@article{(Open Science Index):https://publications.waset.org/pdf/13572,
	  title     = {A Context-Aware based Authorization System for Pervasive Grid Computing},
	  author    = {Marilyn Lim Chien Hui and  Nabil Elmarzouqi and  Chan Huah Yong},
	  country	= {},
	  institution	= {},
	  abstract     = {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.},
	    journal   = {International Journal of Computer and Information Engineering},
	  volume    = {5},
	  number    = {2},
	  year      = {2011},
	  pages     = {157 - 165},
	  ee        = {https://publications.waset.org/pdf/13572},
	  url   	= {https://publications.waset.org/vol/50},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 50, 2011},