A MATHEMATICAL MODEL FOR ACCESS CONTROL THROUGH TRUST MANAGEMENT IN UBIQUITOUS COMPUTING

In the ubiquitous computing environment of wireless access control, access is granted on having successful
interactions with other devices/nodes/agents. Consequently, the wireless technologies further extend the
association between devices to interact with each other with respect to provide access control. For mobile
nodes, many times associations are volatile in nature. There is always a risk associated with such interactions
when there is no trust amongst them. From a security perspective, there is a requirement for a proper
mechanism to build trust so that nodes can interact with each other for the safe sharing of information. Many
researchers have proposed trust models in which the credibility, mobility, and reliability of requester agents are
not considered. In this study, we proposed the trust calculation model in ubiquitous computing by considering
parameters like credibility, transitivity, reliability, and mobility. This trust calculation model can be
incorporated in Ubiquitous Computing for better decision making for access control.