Enhancing Security of Mobile Cloud Computing by Trust- and Role-Based Access Control

Algorithm 1

User Behaviour.

	Step 1: the organization sets the trust threshold value, i.e., , and the initial weights are , , , and .
	Step 2: initially, all the users are assigned with trust equal to one. That is, all the users are completely trustworthy.
	Step 3: compute each user’s overall trust value OTV. .
	Step 4: compute the usability of each parameter to assign priority.
	Update the weight values as .
	Step 5: compute the average trust value (ATV) by using an exponential weighted moving average method with previous trust and current computed trust.
	Step 6: compare the ATV of each user with the threshold value, i.e., .
	Step 7: if then the malicious user or reputed user.
	Step 8: return a malicious or a reputed user.