A Smart Grid Privacy Protection Scheme Based on Short FailStop Signature In promoting the development of intelligent and distributed power transmission systems, smart grid has attracted extensive attention. However, the data transmitted over smart grids are not protected, and then suffer from several types of security threats and attacks. How to provide an efficient security protocol to enhance the privacy protection of smart grid network and prevent information leakage has become a hot research topic of smart grid privacy protection. In this paper, a short failstop signature scheme based on factorization and discrete logarithm assumption is designed to protect the information privacy of smart grid. The proposed scheme can not only protect the privacy of smart devices in the smart grid, but also prevent the forgery of payment credentials, and ensure the trusted center to effectively manage and maintain smart grid users and payment credentials.

Smart Grid Security: Survey and Challenges Smart grids connect millions of devices and enable efficient power distribution. The biggest advantage of smart grid networks is their use in the distribution of renewable energy. In addition to the significant benefits that smart grids bring, it is necessary to address the issue of cyber security, which is all the more important as energy networks are a part of critical infrastructures. This paper discusses communication protocols used in smart grid networks. It focuses on the most widely used protocol: DLMS  COSEM. The paper deals with the security mechanisms, authentication methods, encryption, and logic and volumetric attack resistance. Furthermore, this paper deals with the security levels of smart meters and concentrators. It also presents currently available DLMS clients and explains the necessity of developing own DLMS client. The aim of this paper is to identify the problems of smart grid networks and to outline future solutions in this area.