Revocable and Traceable Undeniable Attribute-Based Encryption in Cloud-Enabled E-Health Systems

被引:3
|
作者
He, Zhongxiang [1 ]
Chen, Yuling [1 ]
Luo, Yun [1 ]
Zhang, Lingyun [2 ]
Tang, Yingying [2 ]
机构
[1] Guizhou Univ, State Key Lab Publ Big Data, Guiyang 550000, Peoples R China
[2] Guizhou Univ, Coll Comp Sci & Technol, Guiyang 550000, Peoples R China
关键词
cloud; electronic healthcare; attribute-based encryption; traceable; direct revocation; multi-authority;
D O I
10.3390/e26010045
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The emerging cloud storage technology has significantly improved efficiency and productivity in the traditional electronic healthcare field. However, it has also brought about many security concerns. Ciphertext policy attribute-based encryption (CP-ABE) holds immense potential in achieving fine-grained access control, providing robust security for electronic healthcare data in the cloud. However, current CP-ABE schemes still face issues such as inflexible attribute revocation, relatively lower computational capabilities, and key management. To address these issues, this paper introduces a revocable and traceable undeniable ciphertext policy attribute-based encryption scheme (MA-RUABE). MA-RUABE not only enables fast and accurate data traceability, effectively preventing malicious user key leakage, but also includes a direct revocation feature, significantly enhancing computational efficiency. Furthermore, the introduction of a multi-permission mechanism resolves the issue of centralization of power caused by single-attribute permissions. Furthermore, a security analysis demonstrates that our system ensures resilience against chosen plaintext attacks. Experimental results demonstrate that MA-RUABE incurs lower computational overhead, effectively enhancing system performance and ensuring data-sharing security in cloud-based electronic healthcare systems.
引用
收藏
页数:17
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