With the rapid development of wireless sensor networks, smart devices, and traditional information and communication technologies, there is tremendous growth in the use of Internet of Things (IoT) applications and services in our everyday life. IoT systems deal with high volumes of data. This data can be particularly sensitive, as it may include health, financial, location, and other highly personal information. Fine-grained security management in IoT demands effective access control. Several proposals discuss access control for the IoT, however, a limited focus is given to the emerging blockchain-based solutions for IoT access control. In this paper, we review the recent trends and critical needs for blockchain-based solutions for IoT access control. We identify several important aspects of blockchain, including decentralised control, secure storage and sharing information in a trustless manner, for IoT access control including their benefits and limitations. Finally, we note some future research directions on how to converge blockchain in IoT access control efficiently and effectively.
翻译：随着无线传感器网络、智能装置和传统信息和通信技术的迅速发展,在我们日常生活中,利用因特网“东西”应用程序和服务的情况有了巨大增长。互联网系统涉及大量数据。这些数据可能特别敏感,因为它可能包括健康、财务、地点和其他高度个人信息。互联网的精细安全管理要求有效的出入控制。但是,关于互联网接入控制的若干提议对互联网接入控制的新形成的基于链锁的互联网接入控制解决方案给予了有限的关注。在本文件中,我们审查了互联网接入控制基于链条解决方案的最新趋势和关键需求。我们确定了块链的一些重要方面,包括分散控制、安全存储和以不信任的方式共享信息,以便实施互联网接入控制,包括它们的惠益和局限性。最后,我们注意到关于如何高效率和有效地将互联网接入控制中的链条连接起来的一些未来研究方向。
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