Key Laboratory of Aerospace Information Security and Trusted Computing of Ministry of Education;
School of Cyber Science and Engineering;
Wuhan University;
Wuhan 430072;
China;
School of Computer Sciences;
Hubei University of Technology;
Wuhan 430068;
China;
Department of Information Systems and Cyber Security and Department of Electrical and Computer Engineering;
University of Texas at San Antonio;
San Antonio;
TX 78249;
USA;
SM2; signature; two-party signing; wireless environment; provable security; threshold secret sharing;