Biography

Mar. 1991 B.E., Department of Information and Computer Science, Faculty of Engineering Science, Osaka University.
Mar. 1993 M.E., Graduate School of Engineering, Osaka University.
Apr. 1994 – Sep. 1999 Research Associate, Graduate School of Information Science, Nara Institute of Science and Technology.
Feb. 1997 Ph.D. (Engineering) (Osaka University)
Oct. 1999 ElectroTechnical Laboratory, MITI
Apr. 2001 Reorganized to AIST, METI (After that, he served as Director of Research Planning Office, Deputy Director, Research Team Leader, Research Group Leader, etc.）

He is now a deputy director of CPSEC, ISO/IEC JTC 1 SC 27 Expert, Member of CRYPTREC Advisory Board of Cryptographic Technology, etc.

Papers（Selective）

• Nuttapong Attrapadung, Goichiro Hanaoka, Kazuto Ogawa, Go Ohtake, Hajime Watanabe, Shota Yamada: Attribute-Based Encryption for Range Attributes. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. 101-A(9): 1440-1455 (2018)
• Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi, Kaoru Maeda, Tatsuya Hayashi, Yuichi Ioku: HTTP Authentication Extensions for Interactive Clients. RFC 8053: 1-28 (2017)
• Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi, Kaoru Maeda, Tatsuya Hayashi, Yuichi Ioku: Mutual Authentication Protocol for HTTP. RFC 8120: 1-53 (2017)
• Yutaka Oiwa, Hajime Watanabe, Hiromitsu Takagi, Kaoru Maeda, Tatsuya Hayashi, Yuichi Ioku: Mutual Authentication Protocol for HTTP: Cryptographic Algorithms Based on the Key Agreement Mechanism 3 (KAM3). RFC 8121: 1-17 (2017)
• Takao Murakami, Hajime Watanabe: Localization Attacks Using Matrix and Tensor Factorization. IEEE Trans. Inf. Forensics Secur. 11(8): 1647-1660 (2016)

Awards

• Standardization Achievement Award, ITSCJ, IPSJ, Japan, 2023.
• Best Paper Award, IEICE, Japan, 2019.
• Standardization Contribution Award, ITSCJ, IPSJ, Japan, 2014.
• Distinguished Service Award, Engineering Science Society, IEICE, Japan, 2013.
• International Standard Development Award, ITSCJ, IPSJ, Japan, 2010.
• Recognition of Service Award, ACM, 2008, etc.