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IEICE Trans

Yusuke SAKAI

More Efficient Two-Round Multi-Signature Scheme with Provably Secure Parameters for Standardized Elliptic Curves
Kaoru TAKEMURE Yusuke SAKAI Bagus SANTOSO Goichiro HANAOKA Kazuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2024/07/01
Vol. E107-A  No. 7  pp. 966-988
Type of Manuscript:  PAPER
Category: Cryptography and Information Security
Keyword: 
multi-signatures, decisional Diffie-Hellman problem, concrete security, tight security, 
 Summary | Full Text:PDF
Constraints and Evaluations on Signature Transmission Interval for Aggregate Signatures with Interactive Tracing Functionality
Ryu ISHII Kyosuke YAMASHITA Zihao SONG Yusuke SAKAI Tadanori TERUYA Takahiro MATSUDA Goichiro HANAOKA Kanta MATSUURA Tsutomu MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2024/04/01
Vol. E107-A  No. 4  pp. 619-633
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication Technologies for Safe and Secure Life)
Category: 
Keyword: 
sensor networks, aggregate signature, 
 Summary | Full Text:PDF
Fault-Tolerant Aggregate Signature Schemes against Bandwidth Consumption Attack
Kyosuke YAMASHITA Ryu ISHII Yusuke SAKAI Tadanori TERUYA Takahiro MATSUDA Goichiro HANAOKA Kanta MATSUURA Tsutomu MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2023/09/01
Vol. E106-A  No. 9  pp. 1177-1188
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: Cryptography and Information Security
Keyword: 
sensor networks, aggregate signature schemes, fault-tolerant aggregate signature schemes, dynamic traitor tracing, 
 Summary | Full Text:PDF
Aggregate Signature Schemes with Traceability of Devices Dynamically Generating Invalid Signatures
Ryu ISHII Kyosuke YAMASHITA Yusuke SAKAI Tadanori TERUYA Takahiro MATSUDA Goichiro HANAOKA Kanta MATSUURA Tsutomu MATSUMOTO 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2022/11/01
Vol. E105-D  No. 11  pp. 1845-1856
Type of Manuscript:  Special Section PAPER (Special Section on Next-generation Security Applications and Practice)
Category: 
Keyword: 
sensor networks, aggregate signature schemes, fault-tolerant aggregate signature schemes, dynamic traitor tracing, 
 Summary | Full Text:PDF
Achieving Pairing-Free Aggregate Signatures using Pre-Communication between Signers
Kaoru TAKEMURE Yusuke SAKAI Bagus SANTOSO Goichiro HANAOKA Kazuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2021/09/01
Vol. E104-A  No. 9  pp. 1188-1205
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: Cryptography and Information Security
Keyword: 
aggregate signatures, pre-communication, knowledge of secret key model, rogue-key attack, 
 Summary | Full Text:PDF
Equivalence between Non-Malleability against Replayable CCA and Other RCCA-Security Notions
Junichiro HAYATA Fuyuki KITAGAWA Yusuke SAKAI Goichiro HANAOKA Kanta MATSUURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2021/01/01
Vol. E104-A  No. 1  pp. 89-103
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
public-key encryption, non-malleability, replayable chosen ciphertext security, 
 Summary | Full Text:PDF
Generic Construction of Adaptively Secure Anonymous Key-Policy Attribute-Based Encryption from Public-Key Searchable Encryption
Junichiro HAYATA Masahito ISHIZAKA Yusuke SAKAI Goichiro HANAOKA Kanta MATSUURA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2020/01/01
Vol. E103-A  No. 1  pp. 107-113
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
public-key searchable encryption, attribute-based encryption, 
 Summary | Full Text:PDF
Verifiable Privacy-Preserving Data Aggregation Protocols
Satoshi YASUDA Yoshihiro KOSEKI Yusuke SAKAI Fuyuki KITAGAWA Yutaka KAWAI Goichiro HANAOKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2020/01/01
Vol. E103-A  No. 1  pp. 183-194
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
homomorphic encryption, verifiable homomorphic encryption, SXDH, 
 Summary | Full Text:PDF
Practical Public-Key Encryption Scheme Tightly Secure in the Random Oracle Model
Yusuke SAKAI Goichiro HANAOKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2020/01/01
Vol. E103-A  No. 1  pp. 165-172
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
public-key encryption, chosen-ciphertext security, tight security, 
 Summary | Full Text:PDF
A Setup-Free Threshold Encryption Scheme for the Bitcoin Protocol and Its Applications
Goichiro HANAOKA Yusuke SAKAI Toshiya SHIMIZU Takeshi SHIMOYAMA SeongHan SHIN 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2020/01/01
Vol. E103-A  No. 1  pp. 150-164
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: 
Keyword: 
threshold encryption, ECDSA, Bitcoin, provable security, implementation, 
 Summary | Full Text:PDF
Shortening the Libert-Peters-Yung Revocable Group Signature Scheme by Using the Random Oracle Methodology
Kazuma OHARA Keita EMURA Goichiro HANAOKA Ai ISHIDA Kazuo OHTA Yusuke SAKAI 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2019/09/01
Vol. E102-A  No. 9  pp. 1101-1117
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: Cryptography and Information Security
Keyword: 
group signature, revocation, scalability, 
 Summary | Full Text:PDF
Tag-KEM/DEM Framework for Public-Key Encryption with Non-Interactive Opening
Yusuke SAKAI Takahiro MATSUDA Goichiro HANAOKA 
Publication:   IEICE TRANSACTIONS on Information and Systems
Publication Date: 2018/11/01
Vol. E101-D  No. 11  pp. 2677-2687
Type of Manuscript:  Special Section PAPER (Special Section on Information and Communication System Security)
Category: Cryptographic Techniques
Keyword: 
Public-key encryption with non-interactive opening, Tag-KEM, 
 Summary | Full Text:PDF
Group Signature with Deniability: How to Disavow a Signature
Ai ISHIDA Keita EMURA Goichiro HANAOKA Yusuke SAKAI Keisuke TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2017/09/01
Vol. E100-A  No. 9  pp. 1825-1837
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
group signature, deniability, non-interactive zero-knowledge proof, bilinear map, 
 Summary | Full Text:PDF
Disavowable Public Key Encryption with Non-Interactive Opening
Ai ISHIDA Keita EMURA Goichiro HANAOKA Yusuke SAKAI Keisuke TANAKA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2015/12/01
Vol. E98-A  No. 12  pp. 2446-2455
Type of Manuscript:  Special Section PAPER (Special Section on Information Theory and Its Applications)
Category: Cryptography and Information Security
Keyword: 
public key encryption with non-interactive opening, disavowability, non-interactive zero-knowledge proof, 
 Summary | Full Text:PDF
Methods for Restricting Message Space in Public-Key Encryption
Yusuke SAKAI Keita EMURA Goichiro HANAOKA Yutaka KAWAI Kazumasa OMOTE 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/06/01
Vol. E96-A  No. 6  pp. 1156-1168
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
public-key encryption, abuse detection, format checking, 
 Summary | Full Text:PDF
Ciphertext-Policy Delegatable Hidden Vector Encryption and Its Application
Mitsuhiro HATTORI Takato HIRANO Takashi ITO Nori MATSUDA Takumi MORI Yusuke SAKAI Kazuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2013/01/01
Vol. E96-A  No. 1  pp. 53-67
Type of Manuscript:  Special Section PAPER (Special Section on Cryptography and Information Security)
Category: Public Key Based Protocols
Keyword: 
hidden vector encryption, searchable encryption, pairing-based cryptography, 
 Summary | Full Text:PDF
How to Shorten a Ciphertext of Reproducible Key Encapsulation Mechanisms in the Random Oracle Model
Yusuke SAKAI Goichiro HANAOKA Kaoru KUROSAWA Kazuo OHTA 
Publication:   IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2011/06/01
Vol. E94-A  No. 6  pp. 1293-1305
Type of Manuscript:  Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: 
Keyword: 
public key encryption, chosen-ciphertext security, key encapsulation mechanism, 
 Summary | Full Text:PDF