About the Authors

Changji Wang

isswchj@mail.sysu.edu.cn

Affiliations School of Information Science and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Province Information Security Key Laboratory, Sun Yat-sen University, Guangzhou, China

Yuan Li

Affiliations School of Information Science and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Province Information Security Key Laboratory, Sun Yat-sen University, Guangzhou, China

Xiaonan Xia

Affiliations School of Information Science and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Province Information Security Key Laboratory, Sun Yat-sen University, Guangzhou, China

Kangjia Zheng

Affiliations School of Information Science and Technology, Sun Yat-sen University, Guangzhou, China, Guangdong Province Information Security Key Laboratory, Sun Yat-sen University, Guangzhou, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CW YL. Performed the experiments: CW YL XX KZ. Analyzed the data: CW YL. Contributed reagents/materials/analysis tools: CW YL XX KZ. Wrote the paper: CW YL. Constructed the scheme: CW YL XX KZ. Proved the security of scheme: CW YL.