Title: An improved redactable signature-based public auditing scheme for the COVID-19 cloud data

Authors: Mingyu Zhou; Xiong Zhang; Yuanhang Zhang; Liu Hao; Guangming Wu

Addresses: Key Laboratory of Information and Network Security, Engineering University of People's Armed Police, Xi'an, Shaanxi, China ' Key Laboratory of Information and Network Security, Engineering University of People's Armed Police, Xi'an, Shaanxi, China ' Key Laboratory of Information and Network Security, Engineering University of People's Armed Police, Xi'an, Shaanxi, China ' Key Laboratory of Information and Network Security, Engineering University of People's Armed Police, Xi'an, Shaanxi, China ' Key Laboratory of Information and Network Security, Engineering University of People's Armed Police, Xi'an, Shaanxi, China

Abstract: Li et al. in 2022 proposed a public cloud storage auditing scheme that supports sensitive data storage and editable signatures. Their scheme is illustrated with an example of cloud storage service in healthcare application. In this paper, we point out that the data block authentication tags in their scheme can be forged. We have designed a COVID-19 cloud data sharing public cloud storage auditing scheme based on redactable signatures in the context of COVID-19 cloud data. Finally, we gave a security analysis on how to enhance it to be more secure.

Keywords: cloud computing; data integrity auditing; cloud storage; bilinear mapping.

DOI: 10.1504/IJGUC.2025.145176

International Journal of Grid and Utility Computing, 2025 Vol.16 No.2, pp.128 - 137

Received: 24 Jan 2024
Accepted: 22 Mar 2024
Published online: 24 Mar 2025 *

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