Privacy and Ownership Preserving of Outsourced Medical Data

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 spe...

• Type: Conference
• Year: 2005
• Where: ICDE
• Authors: Elisa Bertino, Beng Chin Ooi, Yanjiang Yang, Robert H. Deng
• Keywords: Data Usefulness, Database, Generalization Attack, ICDE 2005, Medical Data