A Novel Watermark-Based Access Control Model for Digital Imagines

摘要

With the development of digital image processing and big data analysis, there exist massive digital images that can be obtained by ordinary online users. However, regarding to the volume of data and the lack of access control embedded within digital images, some images may impose risks of leakage and exposure. Especially, some images need to keep secret totally or at least only can be accessed partially. Those are not be classified and protected with a subtle manner or accessed by fine-grained privileges. In addition, recent most access control strategies separate control lists from accessed objects, so that the execution of access control relies on the networking links to remote servers. Sometimes remote servers may be available, thus the control will be hindered. Moreover, it is not easy to share and distribute a large volume of data together with their access control policies on different servers. In this paper, we propose a novel access control model based on invisible watermarks, where embed access control policies. This model realizes the marriage of accessing objects and access control strategies, and can be delivered together with big data objects such as digital images.