A trust model in cloud computing based on fuzzy logic

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 paper, 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 cloud environment, thus increasing the effectiveness of the system. QoS parameters such as turnaround time, availability and reliability are taken for trust evaluation.