Data fusion method capable of ensuring confidentiality and integrity

Abstract

The invention belongs to the technical field of sensor networks, and particularly relates to a data fusion method capable of ensuring confidentiality and integrity in a wireless sensor network. The method includes the steps of forming a node set structure with three nodes in one set in a network, encrypting data collected by source nodes through a privacy homomorphic encryption method, respectively verifying the data integrity of data in the fusion and transmission process by combining the message authentication code (MAC) authentication technology with the node set structure of the network, and recovering the data through the privacy hoomorphic encryption technology to obtain a correct fusion result after the data are completely transmitted to a base station. By means of the method, the confidentiality and the integrity in the data fusion process and the data transmission process of the data in the wireless sensor network are ensured, the data confidentiality, the data integrity and the node energy are comprehensively taken into consideration when the data fusion method is designed, wrong data existing in the network can be detected, and good performance can be achieved through the mechanism even under the condition that the number of the damaged nodes is fixed.

Description

technical field [0001] The invention belongs to the technical field of sensor networks, and in particular relates to a data fusion method in a wireless sensor network that can simultaneously ensure confidentiality and integrity, and can detect error data in the network in time. Background technique [0002] A wireless sensor network consists of a large number of cheap miniature sensor nodes deployed in the monitoring area. In wireless sensor networks, data fusion is an important method to reduce data transmission and reduce node energy consumption. Secure data fusion has always been one of the research hotspots. Therefore, data fusion methods should fully consider the basic characteristics of data such as confidentiality, integrity, authenticity and availability. [0003] Wenliang Du et al. proposed a witness-based method to ensure data fusion. Each witness node sends the message authentication code MAC of the fusion data to the sink node, and the sink node collects these M...

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Problems solved by technology

[0005] Qiang Zhou et al. proposed a secure data fusion mechanism based on homomorphic parameters, applying symmetric key homomorphic encryption and homomorphic MAC to protect data privacy and detect data integrity, but this mechanism only verifies data at the base station , is less efficient when there are damaged nodes in the network, and in the process of verifying the integrity, it is necessary to calculate the

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