A Trust Model in cloud computing based on Fuzzy Logic

Abstract

It is common to hear organizations-big or small are moving to cloud computing for its scalability and cost savings. But, how do you decide which cloud provider to trust? Trust is a vital factor, especially for service oriented systems in the area of Information Technology and Security. Several issues have been raised by enterprises and individuals concerning the reliability of the cloud resources. In cloud computing, trust helps the consumer to choose the service of a cloud provider for storing and processing their sensitive information. In this thesis, a trust model is proposed which uses Quality of Service parameters (QoS) to evaluate trust. The fuzzy nature of trust has encouraged us to use fuzzy logic to calculate trust value of a provider in a cloud environment, thus increasing the effectiveness of the system. QoS parameters such as turnaround time, availability and reliability are taken for trust evaluation. The proposed model has been simulated using CloudSim and NetBeans IDE. Experimental analysis of the proposed approach has proved the better efficiency of the system. A comparison of the proposed model and weighted model is also presented.