A Watermark-Based In-Situ Access Control Model for Image Big Data

Jinyi Guo, Wei Ren, Yi Ren and Tianqing Zhu
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Jinyi Guo: School of Computer Science, China University of Geosciences, Wuhan 430074, China
Wei Ren: School of Computer Science, China University of Geosciences, Wuhan 430074, China
Yi Ren: School of Computing Science, University of East Anglia, Norwich NR4 7TJ, UK
Tianqing Zhu: School of Software, University of Technology Sydney, Ultimo, Sydney, NSW 2007, Australia

Future Internet, 2018, vol. 10, issue 8, 1-14

Abstract: When large images are used for big data analysis, they impose new challenges in protecting image privacy. For example, a geographic image may consist of several sensitive areas or layers. When it is uploaded into servers, the image will be accessed by diverse subjects. Traditional access control methods regulate access privileges to a single image, and their access control strategies are stored in servers, which imposes two shortcomings: (1) fine-grained access control is not guaranteed for areas/layers in a single image that need to maintain secret for different roles; and (2) access control policies that are stored in servers suffers from multiple attacks (e.g., transferring attacks). In this paper, we propose a novel watermark-based access control model in which access control policies are associated with objects being accessed (called an in-situ model). The proposed model integrates access control policies as watermarks within images, without relying on the availability of servers or connecting networks. The access control for images is still maintained even though images are redistributed again to further subjects. Therefore, access control policies can be delivered together with the big data of images. Moreover, we propose a hierarchical key-role-area model for fine-grained encryption, especially for large size images such as geographic maps. The extensive analysis justifies the security and performance of the proposed model.

Keywords: access control; watermark; image; big data (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2018
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