Handling multifacets of trust management in cyber physical systems

Abstract

Trust should be learnt from history and context sensitive. It should not be absolute in nature. Due to the conglomeration of various technologies in a secure cyber physical system it is quite a challenge to handle trust issues in a cyber physical system. Trust management in cyber physical system is needed due to increase in the degree of autonomy, decentralized policies,dynamic environment, decision-making based on social rules,customs,laws,values, and ethics. This chapter brings light into the existing strategies already applied by few organizations, their inherent benefits and consequent shortcomings too. There are many factors contributing towards the establishment, expression, evaluation, maintenance of trustworthiness. In this chapter we advocate a novel framework for trust management which stands up to the research directions of how to build a unified framework for trust management, how to modify the way we compute trust, how to decide the right granularity for a trust model.