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Published in: Peer-to-Peer Networking and Applications 1/2023

23-09-2022

A revocable attribute-based encryption EHR sharing scheme with multiple authorities in blockchain

Authors: Xiaohui Yang, Wenjie Li, Kai Fan

Published in: Peer-to-Peer Networking and Applications | Issue 1/2023

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Abstract

With the development of digital healthcare, sharing electronic medical record data has become an indispensable part of improving medical conditions. Aiming at the centralized power caused by the single attribute authority in current CP-ABE schemes and the problem that cloud servers are curious and even malicious, we design a revocable CP-ABE EHR sharing scheme with multiple authorities (MA-RABE) in blockchain. In this solution, a group of authorities complete user attribute distribution, key generation and user management through secret sharing and transactions. Besides, we innovatively implemented a distributed one-way anonymous key agreement so that other participants cannot obtain useful information from the fully hidden policy embedded in the ciphertext. Taking into account the computational overhead of a large number of bilinear operations in the decryption process, the solution also supports the cloud server to pre-decrypt the ciphertext, and the data user only needs to perform exponentiation operation once to obtain the plaintext from the pre-decryption result. Theoretical analysis and performance evaluation show that the scheme has reliable security and lower user revocation and ciphertext update overhead.

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Appendix
Available only for authorised users
Literature
2.
go back to reference Madhavan S, Bastarache L, Brown JS, Butte AJ, Dorr DA, Embi PJ, Friedman CP, Johnson KB, Moore JH, Kohane IS et al (2021) Use of electronic health records to support a public health response to the covid-19 pandemic in the united states: a perspective from 15 academic medical centers. J Am Med Inform Assoc 28(2):393–401. https://doi.org/10.1093/jamia/ocaa287CrossRef Madhavan S, Bastarache L, Brown JS, Butte AJ, Dorr DA, Embi PJ, Friedman CP, Johnson KB, Moore JH, Kohane IS et al (2021) Use of electronic health records to support a public health response to the covid-19 pandemic in the united states: a perspective from 15 academic medical centers. J Am Med Inform Assoc 28(2):393–401. https://​doi.​org/​10.​1093/​jamia/​ocaa287CrossRef
10.
go back to reference Zhang G, Chen X, Feng B, Guo X, Hao X, Ren H, Dong C, Zhang Y (2022) BCST-APTS: Blockchain and CP-ABE empowered data supervision, sharing, and privacy protection scheme for secure and trusted agricultural product traceability system. Secur Commun Netw 2022:2958963. https://doi.org/10.1155/2022/2958963CrossRef Zhang G, Chen X, Feng B, Guo X, Hao X, Ren H, Dong C, Zhang Y (2022) BCST-APTS: Blockchain and CP-ABE empowered data supervision, sharing, and privacy protection scheme for secure and trusted agricultural product traceability system. Secur Commun Netw 2022:2958963. https://​doi.​org/​10.​1155/​2022/​2958963CrossRef
Metadata
Title
A revocable attribute-based encryption EHR sharing scheme with multiple authorities in blockchain
Authors
Xiaohui Yang
Wenjie Li
Kai Fan
Publication date
23-09-2022
Publisher
Springer US
Published in
Peer-to-Peer Networking and Applications / Issue 1/2023
Print ISSN: 1936-6442
Electronic ISSN: 1936-6450
DOI
https://doi.org/10.1007/s12083-022-01387-4

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