A Malicious Node Tolerance Method in Wireless Sensor Networks

Abstract

The invention discloses a malicious node tolerance method in a wireless sensor network, which changes the traditional security protection method based on encryption, authentication and trust model, and actively protects by actively destroying malicious nodes to achieve the purpose of attack tolerance. The energy of malicious nodes is consumed by transmitting meaningless data in the network. In the state of attack tolerance, normal nodes only generate energy consumption when sending data, while malicious nodes are always in the radio frequency working state. With the small energy consumption of all normal nodes In exchange for the large energy consumption of malicious nodes so that they cannot work. On the premise of ensuring the normal data communication of the sensor network, the effective protection of malicious nodes is completed, which provides a new idea for the secure communication of the wireless sensor network.

Description

technical field [0001] The invention relates to a malicious node attack tolerance method in a wireless sensor network, belonging to the fields of wireless communication and network security. Background technique [0002] In recent years, with the development and integration of sensor, computer, wireless communication, micro-electromechanical and other technologies, wireless sensor networks (WSN: wireless sensor networks) have emerged. People can finally monitor the external environment in real time and realize large-scale and automatic information collection. WSN has broad application prospects in military and civilian fields such as military reconnaissance, environmental monitoring, medical monitoring, space exploration, urban traffic management, and warehouse management. [0003] A wireless sensor network is composed of a large number of sensor nodes with limited battery energy, computing power, storage capacity, and communication capabilities. If the network nodes are un...

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Problems solved by technology

[0005] At present, malicious nodes in some wireless sensor network models are assumed to have unlimited energy and resources, but this assumption is often not true in practical applications. In the actual wireless sensor deployment scenario, unlimited energy and resources are almost impossible. Realized, this is only applicable to wired network scenarios

Therefore, for malicious nodes, there is also the situation that when the energy is exhausted and cannot work

[0006] The attack methods of malicious nodes in the sensor network include selective forwarding, data tampering, replay and DOS attacks, etc. If malicious nodes want to carry out the above attacks, when there is data packet transmission in the network, the radio frequency circuit must be in working condition, otherwise unable to achieve the purpose of the attack

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