A Survey on Security in Data Transmission in IoT: Layered Architecture

The Internet of Things (IoT) is the communications technology where, physical objects, which are basically not designed for connection, will be able to connect, create, receive and exchange collected data permanently and transparently. Many IoT applications focus on the automation of various tasks and try to encourage the interaction of inanimate physical objects to function without any human action. The various IoT applications hold great promise for enhancing the level of comfort, efficiency and authorisation for end users. This is the dream world towards which humans are working relentlessly. But succeeding in building such a world in its practical and growing implementation requires security, confidentiality and authentication always present and high. In this respect, rigorous work is needed on the structure of the various layers that make up the overall IoT architecture, in order to avoid existing risks and problems. In this survey, an in-depth look at the security of data transmission by layer and their solutions is presented. After discussing the security issues, advantages and disadvantages of the proposed solutions are also discussed. Finally, the limitations of IoT devices are presented.