A Novel Trust Based Access Control Model for Cloud Environment

Abstract

Cloud computing is a service oriented technology which offers 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. In order to protect the cloud environment from malicious users, we proposed a novel trust based access control model. The proposed model authorize the user based on user trust value before entering to cloud environment. The user must be trusted before accessing the resources and the resources must be trusted before providing the services to the user. In this paper, we evaluate the trust value of both user and cloud resources. The user trust value is evaluated based on the user behaviour parameter and the resource trust value is evaluated based on the Service Level Agreement (SLA) parameter. If the trust value of both users and cloud resources are more than their threshold value then they are considered as trusted. We implement the proposed model using java and oracle as database server. The implementation result shows the trust value of different type of users and CSP and compare with the QoS model. The proposed model performs better than QoS model in terms of Rate of Successful Transaction (RST).