A privacy protection scheme based on certificateless aggregate signcryption and masking random number in smart grid

摘要

Security of data transmission and privacy protection are key issues in smart grid. Aiming at the improvement of the above issues, a privacy protection scheme is proposed based on certificateless aggregate signcryption and masking random number. In the proposed scheme, the building gateways generate masking random matrix satisfying requirements, according to time sharing billing strategy sent by control center, and then send the matrix to users. The data of users send to building gateway after adding masking random number and signcryption and the building gateway send data to the control center after aggregate signcryption. Then, the control center saves data after verifying and unsigncrypt. Theoretical study and security analysis indicates that the proposed method reduces the communication cost and simplifies the procedure of encryption and decryption.