Game Theoretical Study on a Client-Controlled Deduplication Scheme

Liang, Xueqin; Yan, Zheng; Ding, Wenxiu; Deng, Robert H.

doi:10.1109/smartworld-uic-atc-scalcom-iop-sci.2019.00216

Cited by 2 publications

(1 citation statement)

References 39 publications

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“…In this case, confirming deduplication happened already at the CSP to get an offer of low storage charge becomes essential, our paper aims to solve this issue. For motivating the adoption of our scheme, in another line of our work, we study how to make all related stakeholders to accept and use deduplication schemes by applying game theory to design proper incentive or punishment mechanisms in three cases: client-controlled deduplication [35], [36], server-controlled deduplication [12] and hybrid deduplication [13]. Since our scheme design is built upon the one in [14], belonging to server-controlled deduplication, the incentive mechanism [12] suitable for the server-controlled deduplication schemes can be applied to motivate scheme adoption.…”

Section: Further Discussionmentioning

confidence: 99%

VeriDedup: A Verifiable Cloud Data Deduplication Scheme With Integrity and Duplication Proof

Bai

Yan

et al. 2023

IEEE Trans. Dependable and Secure Comput.

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Data deduplication is a technique to eliminate duplicate data in order to save storage space and enlarge upload bandwidth, which has been applied by cloud storage systems. However, a cloud storage provider (CSP) may tamper user data or cheat users to pay unused storage for duplicate data that are only stored once. Although previous solutions adopt message-locked encryption along with Proof of Retrievability (PoR) to check the integrity of deduplicated encrypted data, they ignore proving the correctness of duplication check during data upload and require the same file to be derived into same verification tags, which suffers from brute-force attacks and restricts users from flexibly creating their own individual verification tags. In this paper, we propose a verifiable deduplication scheme called VeriDedup to address the above problems. It can guarantee the correctness of duplication check and support flexible tag generation for integrity check over encrypted data deduplication in an integrative way. Concretely, we propose a novel Tag-flexible Deduplication-supported Integrity Check Protocol (TDICP) based on Private Information Retrieval (PIR) by introducing a novel verification tag called note set, which allows multiple users holding the same file to generate their individual verification tags and still supports tag deduplication at the CSP. Furthermore, we make the first attempt to guarantee the correctness of data duplication check by introducing a novel User Determined Duplication Check Protocol (UDDCP) based on Private Set Intersection (PSI), which can resist a CSP from providing a fake duplication check result to users. Security analysis shows the correctness and soundness of our scheme. Simulation studies based on real data show the efficacy and efficiency of our proposed scheme and its significant advantages over prior arts.

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