Research on Trust-Role Access Control Model in Cloud Computing

In order to ensure the security of data in cloud computing, a trust-role-based hybrid cloud computing access control model is proposed based on the combination of role-based and trust-based access control models. The model introduces the calculation of trust based on the role-based access control, that is, the user needs to verify the trust value in order to obtain the permission to access the data. Through the application in the local business system, it shows that the model can effectively solve the user’s legitimate access to the data in the cloud, that is, to protect the security of the data in the cloud. The trust-based access control model has good advantages in terms of system throughput and storage space. As the number of user requests increases, both access control methods increase significantly in terms of throughput, but when the number of user requests reaches 10, the system throughput of both access control methods decreases, but based on trust - The role’s access control method is always larger than the role-based access control method in terms of throughput, which roughly increases the total amount by about ten percent.