Cao, Guanghui http://orcid.org/0000-0001-9726-1271
Wang, Xingyuan
Funding for this research was provided by:
National Natural Science Foundation of China (CN) (61672124, 61370145)
the Password Theory Project of the 13th Five-Year Plan National Cryptography Development Fund (MMJJ20170203)
National Natural Science Foundation of China (61502216 , 51679116)
Natural Science Foundation of Liaoning Province (201602365, 201602372, 20170540434 and 20170540448)
Article History
Received: 2 October 2017
Revised: 8 July 2018
Accepted: 31 August 2018
First Online: 8 September 2018