Secret key management method for distributed wireless sensor network

Abstract

The invention discloses a secret key management method specific to a distributed wireless sensor network, which supports network extension and dynamic node movement. When a new node is added into a network, the newly added node can establish a safety communication secret key pair with a neighboring node in the network; when the node shifts out from a neighboring node communication range, the original neighboring node cancels the communication secret key pair with the node; and when the secret key is used for overlong time, the secret key pair is updated between the nodes. The secret key management method has low requirement for node storage resources, and the communication secret key pair can be established between the neighboring nodes as long as a public secret key pair is pre-stored bythe node; thus, the network safety performance is improved, other nodes and the link safety cannot be influenced when the node in the network is captured, and the purposes of the invention are achieved.

Description

technical field [0001] The invention relates to a key management method in the field of wireless network information security, in particular to a distributed wireless sensor network key management method applied to a distributed wireless sensor network. Background technique [0002] With the advancement of wireless communication technology, microchip manufacturing and other technologies, wireless sensor networks (WSN) have been widely used in important military and commercial fields such as target tracking, patient monitoring, and environmental monitoring. [0003] Like traditional computer communication networks, wireless sensor networks also have various security threats. The broadcast characteristics of wireless channels and self-organizing networking characteristics make wireless sensor networks vulnerable to passive and active attacks by attackers. Common attacks include message monitoring, tampering, forgery and blocking. [0004] At the same time, wireless sensor net...

AI Technical Summary

Problems solved by technology

To ensure the safe and effective transmission of wireless sensor networks, the openness of wireless channels requires encryption systems, resource-constrained nodes require lightweight, efficient and secure implementation solutions, and uncontrolled operations require wireless sensor network security policies with high security flexibility. have brought new challenges to the security of wireless sensor networks.

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