Secure communication architecture is an important basis for ensuring security and stability of the smart grid

while the data aggregation with privacy-preserving is an effective way to protect confidentiality and improve efficiency. A data aggregation and access control framework for a smart grid communication system is proposed. In the aggregation phase

privacy homomorphism is used to aggregate the multidimensional data. In particular

the signatures batch verification is provided

so that the number of pairing computations is independent of the number of aggregated signatures

which is maintained at constant 3. In the feedback phase

the attribute-based encryption(ABE)method is used to achieve one-to-many communication and user distinguished access control. Only users who meet the attributes set requirements can obtain the operation command. Security analysis shows that the proposed scheme has functions such as privacy-preserving

resources authentication and data integrity verification. A detailed comparison with the existing schemes shows that the proposed scheme has significant advantages of convenient computation and user access control. This work is supported by National Natural Science Foundation of China(No. 71263045).