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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]

According to statistics from the Labour and Employment Ministry of India, for the years 2014-2016, forty-seven workers were injured and three died in accidents every day. A total of 3,562 workers have lost their lives while 51,124 were injured in accidents that occurred in factories across the country during that period. Industrial safety is pivotal for any manufacturing industry to prevent or lessen workplace injury. Fire extinguishers and fire exits are the two most important safety measures in case of a fire in the factory. But in most situations, accessibility to fire extinguishers and fire exits is blocked by cardboards, broken chairs, and other industrial waste that employees put there unknowingly. The main reason for this behavior is that fire extinguishers and fire exits are placed in open areas with large spaces so that accessibility to them would be easier. This has enabled employees to utilize the large open space to dump waste. To avoid these problems, we have developed an IoT-based smart sensor network to monitor fire extinguishers and fire exits for any obstacle that is blocking them. If there are any violations, the safety team will be notified of the location by the system. [ABSTRACT FROM AUTHOR]