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An access control model for the Internet of Things based on zero-knowledge token and blockchain

Authors
  • Song, Lihua1
  • Ju, Xinran1
  • Zhu, Zongke1
  • Li, Mengchen1
  • 1 North China University of Technology, Beijing, 100043, China , Beijing (China)
Type
Published Article
Journal
EURASIP Journal on Wireless Communications and Networking
Publisher
Springer International Publishing
Publication Date
Apr 26, 2021
Volume
2021
Issue
1
Identifiers
DOI: 10.1186/s13638-021-01986-4
Source
Springer Nature
Keywords
License
Green

Abstract

Information security has become a hot topic in Internet of Things (IoT), and traditional centralized access control models are faced with threats such as single point failure, internal attack, and central leak. In this paper, we propose a model to improve the access control security of the IoT, which is based on zero-knowledge proof and smart contract technology in the blockchain. Firstly, we deploy attribute information of access control in the blockchain, which relieves the pressure and credibility problem brought by the third-party information concentration. Secondly, encrypted access control token is used to gain the access permission of the resources, which makes the user's identity invisible and effectively avoids attribute ownership exposure problem. Besides, the use of smart contracts solves the problem of low computing efficiency of IoT devices and the waste of blockchain computing power resources. Finally, a prototype of IoT access control system based on blockchain and zero-knowledge proof technology is implemented. The test analysis results show that the model achieves effective attribute privacy protection, compared with the Attribute-Based Access Control model of the same security level, the access efficiency increases linearly with the increase of access scale.

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