NamSu Jho received a B.S. degree in mathematics from the Korea Advanced Institute of Science and Technology, Daejeon, South Korea, in 1999, and a Ph.D. degree in mathematics from Seoul National University, South Korea, in 2007. Since 2007, he has been with the Electronics and Telecommunications Research Institute (ETRI), Daejeon, as a Principal Researcher. His research interests include cryptography and information theory.