Context-Aware Trust-Based Access Control for Ubiquitous Systems

摘要

The ubiquitous computing and context-aware applications experience at the present time a veryimportant development. This has led organizations to open more of their information systems,making them available anywhere, at any time and integrating the dimension of mobile users.This cannot be done without taking into account thoughtfully the access security: a pervasiveinformation system must henceforth be able to take into account the contextual features toensure a robust access control. In this paper, access control and a few existing mechanismshave been exposed. It is intended to show the importance of taking into account context during arequest for access. In this regard, our proposal incorporates the concept of trust to establish atrust relationship according to three contextual constraints (location, social situation and time)in order to decide to grant or deny the access request of a user to a service.