Abstract
With the development of intelligent medical, electronic medical records (EMR) promote the information management of Internet of Medical Things (IoMT) data. As the need for sharing IoMT data between organizations grows, EMR faces challenges in terms of reliability of the third-party storage, availability of cross-domain authentication, and efficiency of access control in mobile network. In this paper, we propose a blockchain-based medical data sharing model to guarantee the security and efficiency of cross-domain sharing of medical privacy data. Firstly, heterogeneous data of IoMT are classified, and the lightweight data are mixed encrypted and stored in the blockchain full nodes. Then considering the availability and scalability, we introduce the light nodes deployed on mobile edge computing (MEC) platforms to provide distributed access control proxy service. In the CP-ABE access control algorithm, we decouple the relationship between attributes and decryption time, and further design a token mechanism in improved CP-ABE algorithm. Finally, security analysis proves that our model performs well in terms of privacy. Simulation results show that the encryption and decryption performance and key storage space of our CP-ABE access control algorithm are better than traditional algorithms.
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The work is supported by the Ministry of Industry and Information Technology project entitled “Blockchain based anti-counterfeiting and traceability platform for industrial products”.
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Sun, Y., Chen, S., Fang, Y., Xu, W., Luo, Q., Rui, L. (2022). An Efficient and Distributed Data Storage and Sharing Method Based on Blockchain. In: Liu, Q., Liu, X., Cheng, J., Shen, T., Tian, Y. (eds) Proceedings of the 12th International Conference on Computer Engineering and Networks. CENet 2022. Lecture Notes in Electrical Engineering, vol 961. Springer, Singapore. https://doi.org/10.1007/978-981-19-6901-0_44
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DOI: https://doi.org/10.1007/978-981-19-6901-0_44
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