Goichiro Hanaoka

Jacob C. N. Schuldt, Goichiro Hanaoka, Shinsaku Kiyomoto, 2019, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences.

Orthogonality between Key Privacy and Data Privacy, Revisited

Hideki Imai, Rui Zhang, Goichiro Hanaoka, 2007, Inscrypt.

More Constructions of Re-splittable Threshold Public Key Encryption

Goichiro Hanaoka, Takahiro Matsuda, Kanta Matsuura, 2014, IWSEC.

Facial Caricature by Computer Based on the Style of Individual Human Caricaturist

Masahide Kaneko, Goichiro Hanaoka, Hiroshi Harashima, 1997 .

Disavowable Public Key Encryption with Non-interactive Opening

Keita Emura, Goichiro Hanaoka, Keisuke Tanaka, 2015, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Unconditionally secure key insulated cryptosystems

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2002 .

Information-theoretically secure key insulated encryption

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2004 .

On the Hierarchical Structure of Trusted Authority for Unconditionally Secure Cryptography

Hideki Imai, Goichiro Hanaoka, Yohei Shibuya, 2000 .

An Unconditionally Secure Electronic Cash Scheme with Computational Untraceability

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2002, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

The Role of Arbiters for Unconditionally Secure Authentication

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2004 .

On Evaluating the Entropy of Graphical Passwords

Hideki Imai, Goichiro Hanaoka, Masato Akao, 2003 .

A New Key-Insulated Public Key Encryption Scheme with Auxiliary Helper Key

Hideki Imai, Goichiro Hanaoka, Kanta Matsuura, 2006 .

Traceability Schemes against Illegal Distribution of Signed Documents

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2004 .

Unconditionally Secure Chaffing-and-Winnowing

Hideki Imai, Goichiro Hanaoka, Manabu Hagiwara, 2005 .

CCA-secure IBE Scheme with Tight Security Reduction based on the Gap BDH Assumption

Hideki Imai, Jun Furukawa, Goichiro Hanaoka, 2005 .

ID-based Encryption for Directed Acyclic Graph Hierarchies : Unification of Key-evolving Encryption Primitives (Extended Abstract)

Kazukuni Kobara, Hideki Imai, Goichiro Hanaoka, 2004 .

Towards Security Enhancement with Efficient Reduction for Identity Based Encryption

Hideki Imai, Goichiro Hanaoka, Rui Zhang, 2005 .

A-7-1 On the Plaintext Awareness of ECIES

Hideki Imai, Goichiro Hanaoka, Takahiro Matsuda, 2013 .

Security Tightness Evaluation of Fujisaki-Okamoto Conversion in Identity Based Encryption

Rui Zhang, Hideki Imai, Goichiro Hanaoka, 2006 .

The MAC-based Construction of Strong Multiple Encryption

Kazukuni Kobara, Hideki Imai, Goichiro Hanaoka, 2005 .

Partially Wildcarded Ciphertext-Policy Attribute-Based Encryption and Its Performance Evaluation

Hideki Imai, Goichiro Hanaoka, Takashi Yamakawa, 2017, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Generic Construction of Adaptively Secure Anonymous Key-Policy Attribute-Based Encryption from Public-Key Searchable Encryption

Yusuke Sakai, Kanta Matsuura, Junichiro Hayata, 2018, 2018 International Symposium on Information Theory and Its Applications (ISITA).

Aggregate Signature with Traceability of Devices Dynamically Generating Invalid Signatures

Goichiro Hanaoka, Takahiro Matsuda, Kanta Matsuura, 2021, ACNS Workshops.

Oblivious Linear Group Actions and Applications

Jacob C. N. Schuldt, Goichiro Hanaoka, Takahiro Matsuda, 2021, CCS.

Semantic Definition of Anonymity in Identity-Based Encryption and Its Relation to Indistinguishability-Based Definition

Yusuke Sakai, Goichiro Hanaoka, Shota Yamada, 2020, ESORICS.

Equivalence Between Non-malleability Against Replayable CCA and Other RCCA-Security Notions

Yusuke Sakai, Goichiro Hanaoka, Fuyuki Kitagawa, 2019, IWSEC.

Simulation-Based Receiver Selective Opening CCA Secure PKE from Standard Computational Assumptions

Goichiro Hanaoka, Fuyuki Kitagawa, Keisuke Tanaka, 2018, SCN.

Constructing and Understanding Chosen Ciphertext Security via Puncturable Key Encapsulation Mechanisms

Goichiro Hanaoka, Takahiro Matsuda, Goichiro Hanaoka, 2015, TCC.

Privacy-preserving search for chemical compound databases

Goichiro Hanaoka, Kiyoshi Asai, Kana Shimizu, 2015, BMC Bioinformatics.

Chosen Ciphertext Security via Point Obfuscation

Goichiro Hanaoka, Takahiro Matsuda, Goichiro Hanaoka, 2014, TCC.

Tree-Structured Composition of Homomorphic Encryption: How to Weaken Underlying Assumptions

Koji Nuida, Goichiro Hanaoka, Takahiro Matsuda, 2014, IACR Cryptol. ePrint Arch..

Generic Constructions of Parallel Key-Insulated Encryption: Stronger Security Model and Novel Schemes

Jian Weng, Goichiro Hanaoka, Goichiro Hanaoka, 2010, IACR Cryptol. ePrint Arch..

Reducing the Ciphertext Size of Dolev-Dwork-Naor like Public Key Cryptosystems

Hideki Imai, Goichiro Hanaoka, Anderson C. A. Nascimento, 2010, IACR Cryptol. ePrint Arch..

CCA-Secure Public Key Encryption without Group-Dependent Hash Functions

Hideki Imai, Goichiro Hanaoka, Yang Cui, 2009, IEICE Trans. Inf. Syst..

Formal Security Treatments for IBE-to-Signature Transformation: Relations among Security Notions

Hideki Imai, Goichiro Hanaoka, Yang Cui, 2009, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Efficient Chosen Ciphertext Secure Public Key Encryption under the Computational Diffie-Hellman Assumption

Kaoru Kurosawa, Goichiro Hanaoka, Goichiro Hanaoka, 2008, IACR Cryptol. ePrint Arch..

Bounded CCA2-Secure Encryption

Abhi Shelat, Hideki Imai, Ronald Cramer, 2007, ASIACRYPT.

Digitally signed document sanitizing scheme based on bilinear maps

Hideki Imai, Kunihiko Miyazaki, Goichiro Hanaoka, 2006, ASIACCS '06.

A Generic Construction of CCA-Secure Cryptosystems without NIZKP for a Bounded Number of Decryption Queries

Hideki Imai, Goichiro Hanaoka, Goichiro Hanaoka, 2006, IACR Cryptol. ePrint Arch..

Unconditionally secure signatures and its related schemes

Goichiro Hanaoka, Goichiro Hanaoka, 2005, IEEE Information Theory Workshop on Theory and Practice in Information-Theoretic Security, 2005..

Relations Among Notions of Security for Identity Based Encryption Schemes

Yang Cui, Goichiro Hanaoka, Hideki Imai, 2005, LATIN.

On the Security of Cryptosystems with All-or-Nothing Transform

Hideki Imai, Rui Zhang, Goichiro Hanaoka, 2004, ACNS.

Unconditionally secure authenticated encryption

Junji Shikata, Hideki Imai, Tsutomu Matsumoto, 2004 .

On the Security of Multiple Encryption or CCA-security+CCA-security=CCA-security?

Junji Shikata, Hideki Imai, Rui Zhang, 2004, Public Key Cryptography.

A Taxonomy of Secure Two-Party Comparison Protocols and Efficient Constructions

Jacob C. N. Schuldt, Goichiro Hanaoka, Shinsaku Kiyomoto, 2017, 2017 15th Annual Conference on Privacy, Security and Trust (PST).

Fail-Stop Signatures for Multiple-Signers: Definitions, Constructions, and Their Extensions

Naoto Yanai, Goichiro Hanaoka, Takashi Nishide, 2016, J. Inf. Process..

Constructions of Fail-Stop Signatures for Multi-signer Setting

Naoto Yanai, Goichiro Hanaoka, Takashi Nishide, 2015, 2015 10th Asia Joint Conference on Information Security.

Time-Specific Encryption from Forward-Secure Encryption

Hideki Imai, Keita Emura, Goichiro Hanaoka, 2012, SCN.

Solving a Discrete Logarithm Problem with Auxiliary Input on a 160-Bit Elliptic Curve

Masaya Yasuda, Goichiro Hanaoka, Yumi Sakemi, 2012, Public Key Cryptography.

Model Inversion Attacks for Online Prediction Systems: Without Knowledge of Non-Sensitive Attributes

Goichiro Hanaoka, Seira Hidano, Shinsaku Kiyomoto, 2018, IEICE Trans. Inf. Syst..

Attribute-Based Encryption for Range Attributes

Goichiro Hanaoka, Hajime Watanabe, Kazuto Ogawa, 2016, SCN.

Generic Constructions for Chosen-Ciphertext Secure Attribute Based Encryption

Goichiro Hanaoka, Nuttapong Attrapadung, Noboru Kunihiro, 2011, Public Key Cryptography.

On Private Information Retrieval Supporting Range Queries

Jacob C. N. Schuldt, Goichiro Hanaoka, Kanta Matsuura, 2020, ESORICS.

Traceability Schemes for Signed Documents

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2002, ISC.

Disavowable Public Key Encryption with Non-interactive Opening

Yusuke Sakai, Keita Emura, Goichiro Hanaoka, 2015, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Conversions Among Several Classes of Predicate Encryption and Applications to ABE with Various Compactness Tradeoffs

Goichiro Hanaoka, Nuttapong Attrapadung, Shota Yamada, 2015, International Conference on the Theory and Application of Cryptology and Information Security.

Chosen ciphertext secure keyed-homomorphic public-key cryptosystems

Koji Nuida, Keita Emura, Goichiro Hanaoka, 2018, Des. Codes Cryptogr..

Chosen Ciphertext Secure Keyed-Homomorphic Public-Key Encryption

Keita Emura, Goichiro Hanaoka, Takahiro Matsuda, 2013, Public Key Cryptography.

A Remark on an Identity-Based Encryption Scheme with Non-interactive Opening

Yusuke Sakai, Goichiro Hanaoka, Goichiro Hanaoka, 2018, 2018 International Symposium on Information Theory and Its Applications (ISITA).

Identity-Based Hierarchical Strongly Key-Insulated Encryption and Its Application

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2005, ASIACRYPT.

Identity-Based Encryption with Non-Interactive Key Update

Junji Shikata, Hideki Imai, Goichiro Hanaoka, 2004 .

An Efficient Hierarchical Identity-Based Key-Sharing Method Resistant against Collusion-Attacks

Hideki Imai, Goichiro Hanaoka, Yuliang Zheng, 1999, ASIACRYPT.

Trading Plaintext-Awareness for Simulatability to Achieve Chosen Ciphertext Security

Goichiro Hanaoka, Takahiro Matsuda, Goichiro Hanaoka, 2016, Public Key Cryptography.

Fuzzy Signatures: Relaxing Requirements and a New Construction

Goichiro Hanaoka, Takahiro Matsuda, Kenta Takahashi, 2016, ACNS.

Signature schemes with a fuzzy private key

Takao Murakami, Goichiro Hanaoka, M. Nishigaki, 2019, International Journal of Information Security.

Attribute-Based Signatures for Unbounded Languages from Standard Assumptions

Yusuke Sakai, Goichiro Hanaoka, Nuttapong Attrapadung, 2018, IACR Cryptol. ePrint Arch..

Memory Lower Bounds of Reductions Revisited

Goichiro Hanaoka, Keisuke Tanaka, Takahiro Matsuda, 2018, IACR Cryptol. ePrint Arch..

Practical attribute-based signature schemes for circuits from bilinear map

Yusuke Sakai, Goichiro Hanaoka, Nuttapong Attrapadung, 2017, IET Inf. Secur..

On signatures with tight security in the multi-user setting

Jacob C. N. Schuldt, Goichiro Hanaoka, Goichiro Hanaoka, 2016, 2016 International Symposium on Information Theory and Its Applications (ISITA).

Time-specific encryption from forward-secure encryption: generic and direct constructions

Goichiro Hanaoka, H. Imai, K. Emura, 2016, International Journal of Information Security.

Convertible Nominative Signatures from Standard Assumptions without Random Oracles

Jacob C. N. Schuldt, Goichiro Hanaoka, Goichiro Hanaoka, 2016, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Attribute-Based Signatures for Circuits from Bilinear Map

Yusuke Sakai, Goichiro Hanaoka, Nuttapong Attrapadung, 2016, Public Key Cryptography.

A Framework for Identity-Based Encryption with Almost Tight Security

Goichiro Hanaoka, Nuttapong Attrapadung, Shota Yamada, 2015, ASIACRYPT.

A Signature Scheme with a Fuzzy Private Key

Masakatsu Nishigaki, Goichiro Hanaoka, Takahiro Matsuda, 2015, ACNS.

New Security Proof for the Boneh-Boyen IBE: Tight Reduction in Unbounded Multi-challenge Security

Goichiro Hanaoka, Nuttapong Attrapadung, Shota Yamada, 2014, ICICS.

A Privacy-Enhanced Access Log Management Mechanism in SSO Systems from Nominative Signatures

Akihisa Kodate, Yusuke Sakai, Keita Emura, 2014, 2014 IEEE 13th International Conference on Trust, Security and Privacy in Computing and Communications.

Self-Bilinear Map on Unknown Order Groups from Indistinguishability Obfuscation and Its Applications

Goichiro Hanaoka, Takashi Yamakawa, Noboru Kunihiro, 2014, Algorithmica.

Weakened Anonymity of Group Signature and Its Application to Subscription Services

Goichiro Hanaoka, Kazuto Ogawa, Go Ohtake, 2014, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

On the Impossibility of Constructing Efficient Key Encapsulation and Programmable Hash Functions in Prime Order Groups

Jacob C. N. Schuldt, Goichiro Hanaoka, Takahiro Matsuda, 2012, CRYPTO.

Space Efficient Signature Schemes from the RSA Assumption

Goichiro Hanaoka, Noboru Kunihiro, Shota Yamada, 2012, Public Key Cryptography.

Verifiable Predicate Encryption and Applications to CCA Security and Anonymous Predicate Authentication

Bagus Santoso, Jacob C. N. Schuldt, Goichiro Hanaoka, 2012, Public Key Cryptography.

Two-Dimensional Representation of Cover Free Families and Its Applications: Short Signatures and More

Goichiro Hanaoka, Noboru Kunihiro, Shota Yamada, 2012, CT-RSA.

Non-transferable User Certification Secure against Authority Information Leaks and Impersonation Attacks

Jacob C. N. Schuldt, Goichiro Hanaoka, Goichiro Hanaoka, 2011, ACNS.

Between Hashed DH and Computational DH: Compact Encryption from Weaker Assumption

Kaoru Kurosawa, Goichiro Hanaoka, Goichiro Hanaoka, 2010, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

On the Theoretical Gap between Group Signatures with and without Unlinkability

Goichiro Hanaoka, Kazuto Ogawa, Go Ohtake, 2009, AFRICACRYPT.

An Efficient Encapsulation Scheme from Near Collision Resistant Pseudorandom Generators and Its Application to IBE-to-PKE Transformations

Hideki Imai, Goichiro Hanaoka, Takahiro Matsuda, 2009, CT-RSA.

Simple CCA-Secure Public Key Encryption from Any Non-Malleable Identity-Based Encryption

Hideki Imai, Goichiro Hanaoka, Takahiro Matsuda, 2009, ICISC.

A generic construction of useful client puzzles

Hideki Imai, Rui Zhang, Goichiro Hanaoka, 2009, ASIACCS '09.

Chosen Ciphertext Secure Public Key Encryption with a Simple Structure

Hideki Imai, Goichiro Hanaoka, Hajime Watanabe, 2008, IWSEC.

A Strongly Unforgeable Signature under the CDH Assumption without Collision Resistant Hash Functions

Hideki Imai, Goichiro Hanaoka, Takahiro Matsuda, 2008, IEICE Trans. Inf. Syst..

A CDH-Based Strongly Unforgeable Signature Without Collision Resistant Hash Function

Hideki Imai, Goichiro Hanaoka, Takahiro Matsuda, 2007, ProvSec.

Formal Security Treatments for Signatures from Identity-Based Encryption

Hideki Imai, Rui Zhang, Goichiro Hanaoka, 2007, ProvSec.

Efficient Identity-Based Encryption with Tight Security Reduction

Goichiro Hanaoka, Hideki Imai, Nuttapong Attrapadung, 2006, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Generic Transforms to Acquire CCA-Security for Identity Based Encryption: The Cases of FOpkc and REACT

Hideki Imai, Rui Zhang, Goichiro Hanaoka, 2006, ACISP.

Parallel Key-Insulated Public Key Encryption

Hideki Imai, Goichiro Hanaoka, Yumiko Hanaoka, 2006, Public Key Cryptography.

On the Security of Linear Sketch Schemes against Recovering Attacks

Goichiro Hanaoka, Takahiro Matsuda, Kenta Takahashi, 2018, ICETE.

Impossibility on Tamper-Resilient Cryptography with Uniqueness Properties

Goichiro Hanaoka, Keisuke Tanaka, Takahiro Matsuda, 2018, IACR Cryptol. ePrint Arch..

A Survey on Identity-Based Encryption from Lattices

Goichiro Hanaoka, Shota Yamada, Goichiro Hanaoka, 2017, CREST Crypto-Math Project.

Conversions among Several Classes of Predicate Encryption and Their Applications

Goichiro Hanaoka, Nuttapong Attrapadung, Shota Yamada, 2015, IACR Cryptol. ePrint Arch..

Sequential Bitwise Sanitizable Signature Schemes

Shoichi Hirose, Kunihiko Miyazaki, Atsuko Miyaji, 2011, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

CDH 仮定に基づく衝突困難ハッシュ関数を用いない強偽造不可能性を持つ署名方式 A CDH-based Strongly Unforgeable Signature in the Standard Model without Collision Resistant Hash Function

Goichiro Hanaoka, H. Imai, Takahiro Matsuda, 2006 .

On the Security of Schnorr Signatures, DSA, and ElGamal Signatures against Related-Key Attacks

Jacob C. N. Schuldt, Goichiro Hanaoka, Tetsu Iwata, 2017, IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences.

Key Management for Versatile Pay-TV Services

Goichiro Hanaoka, Kazuto Ogawa, Sakurako Tamura, 2017, STM.

Ciphertext Policy Multi-dimensional Range Encryption

Hideki Imai, Goichiro Hanaoka, Takahiro Matsuda, 2012, ICISC.

Generic Constructions of Parallel Key-Insulated Encryption

Jian Weng, Goichiro Hanaoka, Goichiro Hanaoka, 2010, SCN.

An Efficient Strong Key-Insulated Signature Scheme and Its Application

Goichiro Hanaoka, Kazuto Ogawa, Go Ohtake, 2008, EuroPKI.

Exposing Private User Behaviors of Collaborative Filtering via Model Inversion Techniques

Goichiro Hanaoka, Seira Hidano, Shinsaku Kiyomoto, 2020, Proc. Priv. Enhancing Technol..

MOBIUS: Model-Oblivious Binarized Neural Networks

Naoto Yanai, Goichiro Hanaoka, Takahiro Matsuda, 2018, IEEE Access.

Secure Division Protocol and Applications to Privacy-preserving Chi-squared Tests

Koji Nuida, Goichiro Hanaoka, Kiyoshi Asai, 2018, 2018 International Symposium on Information Theory and Its Applications (ISITA).

Constant-Round Client-Aided Secure Comparison Protocol

Koji Nuida, Goichiro Hanaoka, Satsuya Ohata, 2018, ESORICS.

Generic Constructions for Fully Secure Revocable Attribute-Based Encryption

Keita Emura, Goichiro Hanaoka, Keisuke Tanaka, 2018, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Applications of Signcryption

Goichiro Hanaoka, Yang Cui, Goichiro Hanaoka, 2010, Practical Signcryption.

Compact Public Key Encryption with Minimum Ideal Property of Hash Functions

Kazuki Yoneyama, Goichiro Hanaoka, Goichiro Hanaoka, 2014, ProvSec.

A Revocable Group Signature Scheme from Identity-Based Revocation Techniques: Achieving Constant-Size Revocation List

Yusuke Sakai, Keita Emura, Goichiro Hanaoka, 2014, ACNS.

Chosen Ciphertext Security via UCE

Goichiro Hanaoka, Takahiro Matsuda, Goichiro Hanaoka, 2014, Public Key Cryptography.

Achieving Chosen Ciphertext Security from Detectable Public Key Encryption Efficiently via Hybrid Encryption

Goichiro Hanaoka, Takahiro Matsuda, Goichiro Hanaoka, 2013, IWSEC.

Relations between Constrained and Bounded Chosen Ciphertext Security for Key Encapsulation Mechanisms

Goichiro Hanaoka, Takahiro Matsuda, Kanta Matsuura, 2012, Public Key Cryptography.

Group Signature Implies PKE with Non-interactive Opening and Threshold PKE

Yusuke Sakai, Keita Emura, Goichiro Hanaoka, 2010, IWSEC.

Public Key Encryption Schemes with Bounded CCA Security and Optimal Ciphertext Length Based on the CDH Assumption

Goichiro Hanaoka, Anderson C. A. Nascimento, Rafael Dowsley, 2010, ISC.

Simple CCA-Secure Public Key Encryption from Any Non-Malleable Identity-Based Encryption

Goichiro Hanaoka, Takahiro Matsuda, Kanta Matsuura, 2009, ICISC.

A Fuzzy ID-Based Encryption Efficient When Error Rate Is Low

Goichiro Hanaoka, Nuttapong Attrapadung, Jun Furukawa, 2008, INDOCRYPT.

Some Information Theoretic Arguments for Encryption: Non-malleability and Chosen-Ciphertext Security (Invited Talk)

Goichiro Hanaoka, Goichiro Hanaoka, 2008, ICITS.

Chosen Ciphertext Security on Hard Membership Decision Groups: The Case of Semi-smooth Subgroups of Quadratic Residues

Koji Nuida, Goichiro Hanaoka, Takashi Yamakawa, 2014, SCN.

Generic Construction of Chosen Ciphertext Secure Proxy Re-Encryption

Yunlei Zhao, Jian Weng, Rui Zhang, 2012, CT-RSA.

Trade-Off Traitor Tracing

Hideki Imai, Goichiro Hanaoka, Kazuto Ogawa, 2007, INDOCRYPT.

Efficient Asymmetric Self-Enforcement Scheme with Public Traceability

Hideki Imai, Goichiro Hanaoka, Yuji Watanabe, 2001, Public Key Cryptography.

Fast Lattice Basis Reduction Suitable for Massive Parallelization and Its Application to the Shortest Vector Problem

Kenji Kashiwabara, Goichiro Hanaoka, Tadanori Teruya, 2018, Public Key Cryptography.

A Public-Key Encryption Scheme Based on Non-linear Indeterminate Equations

Tsuyoshi Takagi, Koji Nuida, Goichiro Hanaoka, 2017, SAC.

Information-theoretically secure oblivious polynomial evaluation in the commodity-based model

Goichiro Hanaoka, Rafael Tonicelli, Anderson C. A. Nascimento, 2014, International Journal of Information Security.

Anonymous Authentication Scheme for Subscription Services

Goichiro Hanaoka, Kazuto Ogawa, Go Ohtake, 2007, KES.

An Improvement of Pseudorandomization against Unbounded Attack Algorithms - The Case of Fingerprint Codes

Koji Nuida, Goichiro Hanaoka, Goichiro Hanaoka, 2009, ICITS.

A Trade-off Traitor Tracing Scheme

Hideki Imai, Goichiro Hanaoka, Kazuto Ogawa, 2009, IEICE Trans. Inf. Syst..

Proxy Re-Encryption That Supports Homomorphic Operations for Re-Encrypted Ciphertexts

Takato Hirano, Yutaka Kawai, Yoshihiro Koseki, 2019, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

An Asymptotically Optimal Method for Converting Bit Encryption to Multi-Bit Encryption

Goichiro Hanaoka, Takahiro Matsuda, Goichiro Hanaoka, 2015, ASIACRYPT.

Towards User-Friendly Cryptography

Goichiro Hanaoka, Goichiro Hanaoka, 2016, Mycrypt.

Efficient Two-level Homomorphic Encryption in Prime-order Bilinear Groups and A Fast Implementation in WebAssembly

Yusuke Sakai, Goichiro Hanaoka, Kana Shimizu, 2018, AsiaCCS.

Fully Anonymous Group Signature with Verifier-Local Revocation

Goichiro Hanaoka, K. Emura, Yusuke Sakai, 2021, IACR Cryptol. ePrint Arch..

Efficient Identity-Based Encryption with Tight Security Reduction

Goichiro Hanaoka, H. Imai, Jun Furukawa, 2006, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Shortening the Libert-Peters-Yung Revocable Group Signature Scheme by Using the Random Oracle Methodology

Kazuo Ohta, Yusuke Sakai, Keita Emura, 2019, IACR Cryptol. ePrint Arch..

Time-specific encryption from forward-secure encryption: generic and direct constructions

Hideki Imai, Keita Emura, Goichiro Hanaoka, 2015, International Journal of Information Security.

Signatures Resilient to Uninvertible Leakage

Goichiro Hanaoka, Keisuke Tanaka, Takahiro Matsuda, 2016, SCN.

More Efficient Two-Round Multi-Signature Scheme with Provably Secure Parameters

Goichiro Hanaoka, K. Ohta, Yusuke Sakai, 2023, IACR Cryptol. ePrint Arch..

On the Security of Non-Interactive Key Exchange against Related-Key Attacks

Jacob C. N. Schuldt, Goichiro Hanaoka, Tetsu Iwata, 2017, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Cryptanalysis of Aggregate Γ-Signature and Practical Countermeasures in Application to Bitcoin

Yunlei Zhao, Bagus Santoso, Yusuke Sakai, 2020, IACR Cryptology ePrint Archive.

Practical Public-Key Encryption Scheme Tightly Secure in the Random Oracle Model

Yusuke Sakai, Goichiro Hanaoka, Goichiro Hanaoka, 2020, IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences.

Embedding Lemmas for Functional Encryption

Goichiro Hanaoka, Takahiro Matsuda, Nuttapong Attrapadung, 2018, 2018 International Symposium on Information Theory and Its Applications (ISITA).

Attribute Based Encryption with Direct Efficiency Tradeoff

Tsutomu Matsumoto, Goichiro Hanaoka, Nuttapong Attrapadung, 2016, ACNS.

A Framework and Compact Constructions for Non-monotonic Attribute-Based Encryption

Goichiro Hanaoka, Nuttapong Attrapadung, Noboru Kunihiro, 2014, Public Key Cryptography.