Abstract
The speedy boom of Internet of Things (IoT) devices has revolutionized many fields including smart cities, healthcare, smart homes, etc. Most of these devices exchange sensitive and private data. Due to their exposure to the Internet, the IoT devices can be easily victims of hacking and tampering attacks. Also, attacks that seek to alter their settings, change their behavior and exhaust their resources are very common. Access control solutions help considerably IoT systems to efficiently cope with these attacks and ensure the required security level. In this paper, we survey the most relevant IoT access control solutions starting from the basic centralized ones to the more modern and distributed solutions that rely on emerging technologies such as blockchain and fog computing. Additionally, our work offers a spotlight on the IoT inter-organizational access control solutions. We demystify the challenges, problems and benefits of each surveyed approach. Furthermore, a novel taxonomy of the access control approaches according to their architecture, underlying layers and organizational aspect is proposed. Based on our deep study, we present the future directions of access control in the age of IoT.
Published Version
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