Outsourced Privately Verifiable Proofs of Retrievability via Blockchain

被引：4

作者：

Cui, Hui ^{[1
]}

Wan, Zhiguo ^{[2
]}

Gao, Rui ^{[3
]}

Wang, Huaqun ^{[4
]}

机构：

[1] Monash Univ, Fac IT, Clayton, Vic 3800, Australia

[2] Zhejiang Lab, Hangzhou 311121, Zhejiang, Peoples R China

[3] Nanjing Univ Posts & Telecommun, Cyberspace Secur, Nanjing 210003, Jiangsu, Peoples R China

[4] Nanjing Univ Posts & Telecommun, Sch Comp Sci, Nanjing 210023, Peoples R China

来源：

IEEE TRANSACTIONS ON DEPENDABLE AND SECURE COMPUTING | 2024年 / 21卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Servers; Cloud computing; Blockchains; Costs; Encryption; Smart contracts; Task analysis; proofs of retrievability; integrity; private verification; PROVABLE DATA POSSESSION; DEDUPLICATION;

D O I：

10.1109/TDSC.2023.3285218

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

Outsourced Proofs of Retrievability (OPoR) with private verification enables a third party verifier to periodically check cloud data on behalf of users. However, such a scheme requires the verifier to keep a copy of the user's data and generate tags for the data like the data owner. In other words, in addition to storing the data and tags from the user, the cloud server also needs to store tags uploaded by the verifier. To overcome this limitation, we propose a concrete construction of outsourced privately verifiable PoR (OPVPoR) without requiring the additional tag storage from the verifier. Furthermore, we extend the OPVPoR scheme to the multi-user setting and build a MOPVPoR scheme, where users storing the same data to the cloud server also share the tag information to further reduce the storage cost. Finally, we implement both schemes to evaluate their performance in practice.

引用

页码：1501 / 1514

页数：14

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