Searchable encryption system with traitor tracing function in mobile electronic healthcare

Abstract

The invention relates to a searchable encryption system with a traitor tracing function in mobile electronic healthcare. In view of the problems that the computation overhead in the existing mobile health (mHealth) system is too large, traitor tracing cannot be supported, and that on-demand revocation of users cannot be realized, a novel lightweight secure electronic health system (LiST) is provided, which can perform data sharing, access authority control and traitor tracing. In addition to realizing fine-grained access control of encrypted electronic heath records (EHR) by using an attribute-based encryption (ABE) mechanism, the LiST also supports keyword search of the encrypted HER, and provides an efficient traitor tracing mechanism and a flexible user revocation mechanism.

Description

technical field [0001] The invention relates to a searchable encryption system with traitor tracking function in mobile electronic medical treatment. Background technique [0002] The mobile electronic medical (mHealth) system includes various mobile devices, and uses wireless communication technology to communicate between devices, which can be used to collect clinical medical data and provide it to medical service institutions. The emergence of wireless body sensor networks (WBSN) has accelerated the development of mobile electronic medical networks, placing implantable or wearable medical sensors on patients to monitor physiological data. These medical data are aggregated into mobile devices and sent to the cloud via wireless networks. However, mobile devices often have very limited computing, storage capabilities, and limited power supplies. In addition to the performance issues of mobile devices, data security and privacy issues are also major obstacles preventing the...

AI Technical Summary

Problems solved by technology

The disadvantages of the existing traitor tracking schemes are: it is necessary to establish and maintain a user list to realize the traitor tracking function; or it will generate a lot of extra computing overhead for the system

Other searchable encryption schemes require the system to re-encrypt all encrypted files and update all legitimate keys, thereby revoking the user's

Obviously, this approach is not suitable for large electronic medical systems

In addition, the computational overhead of these schemes increases with the complexity of the access structure, and a large amount of computational overhead is not suitable for mobile devices with limited power in mHealth networks

[0007] In view of the problems that the existing system has too much computing and storage overhead, cannot support traitor tracking, and cannot perform user revocation as required, this invention proposes a new type of lightweight, which can share data and access rights, and can perform traitor tracking. Tracking Secure Electronic Medical System (LiST)

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