Trust Management Approach for Securing the Services Access:Telecom Operators Collaborations in IMS Network
Keywords:
IMS network, trust management, collaboration, trust criteria, privacy, telecom operator, service provider, decision making, AHPAbstract
IP Multimedia Subsystem (IMS) network presents a new generation in the telecommunication infrastructure by providing a variety of services whatever the used technologies. Therefore, to make the customers satisfied, their telecom operator provides them several services according to their attached user profile (subscription type). However, some services are not hosted by the home operator; the service providers are responsible to present these services to the customers. In this case, the operator contacts the concerned provider for requesting the access to the desired services. In fact, this access may arise some security issues which affect the customer privacy and the services security. In this paper,we project our approach, Tr-OrBAC, in the context of collaboration between service providers and telecom operators.We discuss the case when the customer wishes to access to a service hosted by an external service provider. We present the encountered security problems. Then, we depict and we detail the functioning of our approach to resolve these problems.
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