Title

Privacy and Ownership Preserving of Outsourced Medical Data

Publication Type

Conference Proceeding Article

Publication Date

4-2005

Abstract

The demand for the secondary use of medical data is increasing steadily to allow for the provision of better quality health care. Two important issues pertaining to this sharing of data have to be addressed: one is the privacy protection for individuals referred to in the data; the other is copyright protection over the data. In this paper, we present a unified framework that seamlessly combines techniques of binning and digital watermarking to attain the dual goals of privacy and copyright protection. Our binning method is built upon an earlier approach of generalization and suppression by allowing a broader concept of generalization. To ensure data usefulness, we propose constraining Binning by usage metrics that define maximal allowable information loss, and the metrics can be enforced off-line. Our watermarking algorithm watermarks the binned data in a hierarchical manner by leveraging on the very nature of the data. The method is resilient to the generalization attack that is specific to the binned data, as well as other attacks intended to destroy the inserted mark. We prove that watermarking could not adversely interfere with binning, and implemented the framework. Experiments were conducted, and the results show the robustness of the proposed framework.

Discipline

Information Security

Research Areas

Cybersecurity

Publication

Proceedings: 21st International Conference on Data Engineering, ICDE 2005, 5-8 April 2005, Tokyo, Japan

First Page

521

Last Page

532

ISBN

9780769522852

Identifier

10.1109/ICDE.2005.111

Publisher

IEEE Computer Society

City or Country

Los Alamitos, CA

Additional URL

http://dx.doi.org/10.1109/ICDE.2005.111