Peer-to-Peer Networking and Applications

, Volume 11, Issue 2, pp 235–251 | Cite as

Ownership-hidden group-oriented proofs of storage from pre-homomorphic signatures

  • Yujue Wang
  • Qianhong Wu
  • Bo Qin
  • Xiaofeng Chen
  • Xinyi Huang
  • Jungang Lou


In this paper, we study the problem of secure cloud storage in a multi-user setting such that the ownership of outsourced files can be hidden against the cloud server. There is a group manager for initiating the system, who is also responsible for issuing private keys for the involved group members. All authorized members are able to outsource files to the group’s storage account at some cloud server. Although the ownership of outsourced file is preserved against the cloud server, the group manager could trace the true identity of any suspicious file for liability investigation. To address this issue, we introduce and formalize a notion of ownership-hidden group-oriented proofs of storage (OPoS). We present a generic OPoS construction from pre-homomorphic signatures, and propose an OPoS instantiation by employing the Boneh–Boyen short signature. We show that the OPoS instantiation can be optimized using a polynomial commitment technique, so that the integrity auditing protocol would only take constant-size communication overheads by the cloud server. Theoretical and experimental analyses show that our OPoS instantiations are efficient and practical for enterprise-oriented cloud storage applications. Also, we show that the OPoS instantiations can be enhanced to safeguard against a dynamic set of corrupted members, as well as support batch integrity auditing mechanism.


Cloud storage Data outsourcing Proofs of storage Provable data possession Proofs of retrievability Public auditability 



This work was partially supported by the Natural Science Foundation of China (Nos. 61672083, 61672083, 61370190, 61272501, 61202465, 61402029, 61472429, 61202465, 61532021), by the Beijing Natural Science Foundation (No. 4132056) and by the Guangxi natural science foundation (2013 GXNSFBB053005).


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Yujue Wang
    • 1
    • 2
  • Qianhong Wu
    • 3
    • 4
    • 5
  • Bo Qin
    • 6
    • 7
  • Xiaofeng Chen
    • 7
  • Xinyi Huang
    • 8
  • Jungang Lou
    • 9
  1. 1.School of Information SystemsSingapore Management UniversitySingaporeSingapore
  2. 2.Network and Data Security Key Laboratory of Sichuan Province, University of Electronic Science and Technology of ChinaChengduChina
  3. 3.School of Electronic and Information EngineeringBeihang UniversityBeijingChina
  4. 4.State Key Laboratory of CryptologyBeijingChina
  5. 5.State Key Laboratory of Information Security, Institute of Information EngineeringChinese Academy of SciencesBeijingChina
  6. 6.School of InformationRenmin University of ChinaBeijingChina
  7. 7.State Key Laboratory of Integrated Services NetworksXidian UniversityXi’anChina
  8. 8.School of Mathematics and Computer ScienceFujian Normal UniversityFuzhouChina
  9. 9.School of Information EngineeringHuzhou UniversityHuzhouChina

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