Blockchain Based Secure Data Management for IoT Devices

Two of the most ground breaking technologies, blockchain and the Internet of Things (IoT), are already beginning to drastically alter The network configuration as it appears now and reshape details digital world during the future. IoT integration has given the things around us life and made them "smart" and able to communicate with one another. This has allowed them to continuously record the physical world and gather massive amounts of data, which can then have analyzed and used to inform intelligent actions. It has changed the fundamental way we perceive the physical world and enabled our ideal of a smooth transition between the digital and physical realms. Still, the problem with existing Connectivity of The circumstances solutions is that they require a centralized entity, such as a cloud server, for interacting with one another over the Internet, whose conveys an important concern to the private nature and safety of the large amount of private facts being produced, Despite the original architectural plan called for for an autonomous one, such as a distributed or peer-to-peer (P2P) system, blockchain enters the picture, offering a reliable and secure method of information sharing through a distributed/P2P model, to achieve transparency, security, privacy, auditability, resilience, access authentication, data immutability, etc. In this paper, we will examine how to combine both technologies to get around their drawbacks and maximize their advantages. We have provided a thorough overview of the fundamentals of both technologies, as well as the blockchain-based Internet of Things (BIoT) architecture, protocols, and operation, as well as a few instances of BIoT applications that can be while the original architecture design requires constructed on top of it, for connecting and interacting via the Internet, which presents a serious risk to the security and privacy of the huge quantity of sensitive data being generated, and comparing.