Abstract
with rapid development and increase in the amount of available resources in E-learning platforms, the need to design new architecture for such systems has become inevitable to improve the search quality and simplifying ways to take online courses. The integration of multi-agent systems has played a very important role in developing open, interactive and distributed learning systems. A lot of research in E-learning and multi-agent system have been put into developing infrastructure and providing content, security and trust issues have hardly ever been considered worth knowing that security issues may endanger the success of these platforms. The application of a control access policy, as one of the most important aspects of security, in E-learning platform based on multi agent systems , plays an important role to secure interaction with agents/users and reinforcing it with the integration of trust level .The work of this paper is to encode a new access control model developed in previous works based on ‘’ role based access control model ‘’ and trust level, on ‘’Organization based access control model’’ to improve the security level in E-learning platforms based on multi-agent systems. The encoded model is implemented and evaluated by “MotOrbac” tool, in order to define its validity context and limitations for a large and extended deployment.
Highlights
INTRODUCTIONThe definition of E-Learning is understood as a means of teaching throughout the online internet technology , it is a convenient and inexpensive way to gain knowledge and learn ; It has become the need of the hour since more and more people are taking online courses; With the development of Information Technology, E-learning is developing rapidly; It is does support teaching and learning, and some Intelligence interaction among the collaborative team members[1], to design such complex platform, designers use one of the emerging technologies in distributed Environment: Agent based technology , Multi agent system in E-learning system makes a great change in the society because the conventional education system need the presence of the student and the instructor at the same time, same place and at the same interval of time, which is somehow difficult to manage every time
The work is to encode a new model that we developed in previous work [9] based on the two access control model‟‟ TrustBAC model‟‟ [10] and” Dynamic role based access control (RBAC) with trust- satisfaction and reputation for multi-agent systems” [11]; the main goal of this model is to incorporate the advantages of both to improve the highest degree of security in E-learning platforms based on multi-agent systems
We recall that a context is a condition over the environment, to control the activation context, the systems has to give some information to check if the condition is satisfied or not worth knowing that there is many type of context in ORBAC model, the following figure resume and presents the taxonomy of contexts and describes all the information necessary that the system should be able to provide for their evaluating [25]
Summary
The definition of E-Learning is understood as a means of teaching throughout the online internet technology , it is a convenient and inexpensive way to gain knowledge and learn ; It has become the need of the hour since more and more people are taking online courses; With the development of Information Technology, E-learning is developing rapidly; It is does support teaching and learning, and some Intelligence interaction among the collaborative team members[1], to design such complex platform, designers use one of the emerging technologies in distributed Environment: Agent based technology , Multi agent system in E-learning system makes a great change in the society because the conventional education system need the presence of the student and the instructor at the same time, same place and at the same interval of time, which is somehow difficult to manage every time. As we know to achieve a satisfactory level of security, it is necessary to define a security policy that meets the needs of the application, several formalisms have been proposed and developed during last years to overcome the limitations of the models above depending on the nature of systems and their development witch make the management of the different levels of access rights to multiple types of resources by different and distributed users more complex : DAC [4], MAC[5], RBAC [6], TBAC[7] or TMAC[8].
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