Towards Trust Engineering for Opportunistic Cloud Services: A Systematic Review of Trust Engineering in Cloud Computing

The systematic review methodology has been employed to review trust related studies in cloud computing. It was observed that trusted computing technologies and reputation based approaches are the main approaches to trust engineering in cloud computing. Also, trusted third party approaches and the deployment model play a significant role in enhancing trust between service providers and consumers. It was observed that the concept of trust is used loosely without any formal specification in cloud computing discussions and trust engineering in general. As a first step towards addressing this problem, we have contextualized the formal trust specification in multi-agent environments for cloud computing.