Yong-Yuan Deng has been a postdoctoral researcher at the Institute of Information Engineering and Computer Science, the Chaoyang University of Technology, since 2017. He was born in Taiwan in 1983. He received his PhD at the Institute of Information Management, Chaoyang University of Technology, Taichung, Taiwan, in 2016. His research interests include cryptography, sensor networks, mobile commerce, and radio frequency identification systems.