A privacy preserving scheme for change increment of electricity big data base on symmetric cryptography

Because of the large volume and quick-change of real-time electricity data, users´ data generally is stored in various cloud platforms, which are easily attacked by adversaries, and users´ privacy is revealed by this disclosure of data indirectly. Therefore, in order to prevent the disclosure of privacy, it is necessary for cloud platforms to have an efficient, secure method to protect the real-time data. In this work, we present a privacy preserving scheme based on symmetric cryptography for change increment of electricity big data, which is proved to be of high-security and with high running efficiency through theoretical analysis and simulation experiment.