False data identification method based on digital watermarking technology

Abstract

The invention relates to a false data identification method based on a digital watermarking technology. The false data identification method comprises the following steps: converging perceptual data sent by each collecting node by a cluster-head node after a network is initialized; searching identification watermark information of converged data from nodes in the cluster; processing witness watermark information provided by t witness nodes, and embedding the witness watermark information into the converged data; and after the data reaches a base station, extracting and generating witness watermarks from the received data by the base station so as to judge whether the converged data is false data or not. According to the false data identification method, the false data can be effectively identified without depending on the message authentication code (MAC) in the traditional identification method.

Description

[0001] technical field [0002] This method is a false data identification method based on digital watermark technology. It mainly solves the identification of false data in wireless sensor networks, and belongs to the field of wireless sensor network security. [0003] Background technique [0004] Wireless Sensor Networks (WSN) is a network composed of a large number of sensor nodes deployed in unattended areas for data collection and transmission. It has broad application prospects in military, environment, medical, home, industry and other aspects. The wireless sensor network is mainly centered on data, and after the nodes collect data, they must reach the base station through multi-hop transmission. In the process of data collection and transmission, it will be attacked by various aspects, and false data attack is one of them. The so-called false data attack means that the attacker captures the intra-cluster nodes in the perception area, and achieves the purpose of d...

AI Technical Summary

Problems solved by technology

[0008] The above method has certain shortcomings while effectively detecting false data:

[0011]2. Security issues of MAC value

[0012]Since the wireless sensor network uses wireless communication for data transmission, the transmission process is easily disturbed by other conditions such as noise, so the above method proposes The received MAC code is easily damaged during transmission. Even if there is no false data attack in the network, the damaged MAC code may mislead the base station, making the base station process the correct data as false data.

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