Objects Specific Role: An Approach to Solving Roles Redundant Problem

In many organizations, there are projects of the same kind continually being created to work on. When role-based access control (RABC) is applied to resources' access control in these organizations, a problem arises, that is, the coming projects make a series of similar roles that are with same functions be created continually, and this makes roles administration hard. The similar roles are different because they are for different projects although they are of the same kind, so merging the similar roles into a single role doesn't work. We call this problem as roles redundant problem, and to solve it, we extend the RBAC model using the idea of objects specific role, by which we can simplify roles administration, and make sure that the difference between the original similar roles still holds.