PPTPS: Building privacy-preserving auditable service with traceable timeliness for public cloud storage

Many works are designed to improve efficiency or enhance security and privacy of publicly-auditable cloud storage. However, building timeliness for cloud storage has not been well studied. Few works presented time-sensitive cloud storage and only focused on specific issues, such as the earliest crea...

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Bibliographic Details
Published in:PloS one 2022-10, Vol.17 (10), p.e0276212-e0276212
Main Authors: Li, Li, Lan, Xiao, Chen, Mali, Luo, Ting, Chen, Li, Wang, Yangxin, Chen, Yumeng
Format: Article
Language:English
Subjects:
Auditing
Audits
Blockchain
Cloud computing
Computer and Information Sciences
Computer security
Cryptography
Cybersecurity
Data integrity
Data security
Education
Efficiency
Engineering and Technology
Interactive learning
Methods
Physical Sciences
Privacy
Research and Analysis Methods
Safety and security measures
Security
Storage
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Summary:Many works are designed to improve efficiency or enhance security and privacy of publicly-auditable cloud storage. However, building timeliness for cloud storage has not been well studied. Few works presented time-sensitive cloud storage and only focused on specific issues, such as the earliest creation time of files or resistance against a procrastinating auditor. Therefore, there leaves an absence of building traceable timeliness for publicly-auditable cloud storage. In this paper, we propose a solution PPTPS to build Privacy-Preserving auditable service with Traceable timeliness for Public cloud Storage. First, we use the security properties of the blockchain to provide a time-stamp for each phase. It enables the timeliness of cloud storage. Second, we construct efficient publicly-verifiable cloud storage. Third, a customized random mask solution is proposed to prevent privacy leakage during the auditing phase. Moreover, we formally proved the security of PPTPS. At last, experimental results demonstrate that PPTPS is economically sound and technically viable.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0276212