IoT-based secure medical big data system

Abstract

The invention relates to a safe medical treatment big data system based on Internet of Things. The Internet of Things acquires physiological data of a patient and collects the data to an electronic medical treatment document; the big data in a medical treatment system is outsourced to a cloud platform for being stored; the patient distributes a group secret key for the nodes in the Internet of Things through a no-interaction mode, the node encrypts Internet of Things data with the group secret key; after the patient receives the encrypted data in the Internet of Things, high-efficiency data authentication can be realized through a batch authentication method. According to the invention, a lightweight class access control method is designed for realizing safe and efficient sharing of big data, and the data is prevented from being accessed by unauthorized person; moreover, an access strategy updating mechanism based on keyword matching is designed; the patient only needs to send an updating request comprising a keyword and a new access strategy to the cloud platform, the cloud platform can efficiently realize big data strategy updating based on keyword matching, and in such process,any plaintext information about the keyword and the medical treatment document cannot be leaked.

Description

technical field [0001] The invention relates to a secure medical big data system based on the Internet of Things. Background technique [0002] The rapid development of the Internet of Things has greatly changed our daily life, especially in the field of electronic medicine. Patients suffering from chronic diseases or serious diseases can monitor various physiological data by being equipped with implanted or wearable medical sensors. The medical node collects the physiological data of the patient and collects the data into an electronic medical document through the network. With the increase of data, patients' electronic medical documents constitute medical big data, and thus bring many challenges, such as data privacy, searchability, updating and sharing issues. In order to deal with these problems, it is urgent to design a secure medical big data system based on the Internet of Things. [0003] In the medical Internet of Things, the patient's physiological data may leak...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a secure medical big data system based on the Internet of Things in order to solve problems such as privacy protection, batch verification, policy update, and high computing overhead in medical big data that cannot be efficiently processed in some solutions

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