Emura Keita 江村恵太

Researcher Number	30597018
Other IDs	https://orcid.org/0000-0002-8969-3581
Affiliation (Current)	2024: 金沢大学, 電子情報通信学系, 准教授
Affiliation (based on the past Project Information) *help	2024: 金沢大学, 電子情報通信学系, 准教授 2021 – 2023: 国立研究開発法人情報通信研究機構, サイバーセキュリティ研究所, 研究マネージャー 2016 – 2020: 国立研究開発法人情報通信研究機構, サイバーセキュリティ研究所セキュリティ基盤研究室, 主任研究員 2016: 国立研究開発法人情報通信研究機構, サイバーセキュリティ研究所, 主任研究員 2015: 国立研究開発法人情報通信研究機構, ネットワークセキュリティ研究所, 主任研究員 … More 2015: 国立研究開発法人情報通信研究機構, ネットワークセキュリティ研究所セキュリティ基盤研究室, 主任研究員 2014: 独立行政法人情報通信研究機構, ネットワークセキュリティ研究所, 主任研究員 2014: 独立行政法人情報通信研究機構, ネットワークセキュリティ研究所セキュリティ基盤研究室, 主任研究員 2013: 独立行政法人情報通信研究機構, ネットワークセキュリティ研究所セキュリティ基盤研究室, 研究員 2012: 独立行政法人情報通信研究機構, ネットワークセキュリティ研究所セキュリティアーキテクチャ研究室, 研究員 Less
Review Section/Research Field	Principal Investigator Basic Section 60070:Information security-related / Information security / Fundamental theory of informatics Except Principal Investigator Basic Section 60070:Information security-related / Information security
Keywords	Principal Investigator システムセキュリティ / 証明可能安全性 / 鍵隔離公開鍵暗号 / 鍵失効可能IDベース暗号 / 鍵失効機能付きグループ署名 / 署名鍵有効期限付きグループ署名 / 鍵失効機能付き属性ベース暗号 / 鍵失効機能付きIDベース暗号 / 安全性証明の修正 / 国際会議採録 … More / 公開鍵暗号 / 準同型暗号 / 適応的暗号文選択攻撃 / 鍵付き準同型暗号 … More Except Principal Investigator 暗号技術 / サイバー攻撃対策技術 / スマートコントラクト / ブロックチェーン / トークン / 暗号 / 暗号・認証等 / 暗号・認証 Less

サイバー攻撃対策と暗号理論で支えられるスマートコントラクト利用型自動監視技術
- Principal Investigator
  
  面和成
- Project Period (FY)
  2022 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 60070:Information security-related
- Research Institution
  University of Tsukuba
データの利活用を促進するセキュアシステムの証明可能安全性に関する研究Principal Investigator
- Principal Investigator
  
  江村恵太
- Project Period (FY)
  2021 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 60070:Information security-related
- Research Institution
  National Institute of Information and Communications Technology
Autonomous Decentralized Surveillance Technology with High Reliability Based on Blockchain
- Principal Investigator
  
  Omote Kazumasa
- Project Period (FY)
  2019 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 60070:Information security-related
- Research Institution
  University of Tsukuba
Research on Advanced Key Update Technique for Practical Applications of Advanced CryptosystemPrincipal Investigator
- Principal Investigator
  
  Keita Emura
- Project Period (FY)
  2016 – 2018
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Information security
- Research Institution
  National Institute of Information and Communications Technology
Research on Cryptographic Primitives with Easily Verifiable Security
- Principal Investigator
  
  Hanaoka Goichiro
- Project Period (FY)
  2014 – 2018
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Information security
- Research Institution
  National Institute of Advanced Industrial Science and Technology
A cryptographic scheme maintaining security for cloud environmentsPrincipal Investigator
- Principal Investigator
  
  Emura Keita
- Project Period (FY)
  2012 – 2015
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Fundamental theory of informatics
- Research Institution
  National Institute of Information and Communications Technology

All 2023 2022 2021 2020 2019 2018 2017 2016 2013 Other

All Journal Article Presentation Patent

[Journal Article] A Generic Construction of CCA-Secure Identity-Based Encryption with Equality Test against Insider Attacks2023
- Author(s)
  Keita Emura, Atsushi takayasu
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E106.A Issue: 3 Pages: 193-202
- DOI
  10.1587/transfun.2022CIP0012
- ISSN
  0916-8508, 1745-1337
- Year and Date
  2023-03-01
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K11897
[Journal Article] Identity-Based Encryption with Security against the KGC: A Formal Model and Its Instantiations2022
- Author(s)
  Keita Emura, Shuichi Katsumata, and Yohei Watanabe
- Journal Title
  
  Theoretical Computer Science
  
  Volume: 900 Pages: 97-119
- DOI
  10.1016/j.tcs.2021.11.021
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18H05289, KAKENHI-PROJECT-21K11897
[Journal Article] An Anonymous Trust-Marking Scheme on Blockchain Systems2021
- Author(s)
  Teppei Sato, Keita Emura, Tomoki Fujitani, Kazumasa Omote
- Journal Title
  
  IEEE Access
  
  Volume: 9 Pages: 108772-108781
- DOI
  10.1109/access.2021.3097710
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-21K11897, KAKENHI-PROJECT-19H04107
[Journal Article] A Revocable Group Signature Scheme with Scalability from Simple Assumptions2020
- Author(s)
  Keita Emura, Takuya Hayashi
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E103.A Issue: 1 Pages: 125-140
- DOI
  10.1587/transfun.2019CIP0004
- NAID
  130007778805
- ISSN
  0916-8508, 1745-1337
- Year and Date
  2020-01-01
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-19H04107
[Journal Article] Group Signatures with Message-Dependent Opening: Formal Definitions and Constructions2019
- Author(s)
  Keita Emura, Goichiro Hanaoka, Yutaka Kawai, Takahiro Matsuda, Kazuma Ohara, Kazumasa Omote, Yusuke Sakai
- Journal Title
  
  Security and Communication Networks
  
  Volume: 2019 Pages: 1-36
- DOI
  10.1155/2019/4872403
- NAID
  120007133059
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18K18055, KAKENHI-PROJECT-19H04107
[Journal Article] Generic Constructions for Fully Secure Revocable Attribute-Based Encryption2018
- Author(s)
  Kotoko Yamada, Nuttapong Attrapadung, Keita Emura, Goichiro Hanaoka, Keisuke Tanaka
- Journal Title
  
  IEICE Trans. Fundamentals
  
  Volume: E101.A Issue: 9 Pages: 1456-1472
- DOI
  10.1587/transfun.E101.A.1456
- NAID
  130007479446
- ISSN
  0916-8508, 1745-1337
- Year and Date
  2018-09-01
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-16H01705, KAKENHI-PROJECT-17H01695, KAKENHI-PROJECT-16K00198
[Journal Article] Group Signatures with Time-bound Keys Re- visited: A New Model, an Efficient Construction, and Its Implementation2017
- Author(s)
  Keita Emura, Takuya Hayashi, Ai Ishida
- Journal Title
  
  IEEE Transactions on Dependable and Secure Computing
  
  Volume: 印刷中 Issue: 2 Pages: 292-305
- DOI
  10.1109/tdsc.2017.2754247
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17J07416, KAKENHI-PROJECT-16K00198
[Journal Article] New Revocable IBE in Prime-Order Groups: Adaptively Secure, Decryption Key Exposure Resistant, and with Short Public Parameters2016
- Author(s)
  Yohei Watanabe, Keita Emura, Jae Hong Seo
- Journal Title
  
  Cryptology ePrint Archive
  
  Volume: - Pages: 1-28
- Acknowledgement Compliant / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K00198
[Journal Article] Chosen Ciphertext Secure Keyed-Homomorphic Public-Key Encryption2013
- Author(s)
  Keita Emura, Goichiro Hanaoka, Koji Nuida, Go Ohtake, Takahiro Matsuda, Shota Yamada
- Journal Title
  
  IACR Cryptology ePrint Archive
  
  Volume: 2013 Pages: 390-390
- Data Source
  KAKENHI-PROJECT-24700009
[Patent] 情報処理システム、情報処理方法、およびプログラム2023
- Inventor(s)
  江村恵太, 吉見真聡
- Industrial Property Rights Holder
  江村恵太, 吉見真聡
- Industrial Property Rights Type
  特許
- Industrial Property Number
  2023-015081
- Filing Date
  2023
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] Generic Construction of Public-key Authenticated Encryption with Keyword Search Revisited: Stronger Security and Efficient Construction2023
- Author(s)
  Keita Emura
- Organizer
  ACM APKC 2023
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] アカウントアブストラクションを利用したプライバシー保護コントラクトウォレットシステム2023
- Author(s)
  陳浩太, 江村恵太, 面和成
- Organizer
  SCIS 2023
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] アカウントアブストラクションを利用したプライバシー保護コントラクトウォレットシステム2023
- Author(s)
  陳浩太，江村恵太，面和成
- Organizer
  暗号と情報セキュリティシンポジウム2023
- Data Source
  KAKENHI-PROJECT-23K24844
[Presentation] An End-To-End Encrypted Cache System with Time-Dependent Access Control2023
- Author(s)
  Keita Emura, Masato Yoshimi
- Organizer
  ICISSP 2023
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] 準同型性を利用したサイバー攻撃に堅牢な暗号化制御系の構築および数値的評価2022
- Author(s)
  宮本将希, 江村恵太, 小木曽公尚
- Organizer
  自動制御連合講演会
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] State-free End-to-End Encrypted Storage and Chat Systems based on Searchable Encryption2022
- Author(s)
  Keita Emura, Ryoma Ito, Sachiko Kanamori, Ryo Nojima, Yohei Watanabe
- Organizer
  ICEIS 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] 鍵付き準同型暗号の応用による制御システムの秘匿化2022
- Author(s)
  宮本将希, 江村恵太, 小木曽公尚
- Organizer
  CSS 2022
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] A Sealed-Bid Auction with Fund Binding: Preventing Maximum Bidding Price Leakage2022
- Author(s)
  Kota Chin, Keita Emura, Kazumasa Omote, Shingo Sato
- Organizer
  IEEE Blockchain 2022
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] A Sealed-Bid Auction with Fund Binding: Preventing Maximum Bidding Price Leakage2022
- Author(s)
  Kota Chin, Keita Emura, Kazumasa Omote, and Shingo Sato
- Organizer
  The 5th IEEE International Conference on Blockchain
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K24844
[Presentation] 検索可能暗号を用いた暗号化ストレージ・チャットシステムの実装評価2021
- Author(s)
  江村恵太, 金森祥子, 野島良渡邉洋平
- Organizer
  情報セキュリティ研究会
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] Verifiable Functional Encryption Using Intel SGX2021
- Author(s)
  Tatsuya Suzuki, Keita Emura, Toshihiro Ohigashi, Kazumasa Omote
- Organizer
  ProvSec 2021
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] 鍵生成センタに対して安全なIDベース暗号の実装評価 (第2報)2021
- Author(s)
  江間俊太郎, 佐藤裕太, 江村恵太, 大東俊博
- Organizer
  電子情報通信学会ソサイエティ大会
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] An Anonymous Trust-Marking Scheme on Blockchain Systems2021
- Author(s)
  Teppei Sato, Keita Emura, Tomoki Fujitani, and Kazumasa Omote
- Organizer
  IEEE ICBC 2021
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] Implementation and Evaluation of an Identity-Based Encryption with Security Against the KGC2021
- Author(s)
  Shuntaro Ema, Yuta Sato, Keita Emura, Toshihiro Ohigashi
- Organizer
  WICS 2021
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K11897
[Presentation] An Anonymous Trust-Marking Scheme on Blockchain Systems2021
- Author(s)
  Teppei Sato, Keita Emura, Tomoki Fujitani, and Kazumasa Omote
- Organizer
  The IEEE International Conference on Blockchain and Cryptocurrency
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] 入札額の上限漏洩を防止した資金拘束型の封印入札オークション2021
- Author(s)
  陳浩太，江村恵太，佐藤慎悟，面和成
- Organizer
  Computer Security Symposium
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] A Privacy-Preserving Enforced Bill Collection System using Smart Contracts2021
- Author(s)
  Tomoki Fujitani, Keita Emura, and Kazumasa Omote
- Organizer
  The 16th Asia Joint Conference on Information Security
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] スマートコントラクトを用いたプライバシー保護集金システム2021
- Author(s)
  藤谷知季，江村恵太，面和成
- Organizer
  SCIS 2021
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] NEMのブロックチェーンシステムにおける匿名信頼性付与手法の実装・評価2020
- Author(s)
  藤谷知季，江村恵太，面和成
- Organizer
  情報セキュリティ研究会 (ISEC)
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] ブロックチェーンシステムにおける匿名信頼性付与手法の実装・評価2020
- Author(s)
  佐藤哲平，江村恵太，面和成
- Organizer
  暗号と情報セキュリティシンポジウム
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] より効率的で適応的に安全な鍵失効機能付きIDベース暗号の構成2019
- Author(s)
  高安敦, 渡邉洋平, 江村恵太
- Organizer
  暗号と情報セキュリティシンポジウム (SCIS) 2019
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] ブロックチェーンシステムにおける匿名トークン付与に関する一考察2019
- Author(s)
  佐藤哲平，江村恵太，面和成
- Organizer
  コンピュータセキュリティシンポジウム
- Data Source
  KAKENHI-PROJECT-19H04107
[Presentation] 標準的な仮定で安全かつスケーラブルなメンバ削除可能グループ署名2018
- Author(s)
  江村恵太
- Organizer
  暗号と情報セキュリティシンポジウム (SCIS) 2018
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] Fully Anonymous Group Signature with Verifier-Local Revocation2018
- Author(s)
  Ai Ishida, Yusuke Sakai, Keita Emura, Goichiro Hanaoka, Keisuke Tanaka
- Organizer
  SCN 2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26280046
[Presentation] A Revocable Group Signature Scheme with Scalability from Simple Assumptions and Its Implementation2018
- Author(s)
  Keita Emura, Takuya Hayashi
- Organizer
  ISC 2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] New Revocable IBE in Prime-Order Groups: Adaptively Secure, Decryption Key Exposure Resistant, and with Short Public Parameters2017
- Author(s)
  Yohei Watanabe, Keita Emura, Jae Hong Seo
- Organizer
  CT-RSA 2017
- Place of Presentation
  Moscone Center, San Francisco, USA
- Year and Date
  2017-02-14
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] Group Signatures with Time-bound Keys Revisited: A New Model and an Efficient Construction2017
- Author(s)
  Keita Emura, Takuya Hayashi, Ai Ishida
- Organizer
  AsiaCCS 2017
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] Generic Constructions for Fully Secure Revocable Attribute-Based Encryption2017
- Author(s)
  Kotoko Yamada, Nuttapong Attrapadung, Keita Emura, Goichiro Hanaoka, Keisuke Tanaka
- Organizer
  ESORICS 2017
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] 適応的安全な無効化可能属性ベース暗号の一般的構成2017
- Author(s)
  山田古都子, アッタラパドゥン・ナッタポン, 江村恵太, 花岡悟一郎, 田中圭介
- Organizer
  暗号と情報セキュリティシンポジウム2017
- Place of Presentation
  ロワジールホテル那覇, 沖縄県, 那覇市
- Year and Date
  2017-01-24
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] 署名鍵有効期限付きグループ署名の効率化とその実装評価2017
- Author(s)
  江村恵太, 林卓也, 石田愛
- Organizer
  暗号と情報セキュリティシンポジウム2017
- Place of Presentation
  ロワジールホテル那覇, 沖縄県, 那覇市
- Year and Date
  2017-01-24
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] 素数位数群における効率的な鍵失効機能付きIDベース暗号の構成法2016
- Author(s)
  渡邉洋平, 江村恵太
- Organizer
  コンピュータセキュリティシンポジウム2016
- Place of Presentation
  秋田キャッスルホテル, 秋田県, 秋田市
- Year and Date
  2016-10-11
- Data Source
  KAKENHI-PROJECT-16K00198
[Presentation] Chosen Ciphertext Secure Keyed-Homomorphic Public-Key Encryption2013
- Author(s)
  Keita Emura, Goichiro Hanaoka, Go Ohtake, Takahiro Matsuda, Shota Yamada
- Organizer
  Public Key Cryptography 2013
- Place of Presentation
  Nara Prefectural New Public Hall, Nara, Japan
- Data Source
  KAKENHI-PROJECT-24700009
[Presentation] 鍵付き準同型IDベース暗号
- Author(s)
  江村恵太, 花岡悟一郎, 松田隆弘, 縫田光司, 山田翔太
- Organizer
  暗号と情報セキュリティシンポジウム (SCIS) 2015
- Place of Presentation
  福岡県北九州市小倉リーガロイヤルホテル小倉
- Year and Date
  2015-01-20 – 2015-01-23
- Data Source
  KAKENHI-PROJECT-24700009

1. Hanaoka Goichiro (30415731)

# of Collaborated Projects: 2 results

# of Collaborated Products: 3 results
2. Omote Kazumasa (50417507)

# of Collaborated Projects: 2 results

# of Collaborated Products: 10 results
3. Attrapadun Nutt (40515300)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
4. 松田隆宏 (60709492)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
5. 吉岡克成 (60415841)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
6. 縫田光司 (20435762)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. 吉田真紀 (50335387)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. 松尾真一郎 (20553960)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. 林卓也 (70739995)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
10. ATTRAPADUNG Nuttapong

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results
11. 坂井祐介

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
12. 渡邉洋平

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Emura Keita 江村 恵太

Research Projects

Research Products

Co-Researchers

サイバー攻撃対策と暗号理論で支えられるスマートコントラクト利用型自動監視技術

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

データの利活用を促進するセキュアシステムの証明可能安全性に関する研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Autonomous Decentralized Surveillance Technology with High Reliability Based on Blockchain

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Research on Advanced Key Update Technique for Practical Applications of Advanced CryptosystemPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Research on Cryptographic Primitives with Easily Verifiable Security

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

A cryptographic scheme maintaining security for cloud environmentsPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] A Generic Construction of CCA-Secure Identity-Based Encryption with Equality Test against Insider Attacks2023

Author(s)

Journal Title

DOI

ISSN

Year and Date

Language

Data Source

[Journal Article] Identity-Based Encryption with Security against the KGC: A Formal Model and Its Instantiations2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] An Anonymous Trust-Marking Scheme on Blockchain Systems2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] A Revocable Group Signature Scheme with Scalability from Simple Assumptions2020

Author(s)

Journal Title

DOI

NAID

ISSN

Year and Date

Language

Data Source

[Journal Article] Group Signatures with Message-Dependent Opening: Formal Definitions and Constructions2019

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] Generic Constructions for Fully Secure Revocable Attribute-Based Encryption2018

Author(s)

Journal Title

DOI

NAID

ISSN

Year and Date

Emura Keita 江村恵太