Novel Trust Based Access Control Model for Cloud Environment

Abstract

Cloud computing is a service oriented technology which effers the services (IaaS, PaaS, and SaaS) as a utility over the Internet. Since cloud computing is one of the most popular form of internet application, the resources and services in cloud environment is more vulnerable to security threats and attacks. Inorder to protect the cloud environment from malicious users, we proposed a novel trust based access control model. This model authorize the user based on user trust value, before accessing the cloud resources. The user must be trusted before accessing the resources and the resources must be trusted before providing the service to the user. In this thesis, we evaluate the trust value of both user and cloud resources. The user trust value is evaluated based on the user behaviour parameter and resource trust value is evaluated based on the Service Level Agreement (SLA) parameter. If the trust value of both user and cloud resource are more than their trust threshold value, then they are considered to be trusted. Simulation results shows that proposed model performs better than QoS models in terms of Rate of Successful Transactions (RST) and correctness of result (COR).