日本語
NIHON UNIVERSITY's 
College of Industrial Technology 
Department of Mathematical Information Engineering 

Updated : 2020/04/04 
顔写真 Professor 
TOCHIKUBO Kouya 

My website is here.  

Career (Number of the published data : 4)
Toshiba Corporation  1998/04/01-2004/09 
Toshiba Solutions Corporation  2004/10/01-2006/03 
Department of Mathematical Information Engineering, College of Industrial Technology, Nihon University  2006/04/01-Present 
University of Waterloo  Visiting Professor  2012/03-2013/02 

Academic background (Number of the published data : 3)
Science University of Tokyo  Faculty of Science  Department of Applied Mathematics  1996  Graduated  Domestic 
Japan Advanced Institute of Science and Technology  Graduate School of Information Science  Department of Information Systems  Doctor prophase  1998  Completed  Domestic 
Tokyo Institute of Technology  Graduate School of Science and Engineering  Department of Communications and Integrated Systems  Doctor later  2004  Completed  Domestic 

Academic degrees (Number of the published data : 1)
Doctor of Engineering  Tokyo Institute of Technology 

Research Areas (Number of the published data : 1)
Fundamental Informatics 

Proposed theme of joint or funded research (Number of the published data : 2)
秘密分散法に関する研究 
情報セキュリティに関する研究 
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Bibliography (Number of the published data : 2)
ITセキュリティソリューション大系 下巻  フジテクノシステム  2004 
情報セキュリティ事典  共立出版  2003 
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Papers (Number of the published data : 12)
General secret sharing schemes using hierarchical threshold scheme  IEICE Trans. Fundamentals  2019/09 
Improvement of general secret sharing scheme reducing shares distributed to specified participants  IEICE Trans. Fundamentals  2019/06 
Recursive general secret sharing scheme based on authorized subsets  International Journal of Machine Learning and Computing (IJMLC)  2019/01 
New general secret sharing scheme based on unauthorized subsets: improvement of information rates for specified participants  Journal of Information Processing  2016/09/15 
New secret sharing schemes realizing general access structures  Journal of Information Processing  2015/09 
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Research presentations (Number of the published data : 34)
Oral presentation(general)  New general secret sharing scheme using hierarchical threshold scheme: improvement of information rates for specified participants  6th International Conference on Information Systems Security and Privacy (ICISSP 2020)  2020/02/26 
Oral presentation(general)  Multiple assignment secret sharing scheme using hierarchical threshold scheme  The 12th International Conference for Internet Technology and Secured Transactions (ICITST-2017)  2017/12/12 
Oral presentation(general)  Improvement of information rates for specified participants in general secret sharing schemes  14th International Conference on Privacy, Security and Trust (PST2016)  2016/12/14 
Oral presentation(general)  A construction method of secret sharing schemes based on authorized subsets  2008 International Symposium on Information Theory and its Application (ISITA2008)  2008/12 
Oral presentation(general)  Efficient Multiple Assignment Secret Sharing Schemes  2007 IEEE International Symposium on Information Theory  2007/07 
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Prizes (Number of the published data : 2)
IEICE Best Paper Award  2005/05  Domestic 
SCIS Paper Award  2002/01  Domestic 
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Research expenses (Number of the published data : 3)
Grant-in-Aid for Scientific Research  属性を考慮した階層型アクセス構造を実現する秘密分散法の具体的な構成法  2018/04/01-2021/03/31 
Grant-in-Aid for Scientific Research  情報比の制約を考慮した一般アクセス構造を実現する秘密分散法の具体的な構成法  2015/10/01-2018/03/31 
Grant-in-Aid for Scientific Research  大容量データに適した秘密分散法に関する研究  2008/04/01-2010/03/03 
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Memberships of academic societies (Number of the published data : 2)
電子情報通信学会 
情報処理学会 
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