Safeguarding method for wireless sensor network

Abstract

The present invention proposes a security protection method for a wireless sensor network. In the method, a dedicated warning node with enhanced security functions is designed in the wireless sensor network, and a security protection network logically independent of the sensor network is constructed accordingly. The security is divided into several levels. The security protection network is used to give the security level of each sensing area in the sensor network. According to this security level, each area evolves the cryptographic algorithm and adopts corresponding data protection measures, forming a safe and effective resource saving system. network security mechanism. The method of the invention improves the security protection capability of the wireless sensor network, reduces the network security response time, improves the flexibility of the network to deal with security threats, saves network security resources, and reduces the cost of changing cryptographic algorithms.

Description

technical field [0001] The invention belongs to the technical field of wireless sensor network security, in particular to a dynamic self-adaptive hierarchical security mechanism of a wireless sensor network. Background technique [0002] With the rise of the Internet of Things (IOT), the Wireless Sensor Network (WSN), as the main support for its realization, has a significant impact on the development of the Internet of Things technology. In most cases, the sensor nodes of the wireless sensor network are randomly deployed in the field environment, the working environment is complex, and due to the broadcast characteristics of wireless communication, the network security situation is severe. This situation is in military reconnaissance, industrial monitoring, environmental monitoring, public Especially in security and other fields. At the same time, due to the limited resources of the wireless sensor network, it is not feasible to adopt a very complex security mechanism. The...

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Problems solved by technology

However, the dynamic key management scheme requires multiple key negotiations between nodes, which virtually increases the risk of key leakage and the energy and resource burden of nodes, and some schemes also require complex calculations and large-capacity storage resources.

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