Abstract
Cloud computing is one of the trending technologies in the present world. As cloud allows its users to pay for what they use, it has grown up large. These days mostly every big enterprise has its own cloud. As the number of users using the cloud is increasing day by day, there is a need for improving scalability. To overcome this problem inter cloud communication is suggested. Through this we can achieve scalability and a lot of users can be given space. During inter cloud communication, if both the clouds have different access control policies then there would be certain disturbances. This paper comes out with a new architecture which allows two clouds which have different architectures, role based access control (RBAC) and Discretionary access control (DAC) to share resources. This is implemented using an access matrix called 'Inter cloud access matrix' and 'access table' which helps in analyzing the access given to the user either with a single role or multiple roles. This paper also comes out with a new technique called 'colored roles', where each role is associated with a unique color.
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