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Eiichiro Fujisaki

dblp:07/7039 · DBLP profile ↗
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23ranked-venue papers
12as first author
3since 2021 · last 2025
—ORCID · none

Domains — the database's venue-derived domains; a paper can count in several

Security and privacy · 23 · 12 first-author · 3 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Network and information security
13 papers
Cryptographic primitives and cryptanalysis · 79% Cryptographic protocols and secure computation · 21%

Topics — the 18 heaviest of 19, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Cryptographic primitives and cryptanalysis › public-key cryptography
public-key encryption
1.052018
All-But-Many Encryption · J. Cryptol. 2018
Public-Key Cryptosystems Resilient to Continuous Tampering and Leakage of Arbitrary Functions · ASIACRYPT (1) 2016
All-But-Many Encryption - A New Framework for Fully-Equipped UC Commitments · ASIACRYPT (2) 2014
Cryptographic primitives and cryptanalysis › public-key cryptography › digital signatures
blind signatures
0.922025
On the Limits of Non-interactive Blind Signatures · ASIACRYPT (8) 2025
How to Date Blind Signatures · ASIACRYPT 1996
Cryptographic primitives and cryptanalysis
leakage-resilient cryptography
0.212016
Public-Key Cryptosystems Resilient to Continuous Tampering and Leakage of Arbitrary Functions · ASIACRYPT (1) 2016
Cryptographic protocols and secure computation › commitment schemes
universally composable commitment
0.212014
All-But-Many Encryption - A New Framework for Fully-Equipped UC Commitments · ASIACRYPT (2) 2014
Cryptographic protocols and secure computation › composable security
universally composable security
0.212014
All-But-Many Encryption - A New Framework for Fully-Equipped UC Commitments · ASIACRYPT (2) 2014
Cryptographic primitives and cryptanalysis › public-key cryptography › public-key encryption
hybrid encryption
0.222013
Secure Integration of Asymmetric and Symmetric Encryption Schemes · J. Cryptol. 2013
Secure Integration of Asymmetric and Symmetric Encryption Schemes · CRYPTO 1999
Cryptographic protocols and secure computation
key exchange
0.212013
Secure Integration of Asymmetric and Symmetric Encryption Schemes · J. Cryptol. 2013
Cryptographic primitives and cryptanalysis › public-key cryptography › public-key encryption
OAEP
0.122004
RSA-OAEP Is Secure under the RSA Assumption · J. Cryptol. 2004
RSA-OAEP Is Secure under the RSA Assumption · CRYPTO 2001
Cryptographic primitives and cryptanalysis
encryption
0.122001
RSA-OAEP Is Secure under the RSA Assumption · CRYPTO 2001
Secure Integration of Asymmetric and Symmetric Encryption Schemes · CRYPTO 1999
Cryptographic protocols and secure computation
commitment schemes
0.012002
A Statistically-Hiding Integer Commitment Scheme Based on Groups with Hidden Order · ASIACRYPT 2002
Cryptographic primitives and cryptanalysis › public-key cryptography
digital signatures
0.021996
How to Date Blind Signatures · ASIACRYPT 1996
An Efficient Digital Signature Scheme Based on an Elliptic Curve Over the Ring Zn · CRYPTO 1992
Cryptographic protocols and secure computation › secret sharing › verifiable secret sharing
publicly verifiable secret sharing
0.011998
A Practical and Provably Secure Scheme for Publicly Verifiable Secret Sharing and Its Applications · EUROCRYPT 1998
Cryptographic protocols and secure computation
secret sharing
0.011998
A Practical and Provably Secure Scheme for Publicly Verifiable Secret Sharing and Its Applications · EUROCRYPT 1998
Cryptographic protocols and secure computation › proof systems › zero-knowledge proofs
statistical zero-knowledge
0.011997
Statistical Zero Knowledge Protocols to Prove Modular Polynomial Relations · CRYPTO 1997
Cryptographic protocols and secure computation › proof systems
zero-knowledge proofs
0.011997
Statistical Zero Knowledge Protocols to Prove Modular Polynomial Relations · CRYPTO 1997
Cryptographic primitives and cryptanalysis › cryptographic assumptions
groups of unknown order
0.012002
A Statistically-Hiding Integer Commitment Scheme Based on Groups with Hidden Order · ASIACRYPT 2002
Cryptographic primitives and cryptanalysis
cryptographic assumptions
0.012001
RSA-OAEP Is Secure under the RSA Assumption · CRYPTO 2001
Cryptographic primitives and cryptanalysis › cryptographic assumptions
RSA assumption
0.012001
RSA-OAEP Is Secure under the RSA Assumption · CRYPTO 2001

Methods — techniques the papers use, named apart from their topics

tag-based encryption · 0.3lossy encryption · 0.3chosen-ciphertext security · 0.2KEM/DEM · 0.2random oracle model · 0.0RSA assumption · 0.0
YearPublicationVenuePosition
2025 On the Limits of Non-interactive Blind Signatures
Kazuki Yamamura, Tetsuya Okuda, Eiichiro Fujisaki, Masayuki Abe
ASIACRYPT (8)3
2025 On Non-Interactive Blind Signatures in the Plain Model Using Complexity Leveraging
Kazuki Yamamura, Tetsuya Okuda, Eiichiro Fujisaki
FC (2)3
2023 Improved lattice enumeration algorithms by primal and dual reordering methods
abstract
Abstract The security of lattice‐based cryptosystems is generally based on the hardness of the Shortest Vector Problem (SVP). The original enumeration (ENUM) algorithm solving SVP runs in exponential time due to the exhaustive search, which is used as a subroutine for the block Korkin–Zolotarev (BKZ) algorithm. It is a critical issue to reduce the computational complexity of ENUM. In this paper, first, we improve the reordering method proposed by Wang et al. in ACISP 2018. We call our proposed method DPR, which permutates the projected dual lattice vectors by decreasing norms. Preliminary experimental results show that the proposed reordering methods can reduce the ENUM complexity compared to the predecessor; for instance, DPR reduces around 32.8% on average in 45‐dimensional lattices. Moreover, the authors’ simulation shows that the higher the lattice dimension, the more DPR can reduce the ENUM complexity. In addition, we study a condition for deciding when the reordering method shall be executed or not. Finally, we improve the BKZ algorithm with DPR methods and the proposed condition.
Kazuki Yamamura, Yuntao Wang 0002, Eiichiro Fujisaki
IET Inf. Secur.3
2018 All-But-Many Encryption
Eiichiro Fujisaki
J. Cryptol.1
2017 A Constant-Size Signature Scheme with Tighter Reduction from CDH Assumption
Kaisei Kajita, Kazuto Ogawa, Eiichiro Fujisaki
ISC3
2016 Public-Key Cryptosystems Resilient to Continuous Tampering and Leakage of Arbitrary Functions
Eiichiro Fujisaki, Keita Xagawa
ASIACRYPT (1)1
2014 All-But-Many Encryption - A New Framework for Fully-Equipped UC Commitments
Eiichiro Fujisaki
ASIACRYPT (2)1
2013 Secure Integration of Asymmetric and Symmetric Encryption Schemes
Eiichiro Fujisaki, Tatsuaki Okamoto
J. Cryptol.1
2012 New Constructions of Efficient Simulation-Sound Commitments Using Encryption and Their Applications
Eiichiro Fujisaki
CT-RSA1
2011 Sub-linear Size Traceable Ring Signatures without Random Oracles
Eiichiro Fujisaki
CT-RSA1
2010 A Multi-trapdoor Commitment Scheme from the RSA Assumption
Ryo Nishimaki, Eiichiro Fujisaki, Keisuke Tanaka
ACISP2
2009 On the Insecurity of the Fiat-Shamir Signatures with Iterative Hash Functions
Eiichiro Fujisaki, Ryo Nishimaki, Keisuke Tanaka
ProvSec1
2009 Efficient Non-interactive Universally Composable String-Commitment Schemes
Ryo Nishimaki, Eiichiro Fujisaki, Keisuke Tanaka
ProvSec2
2007 Formal Security Treatments for Signatures from Identity-Based Encryption
Yang Cui 0001, Eiichiro Fujisaki, Goichiro Hanaoka, Hideki Imai, Rui Zhang 0002
ProvSec2
2006 Forward-Secure Authenticated-Encryption in Multi-Receiver Setting
Kan Yasuda, Kazumaro Aoki, Eiichiro Fujisaki, Atsushi Fujioka
SECRYPT3
2004 RSA-OAEP Is Secure under the RSA Assumption
Eiichiro Fujisaki, Tatsuaki Okamoto, David Pointcheval, Jacques Stern
J. Cryptol.1
2002 A Statistically-Hiding Integer Commitment Scheme Based on Groups with Hidden Order
Ivan Damgård, Eiichiro Fujisaki
ASIACRYPT2
2001 RSA-OAEP Is Secure under the RSA Assumption
Eiichiro Fujisaki, Tatsuaki Okamoto, David Pointcheval, Jacques Stern
CRYPTO1
1999 Secure Integration of Asymmetric and Symmetric Encryption Schemes
Eiichiro Fujisaki, Tatsuaki Okamoto
CRYPTO1
1998 A Practical and Provably Secure Scheme for Publicly Verifiable Secret Sharing and Its Applications
Eiichiro Fujisaki, Tatsuaki Okamoto
EUROCRYPT1
1997 Statistical Zero Knowledge Protocols to Prove Modular Polynomial Relations
Eiichiro Fujisaki, Tatsuaki Okamoto
CRYPTO1
1996 How to Date Blind Signatures
Masayuki Abe, Eiichiro Fujisaki
ASIACRYPT2
1992 An Efficient Digital Signature Scheme Based on an Elliptic Curve Over the Ring Zn
Tatsuaki Okamoto, Atsushi Fujioka, Eiichiro Fujisaki
CRYPTO3