Internet-of-Things-oriented access control system and method based on smart contract

Abstract

The invention provides an Internet-of-Things-oriented intelligent contract-based access control system and method. The system comprises a management module and a plurality of intelligent contracts deployed on a block chain, wherein each intelligent contract comprises: a proxy contract for managing registration information and obtaining access permission from an access control contract; an access control contract which is used for managing an access policy, obtaining an authority threshold of the authority management contract, and feeding back an access authority result to the agent contract; an authority management contract which is used for identifying an access exception event and calling a machine learning algorithm to obtain an access authority threshold value of the target sensing equipment; and a management module which is used for constructing an information link between the sensor and the block chain, allocating an address to the sensor and configuring an initial access policyof an access object for the access control contract. According to the invention, malicious nodes or abnormal access requests can be effectively identified through an access object credit evaluation mode based on the RBF neural network, and dynamic authority management is realized.

Description

technical field [0001] The present disclosure relates to the technical field of the Internet of Things, and in particular to an access control system and method based on smart contracts for the Internet of Things. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] With the rapid development of the Internet of Things technology, the number of sensors connected to the Internet of Things has increased exponentially. However, a large number of Internet of Things devices have bottlenecks such as limited resources, massive connections, and poor security performance, which have brought great security risks to the Internet of Things. In recent years, In the past, security attacks on the Internet of Things occurred frequently, which seriously threatened the security and privacy of users and the security of the basic network environment. For example...

AI Technical Summary

Problems solved by technology

[0004] The inventors of the present disclosure found that the wireless sensor network is a multi-hop, self-organized network that organizes and combines massive sensor nodes in a free manner through wireless communication technology, and can coordinate real-time sensing, collection and processing of perception of network coverage. Object information is transmitted wirelessly after information processing, and sent to users in a multi-hop self-organizing manner; usually, sensors in wireless sensor networks have the characteristics of limited computing and storage capacity, low cost, and low security, so sensor nodes are easily affected by the outside world. Intrusion, leading to information leakage or sensor network damage, traditional access control methods can no longer fully meet the security access requirements of a large number of IoT sensors

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