TY - JFULL AU - Marilyn Lim Chien Hui and Nabil Elmarzouqi and Chan Huah Yong PY - 2011/3/ TI - A Context-Aware based Authorization System for Pervasive Grid Computing T2 - International Journal of Computer and Information Engineering SP - 156 EP - 165 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/13572 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 50, 2011 N2 - This paper describes the authorization system architecture for Pervasive Grid environment. It discusses the characteristics of classical authorization system and requirements of the authorization system in pervasive grid environment as well. Based on our analysis of current systems and taking into account the main requirements of such pervasive environment, we propose new authorization system architecture as an extension of the existing grid authorization mechanisms. This architecture not only supports user attributes but also context attributes which act as a key concept for context-awareness thought. The architecture allows authorization of users dynamically when there are changes in the pervasive grid environment. For this, we opt for hybrid authorization method that integrates push and pull mechanisms to combine the existing grid authorization attributes with dynamic context assertions. We will investigate the proposed architecture using a real testing environment that includes heterogeneous pervasive grid infrastructures mapped over multiple virtual organizations. Various scenarios are described in the last section of the article to strengthen the proposed mechanism with different facilities for the authorization procedure. ER -