Internet of Things equipment resource access control method based on hierarchical blockchain

Abstract

The invention relates to an Internet of Things equipment resource access control method based on a hierarchical blockchain, and belongs to the field of Internet of Things equipment resource access control. The method comprises the following steps: constructing global and local blockchain networks and deploying a smart contract; determining an Internet of Things equipment clustering policy by using a DA algorithm; formulating, by the Internet of Things equipment, an access control policy, generating an access control message and sending the access control message to a cluster head node; calling, by the cluster head node, the smart contract to store the access control policy in the local blockchain network; forwarding, by the cluster head node, the access control message to a gateway node; and calling, by the gateway node, the smart contract to store the access control policy in the global blockchain network; sending, by the cluster head node, an equipment resource identifier message to the gateway node; calling, by the gateway node, the smart contract to store the equipment resource identifier in the global blockchain network; and performing, by the cluster head node, identity authentication on the first Internet of Things equipment so as to select the intra-domain / inter-domain access control machine to realize equipment resource access.

Description

technical field [0001] The invention belongs to the field of Internet of Things device resource access control, and relates to a layered blockchain-based method for controlling Internet of Things device resource access. Background technique [0002] With the rapid development of Internet of Things technology, various Internet of Things applications such as smart wearable devices, smart home appliances, intelligent connected cars, smart robots, and smart medical care have been widely popularized, and trillions of Internet of Things devices will be connected to the network . The number of IoT devices is huge and they are deployed in a distributed manner. While related applications bring convenience to people's production and life, they also generate security risks. Reliable and effective access control of device data resources is facing huge challenges. The data interaction and information communication of large-scale Internet of Things devices may make it difficult to guaran...

AI Technical Summary

Problems solved by technology

However, it is difficult to guarantee the high trustworthiness of centralized entities in IoT applications, and at the same time, it conflicts with the increasing privacy protection needs of users.

Although the CapBAC solution adopts a distributed architecture, which avoids the single point of failure problem and the untrustworthy central entity problem in the centralized architecture, this method may be exploited by malicious attackers. Data security for order-of-magnitude devices

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