An Authorizable Threshold Signature Scheme for Secure Sharing and Mining of Power IoT Data

The rapid development and wide popularity of electric power IoT has brought convenience to people's daily lives. Comprehensive informatization and intelligent transformation of the electric power system are carried out to support the interconnection and interoperability among devices, as well as to facilitate the effective collection, transmission, processing, and analysis of data. Through electric power IoT, real-time monitoring and analysis of power equipment status, operation and load situation can be realized to improve the reliability, safety and economy of the power system. The Internet of Things (IoT) technology has enabled seamless integration between the physical and digital worlds by connecting and interconnecting devices. It provides people with smarter and more convenient ways of living. On the other hand, social computing technology focuses on utilizing social network and social media data for computation and analysis, revealing relationships and behavioral patterns among individuals. Data mining technology, in turn, aims to discover patterns and trends from large-scale data. The fusion of these three technologies promises exciting innovations and transformative changes that will have a profound impact on our society. However, Cyberspace encompasses pervasive security vulnerabilities across the entirety. The transmission process of power data entails the potential for corruption or unauthorized tampering to occur, thus compromising the integrity. To solve this problem, we propose an authorizable threshold signature scheme for the power IoT. In our scheme, the perception nodes in the power IoT authorize the storage nodes with signatures in time periods. Only those storage nodes possessing proper authorization are capable of generating valid signatures. As such, our scheme effectively fulfills the requirements of non-forgeability, non-repudiation, and forward security.