Lightweight encryption method and system for sensor gateway nodes of body area network

Abstract

The invention discloses a lightweight encryption method and system for sensor gateway nodes of a body area network. The method comprises the following steps of: acquiring perception data of a plurality of sensor nodes; calculating deviation values of all the perception data; selecting a secret key to encrypt the deviation values, obtaining encrypted encryption values, and using symbol values and the encryption values corresponding to all the sensor nodes as uploading values of the sensor nodes; carrying out replacement on the uploading values of all the sensor nodes arranged according to the node sequence by utilizing the selected replacement sequence, and obtaining replaced uploading values of all the sensor nodes; and uploading the replaced uploading values of all the sensor nodes, the selected secret key sequence and the selected replacement sequence number to a cloud-computing storage server end. The method and system disclosed by the invention have the advantages that the adopted encryption algorithm is fast in operation speed and less in power consumption, and after the encrypted data are replaced, the security is improved.

Description

technical field [0001] The invention relates to the field of body area network sensor data encryption, in particular to a lightweight encryption method and encryption system for a body area network sensor gateway node. Background technique [0002] Body area network (WBAN, Wireless Body Area Networks), also known as body area sensor network. A body area network is usually composed of sensor nodes and sensor gateway nodes. The sensor nodes acquire and upload the data of sensing physical health indicators to the sensor gateway node, and the sensor gateway node further uploads these data to the cloud computing storage center for medical monitoring, monitoring, nursing, diagnosis, etc. [0003] The body area network is the main application of the Internet of Things, which provides real-time health-related data for telemedicine, and can be widely used in telemedicine, condition monitoring, elderly management, etc., and has a broad market prospect. [0004] Since the body area n...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an encryption method with fast encryption speed and low power consumption in view of the defects that the traditional sensor node data encryption method in the prior art consumes too much power, which is not conducive to the movement of health monitoring objects and the continuous use of sensors. Lightweight encryption method and encryption system for small body area network sensor gateway nodes

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