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Our lives have significantly transformed as a result of the Internet of Things (IoT). We employ IoT because of our customers, government agencies, and business partners. Security is a major problem when offering a variety of services even if IoT offers new options. Particularly hard is how the statistics are presented. How to secure the flow of information produced by IoT devices while passing through various nodes and gateways may be safeguarded from security threats. In this paper, we propose an effective key management approach that mixes symmetric and asymmetric cryptosystems in order to get the speed of the former and the security benefits of the latter. Our aim is to guarantee the IoT environment's security. Our method takes into account a number of Smart Objects (SO) that can produce, register, and distribute keys for IoT information transfer. We selected the open-source MessageQueuingTelemetryTransport (MQTT) protocol as a solution to help communication between the starting point and target nodes. The proposed approach is tested experimentally, and the results are discussed in terms of key exchange time, algorithm implementation time, number of reprocess connections, and bandwidth consumption. [ABSTRACT FROM AUTHOR]

with the hasty growth and extensive use of wireless sensor networks (WSNs), it is imperative to enhance the security for WSNs. The concept of the Internet of Things (IoT) is determined by growths of the Internet with the interconnectedness of diversified smart objects using dissimilar networking and communication technologies. Among countless basic networking technologies for the IoT, Wireless Sensor Network (WSN) technology has become an essential building block. IoT empowered sensor networks to afford a wide variety of application areas such as smart homes, smart healthcare, smart cities and various solutions for the manufacturing industry. The incorporation of WSNs in IoT will also generate newfangled security challenges for launching secure channels sandwiched between low power sensor nodes and Internet hosts. The key management is an effective way to protect WSNs from various malicious attacks. This will lead to numerous challenges in designing new key establishment and authentication protocols. This paper discusses about several KMS Taxonomies and surveys and recent KMS which are applicable for WSN. [ABSTRACT FROM AUTHOR]

The Internet of Things (IoT) aims to connect massive sensing devices through wireless networks to realize information interaction between the physical world and the virtual world. Wireless sensor networks, which have emerged as a result of advancements in wireless communication, micro electro-mechanical systems technology, and electronics, offer a wide range of future applications. In many circumstances, appropriate key management is required for networking security. The mechanism used to tackle the challenge of creating, establishing, distributing, and maintaining secret session keys is known as key management. Authentication and key exchange in IoT faces major challenges owing in part to the fact that constituent devices are resource constrained, deployed in environments where physical access to devices is possible. We describe ideas and strategies for designing authenticated key management systems for wireless sensor networks in an IoT environment. In this paper, we address several aspects related to pairwise key management, group key and establishment including issues related to authentication in existing literature. We also discussed literature on the design and implementation of lightweight group key management protocols that can be deployed in various IoT group applications along with research directions. [ABSTRACT FROM AUTHOR]