Abstract
Data integrity has become an extremely important security issue in cloud-assisted wireless body area networks (WBANs). As accurate medical diagnostic analysis is heavily based on outsourced electronic medical data in cloud storage, any corrupted data may lead to fateful consequences. Data auditing contributes to medical data integrity verification, but most of existing data auditing schemes are vulnerable to attackers equipped with practical quantum-computing devices, which are very likely to be invented in the near future. Besides, in many scenarios, a patient has no capability to execute medical data integrity verification personally, he/she has to specify a verifier to complete data auditing. To this end, we present an efficient lattice-based designated verifier auditing scheme (LDVAS), which could be well deployed in cloud-assisted WBANs. In particular, LDVAS enables a patient to designate a unique verifier to execute data auditing in post-quantum secure settings, and any others cannot fulfil such task without the approval of the patient. We formally prove the security of LDVAS based on the hardness assumptions of lattice-based problems. The performance evaluation demonstrates the high efficiency and feasibility of LDVAS on the side of the designated verifier.
Highlights
Nowadays, due to the fast development of wireless medical sensors and communication technologies, wireless body area networks (WBANs) have been considered as a key technique for improving the quality of medical and health services [1], [2]
We propose the first lattice-based designated verifier auditing scheme (LDVAS) for electronic medical data in cloud-assisted WBANs, and LDVAS is secure against quantum-computing attacks
ROBUSTNESS Theorem 2: It is computationally infeasible for any other party excepts a designated third-party auditor (TPA) to check the integrity of the outsourced medical data stored in the cloud server associated with WBANs
Summary
Due to the fast development of wireless medical sensors and communication technologies, wireless body area networks (WBANs) have been considered as a key technique for improving the quality of medical and health services [1], [2]. We propose the first lattice-based designated verifier auditing scheme (LDVAS) for electronic medical data in cloud-assisted WBANs, and LDVAS is secure against quantum-computing attacks. According to the work of Shacham and Waters [35], Wang et al [12] formally presented a pairing-based public auditing scheme for cloud storage, which relies on a third-party auditor (TPA) to fulfil the data integrity verification tasks on behalf of the data owner through challenge and response process. GenProof: The is a PPT algorithm which is performed by the cloud server It takes as inputs a medical data file F, the corresponding set of signatures , the medical data file tag τ , and the challenge message (chal, IDTPA), outputs a response auditing proof information P to the designated TPA.
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