Profile

SAKO, Kazue

Professor, School of Computer Science and Engineering, Waseda University

Short Bio

After receiving her B.S. in mathematics from Kyoto University, she joined NEC Central Research Labs where she engaged in studying secure cryptographic protocols.

Since April 2020, She is a Professor at the Department of Information Science and Engineering, School of Fundamental Science and Engineering, at Waseda University.

▶︎Papers

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Papers before 2020(First Author)

An Implementation of a Mix-Net Based Network Voting Scheme and Its Use in a Private Organization. Towards Trustworthy Elections Furukawa・Mori・Sako 2010: 141-154 (14)
Anonymous authentication: For privacy and security Sako, K.,Yonezawa, S., Teranishi, I.NEC Journal of Advanced Technology 2(1), pp. 79-83 2005
A Network Voting System Using a Mix-net in a Japanese Private Organization, Sako, DIMACS Workshop on Electronic Voting(Center for Discrete Mathematics & Theoretical Computer Science (DIMACS)), 2004 (3)
How to secure network application systems using cryptographic protocols - Electronic voting systems case, Sako NEC Research and Development 43(3), pp. 191-194, 2002
An Implementation of a Universally Verifiable Electronic Voting Scheme based on Shuffling, Furukawa, J., Miyauchi, H., Mori, K., Obana, S., Sako, K., Int Conf on Financial Cryptography & Data Security (FC)(Int Financial Cryptography Assoc (IFCA)), 2002 (52)
Efficient Receipt-free Voting Based on Homomorphic Encryption, Sako, Hirt, EuroCrypt　Vol.LNCS1807 p.539-556, 2000(530)
An AuctionProtocol Which Hides Bids of Losers, Sako, Int Workshop on Practice & Theory Public Key Cryptography (PKC)(Int Assoc for Cryptologic Research (IACR))Vol.LNCS 1751 p.422-432, 2000 (132)
Implementation of a Digital Lottery Server on WWW, Sako, CQRE (Secure) Exhibition & Congress(IEEE Computer Soc), 1999 (17)
Designated Verifier Proofs and Their Applications, SakoJakobsson・Impagliazzo, EUROCRYPT 96 p.143-154, 1996　(930)
Generating Statistical Information in Anonymous Surveys, Sako (IEICE))Vol.E79-A No.4 p.507-512, 1996(11)
Receipt-free Mix-type Voting Scheme - A Practical Solution to the Implementation of a Voting Booth -, Sako・Kilian, EuroCrypt　Vol.921 p.393-403, 1995 (612+5)
Secure Voting Using Partially Compatible Homomorphisms, Sako・Kilian, Crypto(Int Assoc for Cryptologic Research (IACR))No.839 p.411-424, 1994 (201)
Electronic Voting Scheme Allowing Open Objection to the Tally, Sako (IEICE)) Vol.E77-A No.1 p.24-30, 1994 (83)
Key Distribution System for Mail Systems Using ID-related Information, Sako(Tanaka)・Okamoto, Computers & Security(Pergamon Press Inc)Vol.10 No.1 p.25-33, 1991
Key Distribution System Using ID-related Information Directory Suitable for Mail Systems, Sako・Okamoto, SECURICOM p.115-122, 1990
Realization of RSA Cryptosystem using a Digital Processor, Sako(Tanaka)・Okamoto, IEEE Int Symp on Information Theory (ISIT)(Inst of Electrical & Electronics Engineers (IEEE))p.250, 1988

Papers before 2020(Co-authored)

A proposal on an electricity trading platform using blockchain Tanaka, K., Abe, R., Nguyen-Van, T., Yamazaki, Y., Kamitamari, T., Sako, K., Koide, T. 2018 Advances in Transdisciplinary Engineering 7, pp. 976-983
Architecture Optimization of Group Signature Circuits for Cloud Computing Environment, Morioka・Furukawa・Sako・Nakamura, SASIMI2012(IEEE), 2012
Flexible Architecture Optimization and ASIC Implementation of Group Signature Algorithm using a Custimized HLS Methodology, Morioka・Isshiki・Obana・Sako, IEEE Int. Symposium on Hardware-Oriented Security and Trust(IEEE), 2011(8)
Implementation of LSI for Group Signature Scheme, Sako・Morioka・Araki・Isshiki・Obana, Workshop on Anonymous Digital Signatures: mechanisms and usages(TRUST), 2010
IC Card-Based Single Sign-On System that Remains Secure under Card Analysis, Furukawa・Obana・Sako, ACM Workshop on Digital Identity Management (DIM)(Assoc for Computing Machinery (ACM)), 2009 (5)
How to Implement Furukawa-Imai Group Signature Scheme with Barreto-Neahrig Curve, Furukawa・Sako・Okimoto・Nogami・Nakanishi・Sakemi・Takeuchi, Int Workshop on Security (IWSEC)(組織委員会), 2009
K-Times Anonymous Authentication, Teranishi・Furukawa・Sako (IEICE))Vol.E92-A No.1 p.147-165, 2009(9)
An Efficient Publicly Verifiable Mix-net for Long Inputs, Furukawa ・Sako (IEICE))Vol.E90-A No.1 p.113-127, 2007 (3)
Using Group Signatures for Identity Management and its Implementation, Isshiki・Mori・Sako・Teranishi・Yonezawa, ACM Workshop on Digital Identity Management(DIM), 2006 (36)
The Possibility of Cryptograhic e-voting with Mobile Phones, Mori・Sako, Workshop on Trustworthy Elections (WOTE)(Int Assoc for Voting Systems Sciences (IAVoSS)), 2006
k-times Anonymous Authentication with a Constant Proving Cost, Teranishi・Sako, Int Workshop on Practice & Theory Public Key Cryptography (PKC)(Int Assoc for Cryptologic Research (IACR)), 2006 (30
An Efficient Publicly Verifiable Mix-net for Long Inputs, Furukawa・Sako, Int Conf on Financial Cryptography & Data Security (FC)(Int Financial Cryptography Assoc (IFCA)), 2006 (7)
k-Times Anonymous Authentication, Teranishi・Furukawa・Sako, AsiaCrypt, 2004 (107)
An Efficient Scheme for Proving a Shuffle, Furukawa・Sako, Crypto(Int Assoc for Cryptologic Research (IACR))Vol.LNCS 2139 p.368-387, 2001 (319)
Fault Tolerant Anonymous Channel, Ogata・Kurosawa・Sako・Takatani, Int Conf of Information & Communications(IACR/IEICE)Vol.LNCS 1334 p.440-444, 1997 (153)
Proposal for Cryptographic Key Distribution System Based on Identification Information Okamoto, E.,Sako( Tanaka), K., Systems and Computers in Japan 21(4), pp. 76-84 1900
Key distribution system based on identification information, Okamoto・Sako(Tanaka), IEEE Journal of Selected Areas in Communications(Inst of Electrical & Electronics Engineers (IEEE))Vol.7 No.4 p.481-485, 1989
Key distribution system based on identification information. Okamoto, E., Sako(Tanaka), K. IEEE Journal on Selected Areas in Communications 7(4), pp. 481-485 1989
Identity-based information security management system for personal computer networks, Okamoto・Sako, IEEE Journal of Selected Areas in Communications(Inst of Electrical & Electronics Engineers (IEEE))Vol.7 No.2 p.290-2940, 1989
Key Distribution Systems Based on Identification Information, Okamoto・Sako, IEEE Grobal Communications Conf (GLOBECOM)(Inst of Electrical & Electronics Engineers (IEEE))Vol.1 p.108-111, 1987

▶︎Presentations

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「How Cryptographic Protocols help Design Healthy Society」9th International Congress on Industrial and Applied Mathematics (ICIAM) Invited Talk, July 2019
Dice Rolls for Online Games using Blockchain with Provable Properties, Teranishi, Sako SCIS 2019
「Blockchain」, Sako, 6th International Cryptology and Information Security Conference 2018 (Cryptology2018) Invited Talk, July 2018
「JSIAM activities to encourage Women Researchers」 Sako, Gender Gap in Science ~ A regional workshop in Taiwan ICSU Workshop Nov. 2017
「Where did Alice and Bob go, and can blockchain help to bring them back? 」 Sako International Workshop on Security (IWSEC) Keynote talk, 2017
「How Blockchain Works, and How It Helps」, Sako, IEICE Information and Communication Technology Forum (ICTF) keynote talk 2017
「How Cryptography Helps Enhancing Privacy」, Sako, TRUSTECH, 2016
「How Blockchain Helps Crypto Protocols」, Sako, The New Context Conference in SF, 2016
「CPDP Panel: Reform of Data Protection in Japan」, Sako, Computers, Privacy and Data Protection, 2016
「Personal data ecosystem -- Empowering users with their data--」Sako, LYRICS workshop(LYRICS), 2015
「IT Security and Privacy for Human Society」, Sako, IEICE Information and Communication Technology Forum (ICTF), 2014
「Empowering Users--New Personal Data Ecosystem」, Sako, Trust in the Digital World: enabling the economics of trust (EEMA, TDL), 2014
「Group Signatures」, Sako, Meeting on Privacy-Enhancing Cryptography(NIST), 2011
「Anonymous Authentication - An Approach to Balance Security and Privacy Concerns」-, Sako, DAAD in Tokyo, 2008
「A Network Voting System Using a Mix-net in a Japanese Private Organization」, Sako, DIMACS Workshop on Electronic Voting(Center for Discrete Mathematics & Theoretical Computer Science (DIMACS)), 2004 (3)
「An Implementation of a Universally Verifiable Electronic Voting Scheme based on Shuffling」, Sako・Mori・Furukawa・Obana・Miyauchi, Int Conf on Financial Cryptography & Data Security (FC)(Int Financial Cryptography Assoc (IFCA)), 2002 (52)
「An AuctionProtocol Which Hides Bids of Losers」, Sako, Int Workshop on Practice & Theory Public Key Cryptography (PKC)(Int Assoc for Cryptologic Research (IACR))Vol.LNCS 1751 p.422-432, 2000 (132)
「Receipt-free Mix-type Voting Scheme - A Practical Solution to the Implementation of a Voting Booth -」, Sako・Kilian, EUROCRYPT　LNCS Vol.921 p.393-403, 1995 (612+5)
「Secure Voting Using Partially Compatible Homomorphisms」, Sako・Kilian, CRYPTO 94 LNCS No.839 p.411-424, 1994 (201)
Electronic Voting Scheme Allowing Open Objection to the Tally, Sako SCIS 1993
「Key Distribution System Using ID-related Information Directory Suitable for Mail Systems」, Sako・Okamoto, SECURICOM p.115-122, 1990
「Realization of RSA Cryptosystem using a Digital Processor」, Sako・Okamoto, IEEE Int Symp on Information Theory (ISIT)(Inst of Electrical & Electronics Engineers (IEEE))p.250, 1988

Academic Services

IPSJ Director
IACR World Cryptography Real World Crypto Steering Committee
IEEE Transactions on Dependable and Secure Computing Associate Editor
The 17th ACM ASIA Conference on Computer and Communications Security AsiaCCS 2022 Program Co-chair
IACR Test-of-Time Award 2022 Selection Commitee Member
IACR Real World Crypto RWC 2022 Program Commitee Member

Past Services

The Casper Bowden Award for Outstanding Research in Privacy Enhancing Technologies 2021 PET Award Commitee Member
IACR Public Key Cryptography Steering Committee (2018-2020)
JSIAM 26th President
IEICE Vice Chair (2017-2018)
ACNS 2021 「Applied Cryptography and Network Security」 Program Co-chair
ACM Advances in Financial Technologies - AFT 2020 Program Committee Member
ESORICS 2019 「European Symposium on Information and Computer Security」 Program Co-Chair
IACR PKC2019 「Public Key Cryptography」 Program Co-Chair
FC2018 「Financial Cryptography and Data Security」 Program Co-Chair
FC2013 「Financial Cryptography and Data Security」 General Chair
CT-RSA 2016 「RSA Conference Cryptographer's Track」 Program Chair
IACR Asiacrypt 2012 Program Co-Chair
IACR Asiacrypt 2013 Program Co-Chair

Other Works

MyData Japan Vice Chair
Sovrin Foundation Trustee (-June 2020)
JST Presto Advisor (IoT)
JST Presto Advisor (Math)
Science Council of Japan Member (2014-2026)

Past Talks

Sep. 5, 2019

FINSUM「Blockchain-based Financial System」(Moderator)

Waseda univ.

Sako Lab.