A lightweight multi-factor secure smart card based remote user authentication scheme for cloud-IoT applications

With the rapid spread of cloud computing and ever increasing big data generated by Internet of Things (IoT), remote user authentication poses the biggest challenge. Internet of Things is a paradigm where every device in the Internet Infrastructure (II) is interconnected into a global dynamic expanding network. This paper proposes a novel remote user authentication scheme for cloud-IoT applications. The scheme is lightweight and robust to attacks and also has low computational overhead. The proposed scheme satisfies the desired essential attributes of security. A formal verification performed using AVISPA tool confirms the security of the proposed scheme.