Abstract
With the fast development and expansion of the Internet of Things (IoT), billions of smart devices are being continuously connected, and smart homes, as a typical IoT application, are providing people with various convenient applications, but face security and privacy issues. The idea of Blockchain (BC) theory has brought about a potential solution to the IoT security problem. The emergence of blockchain technology has brought about a change of decentralized management, providing an effective solution for the protection of network security and privacy. On the other hand, the smart devices in IoT are always lightweight and have less energy and memory. This makes the application of blockchain difficult. Against this background, this paper proposes a blockchain model based on hypergraphs. The aims of this model are to reduce the storage consumption and to solve the additional security issues. In the model, we use the hyperedge as the organization of storage nodes and convert the entire networked data storage into part network storage. We discuss the design of the model and security strategy in detail, introducing some use cases in a smart home network and evaluating the storage performance of the model through simulation experiments and an evaluation of the network.
Highlights
The Internet of things (IoT) is a worldwide network of interconnected objects and humans, which through unique address schemes are able to interact with each other and cooperate with their neighbours to reach common goals
Due to the less energy and memory of most IoT devices, we propose a hypergraph-based blockchain model
By abstracting the blockchain network in a hypergraph, we considered each home as a node in the graph and used hypergraph theory to discount the network’s storage for records
Summary
The Internet of things (IoT) is a worldwide network of interconnected objects and humans, which through unique address schemes are able to interact with each other and cooperate with their neighbours to reach common goals. The primary purpose of the IoT is to share information acquired by objects, which reflects the manufacture, transportation, consumption and other details of people’s lives [1,2]. Most of these new networkable devices are designed to be lightweight and have less memory [3]. Total spending on endpoints and services reached almost 2 trillion dollars in 2017 with two-thirds of those devices found in China, North America and Western Europe
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