Data reliability protection method based on check code in wireless sensor network

Abstract

The invention discloses a data reliability protection method based on a check code in a wireless sensor network. The method comprises the steps of: collecting data through a source node, comparing reserved data characteristic codes after data grouping, obtaining the important degree of corresponding data, and converting the important degree of corresponding data into binary numbers; utilizing a check code calculating formula to obtain the check code, combining the check code with a Hash function to generate watermark information, converting the watermark information into an unsigned string after implanting a watermark into the watermark information, and sending the unsigned string; utilizing a separating algorithm to obtain related data after a base station node receives the data and converts the data into binary numbers; if the watermark information is verified to be consistent, indicating that the data is complete and reliable, and extracting the data; and if not, utilizing a trust degree calculating formula to obtain a data trust degree. If the data trust degree is larger than a pre-stored trust degree threshold, the reliability of the data satisfies a preset standard, the data can be extracted, and if not, the data packet is discarded. According to the invention, whether the data is lost or altered under any condition can be judged, the data information can be restored based on the practical condition, retransmission is effectively avoided, the effect of saving consumed energy is realized, and the service lifetime of a network is prolonged.

Description

technical field [0001] The invention belongs to the field of wireless sensor network data security, and in particular relates to a data reliability protection method based on a check code in a wireless sensor network. Background technique [0002] Wireless sensor network (WirelessSensorNetwork, WSN) is composed of a large number of sensor nodes, cooperatively perceive, collect, process and transmit data, and complete various predetermined tasks. Due to many factors such as limited energy, environmental changes, and conflict interference in the network, reliable data may not be obtained. However, the wireless sensor network is mainly centered on data, and the event processing results are obtained through the analysis of the data, so the accuracy and reliability of the data will directly affect whether the correct decision is made. How to construct a reliability model for wireless sensor networks is the primary problem to be solved to ensure the security of wireless sensor ne...

AI Technical Summary

Problems solved by technology

[0007] The above method can effectively improve the reliability of the wireless sensor network and improve the security of the network. However, it is difficult to ensure the security of specific data, but it is difficult to achieve low consumption and low delay in practical applications.

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