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Quantum key distribution will bring more confidentiality and privacy of communication in the future ICT world and will solve the eavesdropping issue. Domains regarded are e-government, e-commerce, e-health, transmission of biometric data, intelligent transport systems and more. So far, quantum researches focus on using properties of the qubit to bring improvements in technologies from our days. The purpose of this paper is to describe the quantum encryption methods. These methods can bring more efficiency of security in existing communications. In this matter, many encryption architectures have been proposed. As an example, the QKD architecture is presented in this paper.

This paper presents how a Smart Grid system is secured and how blockchain implementation provides confidentiality and integrity for such a system. One main issue that has to be addressed in smart grid systems is databases security. Blockchain has been proven to be a safe alternative to be used in mining systems because it allows a secure applicability in databases. Another important feature is that each hash in a crypto mining system cannot be changed if it has such an algorithm behind its build, thus resulting in a secure and reliable system. This paper aims to show how blockchain can affect and be used in a smart power management system going forth from the SealedGRID platform. This system enables the user to monitor in real time the power usage in a smart grid system, therefore, this platform being built with security and resilience against attacks in mind.

With the discovery and novelty regarding crypto mining farms, it has been foreseen that bitcoin mining and other types of cryptocurrency businesses will flourish in the near future. However, one main issue in smart grid systems is the security regarding data bases that must be addressed. Blockchain has been proven to be a safe alternative to be used in mining systems because it allows a secure applicability in databases and also another important aspect is that each hash in a crypto mining system cannot be changed if it has such an algorithm behind its build. Thus, resulting in a secure and reliable system. The purpose of this paper aims to show how blockchain can affect and be used in a smart power management system going forth from the SealedGrid platform. This system enables the user to monitor in real time the power usage in a smart grid system, in so much that this platform is built to be secure and safe from third-party attacks. Hence this paper shows how a crypto mining application can be applied to an energy saving system.

This paper presents how Pycom, Waspmote and Raspberry Pi devices meet low power requirements as part of Internet of Things (IoT). These technologies improve scalability, efficiency and optimize the structure responding to known IoT drawbacks such as low energy, resources and slow information processing. They are part of applications included in Smart City, Smart Home, Smart Grid, mainly telemetry. Libelium technology, including the Waspmote devices, are presented in this paper. Pycom has a variate set of devices: Pysense having five integrated sensors: temperature, humidity, altitude, pressure and light, LoPy, LoPy4 microcontrollers, Pytrack, SiPy, FiPy, GPy, WiPy, expansion boards. Raspberry Pi is known for being a single board-computer which is running its own operating system (OS). It consumes more power, unless running processes are prioritized for lowering the consumption, which requires a vast Linux knowledge. In this article we present an experiment using Pycom and Pysense which will show its capability for collecting data from the environment. Also, this paper describes how the montage works with Adafruit cloud. Pycom devices functioning in low-power wide-area networks use long range (LoRa) antennas which are especially designed for such networks. This type of antenna helps Pycom montages to save energy and for this to take effect, it must be placed in a LPWAN network. LoRa runs well in exposed environments, but connection can be affected by buildings. Having 14dBm output power, LoRa covers 25 km flat areas.