Download now Free registration required
Location Based Services (LBS) are becoming increasingly important to the success and attractiveness of next generation wireless systems. However, a natural tension arises between the need for user privacy and the flexible use of location information. In this paper the authors present a framework to support privacy enhanced location based services. They classify the services according to several basic criteria and the authors propose a hierarchical key distribution method to support these services. The main idea behind the system is to hierarchically encrypt location information under different keys, and distribute the appropriate keys only to group members with the necessary permission.
- Format: PDF
- Size: 1551.6 KB