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A searchable and privacy-preserving data-sharing cloud-assisted electronic medical system

A data sharing and electronic medical technology, applied in the direction of patient-specific data, digital data protection, electronic digital data processing, etc., to achieve the effect of ensuring integrity and correctness, improving efficiency, excellent feasibility and efficiency

Active Publication Date: 2021-08-24
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the current electronic medical care system cannot perform keyword range search to realize data sharing under the protection of data privacy, and proposes a searchable and privacy-protected data sharing cloud-assisted electronic medical system

Method used

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  • A searchable and privacy-preserving data-sharing cloud-assisted electronic medical system
  • A searchable and privacy-preserving data-sharing cloud-assisted electronic medical system
  • A searchable and privacy-preserving data-sharing cloud-assisted electronic medical system

Examples

Experimental program
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Effect test

Embodiment 1

[0056] This embodiment describes in detail the implementation of a searchable and privacy-protected data sharing cloud-assisted electronic medical system for data search, data privacy protection, and data sharing.

[0057] A general model of a searchable and privacy-preserving data sharing cloud-assisted electronic medical system as figure 1 shown.

[0058] The trust agency generates an encryption key and distributes the encryption key to the IoT gateway, cloud server A, cloud server B, and data users. When the data of various physical indicators of the data owner are collected by wearable devices to form PHI files, each PHI file has an identifier, marked as ID(f), and then the data owner sends the PHI file to the IoT gateway . The IoT gateway proposes the keyword w from the PHI file. Then, the Internet of Things gateway performs symmetric encryption on the PHI file to generate an encrypted PHI file, performs homomorphic encryption and symmetric encryption on keywords to ge...

Embodiment 2

[0065] This example describes in detail our experiments on an electronic healthcare system of the present invention. We mainly tested the e-Healthcare system in three scenarios. First of all, for the experiment conducted under the scenario of different numbers of storage files in cloud server A, we conducted a simulation experiment of keyword range search in this scenario, and the experimental results are as follows: image 3 , mainly experimented with ranges of 10, 20, and 30, because PHI files are randomly generated, so as the number of stored files increases, the number of returned files will also increase, and the required time will become longer. When the number of returned files is more than 6000 and the query keyword range is 30, the required time will not exceed 7s. This experiment shows that the time required for file return may be related to the number of returned files and the number of stored files. Secondly, we conduct experiments on the scenario where different...

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Abstract

The invention relates to a data sharing cloud-assisted electronic medical system capable of searching and protecting privacy, and belongs to the technical field of electronic medical care and data sharing. Using the encryption method and two cloud servers to cooperate with each other to achieve privacy protection and data security, using message authentication code and modified Bloom filter to complete the integrity and correctness of the file and efficient data grouping, using the proposed homomorphic encryption The Privacy Equivalence Test Protocol for Keyword Range Search enables data sharing between patients and third-party healthcare providers. The data sharing cloud-assisted electronic medical system enables third-party healthcare service providers to search and access people's personal health information files in a safe and efficient manner, thereby remotely monitoring their health conditions and providing timely diagnosis. Finally, the feasibility and efficiency of the proposed system in practical medical applications are demonstrated through experiments under real datasets and extensive simulations on tens of thousands of virtual datasets.

Description

technical field [0001] The invention relates to a data sharing cloud-assisted electronic medical system capable of searching and protecting privacy, and belongs to the technical field of electronic medical care and data sharing. Background technique [0002] In recent years, the rapid development of cloud computing and the Internet of Things has provided a good platform for the reshaping of the traditional medical industry into a more flexible and efficient electronic medical model. In this platform, a set of wearable devices periodically collect key vital signs from the data owner (i.e. the patient). People can aggregate these information into personal health information (PersonalHealth Information, PHI) files and store them in cloud servers. Their PHI files will be shared with third-party Healthcare Service Providers (HSPs) through on-demand inquiries to monitor the patient's health status and provide timely diagnosis. Among them, third-party medical service providers ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F21/62G06F21/64G16H10/60
CPCG06F21/602G06F21/6227G06F21/6245G06F21/64G06F2221/2107G16H10/60
Inventor 徐畅王宁宁祝烈煌张川
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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