Paper 2012/365

Public Auditing for Ensuring Cloud Data Storage Security With Zero Knowledge Privacy

Wang Shao-hui, Chen Dan-wei, Wang Zhi-wei, and Chang Su-qin

Abstract

In cloud storage service, clients upload their data together with authentication information to cloud storage server. To ensure the availability and integrity of clients' stored data, cloud server(CS) must prove to a verifier that he is actually storing all of the client's data unchanged. And, enabling public auditability for cloud storage is of critical importance to users with constrained computing resources, who can resort to a third party auditor (TPA) to check the integrity of outsourced data. However, most of the existing proofs of retrievability schemes or proof of data possession schemes do not consider data privacy problem. Zero knowledge privacy requires TPA or the adversary can not deduce any information of the file data from auditing system. In this paper, after giving a new construction of a recently proposed cryptographic primitive named aggregatable signature based broadcast (ASBB) encryption scheme, we present an efficient public auditing scheme with zero knowledge privacy. The new scheme is as efficient as the scheme presented by Shacham and Waters without considering privacy and is secure in the random oracle model.

Metadata
Available format(s)
PDF
Publication info
Published elsewhere. no
Keywords
Cloud ComputingCloud StoragePublic AuditingZero-Knowledge PrivacyIntegrity
Contact author(s)
wangshaohui @ njupt edu cn
History
2012-09-17: revised
2012-06-29: received
See all versions
Short URL
https://ia.cr/2012/365
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2012/365,
      author = {Wang Shao-hui and Chen Dan-wei and Wang Zhi-wei and Chang Su-qin},
      title = {Public Auditing for Ensuring Cloud Data Storage Security With Zero Knowledge Privacy},
      howpublished = {Cryptology {ePrint} Archive, Paper 2012/365},
      year = {2012},
      url = {https://eprint.iacr.org/2012/365}
}
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