A Brief Overview of Blockchain Technology and Access Control in IoT

Internet's lightning-fast growth and the smartphone industry has led to the emergence of the Internet of Things (IoT), which aims to connect all objects/devices to the Internet so that automated objects can interact with their environment and communicate data eliminating the need for human interaction. IoT has the potential to transform industries and enable new forms of innovation and efficiency, but it also poses challenges in terms of privacy, security, and data management. As the number of connected devices continues to grow, it will be essential to develop standards and best practices to assure IoT system reliability and safety. To accomplish these obstacles of efficient data sharing and authorized access control, otherwise decentralized automation, security, and stakeholder trust management in the IoT, a new technology called Blockchain has emerged. In this context, this paper introduces Blockchain technology, which is characterized by decentralization, transparency, and immutability. It can be used to solve some of the challenges facing IoT systems, such as data security and confidentiality. In addition, this paper presents a study on the contribution of blockchain technology (BC) and access control (AC) methods in IoT systems.