Internet of things (IoT) is collection of smart objects that senses real environment and gives response instantly while connected to a network. IoT and smart cities are implemented in every field of life including home, offices, healthcare centers, agriculture, waste management, transport management and environmental monitoring to make them smart. There are many benefits of implementing IoT in real environment but it raises various issues and challenges including security, privacy and heterogeneous nature of objects. Further, there is not any common communication standard for this purpose. Many traditional approaches are proposed by researchers which do not address these issues completely in a real sense. In this paper, we have presented a survey of existing work focusing on security and privacy issues in applications of IoT in smart cities. Finally, a problem is formulated based on identified issues for our future work.

INTRODUCTION

In the Internet of things (IoT), smart node, appliances, actuators, Smartphone, wearable devices are connected through internet in order to share information among all the nodes to generate results. Although IoT have many benefits but there are its security threats and drawbacks in real time applications to connect them and to secure reliable communication within a network through firewall considering mobility of smart objects. Quantum lifecycle management (QLM) is a standard providing standard interface to all the devices to enable secure communication and transfer data without any security threat which allows real time communication easier, secure and faster [1]. Traditional approach where bottom up technique is used to aggregate and implement is used for smart objects. In [2], author proposed top down Sensing and Actuation as a Service (SAaaS) approach for resources abstraction providing interface to access and communicate with other smart nodes. Author has emphasized on details and considered every aspect of system domain, problems and its solution. The approach is validated and implemented using mobile devices. In most of the existing work in applications of IoT in smart cities, security and privacy are not fully addressed. In this paper, a critical analysis of literature review in this area is done. Weaknesses of existing work are identified. Problem formulation is done for our future work. Rest of the paper is structured as below. In section II, an introduction and importance IoT is presented. Issues in modeling of smart cities are addressed in section III. Related work is discussed in section IV. Problem for our future work is formulated in section V. Finally, conclusion and future work are given in section VI.