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Journal of Electrical and Computer Engineering
Volume 2016 (2016), Article ID 3219042, 7 pages
Research Article

A Privacy-Preserving Outsourcing Data Storage Scheme with Fragile Digital Watermarking-Based Data Auditing

1School of Computer and Software, Nanjing University of Information Science and Technology, Nanjing 210044, China
2Jiangsu Engineering Centre of Network Monitor, Nanjing University of Information Science and Technology, Nanjing 210044, China

Received 9 December 2015; Revised 6 March 2016; Accepted 12 April 2016

Academic Editor: Isao Echizen

Copyright © 2016 Xinyue Cao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Cloud storage has been recognized as the popular solution to solve the problems of the rising storage costs of IT enterprises for users. However, outsourcing data to the cloud service providers (CSPs) may leak some sensitive privacy information, as the data is out of user’s control. So how to ensure the integrity and privacy of outsourced data has become a big challenge. Encryption and data auditing provide a solution toward the challenge. In this paper, we propose a privacy-preserving and auditing-supporting outsourcing data storage scheme by using encryption and digital watermarking. Logistic map-based chaotic cryptography algorithm is used to preserve the privacy of outsourcing data, which has a fast operation speed and a good effect of encryption. Local histogram shifting digital watermark algorithm is used to protect the data integrity which has high payload and makes the original image restored losslessly if the data is verified to be integrated. Experiments show that our scheme is secure and feasible.