Abstract
With cloud computing being integrated with wireless body area networks, the digital ecosystem called cloud-assisted WBAN was proposed. In cloud-assisted medical systems, the integrity of the stored data is important. Recently, based on certificateless public key cryptography, He et al. proposed a certificateless public auditing scheme for cloud-assisted WBANs. But He et al.’s scheme is not a scheme with privacy preserving. After many checks on some of the same data blocks, the auditor can derive these data blocks. In this paper, we propose a certificateless public auditing scheme with privacy preserving for cloud-assisted WBANs. In the proof phase of the proposed scheme, the proof information is protected from being directly exposed to the auditor. So, the curious auditor could not derive the data blocks. We also prove that the proposed scheme is secure in the random oracle model under the assumption that the Diffie-Hellman problem is hard, and we give a comparison of the proposed scheme with He et al.’s scheme in terms of security and computation cost.
Highlights
Advances in wireless communication technologies, microcontroller systems, and sensor technologies have enabled the design and development of wireless body area networks (WBANs) that are playing an increasingly important role in healthcare systems because of their ability to provide continuous measurements and to monitor a patient’s health status by using medical sensors implanted inside the patient’s body [1].To make a fast diagnosis and store and process sensing data in real time, cloud computing is being integrated with traditional WBANs to propose the digital ecosystem called cloud-assisted WBAN
We propose a certificateless public auditing scheme with privacy preserving
In the proof phase of the proposed scheme, the proof information is protected from being directly exposed to the auditor
Summary
Advances in wireless communication technologies, microcontroller systems, and sensor technologies have enabled the design and development of wireless body area networks (WBANs) that are playing an increasingly important role in healthcare systems because of their ability to provide continuous measurements and to monitor a patient’s health status by using medical sensors implanted inside the patient’s body [1]. After Ateniese et al.’s pioneering work [2], many auditing schemes were proposed [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18] These schemes were constructed on a public key cryptographic system; data users and the auditor need more storage space or computation cost in key management and verification. It is clear that the auditing schemes on the ID-based cryptography system will reduce the costs of the data users and the auditor. For patient privacy information process in cloud-assisted medical systems, IDbased public auditing schemes are not secure.
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