Medical data sharing system based on Blockchain technology and designing method

Abstract

The invention belongs to the field of data information safety technology, and discloses a medical data sharing system based on Blockchain technology and a designing method. The medical data sharing system based on the Blockchain technology comprises components of a data uploader, a data manager, a data requester, alliance chain nodes and a system administrator. In the system, the data uploader utilizes AES for encrypting the medical data, thereby effectively protecting medical data privacy, and realizing high-efficiency medical data storage. Furthermore according to a symmetric key in the AESis encrypted according to the CPABE, thereby ensuring a fact that only the data requestor with an attribute that satisfies a preset accessing strategy structure can perform deciphering for obtaining the symmetric key, realizing fine-grained access control of the medical data, and realizing supports for accessing control of the temporary request data in an emergency. Obviously, the system and the method effectively settle existing problems based on a Blockchain medical data sharing system and safely and efficiently provides services such as medical data storage, fine-grained access control andsharing.

Description

technical field [0001] The invention belongs to the technical field of data information security, and in particular relates to a medical data sharing system and design method based on block chain technology. Background technique [0002] At present, proxy re-encryption technology is one of the commonly used technologies for data sharing. This technology can effectively realize autonomous authorized access to realize data sharing, but it is difficult to directly apply to data sharing in the medical field. Mainly because in the medical field, protecting patient medical information faces additional legal requirements and has unique needs in terms of security and privacy. Especially in the Internet age, with the popularity of cloud storage and mobile medical devices, recording and sharing data has become more common, and the risk of malicious attacks and private information leakage during the sharing process has also become higher. As a result, the healthcare domain faces uniqu...

AI Technical Summary

Problems solved by technology

Although a series of blockchain-based medical data management systems have been proposed to achieve functions such as safe storage, autonomous control, access control, and data sharing of medical data, the current blockchain-based medical data sharing system ( Such as OmniPHR) still has the deficiency that each data access needs to be authorized by the patient, resulting in a small scope of data sharing and other deficiencies

In response to such problems, the existing blockchain-based HGD system uses a unified data model to store and organize data in the database management system, which can support patients to own, control and safely share their own medical records, although the system tries to protect privacy. While providing secure data sharing, it improves the scope of data sharing, but it cannot grant users temporary access to data in emergency situations

[0004] To sum up, the problems existing in the existing technology are: the current blockchain-based medical data sharing system has shortcomings such as a small range of data sharing, and the inability to authorize temporary access urgently.

[0005] Difficulty in solving the above technical problems: Data sharing using proxy re-encryption technology can independently authorize access and effectively support emergency authorized temporary access, but its data sharing scope is single, and it is difficult to support large-scale sharing

Combining the non-tamperable and public verifiability of blockchain technology, although it can reduce the complexity of data sharing operations, it still cannot take into account the emergency authorization of temporary access

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