Okamoto Eiji

J-GLOBAL         Last updated: Jan 13, 2017 at 13:57
 
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Name
Okamoto Eiji
E-mail
okamotorisk.tsukuba.ac.jp
Degree
Doctor of Engineering(Tokyo Institute of Technology)

Research Areas

 
 

Academic & Professional Experience

 
 
   
 
Professor, University of Tsukuba Faculty of Engineering, Information and Systems
 

Committee Memberships

 
2004
 - 
2007
Institute of Electrical and Electronics Engineers (IEEE)  IT (Information Theory) Associate Editor
 
2006
 - 
2008
Information Processing Society of Japan  Director
 
2002
 - 
2003
Information Processing Society of Japan  Chair of Computer Security Special Interest Group
 
2006
 - 
2007
THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS.  Vice Chair of The Engineering Sciences Society
 
1995
 - 
1996
THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS.  Chair of Information Security Technical Research Group
 

Awards & Honors

 
Jun 2013
Contribution Award, IPSJ
 
Oct 2011
JWIS Best Paper Award, JWIS
 
Achieving Identity-based Encryption Enabled SSL/TLS and Its Implementation on the Open SSL and Apache HTTP Server
Sep 2009
CHES Best Paper Awards, CHES 2009
 
Hardware Accelerator for the Tate Pairing in Characteristic Three Based on Karatsuba-Ofman Multipliers
May 2008
IPSJ Best Paper Award, IPSJ
 
Sep 2007
CHES Best Paper Awards, CHES 2007 Organizing Committee
 
J.-L. Beuchat, N. Brisebarre, J. Detrey and E. Okamoto; "Arithmetic Operators for Pairing-Based Cryptography", CHES 2007, LNCS 4727, Springer-Verg, pp.239-255, 2007

Published Papers

 
Goto,Nasato;Kanaoka,Akira;Okada,Masayuki;Okamoto,Eiji
Journal of Information Processing   23(5) 613-622   2015
Given the current security situation on the Internet, it is important to determine the trust of the communication routes between a client and server. However, such determination can only be established by end terminals such as clients and servers,...
INOMATA,Atsuo;OKAMOTO,Eiji
Computer Software   30(2) 14-22   Apr 2013
Cryptography is one of basis technologies for safety communication. The cryptography strength depends on a difficulty of the cryptanalysis. The security of most-used RSA is primarily tied to the difficulty of factoring large composite numbers. Of ...
Liu,Yang;Kanayama,Naoki;Saito,Kazutaka;Teruya,Tadanori;Uchiyama,Shigenori;Okamoto,Eiji
JSIAM Letters   6(0) 69-72   2014
The pairing-based cryptosystem was proposed in 2001, and it provides efficient implementations of identity-based encryption (IBE) and attribute-based encryption (ABE). In 2010, Costello and Stebila introduced the concept of fixed argument pairing,...
A Note on Efficient Software Implementation of the Scalar Multiplication over Barreto-Naehrig Curves
TERUYA,Tadanori;KANAYAMA,Naoki;OKAMOTO,Eiji
Technical report of IEICE. ISEC   112(39) 11-18   May 2012
In this paper, we describe a design of efficient software implementation of the scalar multiplication over the subgroup, which is characterized as the p-th Frobenius endomorphism and the p-scalar multiplication are identical, of Barreto-Naehrig cu...
Evaluation of Probabilistic Packet Marking Methods using Arrival Probabilisity of Marked Packets
GOTO,Nasato;KANAOKA,Akira;OKADA,Masayuki;OKAMOTO,Eiji
IEICE technical report. Information and communication system security   112(315) 31-36   Nov 2012
Probabilistic Packet Marking (PPM) is one of the IP traceback technologies which is used to defense Denial of Service (DoS) attack. Existing PPM methods are roughly divided into two groups, one is using Static Marking Probability, the other is usi...

Books etc

 
TELECOM FRONTIER
岡本,栄司
テレコム先端技術研究支援センター   Jun 2013   
回路網理論的グラフ理論の基礎をなす概念について
Okamoto,Eiji
Mar 1978   
通信のセキュリティ・信頼性とVLSI
中村勝洋;岡本栄司 (Part:Contributor)
電子通信学会誌   Feb 1986   
DSPの秘匿への応用
岡本栄司;中村勝洋
情報処理   Nov 1989   
Series of Cryptography(in Japanese)
岡本栄司
bit   Jan 1991   

Conference Activities & Talks

 
Construction of a Multi-Domain Functional Encryption System on Functional Information Infrastructure
Niwa,Yusuke;Kanaoka,Akira;Okamoto,Eiji
16th International Conference on Network-Based Information Systems (NBiS)   
プロキシ型しきい値パスワード鍵共有
小林佑行;矢内直人;西出隆志;花岡悟一郎;岡本,栄司
SCIS2014, 3D5-3   21 Jan 2014   
動的かつ並列化された検索可能対称暗号の改良方式
小岩敬太;金岡晃;岡本,栄司
SCIS2014, 2C4-2   21 Jan 2014   
関数型暗号の実装仕様に関する考察
長谷川佳祐;西出隆志;岡本,栄司
SCIS2014, 2C3-3   21 Jan 2014   
Computing Fixed Argument Pairings with the Elliptic Net Algorithm
Liu,Yang;Naoki,Kanayama;Kazutaka,Saito;Tadanori,Teruya;Shigenori,Uchiyama;Eiji,Okamoto
SCIS2014, 2E1-5   21 Jan 2014   

Research Grants & Projects

 
Asiacrypt2009
Project Year: Jan 2009 - Dec 2009
Asiacrypt2009
Project Year: Jan 2009 - Dec 2009
Asiacrypt2009
Project Year: Jan 2009 - Dec 2009
Software and Hardware Components for Pairing-Based Cryptography
Project Year: Apr 2008 - Mar 2009
Research on template technology for inheriting incidents response ability
Project Year: Jul 2012 - Mar 2013

Patents

 
2006-109244 : Key Sharing Method and Its Equipment
岡本栄司;岡本, 健;伊藤忠彦
2008-224855 : IDベース署名システムおよびIDベース署名方法
SBIネットシステムズ(株);岡本健;岡本栄司
2008-298526 : 電子署名システム、鍵合意システム、電子署名方法および鍵合意方法
SBIネットシステムズ(株);岡本健;岡本栄司