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KAZUTO OGAWA

KAZUTO OGAWA

Distinguished Researcher
Security Fundamentals Laboratory
Cybersecurity Research Institute

Kazuto Ogawa received his B.E. from the University of Tokyo in 1987. He joined Japan Broadcasting Corporation (NHK) in 1987 and had engaged as a video cameraman from 1987 to 1991. He had been a researcher at NHK since 1991 and had been on loan to the National Institute of Information and Communications Technology (NICT) from 2020 to July 2023. He received a Ph.D. in Information and Communication Engineering from the University of Tokyo in 2008. He is currently a distinguished researcher at NICT.

His research interests include the improvement of content distribution and broadcasting services and cryptography for services.

He received Best Paper Awards in 2008, 2019, and 2021 from IEICE and Contribution Award from Engineering Sciences Society of IEICE. He also received Contribution Awards in 2016 and 2017 from International Workshop on Security, DoCoMo Mobile Science Award in 2011, and Telecom System Technology Award in 2016. He is an IEICE fellow.

Research interests
Security technologies for content-distribution and broadcasting services
Keyword
Security technologies for broadcasting and content-distribution services, Broadcasting encryption

Selected papers

  • K. Ogawa, G. Hanaoka, H. Imai, "Traitor Tracing Scheme Secure against Adaptive Key Exposure and its Application to Anywhere TV Service," IEICE Trans. on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E90-A, No.5 2007, pp.1000-1011, 2007.
  • G. Ohtake, K. Ogawa, R. Safavi-Naini, "Privacy Preserving System for Integrated Broadcast-broadband Services using Attribute-Based Encryption," IEEE Trans. on Consumer Electronics, Vol.61, No.3 2015, pp.328-335, 2015.
  • N. Attrapadung, G. Hanaoka, K. Ogawa, G. Ohtake, H. Watanabe, S. Yamada, "Attribute-Based Encryption for Range Attributes,'' IEICE Trans. on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E101-A, No.9 2018, pp.1440-1455, 2018.
  • K. Kaisei, K. Ogawa, E. Fujisaki, "A Constant-Size Signature Scheme with a Tighter Reduction from the CDH Assumption,'' IEICE Trans. on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E103-A, No.1 2020, pp.141-149, 2020.
  • K. Ogawa, T. Inoue, "Practical Update of Scrambling Scheme and its Security Analysis,'' ITE Trans. on Media Technology and Applications (MTA), Vol.6, No.1, pp.110-123, 2018.
  • K. Nuida, S. Fujitsu, M. Hagiwara, T. Kitagawa, H. Watanabe, K. Ogawa, H. Imai, "An Improvement of Discrete Tardos Fingerprinting Codes," Designs, Codes and Cryptography, Vol.52, No.3, pp.339-362, 2009.
  • K. Ogawa, T. Inoue, "A Scrambling Scheme Updating Method in Broadcasting Services," ITE, Vol.69, No.12, pp.J344-J354, 2015.
  • T. Yamada, H. Yoshiura, I. Echizen, K. Ogawa, I. Murota, G. Ohtake, S. Gohshi, "Watermarking Applications for Broadcast Content Copyright Protection," ITE, Vol.57, No.9, pp.1155-1167, 2003.
  • A. Fujii, G. Ohtake, G. Hanaoka, N. Attrapadung, H. Watanabe, K. Ogawa, H. Imai, "Secure Broadcast System with Simultaneous Individual Messaging," IEICE Trans. on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E94-A, No.6 2011, pp.1328-1337, 2011.
  • K. Kaisei, G. Ohtake, K. Ogawa, "Privacy-Preserving System for Enriched-Integrated Service," IEICE Trans. on Information and Systems, Vol.E104-D, No.5, pp.647-658, 2021.

Awards

  • FY2007 IEICE Best Paper Award
  • 2011 DoCoMo Moblie Science Award
  • 2016 Telecom System Technology Award
  • 2016 International Workshop on Security Contribution Award
  • 2017 International Workshop on Security Contribution Award
  • FY2017 IEICE Engineering Sciences Society Contribution Award
  • FY2018 IEICE Best Paper Award
  • FY2020 IEICE Best Paper Award
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