2019 Issue 7 Information and Computer China & Network and Communication Technology Research on Blockchain-Based Internet of Things Security Technology Lin 㛃 (National Computer Network and Information Security Management Center Fujian Branch, Fuzhou, Fujian) Abstract: In recent years, with the rise of the Internet of Things With the development of technology, with the introduction of the concept of blockchain, people have begun to apply blockchain-based IoT security technology to logistics, medical care, finance and other fields. The trust, security and privacy issues existing in the traditional Internet of Things can be effectively improved with the development of blockchain distributed database system technology, thus promoting the further development of the Internet of Things. Based on this, this article mainly discusses the characteristics of blockchain-based IoT security technology and related issues in the development process of the IoT, and further elaborates on the research and application of blockchain-based IoT security technology. Keywords: Blockchain; Internet of Things; Security Technology CLC Number: TP391.44; TN915.08 Document Identification Code: A Article Number: 1003-9767 (2019) 07-165-Based on Blockchain (China): Over the Years , with the emergence of blockchain, blockchain-based blockchain has begun to be applied to , , , etc. The trust can be achieved through blockchain and thus achieved. Based on this, this paper proposes block-based and block-sum based. Keywords: Blockchain; The development status of the Internet of Things is of great importance. The Internet of Things is the main driving force for the future technological development of the world.
With the continuous rise of the Internet of Things, the national economy continues to grow. As a strategic emerging industry, the national government attaches great importance to it. By strengthening further research on common protocols and standards, the country will enable the Internet of Things to connect different fields in different industries and achieve resource sharing. Through continuous innovation and improvement of solutions, we will continue to improve traditional industries, improve people's livelihood service capabilities, and improve the quality and level of urban and social management. Most technology companies invest resources in developing IoT technology to drive the continuous development of technology. With the application of 5G technology, the connection range of the Internet of Things has expanded and its coverage has expanded. However, there are still huge problems with IoT. The cost of hundreds of billions of IoT devices is increasing, and there is a risk of leakage of user privacy data. The current Internet of Things cannot collaborate autonomously and cannot give full play to the commercial value of the Internet of Things [1]. 2 Blockchain Technology 2.1 Definition of Blockchain Blockchain technology is mainly a point-to-point distributed database system. The consensus algorithm of this system can ensure data consistency between nodes, and the encryption algorithm ensures data security and privacy. At the same time, by adding a chained data structure, an open, transparent, and non-tamperable technical system can be built. 2.2 Blockchain architecture Blockchain architecture includes underlying transaction data, narrow distributed ledgers, important consensus mechanisms, complete and reliable distributed networks, and distributed applications on the network. The innovation of the blockchain architecture lies in the tamper-proof blockchain data structure, distributed network consensus mechanism and flexible smart contracts [2]. About the author: Lin 㛃 (1985—), female, from Fuzhou, Fujian, master's degree candidate, engineer. Research direction: information security. — 165 —
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