期刊
IEEE TRANSACTIONS ON CLOUD COMPUTING
卷 9, 期 4, 页码 1362-1375出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TCC.2019.2927219
关键词
Cloud storage services; wireless body area networks; public auditing; conditional identity privacy; Ethereum blockchain
类别
资金
- National Key R&D Program of China [2017YFB0802000]
- National Natural Science Foundation of China [61872060]
- China Postdoctoral Science Foundation [2017M623008]
- Singapore Ministry of Education [MOE2016-T2-2-014]
- National Research Foundation, Prime Minister's Office, Singapore under its Strategic Capability Research Centres Funding Initiative
The proposed conditional identity privacy-preserving public auditing (CIPPPA) mechanism aims to address the issue of traditional public auditing mechanisms failing to achieve conditional identity privacy for patients in cloud-based WBANs. By integrating Ethereum blockchain to assist patients in validating malicious auditing behaviors, reliable medical data management and security are achieved.
Wireless body area networks (WBANs) rely on powerful cloud storage services to manage massive medical data. As precise medical diagnosis analysis is heavily based on these medical data, any altered medical data may cause severe consequences, the integrity of outsourced medical data has become the most concerning security issue. Up to date, most existing public auditing mechanisms have been proposed to check the data integrity, but they could not achieve conditional identity privacy, any patient would not like others to know his/her real identity corresponding to certain serious disease, and some malicious patients should be revoked timely due to misbehaviors. Additionally, they are vulnerable to malicious auditors, by colluding with the cloud server to cheat patients. In this paper, we propose a conditional identity privacy-preserving public auditing (CIPPPA) mechanism for cloud-based WBANs. CIPPPA is the first public auditing mechanism achieving conditional identity privacy of patients in WBANs, the real identity of a patient is unknown to anyone in cloud-based WBANs other than the private key generator (PKG). We attempt to integrate Ethereum blockchain into CIPPPA, which gives assistance to patients for validating malicious auditing behaviors. Formal security analysis and performance evaluation demonstrate that CIPPPA is practical for cloud-based WBANs.
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