats a...

AI Technical Summary

Problems solved by technology

This kind of application layer security strategy can only guarantee end-to-end security, and the intermediate nodes will still be threatened by various attacks, such as replay attacks, DoS denial of service attacks, etc., resulting in tampered transmission in the network. After the message is received by the base station, the error cannot be found through message verification code verification, random number comparison, etc., which greatly reduces the utilization rate of network resources.

Images