Open Access

ARTICLE

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

by Hao Chen, Wunan Wan, Jinyue Xia, Shibin Zhang, Jinquan Zhang, Xizi Peng, Xingjie Fan

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. https://doi.org/10.32604/cmc.2020.011824

Received 31 May 2020; Accepted 22 July 2020; Issue published 16 September 2020

Abstract

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.

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Citations