Abstract
A microgrid is a flexible and localized grid that can disconnect from the main grid and operate independently on the traditional and/or renewable resource. It also can work with the main grid, and even provide power to the main grid when it has excess power to help relieve the pressure of energy. The flow of power between main grid and microgrid is monitored by smart meter, which kept the end user’s privacy information and his/her energy usage in real time. Hence, ensuring the privacy and security of these information is a considerable challenge. In this paper, we investigate the relationship between microgrids and the main grid, and design a quantum-resistant lightweight authentication and key agreement (AKA) protocol based on fog computing. The proposed protocol provides the mutual authentication and generates a session key between a smart meter and a fog node. More importantly, it can resist against quantum computing attacks, as the security of our scheme relies on the hardness of the learning parity with noise (LPN) problem, an NP-complete problem. Finally, we evaluate the performance of our proposed protocol and prove that our protocol is more lightweight and efficient.
Highlights
As a key building block for a smart grid, a microgrid is a ‘‘minified’’ version of power supply network [1] that is designed to provide stable power for a small community which may hard to connected to the main grid directly, such as sea islands or remote locations, and reduce the peak load and losses for some urban communities
Through single Point of Common Coupling (PCC), microgrid can achieve the mode conversion. It operates in gridconnected mode; it can be separated from main grid and changed to the islanded mode that completely independently using local energy generation sources in times of crisis, such as storms, power outages, aging infrastructure, or for other reasons
OUR RESEARCH CONTRIBUTION In this paper, we design a quantum-resistant lightweight authentication and key agreement (AKA) protocol based on fog computing in microgrids
Summary
As a key building block for a smart grid, a microgrid is a ‘‘minified’’ version of power supply network [1] that is designed to provide stable power for a small community which may hard to connected to the main grid directly, such as sea islands or remote locations, and reduce the peak load and losses for some urban communities. Smart meter can provide the real-time feedback on energy consumption which can help consumer to better manage their use, save energy and low their bills If these sensitive information are forwarded to the main grid directly, the need for communication bandwidth will increase. In addition to powerful devices, such a system typically contains some resource-constrained devices that lack adequate capacity to complete complex computation tasks and store the necessary data To satisfy these requirements, we need to design a lightweight protocol to provide security services for communication between microgrids and a main grid, such as privacy preservation, confidentiality, and integrity, while ensuring suitability for different kinds of devices.
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