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Shigeichiro Yamasaki


FacultyDepartment of Information and Computer Science / Graduate School of Industory
DegreePh.D. Information Science
Commentator Guide
Last Updated :2019/10/21

Education and Career

Academic & Professional Experience

  •   2003 04 ,  - 現在, professor, Kinki University
  •   1987 04 ,  - 2003 03 , Fujitsu Laboratory LTD.
  •   1983 04 ,  - 1987 03 , Fujitsu LTD.

Research Activities

Research Areas

  • Informatics, Computer system/Network, identity management
  • Informatics, Fundamental theory of informatics

Research Interests

  • local currency, electric money, social information infrastructure, agricultural robot, medical information control, authorization, authentication, e-government, cloud computing

Published Papers

  • Consensus and governance of blockchain economy, Shigeichiro Yamasaki, JOHO KANRI, 60(6), 412 - 419, Sep. 2017 , Refereed
  • Proposed Classification of Blockchains Based on Authority and Incentive Dimensions, Hitoshi Okada, Shigeichiro Yamasaki, Vanessa Bracamonte, 19th IEEE International Conference on Advanced Communications Technology (ICACT2017), 593 - 597, Feb. 22 2017 , Refereed
  • 社会を変えるブロックチェーン技術 5)ブロックチェーンの分散台帳を利用した電子投票による集合知の構成―対称的な非集中型監査と絶対中立的な非可逆的記録―, 山崎重一郎, 情報処理, 57(12), 1204‐1209, Nov. 2016
  • Framework for Information Sharing with Privacy and Priority Control in Long-Term Care in Japan, Shoko Miyagawa , Shigeichiro Yamasaki , Eiko Uchiyama, Donald L. Amoroso, International Journal of E-Health and Medical Communications, 5(1), Jan. 2014 , Refereed
  • A Resilient Service for Survivor Identification in Large-Scale Disasters., Shigeichiro Yamasaki, 12th IEEE/IPSJ International Symposium on Applications and the Internet, SAINT 2012, Izmir, Turkey, July 16-20, 2012, 239 - 244, 2012 , Refereed
  • A Trust Rating Method for Information Providers over the Social Web Service: A Pragmatic Protocol for Trust among Information Explorers and Information Providers., Shigeichiro Yamasaki, 11th Annual International Symposium on Applications and the Internet, SAINT 2011, Munich, Germany, 18-21 July, 2011, Proceedings, 578 - 582, 2011 , Refereed
  • A Dynamic Trust Estimation Method for 'Persona' from the Human Relationship of Social Web., Shigeichiro Yamasaki, Tenth Annual International Symposium on Applications and the Internet, SAINT 2010, Seoul, Korea, 19-23 July, 2010, Proceedings, 300 - 303, 2010 , Refereed
  • A Pseudo Identity Based Location Privacy Framework for Local Traffic Support Systems, YAMASAKI SHIGEICHIRO, 情報処理学会論文誌ジャーナル(CD−ROM), 50(4), 1334-1346, Apr. 15 2009
  • A Support System for Service Promotion in Business Oriented NPOs Using E-Community Currency., Shoko Miyagawa,Kazutaka Akiyama,Shigeichiro Yamasaki,Fumiko Uryuu,Michiko Higo, 2005 IEEE/IPSJ International Symposium on Applications and the Internet Workshops (SAINT 2005 Workshops), 31 January - 4 February 2005, Trento, Italy, 452 - 455, 2005 , Refereed
  • Agent Technology on the Internet. 4. Secured Agent Community Framework with a VPC Platform., OKADA MAKOTO, YAMAZAKI SHIGEICHIRO, 電気学会誌, 電気学会誌 = The journal of the Institute of Electrical Engineers of Japan, 122(10), 681 - 684, Oct. 2002
  • Collaboration among Agents in Logical Network of Peer-To-Peer Services., Tadashige Iwao,Yuji Wada,Shigeichiro Yamasaki,Masatoshi Shiouchi,Makoto Okada,Makoto Amamiya, 2002 Symposium on Applications and the Internet (SAINT 2002), 28 January - 1 February 2002, Nara City, Japan, Proceedings, 6 - 7, 2002 , Refereed
  • P2P Network Systems, Yamasaki Shigeichiro, Journal of Japanese Society for Artificial Intelligence, Journal of Japanese Society for Artificial Intelligence, 16(6), 834 - 840, Nov. 2001
  • A Framework for the Next Generation of E-Commerce by Peer-to-Peer Contact: Virtual Private Community., Tadashige Iwao,Yuji Wada,Shigeichiro Yamasaki,Masatoshi Shiouchi,Makoto Okada,Makoto Amamiya, 10th IEEE International Workshops on Enabling Technologies: Infrastructure for Collaborative Enterprises (WETICE 2001), 20-22 June 2001, Cambridge, MA, USA, 340 - 341, 2001 , Refereed
  • One Stop Service., YAMASAKI Shigeichiro, The Journal of the Institute of Electronics, Information, and Communication Engineers, 電子情報通信学会誌, 83(2), 127 - 131, Feb. 2000 , Refereed
  • A Wireless LAN Based Metropolitan Area Network (New Development of Regional Network), YAMASAKI Shigeichiro, INOUE Takashi, KAWANE Yuji, ARAKI Keijiro, IPSJ Magazine, 情報処理, 41(1), 26 - 31, Jan. 2000
  • A Certificate Infrastructure Model for Integrated Cross-authentication with Warranty and Use Policy Control(Special Issue on Multimedia Communication and Distributed Processing), YAMASAKI SHIGEICHIRO, ARAKI KEIJIRO, IPSJ Journal, 情報処理学会論文誌, 40(1), 296 - 309, Jan. 1999 , Refereed
    Summary:The validity of a digital signature for a digital certificate is insufficient to trust it because berification of earranty and assigned use policy of the digital certificate is indispensable. In this paper, we propose a cross authentication infrastructure that integrates a variety of services that require different use policies and warranties. We describe design and implementation of a prototype system for this model. The significant feature of our model is to separate the function of a certificate authority into "issuing authority, " "registration authority" and "use policy approval authority". We call this model "the separation of three authority models for digital certification system." We utilize trustable certificate repository for cross authentication. The warranty information is not embedded into a digital certificate in our model. Warranty information of a digital certificate is provided by the certificate repository. Our prototype system can provide an integrated service of servers that requires different use policies and warranties by only one certificate. Our certification system also endure practical use through our experimentation.
  • Interpenetration of the Internet and Organization. Trust and Reputation in the Internet. Social Applications of the Mutual Crediting System., MIYAGAWA SHOKO, YAMASAKI JUICHIRO, Business Review, 46(2), 50 - 74, Nov. 1998 , Refereed
  • On a Mutual Authentication Method for a Mobile Agent and its User, Shigeichiro Yamasaki,Keijiro Araki, The 11th International Conference on Information Networking (ICOIN-11), 1997 , Refereed
  • A Parallel Cooperation Model for Natural Language Processing., Shigeichiro Yamasaki,Michiko Turuta,Ikuko Nagasawa,Kenji Sugiyama, FGCS 1992, 405 - 413, 1992 , Refereed

Books etc

  • The World of mathematics (Newton Mook), Shigeichiro Yamasaki, Supervisor, virtual currency and blockchain, Newton press,   2019 05 , 9784315521634
  • FinTech World Dictionary 2019-2020, Shigeichiro Yamasaki, Contributor, blockchain, Nikkei BP,   2019 03
  • Newton, Shigeichiro Yamasaki, Supervisor, virtual currency and blockchain,   2018 09 , B07G1ZS3QC
  • FinTech World Dictionary 2018 - 2019, Shigeichiro Yamasaki, Contributor, blockchain, consensus algorthm, Nikkei BP,   2018 03
  • ブロックチェーン・プログラミング 仮想通貨入門 (KS情報科学専門書), 山崎 重一郎, 安土 茂亨, 田中 俊太郎, Joint Work, 講談社,   2017 08 22 , 4061538314
  • Nikkei FinTech 2017-2018, Shigeichiro Yamasaki, Contributor,   2017 03
  • internet white paper 2017, Contributor, Current status and future of block chains,   2017 01
  • FinTech Revolution, Contributor, Comment on Blocjchain,   2016 09 , 4822237923
  • Nikkei FinTech 2016-2017, Shigeichiro Yamasaki, Contributor, Blockchain,   2016 03
  • インターネット白書2016 20年記念特別版 (NextPublishing), Shigeichiro Yamasaki, Contributor, block chain, インプレスR&D,   2016 02 , 4844397184
  • FinTech革命(日経BPムック), Contributor, block chain, 日経BP社,   2015 12 , 4822271889
  • IT Enabled Services, Shigeichito Yamasaki, Contributor, Chapter5. A Community Based Trust Establishing Mechanism for a Social Web Service, Springer,   2013 01 , 3709114268
  • Telescript言語入門 (Ascii books), James E.White, 山崎 重一郎, 津田 宏, Joint Translation, アスキー,   1996 07 , 4756116566
  • Information seculity, Shigeichiro Yamasaki, Contributor, Chapter 9 PKI,   2003 10 , 978-4274132841

Conference Activities & Talks

  • Virtual Currency Technology and Blockchain Economic Sphere, Shigeichiro Yamasaki,   2019 03 07 , 招待有り
  • On a Blockchain parties, governance and "owning" data, Shigeichiro Yamasaki,   2019 01 12 , 招待有り
  • On the basis of blockchain technology and virtual currency and how to configure its economic sphere, Shigeichiro Yamasaki,   2018 12 07 , 招待有り
  • Blockchains and the basics of virtual currency technology, Shigeichiro Yamasaki,   2018 10 31 , 招待有り
  • Proposal of "ownership" of resources on the block chain and code, game, regulatory three-tier structure, Shigeichiro Yamasaki,   2018 03 15 , 招待有り
  • Regarding the control power and responsibility and ownership between the parties involved in the operation of the block chain, Shigeichiro Yamasaki, IEICE INNS Workshop,   2018 03 01 , 招待有り
  • Consensus and Governance for Blockchain Economy, Shigeichiro Yamasaki, GLOCOM Blockchain Economy Laboratory premium seminar,   2017 09 29 , 招待有り
  • Blockchain and Virtual Currency, Shigeichiro Yamasaki, The Journal for Insights into Business,   2017 07 , 招待有り
  • Blockchain and Virtual Currency, Shigeichiro Yamasaki, FinTech and Financial System in the Future,   2017 03 11 , 招待有り
  • Data Governance for Blockchain as Distributed Ledger , Shigeichiro Yamasaki, IPSJ seminor 2016,   2016 12 22
  • The block chain and reconstruction of the social infrastructure , Shigeichiro Yamasaki, seminor of Japanese economy,   2016 12 14 , 招待有り
  • FinTech and the futre of finacal service, Shigeichiro Yamasaki,   2016 03 29 , 招待有り
  • Is Blockchain valuable?, Shigeichiro Yamasaki, Shinichiro Matsuo, Masanori Kusunoki, OpenID BizDay #9,   2016 02 15 , 招待有り, OpenID foundation
  • virtual currency, Shigeichiro Yamasaki, Ikuo Takahashi, Hitoshi Okada,   2015 11 29 , 招待有り
  • virtual currency bitcoin and blockchain, Shigeichiro Yamasaki,Hitochi Okada, Ikuo Takahashi, Internet week 2015,   2015 11 18 , 招待有り
  • 仮想通貨の技術的イノベーションと課題, 山崎重一郎, 電子情報通信学会大会講演論文集(CD-ROM),   2014 09 09
  • 「非集中的な私」の情報資源をコントロールするWebの新技術とその課題‐OpenID,OAuthを中心にしたWeb認証認可技術とペルソナ‐, 山崎重一郎, 電子情報通信学会技術研究報告,   2008 10 , 招待有り
  • Wireless LAN based Network Infrastracture for Urban Community., YAMASAKI SHIGEICHIRO, INOUE TAKASHI, KAWANE YUJI, ARAKI KEIJIRO, 情報処理学会研究報告,   1998 11 20 , 招待有り
    Summary:We built wireless LAN based network over Momochi area in Fukuoka city. Our purpose to build this network is to propose usage of internet as a new infrastructure for city. We realize the 24-hours connectivity for house of monitors of this experimentation and public facilities of Fukuoka city like a library and a museum over this network. In this paper, we describe the construction of this network, and propose the suitable usage of wireless LAN for urban area and report the construction of our network and some features of this network.
  • "Focus on the Telescript" , the latest trend of the agent oriented script language., YAMAZAKI SHIGEICHIRO, 情報処理学会シンポジウム論文集,   1995 12 , 招待有り


  • Immediate control of smart lock using Bitcoin's second layer by Proof of Payment, Ryota FUKATA, Yuya Fukuda, Sentaro SHINOZAKI, Shigeichiro YAMASAKI, IPSJ Proceedings of Hinokuni Information Symposium 2019,   2019 03
  • A Design of Interest-rate Recordable Cryptocurrency Management Program, 金子 雄介, 長田 繁幸, 安土 茂亨, 岡田 仁志, 山崎 重一郎, 電子情報通信学会技術研究報告 = IEICE technical report : 信学技報, 118, 153, 143, 148,   2018 07 25 ,
  • An Evaluation of Bitcoin Full Node Cluster-Investigation of governance control over block chains by ratio of number of nodes-, 山崎重一郎, 電子情報通信学会技術研究報告, 117, 340(SITE2017 54-61), 1‐4,   2017 12 01 ,
  • Blockchain Based Electric Voting System for Grummet Events, Shigeichiro Yamasaki, 14th Tourism Information Society Workshop, 56, 59,   2016 11 12
  • An Evaluation of Bitcoin Full Node Cluster - Investigation of governance control over block chains by ratio of number of nodes -, Shigeichiro Yamasaki, IEICE,SITE, 117, 340, 1, 4,   2017 12 08 ,
  • A Discussion of Issues Related to Electronic Voting Systems based on Blockchain Technology, Vanessa Bracamonte, Shigeichiro Yamasaki, Hitoshi Okada, Computer Security Symposium 2016 ,   2016 10 11
  • A Discussion of Issues Related to Electronic Voting Systems Based on Blockchain Technology, ブラカモンテ バネッサ, 山崎 重一郎, 岡田 仁志, コンピュータセキュリティシンポジウム2016論文集, 2016, 2, 684, 687,   2016 10 04 ,
  • Feedback Type Collective Intelligence with Non-Condorcet Style Election System Using Blockchain - Application to Social Infrastructure -, Shigeichiro Yamasaki, Hitoshi Okada, Vanessa Rocio Bracamonte Lesma, 2016 IEEE Conference on Norbert Wiener in the 21st Century 13 Jul 2016 IEEE Society on Social Implications of Technology (SSIT),   2016 07 13
  • AK-2-1 Innovations and Issues of Virtual Currency, Yamasaki Shigeichiro, Proceedings of the Society Conference of IEICE, 2014, "SS, 5"-"SS-6",   2014 09 09 ,
  • AC電源周波数センサーを備えた家電制御デバイスとそのソーシャルWeb上の運用による電力需用者側による電源周波数調整について, 山崎重一郎, 情報処理学会シンポジウムシリーズ(CD-ROM), 2013, 2, ROMBUNNO.7F-1,   2013 07 03 ,
  • Requirements Analysis for the Census Registration System of the future Japanese e-Government : A Proposal of the Database Design for the Idealistic Japanese Family Registration Law, YAMASAKI Shigeichiro, IEICE technical report, 110, 430, 51, 55,   2011 02 21 ,
  • Requirements Analysis for the Census Registration System of the future Japanese e-Government : A Proposal of the Database Design for the Idealistic Japanese Family Registration Law, Yamasaki Shigeichiro, IEICE technical report. Social Implications of Technology and Information Ethics, 110, 429, 51, 55,   2011 02 21 ,
  • 診療記録に対する情報トリアージによる個人情報管理の提案, 山崎重一郎, 人工知能学会全国大会論文集(CD−ROM), 26th, ROMBUNNO.3I2-OS-20-10,   2012 ,
  • Special issue on a distribution structure for the privacy sensitive information, YAMASAKI Shigeichiro, IEICE technical report. Social Implications of Technology and Information Ethics, 107, 303, 21, 25,   2007 10 26 ,
  • Requirements Analysis for the Census Registration System of the future Japanese e-Govemment : A Proposal of the Database Design for the Idealistic Japanese Family Registration Law, 山崎 重一郎, 情報処理学会研究報告, 2010, 6,   2011 04 ,
  • A Study for the Requirements of the Formal Social Acts over the Informational Services with Electronic Authorization, YAMASAKI SHIGEICHIRO, 情報処理学会研究報告, 2006, 43(CSEC−33), 63-68, 68,   2006 05 12 ,
    Summary:Present Japanese electronic signature law only recognizes the legal effect to the electronic signature by a natural person. The legal framework which regarding the electronic signature other than the natural person such as automatic electronic signature and electronic authentication is still not exist. In this paper, we examine the requirements of the formal social acts by the information services with electronic authentication or with the automatic electronic signature from the point of view of the speech act theory. We also examine the requirement of the common architecture which supports such kind of social information systems.
  • ペルソナを利用したWeb認証におけるプライバシー保護, 川上清香, 山崎重一郎, 電気関係学会九州支部連合大会講演論文集(CD−ROM), 62nd, ROMBUNNO.02-2P-09,   2009 09 10 ,
  • Some New Web Technologies for the Information Control of the "Decentralized Me" : Web Authentication and Authorization Technologies with OpenID and OAuth and Persona, YAMASAKI Shigeichiro, IEICE technical report, 108, 244, 17, 20,   2008 10 10 ,
  • 人間関係に基づいた情報提供システムのためのプライバシ保護フレームワーク, 山崎重一郎, 宮川祥子, 情報処理学会シンポジウム論文集, 2006, 6−1, 197-200,   2006 07 05 ,
  • 電子署名・認証利用パートナーシップ 企業間情報化に関する調査研究 平成17年度, 松本泰, 山崎重一郎, 大野実, 松山博美, 牟田学, 木村吉博, 小形茂, 電子署名・認証利用パートナーシップ 平成17年度報告書 企業間情報化に関する調査研究, 145P,   2006 ,
  • A Privacy and Identity Management Framework for Information Sharing Systems in Disaster, YAMASAKI SHIGEICHIRO, HAYASHI YUICHI, YAMAMURA TOMOHIRO,MIYAGAWA SHOKO, 情報処理学会シンポジウム論文集, 2005, 13,Vol.1, 109-114,   2005 10 ,
  • A Digital Signature Based Local Money System, YAMASAKI Shigeichiro, Reports of Kyushu school of Engineering, Kinki University, 32, 32, 85, 92,   2004 03 01 ,
    Summary:We propose an electric local money system based on a digital signature called "Travecoup" (Traveling coupon), The electric money of Travecoup is a self-redemption bond with a digital signature. In this paper we describe the features of Travecoup as follows (1) the ownership control for digital money by electronic wallet with user authentication, (2) Multiple use protection mechanism for our digital currency, (3) cooperation of the paper currency and the digital currency by paper as a display device for digital data, (4) the electric operation for paper currency by 2- dimensional bar code an...
  • An Information Aggregation Framework with Privacy and Priority Control for Homecare, MIYAGAWA SHOKO, YAMASAKI SHIGEICHIRO, UCHIYAMA EIKO, 情報処理学会シンポジウム論文集, 2005, 13,Vol.1, 103-108,   2005 10 ,
  • A Digital Sigunature Based Local Money System over The Community PKI : "Travecoup" (Traveling coupon) System, YAMASAKI Shigeichiro, FUJINO Ryoichi, YAMAMURA Tomohiro, NAGAI Kei, IEICE technical report. Social Implications of Technology and Information Ethics, 102, 505, 35, 40,   2002 12 13 ,
    Summary:We propose an electric local money system as a self-redemption bond with digital signature called "Travecoup" (Traveling coupon). In this paper we describe the money issuing, clearance, abutment of the value of money by time on our Travecoup system. We also describe the implication to operate the Travecoup system over the PKI with mutual trust among multiple communities.
  • The design and development of an e-learning promotion system in a semi-closed community, AKIYAMA KAZUTAKA, MIYAGAWA SHOKO+, YAMASAKI SHIGEICHIRO, URYU FUMIKO, HIGO MICHIKO, 情報処理学会シンポジウム論文集, 2004, 11(CD−ROM), 5C-1,   2004 10 20 ,
  • Layered Architecture for the Cooperation of the Multiple Electric Complementary Money Systems, YAMASAKI SHIGEICHIRO, HORIGUCHI YUKA, 情報処理学会シンポジウム論文集, 2004, 11(CD−ROM), 5C-2,   2004 10 20 ,
  • A Support System for Service Promotion In Business Oriented NPOs Using E-Community Currency, MIYAGAWA SHOKO, AKIYAMA KAZUTAKA, YAMASAKI SHIGEICHIRO, YAMASAKI SHIGEICHIRO, URYU FUMIKO, HIGO MICHIKO, 情報処理学会シンポジウム論文集, 2004, 11(CD−ROM), 4C-4,   2004 10 ,
  • On the Trust Domain for P2P Platforms with Agents., YAMASAKI SHIGEICHIRO, IWAO TADASHIGE, SHIOUCHI MASATOSHI, WADA YUJI, OKADA MAKOTO, ARAKI KEIJIRO, 情報処理学会シンポジウム論文集, 2001, 7, 681-686,   2001 06 27 ,
  • On the Management of Dynamic Trust Domains and Those Policies for Decentralized Multi-Agent Systems., YAMASAKI SHIGEICHIRO, ARAKI KEIJIRO, 情報処理学会研究報告, 2000, 80(CSEC−11), 73-78, 78,   2000 09 ,
    Summary:A new type of end-user system that has both a server and client functionality like "Gnutella" become a popular platform of the Internet. We call such platform system "decentralized multi agent system." Every and user of the decentralized multi agent system can be a contents provider when he or she got the contents from another network site. This feature of the systems causes the problem of illegal copy of digital contents. In this paper, we propose a policy management system for our decentralized multi agent system. The feature of our policy management system is that it is able to distribute policy declaration like a privilege of the copyright of digital contents safety without any central control system.
  • A Trust Management System for Signed Data, Yamasaki Shigeichiro, Araki Keijiro, IPSJ SIG Notes, 99, 54, 13, 18,   1999 07 09 ,
    Summary:A verification system for digital signature can output only binary values "success or fail." As the acceptable usage of signed data is limited from the security level of the signature system utilized for it we should have another evaluation system for signed data. In this paper we propose a trust management system for signed data that is exchanged in the Internet. The features of our proposal are (1) the rating of reliability of signed data is evaluated by some trusted third party called "Rating Bureau," (2) information about reliability of signed data is representated by RDF as a meta data which is separated from signed data itself. A program which we call "trust engine" judge the trust level for the signed data with rules and the meta data.
  • Trust and Reputation in the Internet--Social Applications of the Mutual Crediting System, MIYAGAWA Shoko, YAMASAKI Jyuichiro, Business review, 46, 2, 50, 74,   1998 11 ,
  • An Authntication Method for Uploaded Information of the "Job Matching System" over the Internet., YAMASAKI SHIGEICHIRO, MIYAGAWA SHOKO, YAMAMOTO KAORU, SUGA YUJI, KANEKO IKUYO, ARAKI KEIJIRO, 情報処理学会シンポジウム論文集, 98, 12, 195-200,   1998 10 ,
  • Certification entry system for credit information management and mounting of secret key possession confirmation server., NAKAO HIDEKI, SUGA YUJI, YAMAZAKI JUICHIRO, ARAKI KEIJIRO, 電気関係学会九州支部連合大会講演論文集, 51st, 55,   1998 10 ,
  • A key exchange algorithm and a public-key cryptosystem based on graph-isomorphism., SUGA YUJI, YAMASAKI SHIGEICHIRO, ARAKI KEIJIRO, 情報処理学会シンポジウム論文集, 98, 12, 27-32,   1998 10 ,
  • Access Control Method Based on Credible Information Publicized on the Internet., YAMAMOTO KAORU, YAMASAKI SHIGEICHIRO, SUGA YUJI, ARAKI KEIJIRO, 情報処理学会シンポジウム論文集, 98, 12, 147-152,   1998 10 ,
  • An Inter Operation Framework for Local Money Systems., YAMASAKI SHIGEICHIRO, SUGA YUJI, YAMAMOTO KAORU, ARAKI KEIJIRO, 情報処理学会シンポジウム論文集, 98, 8, 323-328,   1998 07 ,
  • The cooperation of registration authorities and the X.500 Directory., SUGA YUJI, YAMASAKI SHIGEICHIRO, ARAKI KEIJIRO, 情報処理学会シンポジウム論文集, 98, 8, 317-322,   1998 07 ,
  • A Privacy Enhanced Access Control Model for Directory Service., YAMASAKI SHIGEICHIRO, SUGA YUJI, MURAKAMI MIYUKI, ARAKI KEIJIRO, 情報処理学会研究報告, 98, 54(CSEC−1), 29-34, 34,   1998 05 ,
    Summary:We propose a privacy enhanced access control model for X.500 directory service. The notion of privacy has various aspects. In this paper, we focused on a notion of a privacy as a right to control own information. Our model is constructed as follows. (1) We provade a new privacy control layer over the X.500 Directory access control. (2) An ACA (access control agent) which observe the requests for access to privacy information in the privacy control layer. (3) The ACA access judge the adviability about the access of privacy information from the trust information of the requester from the directory.
  • Management system of past digital certificates using the Directory System., MURAKAMI MIYUKI, KUWAYAMA MASAYUKI, YAMASAKI SHIGEICHIRO, SUGA YUJI, ARAKI KEIJIRO, 情報処理学会研究報告, 98, 54(CSEC−1), 35-40, 40,   1998 05 ,
    Summary:When we use X.500 directory service to verify a message which was digitaly signed in the past, we meet two problems : non-verifiability problem and non-repudiation problem. Non-verifiability problem is the problem that verifiers can't verify validity to digitaly signaed messages which were signed in the past because they can't get past certificate and certificate revocation information. Non-repudiation problem is the problem that signers of digitaly signed messages can repudiate their messages when the signer's digital certificate was revoked between signing time and vertifiction time. To solve these problems, we propose new certificate revocation information management system which provide past certificates and certificate revocation information using directory service.
  • A proposal for cross-certification over several certificate domains using the X.500 Directory., SUGA YUJI, YAMASAKI SHIGEICHIRO, MURAKAMI MIYUKI, ARAKI KEIJIRO, 情報処理学会研究報告, 98, 54(CSEC−1), 23-28, 28,   1998 05 ,
    Summary:Many Internet protocols and applications employ public-key technology forsecurity purposes and also require a public-key infrastructure (PKI in short) to manage public keys. The X.509 standard constitutes a basis for such an infrastructure, defining data formats and authentication framework. X.509 certificates are already used in multiple appliations. This document proposes cross-certification by using the X.500 Directory, and it is possible to verify certificates on another domain and also extend scopes which PKI users can receive services.
  • A Digital Certification System Model that Enables to Assign Multiple Use Policy to a Digital Certificate, YAMASAKI Shigeichiro, SUGA Yuji, MURAKAMI Miyuki, ARAKI Keijiro, IPSJ SIG Notes, 98, 8, 43, 48,   1998 01 ,
    Summary:We propose a practical design model for digital certification system that enables to assign multiple use policy to one digital certificate. In an ordinary digital certificate system, a user must get another digital certificate when the user wants to use another secure service that requires another use policy for the client's certificate, because a use policies of a digital certificate are supplied by the issuer of the certificate and its information is embedded into the digital certificate data itself. The special feature of our model is to deparate the function of a certification authority into registration authority, certificate issuer and use policy assignment authority of a certificate. We call our model "Separation of three authorities of certificate." In our certification system, the function of a digital certificate is restricted to the certification of a person itself. Subjects of policy assignment of a certificate are individual component of our system. This method makes it possible to assign multiple use policies to one certificate of a person.
  • A System Integration Model for Electric Purchase Systems and Electric Payments Systems with A Mobile Agent., YAMAZAKI SHIGEICHIRO, SUGA YUJI, ARAKI KEIJIRO, 情報処理学会研究報告, 97, 104(DPS−85), 127-132, 132,   1997 11 ,
    Summary:In this paper, we propose a model to integrate distributed services over the internet. To examine our model, we picked up a case that integrates electric purchase systems and electric payment systems as an application of our model. In this case, crucial problems are as follows; (1) To integrate these distributed services, the authentication system of the each service must have an ability to judge the equality of individual users of the various kinds of services. To realize this, our model should have some method to exchange digital certificates that have different use policies. (2) From the point of the view of a customer, a purchase and a payment is one transaction. To realize this, our model should have some method to keep a customer's context of distributed processes among servers of shops and servers of banks. As the method to exchange digital certificates of different use policies, we propose "Separation of Tree Authority Model (S3A model)" which divides the authority of "Certificate Authority (CA)" to authentication of an individual, issue certificate and application of use policy. As the method to keep a context of a customer who use distributed services, we propose a "Secure Mobile Transaction Layer (SMTL)" that utilize mobile agent technology.
  • Proposal of zero knowledge interactive proof protocol using a self relative code., SUGA YUJI, YAMAZAKI JUICHIRO, ARAKI KEIJIRO, 電気関係学会九州支部連合大会講演論文集, 50th, 273,   1997 10 ,
  • A natural language processing system for parallel inference machine., YAMASAKI SHIGEICHIRO, SUGIYAMA KENJI, SUZUKI KAORI, TAMADA IKUKO, 情報処理学会全国大会講演論文集, 40th, 1, 460-461, 461,   1990 03 14 ,
    Summary:現在, 第5世代コンピュータプロジェクトの一環として並列推論マシンのための自然言語解析システムの研究開発を行っている.その第1歩として並列処理の観点から見て自然と思われる自然言語処理のモデルを考え,そのモデルに基づいてマルチPSI上にプロトタイプシステムLaPutaを構築した.本稿では,LaPutaの処理モデル,解析機構の基本原理及び実装方式について述べる.
  • An Authentication Method for Mobile Agent., YAMAZAKI SHIGEICHIRO, ARAKI KEIJIRO, 情報処理学会ワークショップ論文集, 97, 2, 605-610,   1997 07 ,
  • The parsing system SAX in LTB., YAMASAKI SHIGEICHIRO, HIROTA NAOTO, AKASAKA KOUJI, 情報処理学会全国大会講演論文集, 37th, 2, 1080-1081, 1081,   1988 09 12 ,
  • Effect of parallel cooperatin in parallel analysis of natural langnages., YAMAZAKI JUICHIRO, ICOT研究速報 TM−, 1058, 141-146,   1991 06 ,
  • Evaluation of a prototype of a parallel natural language processing system LaPuta., YAMASAKI SHIGEICHIRO, SUEHIRO KAORI, NAGASAWA IKUKO, SUGIYAMA KENJI, 情報処理学会全国大会講演論文集, 42nd, 3, 3.86-3.87,   1991 03 ,
  • Evaluation of a prototype of a parallel natural language processing system LaPuta, 山崎 重一郎, 末広 香緒里, 長沢 郁子, 杉山 健司, 全国大会講演論文集, 42, 0, 86, 87,   1991 02 25 ,
  • The ninth symposium on fifth generation computers.The proceedings.( Sponsor : The Ministry of International Trade and Industry )., AIKAWA SEIICHI, YAMAZAKI JUICHIRO, TANAKA YUICHI, YASUKAWA HIDEKI, HAWLEY D J, HASEGAWA RYUZO, SANO HIROSHI, ISHIKAWA MIKIHITO, MATSUMOTO YUKINORI, 第9回第五世代コンピュータに関するシンポジウム 平成2年度 予稿集, 24P,   1991 ,
  • Parallel natural language analysis system LaPuta., YAMAZAKI JUICHIRO, ICOT研究論文 TR−, 569, 100-112,   1990 07 ,
  • Debugging environment of sentence analysis system SAX., yamasaki shigeichiroO, SUGIMURA RYOICHI, AKASAKA KOJI, MATSUMOTO YUJI, ICOT研究論文 TR−, 367, 1-6,   1988 04 ,
  • A Pseudo Identity Based Location Privacy Framework for Local Traffic Support Systems, Shigeichiro Yamasaki, Transactions of Information Processing Society of Japan, 50, 4, 1334, 1346,   2009 04 15 ,
    Summary:Recent years, many succeeded web companies shows that the personal information such as histories of searching or histories of purchasing of a person is valuable. Such kinds of personal information is also valuable for various public services like a local traffic control system. However, it is difficult to manage personal information safely for ordinal private companies or organizations. We have been developing an integrated personal information management system which we call ‘Identity Shelter.’ We intend for our Identity Shelter to be a kind of the social information infrastruc...


  • 仮想通信路および仮想通信路を制御するエージェント連携システムおよびエージェント連携方法, 塩内 正利, 岩尾 忠重, 岡田 誠, 山崎 重一郎, 和田 裕二, 毛利 隆夫, 西ヶ谷 岳, 福田 茂紀, 特願2001-262097, 特開2002-157231, 特許第4574085号
  • 共有鍵暗号型のICカードによるインターネット上のユーザー認証方式, 山崎 重一郎, 大森 幹之, 藤野 亮一, 特願平11-242153, 特開2001-069138, 特許第3872616号
  • 情報検索装置, 山崎 重一郎, 特願平5-236796, 特開平7-093353, 特許第3373003号
  • 情報アクセス制御装置および情報アクセス制御方法, 山崎 重一郎, 特願2000-193871, 特開2002-014862
  • 携帯電話とICカードを利用した個人認証システム, 山崎 重一郎, 特願2000-056375, 特開2001-243196
  • 電子認証用公開鍵の管理方法, 山崎 重一郎, 特願平9-146932, 特開平10-336172
  • ハイパーテキスト作成装置及び方法並びにハイパーテキスト作成プログラムを記録したコンピュータで読み取り可能な記録媒体, 山崎 重一郎, 田澤 和彦, 六条 範俊, 特願平9-144944, 特開平10-111866
  • 情報サービスシステム, 山崎 重一郎, 特願平6-285167, 特開平8-147365
  • 知識の集積及び共有装置, 山崎 重一郎, 特願平6-014639, 特開平7-225795
  • マルチメディア知識ベ−ス装置,及び、情報提供装置, 山崎 重一郎, 特願平5-174598, 特開平7-028687
  • 大規模知識ベース構築方式, 山崎 重一郎, 斉藤 由香梨, 斉藤 孝広, 特願平4-294243, 特開平6-149883
  • マルチメディア単語辞書及びその検索装置, 斎藤 由香梨, 山崎 重一郎, 斉藤 孝広, 特願平4-277015, 特開平6-131403
  • 索引語管理装置, ▲鶴▼田 道子, 山崎 重一郎, 特願平4-005713, 特開平5-189430
  • Virtual communication channel and virtual private community, and agent collaboration system and agent collaboration method for controlling the same , M Shiouchi, T Iwao, M Okada, S Yamasaki, Fujitsu Limited, 特願US7171441 B2

Awards & Honors

  •   2016 01 , Fkuoka Pref Office, Fukuoka Ruby Award
  •   2014 09 , The Society of Socio-Infomatics, Excellent Book Award, Shiro Uesugi (Ed). IT Enabled Services
  •   2013 01 , Fukuoka pref. office, Fukuoka Ruby Award

Research Grants & Projects

  • Strategic Information and Communications R&D Promotion Programme, A Secure and Barrier –Free Online Sharing System for Tacit Knowledge of Elderly Care Services, Akira Iwata


Social Contribution

  • science view, Advisor, YOMIURI,   2017 11 18  - 2017 11 18
  • blockchain, TV or radio appearance, NHK,   2017 02 15  - 2017 02 15
  • Possibilities of virtual currency, Contribution, Nikkei,   2016 08 03  - 2016 08 03