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Zhan, Xiong, Guo, Hao, He, Xiaoyun, Liu, Zhoubin, Chen, Hongsong.  2019.  Authentication Algorithm and Techniques Under Edge Computing in Smart Grids. 2019 IEEE International Conference on Energy Internet (ICEI). :191–195.
Two-factor authentication has been widely used due to the vulnerabilities associated with the traditional password-based authentication. One-Time Password (OTP) plays an important role in authentication protocol. However, a variety of security problems have been challenging the security of OTP, and improvements are introduced to solve it. This paper reviews several schemes to implement and modify the OTP, a comparison among the popular OTP algorithms is presented. A smart grid architecture with edge computing is shown. The authentication techniques in the smart grid are analyzed.