Internet of Things security access control method based on blockchain and fog node reputation

Abstract

The invention discloses an Internet of Things security access control method based on a blockchain and fog node reputation. The method specifically comprises the following steps: carrying out fog node and cloud node registration, cloud service and Internet of Things equipment registration; enabling the Internet of Things equipment to initiate a request signal for accessing the cloud service to the proxy fog node; enabling the fog node to verify the identities of the Internet of Things equipment, the cloud node and the fog node after receiving the request signal of the Internet of Things equipment; detecting whether the reputation value of the fog node is qualified or not and whether the request behavior is legal or not, and if yes, sending a request of the fog node with a digital signature to the cloud node; enabling the cloud node to transmit the cloud service data to the server of the proxy fog node after verification; and enabling the server of the proxy fog node to transmit the data to the Internet of Things equipment. According to the invention, the Ethereum intelligent contract technology realizes decentration and expandable Internet of Things access control in a blockchain network, and the security of access control of Internet of Things equipment is ensured through a reputation mechanism and a behavior detection mechanism.

Description

technical field [0001] The invention belongs to the technical field of information security, and relates to an Internet of Things security access control method based on blockchain and fog node reputation. Background technique [0002] With the rapid development of IoT technology, the number of IoT devices is increasing exponentially. Although the Internet of Things technology has brought many conveniences to people's lives, the massive growth of Internet of Things devices has brought great challenges to the security and scalability of cloud computing. Traditional cloud computing access control is mostly based on centralized authorization methods, which are not only difficult to manage a large number of growing IoT devices, but also resource-constrained IoT devices are easily controlled by hackers and attack cloud servers (such as : distributed denial-of-service attack) causes a single point of failure and privacy disclosure of the system. [0003] Since the inherent new f...

AI Technical Summary

Problems solved by technology

However, in the Internet of Things environment, there is almost no research on cloud computing access control based on blockchain and fog computing. meaning and practical value

Images