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Task-Attribute-Based Access Control Scheme for IoT via Blockchain

Hao Chen1, Wunan Wan1, *, Jinyue Xia2, *, Shibin Zhang1, Jinquan Zhang1, Xizi Peng1, Xingjie Fan1

1 Chengdu University of Information Technology, Chengdu, 610225, China.
2 International Business Machines Corporation, New York, USA.

* Corresponding Author: Wunan Wan. Email: .

Computers, Materials & Continua 2020, 65(3), 2441-2453.


As a new form of network, the Internet of things (IoT) is becoming more widely used in people’s lives. In this paper, related theoretical research and practical applications of the IoT are explored. The security of the IoT has become a hot research topic. Access controls are methods that control reasonable allocations of data and resources and ensure the security of the IoT. However, most access control systems do not dynamically assign users’ rights. Additionally, with some access control systems, there is a risk of overstepping other user’s authority, and there may exist a central authority that is a single point of failure. Therefore, to solve these problems, this paper proposes a Task-Attribute-Based Access Control scheme for the IoT via blockchain that combines the access control technologies of both the IoT and blockchain. This model, which merges the advantages of task-based access controls and attribute-based access controls, is perfectly integrated with blockchain technology. This model uses hash functions and digital signature algorithms to ensure the authenticity and integrity of the data, and it can dynamically allocate users’ minimum privileges and thus perfectly solves the single point of failure problem. The model is implemented using a Geth client and solidity code, and the simulation results demonstrate the effectiveness of the model.


Cite This Article

H. Chen, W. Wan, J. Xia, S. Zhang, J. Zhang et al., "Task-attribute-based access control scheme for iot via blockchain," Computers, Materials & Continua, vol. 65, no.3, pp. 2441–2453, 2020.


This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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