Tsuyoshi Takagi Kyushu University Institute of Mathematics for Industry 744, Motooka, Nishi-ku, Fukuoka 819-0395, Japan Tel: +81-92-802-4456, Fax: +81-92-802-4405 Email: takagi at imi.kyushu-u.ac.jp If your e-mail to the address above is rejected, then please re-send to hoher_baum at yahoo.co.jp. A limited number of positions for PhD and PostDoc are available. Please contact me if you are interested in it.

Resume

1993 B.Sc., School of Mathematics, Nagoya University, Japan
1995 M.Sc., Graduate School of Mathematics, Nagoya University, Japan
1995 Researcher, NTT Laboratories, Tokyo
1998 Guest researcher, Department of Computer Science, Technische Universit?t Darmstadt, Germany
1999 Researcher, NTT Laboratories, Germany
2001 PhD with honors, Department of Computer Science, Technische Universit?t Darmstadt, Germany
2002 Assistant Professor, Department of Computer Science, Technische Universit?t Darmstadt, Germany
2005 Associate Professor, School of Systems Information Science, Future University Hakodate, Japan
2008 Professor, School of Systems Information Science, Future University Hakodate, Japan
2010 Professor, Faculty of Mathematics, Kyushu University, Japan
2011 Professor, Institute of Mathematics for Industry, Kyushu University, Japan

2006 Guest Researcher, Center for Tsukuba Advanced Research Alliance, University of Tsukuba, Japan
2007 Adjunct Lecturer, Graduate School of Engineering, Nagoya University, Japan
2007 Adjunct Lecturer, Graduate School of Information Science and Technology, Hokkaido University, Japan
2009 Adjunct Professor, School of Computer Science and Engineering, University of Electronic Science and Technology of China
2009 Adjunct Professor, Faculty of Mathematics, Kyushu University, Japan
2010 Adjunct Professor, School of Systems Information Science, Future University Hakodate, Japan

Awards

1997 IEICE Young Engineer Award
1998 NTT Laboratories President Award
2009 FUNAI Computer Science Prize (2 million yen)

Program Committee

CQRE1999, ICISC2002, CT-RSA2003, CHES2003, CNIS2003, CT-RSA2004, CHES2004, CT-RSA 2005, ACNS2005, CCN2005, CHES2005, ACM-DIM2005, ICISC2005, ACIS2006, ACNS2006, SECRYPT2006, ETRICS2006, SecUbiq2006, VietCrpt2006, IWSEC2006, ICISC2006, ARES2007, ISPEC2007, CHES2007, Pairing2007(PC Co-Chairs), SECRYPT2007, ProvSec2007, IWSEC2007, ACM-DIM2007, ICISC2007, ARES2008, Asiacrypt2007, INDOCRYPT2007, PKC2008, ANTS2008, ACISP2008, Pairing2008, SECRYPT2008, WISA2008, ACM-DIM2008, ICICS2008, CANS2008, ICISC2008, ARES2009, ISPEC2009, Pairing2009, SECRYPT2009, IWSEC2009(PC Co-Chairs), ProvSec2009, WISA2009, ACM-DIM2009, CANS2009, ICICS2009, ICISC2009, ACNS2010, SecureComm2010, FDTC2010, CHES2010, IWSEC2010, WISA2010, ACM-DIM2010, INSCRYPT2010, ASIACCS2011, WISTP2011, ISPEC2011, CHES2011(PC Co-Chairs), ISC2011, ProvSec2011, WISA2011, ICISC2011, Pairing2012, ACNS2012, CRYPTO2012, ACISP2012, ProvSec2012(PC Co-Chairs), ARES2012, IWSEC2012, ISC2012,...

Academic Activities in Japan

2005-2009 Committee Member, Information Security Research Group, IEICE
2005-2009 Committee Member, Computer Security Research Group, IPSJ
2006-2009 Associate Editor, IEICE Transactions, Fundamentals
2007-2010 Associate Editor, IPSJ Journal, Information Processing Society of Japan
2008-2009 Reviewer, Grants-in-Aid for Scientific Research
2008 Chief, ID-Based Encryption WG, CRYPTREC
2009 Chief, List Guide WG, CRYPTREC
2010-2011 Member, Cryptographic Scheme Committee, CRYPTREC

Joint Researches

NTT Laboratories, Fujitsu Laboratories, Sony, Hitachi Systems Development Laboratory, KDDI Laboratories, Mitsubishi Research Institute (MRI), National Institute of Information and Communications Technology (NICT), Electronics and Telecommunications Research Institute (ETRI), Institute for Infocomm Research (I2R).

Patents

H8-236862, H8-189730, H9-156903, H11-76245, 2004-001602, 2004-132486, 2004-071757, 2008-20653, 2008-0160657, 2008-053537, 2008-208523, 2009-007315, ...

PostDocs

[1]Dong-Guk Han, Korean Research Foundation, 2005-2006
[2]Eun-Kyung Ryu, Korean Research Foundation, 2006-2007
[3]Masaaki Shirase, NEDO, 2006-2008.
[4]Fagen Li, JSPS Postdoctoral Fellowships, 2008-2009.
[5]Mingwu Zhang, JSPS Postdoctoral Fellowships, 2010-2012.
[6]Youwen Zhu, JSPS Postdoctoral Fellowships, 2012-2014.

Book Contributions

[1]Tsuyoshi Takagi, "Advanced Course on Contemporary Cryptology (Chapter 6)", Centre de Recerca Matematica, pp.223-277, Birkh?user Verlag, 2005.
[2]Tsuyoshi Takagi, Tatsuaki Okamoto, Eiji Okamoto, Takeshi Okamoto (Eds.), "Pairing-Based Cryptography - Pairing 2007", LNCS 4575, Springer-Verlag, 2007.
[3]Kyosuke Osaka, Tsuyoshi Takagi, et al., "RFID Security: Techniques, Protocols and System-on-Chip Design (Chapter 7)", pp.147-176, Springer-Verlag, 2008.
[4]Tsuyoshi Takagi, Masahiro Mambo (Eds.), "Advances in Information and Computer Security - IWSEC 2009", LNCS 5824, Springer-Verlag, 2009.
[5]Bart Preneel, Tsuyoshi Takagi (Eds), "Cryptographic Hardware and Embedded Systems - CHES 2011", LNCS6917, Springer-Verlag, 2011.

Journal Papers (Details)

[1]Tsuyoshi Takagi, "Product Formula of the Cubic Gauss Sum Modulo the Product of the Primes", Journal of Number Theory, Vol.62, No.2, pp.298-306, Elsevier, 1997.
[2]Sachar Paulus and Tsuyoshi Takagi, "A New Public-key Cryptosystem over the Quadratic Order with Quadratic Decryption Time", Journal of Cryptology, 13, pp.263-272, Springer-Verlag, 2000.
[3]Marc Joye, Jean-Jacques Quisquater, Tsuyoshi Takagi, "How to Choose Secret Parameters for RSA and its Extensions to Elliptic Curves", Designs, Codes and Cryptography, 23 (3): pp.297-316, Kluwer Academic Publishers, 2001.
[4]Tsuyoshi Takagi, "A Fast RSA-Type Public-Key Primitive Modulo pkq", IEICE Transactions, Vol.E87-A, No.1, pp.94-100, 2004.
[5]Katja Schmidt-Samoa, Olivier Semay, Tsuyoshi Takagi, "Analysis of Fractional Window Recoding Methods and Their Application to Elliptic Curve Cryptosystems", IEEE Transactions on Computers, Vol.55, No.1, pp.48-57, 2006.
[6]Camille Vuillaume, Katsuyuki Okeya, Tsuyoshi Takagi, "Short Memory Scalar Multiplication", IEEE Transactions on Computers, Vol.57, No.4, pp.481-489, 2008.
[7]Jean-Luc Beuchat, Nicolas Brisebarre, Jeremie Detrey, Eiji Okamoto, Masaaki Shirase, and Tsuyoshi Takagi "Algorithms and Arithmetic Operators for Computing the EtaT Pairing in Characteristic Three", IEEE Transactions on Computers, Vol.57, No.11, pp.1454-1468, 2008.
[8]Kaoru Kurosawa, Tsuyoshi Takagi, "One-Wayness Equivalent to General Factoring", IEEE Transactions on Information Theory, Vol.55, No.9, pp.4249-4262, 2009.
[9]Keisuke Hakuta, Hisayoshi Sato, and Tsuyoshi Takagi, "Efficient Arithmetic on Subfield Elliptic Curves over Small Finite Fields of Odd Characteristic", Journal of Mathematical Cryptology, Vol.4, No.3, 199?238, 2010.
[10]Takuya Hayashi, Naoyuki Shinohara, Lihua Wang, Shin'ichiro Matsuo, Masaaki Shirase, Tsuyoshi Takagi, "Solving a 676-Bit Discrete Logarithm Problem in GF(3^{6n})", IEICE Transactions, Vol.95-A, No.1, pp.204-212, 2012.

Press Articles

Guter Drat nach Fernost, Frankfurter Rundschau, 14. May 1999.
Experte f?r Schl?sseltechnologie, Frankfurter Allgemeine Zeitung, 17. September 2002.
The First Joint Research with Korea at FUN, Hokkaido Newspaper, 5. July 2005. (In Japanese)
A new IC chip, Hokkaido, Newspaper, 16. April 2008. (In Japanese)
Promoting the Joint Research with I2R, Hakodate Newspaper, 2. March 2009. (In Japanese)