Noboru Kunihiro / Associate Professor / Transdisciplinary Sciences Division
Department of Complexity Science and Engineering / / Cryptography, information security and quantum computation

Career Summary
1994: Graduated, Faculty of Engineering, The University of Tokyo
1996: Master of Engineering, The University of Tokyo
1996:-2002 Researcher, Nippon Telegraph and Telephone
2001: Ph. D., The University of Tokyo
2002:-2006 Assistant Professor, The University of Electro-Communications
2006-2008: Associate Professor, The University of Electro-Communications
2008: Associate Professor, The University of Tokyo
Educational Activities
Graduate school: Theory of Information and Coding
Research Activities
Cryptanalysis on public key cryptosystems and related schemes
1) Noboru Kunihiro and Kaoru Kurosawa: Deterministic Polynomial Time Equivalence between Factoring and Key-Recovery Attack on Takagi's RSA, in Proc. of PKC2007, LNCS4450, pp. 412-425, 2007.
2) Noboru Kunihiro, New Definition of Density on Knapsack Cryptosystems, in Proc. of AfricaCrypt2008, LNCS5023, pp. 156-173, 2008.

Other Activities
Institute of Electronics, Information and Communication Engineers of Japan (IEICE)
International Association for Cryptologic Research (IACR)
Society of Information Theory and its Applications (SITA)
Future Plan

Our main target is to analyze the security of public key cryptosystems from a theoretical perspective. Furthermore, we will also analyze the security of existing systems.
Messages to Students
I hope that you will try to voraciously acquire a broad range of knowledge.
You need not self-restrict your potential.