LPDA: A lightweight privacy-preserving data aggregation scheme for smart grid

Security and privacy are challenging issues in smart grid. Failure to address them will hinder the flourish of smart grid. In this paper, aiming at resolving the electricity consumption data security and residential user privacy, we proposed an efficient lightweight privacy-preserving aggregation scheme, called LPDA, for smart grid. The proposed LPDA is characterized by employing one-time masking technique to protect user´s privacy while achieving lightweight data aggregation. Detailed security analysis has shown that the proposed LPDA scheme is robust against many security and privacy threats in smart grid. Furthermore, performance evaluation via extensive simulations demonstrates its efficiency in terms of low average aggregation delay.