Research on the Data Fusion Method for Smart Grid Cloud Storage

For the question that it cannot ensure the privacy of identity and real-time updated key in the process of data fusion in smart grid, this paper proposes a algorithm of data fusion based on dynamic broadcast encryption. The control center broadcasts the key through dynamic broadcast encryption. Users encrypt and sign the data, then upload to the cloud storage. The cloud storage fuses the data and signatures. Then the control center can analyze the data which stored in the cloud storage. The algorithm in this paper supports the privacy protection of users and real-time updated key. Finally the algorithm is proved to be correct and effective by the theory analysis and experiment.