Overview of IoT Security Architecture

In the Internet of Things, services can be provisioned using centralized architectures, where central entities acquire, process, and provide information. Alternatively, distributed architectures, where entities at the edge of the network exchange information and collaborate with each other in a dynamic way, can also be used. In order to understand the applicability and viability of this distributed approach, it is necessary to know its advantages and disadvantages not only in terms of security and privacy challenges. The purpose of this paper is to show that IoT three-layer security logic architecture and the distributed approach has various challenges that need to be solved, but also various interesting properties and strengths. It also focuses on security issues such as privacy protection and intrusion detection, etc. We also propose a high-level security management scheme based on blockchain for different IoT devices in the full life cycle. It also summarizes the main causes of the deficiencies and security problems in existing research work.

I. Introduction

Since the International Telecommunication Union officially proposed the concept of Internet of Things (IoT)in 2005, technologies such as sensor networks, cloud computing, and microchips have matured over time, and the Internet of Things industry has also rapidly expanded. According to the latest statistics of the Statista portal, the number of connected devices has reached 17.6 billion in 2016 and is expected to exceed 30 billion by 2020. International Data Corporation predicts that the Internet of Things market will exceed $7 trillion by 2020. While the Internet of Things is developing at a rapid pace, its security is also facing severe challenges. At present, countries, enterprises and individuals have not established enough awareness of IoT security and privacy protection. The IoT security issue will not only bring property damage to users but also threaten the lives of users.