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This paper introduces a new framework for data hiding security. Contrary to the existing ones, the approach introduced here is not based on probability theory. In this paper, a scheme is considered as secure if its behavior is proven unpredictable. The objective of this study is to enrich the existing notions of data hiding security with a new rigorous and practicable one. This new definition o...

With the ever increasing pervasiveness of devices with functionality to provide location based services comes the increased importance and reliance upon those services to provide user privacy and security. Many techniques to facilitate privacy and security in mobile and fixed networks have been developed, but surveys of user’s show that this area still has a lot of work left to do to satisfy pr...

In this paper we introduce a novel community service based on personal symbolic locations. Users can share their location with other people using simple textual distribution mechanisms without the need of a geographic map display service. Small communities can set up a light-weight infrastructure and do not need to send private locations to big central service centres.

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We propose a framework that supports user-friendly configuration of a new location sensor system and its integration with a location manager. The proposed framework abstracts the diversity of heterogeneous sensor technologies using adapters that provide a common interface to the location manager. Configuration of a location sensor system requires information provided by the vendor of the locati...