Blockchain-assisted Revocable Hierarchical Attribute-based Encryption Electronic Medical Record Sharing Scheme

DOI: https://doi.org/10.62517/jbdc.202401211

Author(s)

Xiaotao Yang*, Zaibin Chang, Man Jiang

Affiliation(s)

Public Course Department, Xi’an Traffic Engineering Institute, Xi’an, Shaanxi, China *Corresponding Author.

Abstract

The integration of modern medical systems with the internet of things has significantly improved medical services. Nevertheless, the widespread outsourcing of electronic medical records to third-party cloud storage introduces numerous security challenges, including privacy breaches, data tampering, unauthorized access, and storage limitations. To mitigate these issues, this paper introduces a novel blockchain-assisted revocable hierarchical attribute-based encryption scheme for electronic medical record sharing. This scheme leverages a decentralized blockchain system to manage user revocation and key management tasks, thereby alleviating the need for user ciphertext re-encryption. Additionally, employing ciphertext policy attribute-based encryption enhances access control granularity and safeguards user privacy by concealing access policies. Performance analysis indicates superior performance of the proposed scheme.

Keywords

Internet of Things; Electronic Medicalrecords; Blockchain Technology; Attribute-based Encryption; Access Control

References

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