Internet of Things (IoT) cross-domain authentication system and method based on block chain

Abstract

The invention belongs to the technical field of the Internet of Things (IoT) security authentication, and discloses an IoT cross-domain authentication system and an IoT cross-domain authentication method based on a block chain. The system comprises a network layer, a service layer and a user layer. The network layer is a block chain network, and is an allied block chain formed by each domain separately serving as a network node; the service layer is a distributed application intelligent contract developed based on a block chain network, and can execute a complex machine language; and the userlayer is based on a user interaction interface developed based on the node of each domain, for implementing binding of the authenticated domain and distribution of an authentication key. According tothe system and method provided by the invention, the cross-domain authentication system based on security of the block chain can be implemented, the distributed storage of authentication schemes is implemented, and the authentication schemes are recorded on the block chain in the form of an account book, so as to be unable to tamper.

Description

technical field [0001] The invention belongs to the technical field of Internet of Things security authentication, and in particular relates to a block chain-based Internet of Things cross-domain authentication system and method. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: With the wide application of the Internet of Things in smart home, smart medical care, Internet of Vehicles and other industries, a large amount of Internet of Things data is generated. However, most of the data of the Internet of Things is currently concentrated in a central domain environment, and the data between various domains has no Interaction, the Internet of Things data has problems such as simplicity, isolation, dispersal, fragmentation, etc., and the data sharing between IoT domains has received more and more attention, and the demand for data security sharing between IoT domains is increasing . The traditional cross-domain ...

AI Technical Summary

Problems solved by technology

This centralized architecture of the authentication strategy has the following problems: (1) It is easy to cause a single point of failure, that is, if the central node fails or goes down, the authentication information will not be read

(2) The security of the authentication policy stored in the central node is low, that is, the authentication policy may be tampered with before the user authenticates

[0005] (2) The existing cross-domain aut

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