Efficient Blockchain-Based Data Aggregation Scheme With Privacy-Preserving on the Smart Grid

With the development of smart grid, the introduction of blockchain technology provides a novel idea for secure power data sharing. The existing blockchain-based data aggregation schemes generally rely on a unique leader node to perform verification algorithms, but there may be a lazy leader node not performing aggregation data verification to save computation costs. In addition, in the existing verification mechanism, light nodes need to perform the same verification operations as the leader node, which results in resource-constrained light nodes being unable to bear. In this paper, we propose an efficient blockchain-based data aggregation scheme with privacy-preserving on the smart grid, called EC-ASPG, which implements a supervised mechanism for the lazy leader node, enhancing the security of the system. Furthermore, we propose a separable consensus verification mechanism, which can prevent other light nodes from performing duplicate verification operations like the leader node, effectively improving the efficiency of consensus verification. Finally, we present a formal security proof and comprehensive performance evaluations. The results show that our scheme is secure and outperforms the compared schemes in terms of performance analysis.