A new public remote integrity checking scheme with user and data privacy

Publication Type

Journal Article

Publication Date

1-2017

Abstract

With cloud storage, users can store their data files on a remote cloud server with a high quality on-demand cloud service and are able to share their data with other users. Since cloud servers usually are not regarded as fully trusted and the cloud data can be shared amongst users, the integrity checking of the remote files has become an important issue. A number of remote data integrity checking protocols have been proposed in the literature to allow public auditing of cloud data by a third party auditor (TPA). However, user privacy is not taken into account in most of the existing protocols. We believe that preserving the anonymity (i.e., identity privacy) of the data owner is also very important in many applications. In this paper, we propose a new remote integrity checking scheme which allows the cloud server to protect the identity information of the data owner against the TPA. We also define a formal security model to capture the requirement of user anonymity, and prove the anonymity of the proposed scheme. Moreover, we improve the existing security model for data privacy against the TPA, and show that an extended version of our protocol is secure under the strengthened security model.

Keywords

Cloud storage, Data integrity, Data privacy, Identity privacy, Public auditing

Discipline

Data Storage Systems | Information Security

Research Areas

Information Systems and Management

Publication

International Journal of Applied Cryptography

Volume

3

Issue

3

First Page

196

Last Page

209

ISSN

1753-0563

Identifier

10.1504/IJACT.2017.086232

Publisher

Inderscience

Additional URL

http://doi.org/10.1504/IJACT.2017.086232

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