On the complexity of negation-limited Boolean networks. - Keisuke Tanaka; Tetsuro Nishino (STOC, 1994)

More on the complexity of negation-limited circuits. - Robert Beals; Tetsuro Nishino; Keisuke Tanaka (STOC, 1995)

On the Negation-Limited Circuit Complexity of Clique Functions. - Tetsuro Nishino; Keisuke Tanaka (IEICE Trans. Inf. Syst., 1995)

Approximation and Special Cases of Common Subtrees and Editing Distance. - Magnús M. Halldórsson; Keisuke Tanaka (ISAAC, 1996)

Negation-Limited Circuit Complexity of Symmetric Functions. - Keisuke Tanaka; Tetsuro Nishino; Robert Beals (Inf. Process. Lett., 1996)

On the Complexity of Negation-Limited Boolean Networks. - Robert Beals; Tetsuro Nishino; Keisuke Tanaka (SIAM J. Comput., 1998)

Minimizing maximum absolute lateness and range of lateness under generalizeddue dates on a single machine. - Keisuke Tanaka; Milan Vlach (Ann. Oper. Res., 1999)

Quantum Public-Key Cryptosystems. - Tatsuaki Okamoto; Keisuke Tanaka; Shigenori Uchiyama (CRYPTO, 2000)

An exponential gap with the removal of one negation gate. - Shao Chin Sung; Keisuke Tanaka (Inf. Process. Lett., 2002)

Mimicry: Another Approach for Interactive Comedy. - Ruck Thawonmas; Hiroki Hassaku; Keisuke Tanaka (GAME-ON, 2003)

Extended Hierarchical Task Network Planning for Interactive Comedy. - Ruck Thawonmas; Keisuke Tanaka; Hiroki Hassaku (PRIMA, 2003)

Quantum Bit-commitment for Small Storage Based on Quantum One-way Permutations. - Keisuke Tanaka (New Gener. Comput., 2003)

An RSA Family of Trap-Door Permutations with a Common Domain and Its Applications. - Ryotaro Hayashi 001; Tatsuaki Okamoto; Keisuke Tanaka (Public Key Cryptography, 2004)

Limiting negations in bounded-depth circuits: An extension of Markov's theorem. - Shao Chin Sung; Keisuke Tanaka (Inf. Process. Lett., 2004)

An (n-t)-out-of-n Threshold Ring Signature Scheme. - Toshiyuki Isshiki; Keisuke Tanaka (ACISP, 2005)

Universally Anonymizable Public-Key Encryption. - Ryotaro Hayashi 001; Keisuke Tanaka (ASIACRYPT, 2005)

Security for Authenticated Key Exchange Based on Non-Malleability. - Hiroki Hada; Keisuke Tanaka (ICITA (2), 2005)

Universal Designated-Verifier Signature with Aggregation. - Akihiro Mihara; Keisuke Tanaka (ICITA (2), 2005)

The Sampling Twice Technique for the RSA-Based Cryptosystems with Anonymity. - Ryotaro Hayashi 001; Keisuke Tanaka (Public Key Cryptography, 2005)

Shufle for Paillier's Encryption Scheme. - Takao Onodera; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2005)

PA in the Two-Key Setting and a Generic Conversion for Encryption with Anonymity. - Ryotaro Hayashi 001; Keisuke Tanaka (ACISP, 2006)

Secret Handshake with Multiple Groups. - Naoyuki Yamashita; Keisuke Tanaka (WISA, 2006)

Schemes for Encryption with Anonymity and Ring Signature. - Ryotaro Hayashi 001; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

A Cramer-Shoup Variant Related to the Quadratic Residuosity Problem. - Harunaga Hiwatari; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2006)

Anonymity on Paillier's Trap-Door Permutation. - Ryotaro Hayashi 001; Keisuke Tanaka (ACISP, 2007)

Multi-bit Cryptosystems Based on Lattice Problems. - Akinori Kawachi; Keisuke Tanaka; Keita Xagawa (Public Key Cryptography, 2007)

The IllusionHole for Medical Applications. - Yoshifumi Kitamura; Takashi Nakashima; Keisuke Tanaka; Takeshi Johkoh (VR, 2007)

Public-Key Cryptosystems with Primitive Power Roots of Unity. - Takato Hirano; Koichiro Wada; Keisuke Tanaka (ACISP, 2008)

Concurrently Secure Identification Schemes Based on the Worst-Case Hardness of Lattice Problems. - Akinori Kawachi; Keisuke Tanaka; Keita Xagawa (ASIACRYPT, 2008)

Security of Digital Signature Schemes in Weakened Random Oracle Models. - Akira Numayama; Toshiyuki Isshiki; Keisuke Tanaka (Public Key Cryptography, 2008)

Conditional Converge Cast. - Daisuke Inoue; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2008)

Multi-recipient Public-Key Encryption from Simulators in Security Proofs. - Harunaga Hiwatari; Keisuke Tanaka; Tomoyuki Asano; Koichi Sakumoto (ACISP, 2009)

Security on Hybrid Encryption with the Tag-KEM/DEM Framework. - Toshihide Matsuda; Ryo Nishimaki; Akira Numayama; Keisuke Tanaka (ACISP, 2009)

On the Weak Ideal Compression Functions. - Akira Numayama; Keisuke Tanaka (ACISP, 2009)

On the Insecurity of the Fiat-Shamir Signatures with Iterative Hash Functions. - Eiichiro Fujisaki; Ryo Nishimaki; Keisuke Tanaka (ProvSec, 2009)

Efficient Non-interactive Universally Composable String-Commitment Schemes. - Ryo Nishimaki; Eiichiro Fujisaki; Keisuke Tanaka (ProvSec, 2009)

Zero-Knowledge Protocols for NTRU: Application to Identification and Proof of Plaintext Knowledge. - Keita Xagawa; Keisuke Tanaka (ProvSec, 2009)

Efficient Public Key Encryption Based on Ideal Lattices. - Damien Stehlé; Ron Steinfeld; Keisuke Tanaka; Keita Xagawa (IACR Cryptol. ePrint Arch., 2009)

Primitive Power Roots of Unity and Its Application to Encryption. - Takato Hirano; Koichiro Wada; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

Symmetricity of the Protocols Related to Oblivious Transfer. - Daisuke Inoue; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2009)

CCA Proxy Re-Encryption without Bilinear Maps in the Standard Model. - Toshihide Matsuda; Ryo Nishimaki; Keisuke Tanaka (Public Key Cryptography, 2010)

Security of Encryption Schemes in Weakened Random Oracle Models. - Akinori Kawachi; Akira Numayama; Keisuke Tanaka; Keita Xagawa (IACR Cryptol. ePrint Arch., 2010)

Key Generation for Fast Inversion of the Paillier Encryption Function. - Takato Hirano; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

A Rational Secret-Sharing Scheme Based on RSA-OAEP. - Toshiyuki Isshiki; Koichiro Wada; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2010)

Weak Oblivious Transfer from Strong One-Way Functions. - Keisuke Tanaka; Akihiro Yamada; Kenji Yasunaga (ProvSec, 2011)

Characterization of the relations between information-theoretic non-malleability, secrecy, and authenticity. - Akinori Kawachi; Christopher Portmann; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2011)

Information-Theoretic Secrecy with Access to Decryption Oracles. - Christopher Portmann; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2011)

Programmability in the Generic Ring and Group Models. - Mario Larangeira; Keisuke Tanaka (J. Internet Serv. Inf. Secur., 2011)

A Game-Theoretic Perspective on Oblivious Transfer. - Haruna Higo; Keisuke Tanaka; Akihiro Yamada; Kenji Yasunaga (ACISP, 2012)

Symmetric-Key Encryption Scheme with Multi-ciphertext Non-malleability. - Akinori Kawachi; Hirotoshi Takebe; Keisuke Tanaka (IWSEC, 2012)

Reduction-Centric Non-programmable Security Proof for the Full Domain Hash in the Random Oracle Model. - Mario Larangeira; Keisuke Tanaka (WISA, 2012)

An Efficient Non-interactive Universally Composable String-Commitment Scheme. - Ryo Nishimaki; Eiichiro Fujisaki; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

A Multi-Trapdoor Commitment Scheme from the RSA Assumption. - Ryo Nishimaki; Eiichiro Fujisaki; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2012)

Proxy Re-Encryption in a Stronger Security Model Extended from CT-RSA2012. - Toshiyuki Isshiki; Manh Ha Nguyen; Keisuke Tanaka (CT-RSA, 2013)

A 3D vision 2.1Mpixel image sensor for single-lens camera systems. - Shinzo Koyama; Kazutoshi Onozawa; Keisuke Tanaka; Yoshihisa Kato (ISSCC, 2013)

Game-Theoretic Security for Bit Commitment. - Haruna Higo; Keisuke Tanaka; Kenji Yasunaga (IWSEC, 2013)

Attacks to the Proxy Re-Encryption Schemes from IWSEC2011. - Toshiyuki Isshiki; Manh Ha Nguyen; Keisuke Tanaka (IWSEC, 2013)

Factoring-Based Proxy Re-Encryption Schemes. - Toshiyuki Isshiki; Manh Ha Nguyen; Keisuke Tanaka (ProvSec, 2013)

Grey-Box Public-Key Steganography. - Hirotoshi Takebe; Keisuke Tanaka (TAMC, 2013)

Leakage-Resilience of Stateless/Stateful Public-Key Encryption from Hash Proofs. - Manh Ha Nguyen; Kenji Yasunaga; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2013)

Approximation and parameterized algorithms for common subtrees and edit distance between unordered trees. - Tatsuya Akutsu; Daiji Fukagawa; Magnús M. Halldórsson; Atsuhiro Takasu; Keisuke Tanaka (Theor. Comput. Sci., 2013)

Efficient Key Dependent Message Security Amplification Against Chosen Ciphertext Attacks. - Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (ICISC, 2014)

A proposal of novel q-DWT for blind and robust image watermarking. - Ta Minh Thanh; Keisuke Tanaka (PIMRC, 2014)

Generic Transformation to Strongly Existentially Unforgeable Signature Schemes with Leakage Resiliency. - Yuyu Wang 001; Keisuke Tanaka (ProvSec, 2014)

Randomness Leakage in the KEM/DEM Framework. - Hitoshi Namiki; Keisuke Tanaka; Kenji Yasunaga (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2014)

Generic Transformation to Strongly Existentially Unforgeable Signature Schemes with Continuous Leakage Resiliency. - Yuyu Wang 001; Keisuke Tanaka (ACISP, 2015)

Completeness of Single-Bit Projection-KDM Security for Public Key Encryption. - Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (CT-RSA, 2015)

Comparison of Watermarking Schemes Using Linear and Nonlinear Feature Matching. - Ta Minh Thanh; Keisuke Tanaka (KSE, 2015)

Blind Watermarking using QIM and the Quantized SVD Domain based on the q-Logarithm Function. - Ta Minh Thanh; Keisuke Tanaka (VISAPP (3), 2015)

Post-Challenge Leakage Resilient Public-Key Cryptosystem in Split State Model. - Eiichiro Fujisaki; Akinori Kawachi; Ryo Nishimaki; Keisuke Tanaka; Kenji Yasunaga (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

Disavowable Public Key Encryption with Non-Interactive Opening. - Ai Ishida; Keita Emura; Goichiro Hanaoka; Yusuke Sakai 001; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2015)

Lower Bounds for Key Length of k-wise Almost Independent Permutations and Certain Symmetric-Key Encryption Schemes. - Akinori Kawachi; Hirotoshi Takebe; Keisuke Tanaka (IWSEC, 2016)

Signatures Resilient to Uninvertible Leakage. - Yuyu Wang 001; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (SCN, 2016)

Game-Theoretic Security for Two-Party Protocols. - Haruna Higo; Keisuke Tanaka; Akihiro Yamada; Kenji Yasunaga (IACR Cryptol. ePrint Arch., 2016)

On the Key Dependent Message Security of the Fujisaki-Okamoto Constructions. - Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2016)

How to Obtain Fully Structure-Preserving (Automorphic) Signatures from Structure-Preserving Ones. - Yuyu Wang 001; Zongyang Zhang; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2016)

Foreword. - Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2016)

Strongly simulation-extractable leakage-resilient NIZK. - Yuyu Wang 001; Keisuke Tanaka (Int. J. Inf. Sec., 2016)

The novel and robust watermarking method based on q-logarithm frequency domain. - Ta Minh Thanh; Keisuke Tanaka (Multim. Tools Appl., 2016)

Generic transformations for existentially unforgeable signature schemes in the bounded leakage model. - Yuyu Wang 001; Keisuke Tanaka (Secur. Commun. Networks, 2016)

How to Strengthen the Security of Signature Schemes in the Leakage Models: A Survey. - Yuyu Wang 001; Keisuke Tanaka (CREST Crypto-Math Project, 2017)

Constructions for the IND-CCA1 Secure Fully Homomorphic Encryption. - Satoshi Yasuda; Fuyuki Kitagawa; Keisuke Tanaka (CREST Crypto-Math Project, 2017)

CCA2 Key-Privacy for Code-Based Encryption in the Standard Model. - Yusuke Yoshida; Kirill Morozov; Keisuke Tanaka (PQCrypto, 2017)

General Constructions of Rational Secret Sharing with Expected Constant-Round Reconstruction. - Akinori Kawachi; Yoshio Okamoto; Keisuke Tanaka; Kenji Yasunaga (Comput. J., 2017)

Indistinguishability Obfuscation: Simpler Constructions using Secret-Key Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

Indistinguishability Obfuscation for All Circuits from Secret-Key Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

From Single-Key to Collusion-Resistant Secret-Key Functional Encryption by Leveraging Succinctness. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

Key Dependent Message Security and Receiver Selective Opening Security for Identity-Based Encryption. - Fuyuki Kitagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

Anonymous Single-Round Server-Aided Verification. - Elena Pagnin; Aikaterini Mitrokotsa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2017)

Group Signature with Deniability: How to Disavow a Signature. - Ai Ishida; Keita Emura; Goichiro Hanaoka; Yusuke Sakai 001; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

Generic Transformation for Signatures in the Continual Leakage Model. - Yuyu Wang 001; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2017)

An image zero-watermarking algorithm based on the encryption of visual map feature with watermark information. - Ta Minh Thanh; Keisuke Tanaka (Multim. Tools Appl., 2017)

Fully Anonymous Group Signature with Verifier-Local Revocation. - Ai Ishida; Yusuke Sakai 001; Keita Emura; Goichiro Hanaoka; Keisuke Tanaka (SCN, 2018)

Weakened Random Oracle Models with Target Prefix. - Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (SecITC, 2018)

Adaptively Secure and Succinct Functional Encryption: Improving Security and Efficiency, Simultaneously. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka; Takashi Yamakawa (IACR Cryptol. ePrint Arch., 2018)

A Framework for Achieving KDM-CCA Secure Public-Key Encryption. - Fuyuki Kitagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2018)

Memory Lower Bounds of Reductions Revisited. - Yuyu Wang 001; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2018)

Impossibility on Tamper-Resilient Cryptography with Uniqueness Properties. - Yuyu Wang 001; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2018)

Generic Constructions for Fully Secure Revocable Attribute-Based Encryption. - Kotoko Yamada; Nuttapong Attrapadung; Keita Emura; Goichiro Hanaoka; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2018)

Performance analysis of robust watermarking using linear and nonlinear feature matching. - Ta Minh Thanh; Keisuke Tanaka; Luu Hong Dung; Nguyen Tuan Tai; Hai Nguyen Nam (Multim. Tools Appl., 2018)

A t-out-of-n Redactable Signature Scheme. - Masayuki Tezuka; Xiangyu Su; Keisuke Tanaka (CANS, 2019)

Proper Usage of the Group Signature Scheme in ISO/IEC 20008-2. - Ai Ishida; Yusuke Sakai 001; Keita Emura; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2019)

SoK: A Taxonomy for Layer-2 Scalability Related Protocols for Cryptocurrencies. - Maxim Jourenko; Kanta Kurazumi; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2019)

Simple and Efficient KDM-CCA Secure Public Key Encryption. - Fuyuki Kitagawa; Takahiro Matsuda 002; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2019)

Non-Committing Encryption with Quasi-Optimal Ciphertext-Rate Based on the DDH Problem. - Yusuke Yoshida; Fuyuki Kitagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2019)

Simulation-based receiver selective opening CCA secure PKE from standard computational assumptions. - Keisuke Hara; Fuyuki Kitagawa; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (Theor. Comput. Sci., 2019)

Improved Security Proof for the Camenisch-Lysyanskaya Signature-Based Synchronized Aggregate Signature Scheme. - Masayuki Tezuka; Keisuke Tanaka (ACISP, 2020)

Security Definitions on Time-Lock Puzzles. - Daiki Hiraga; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (ICISC, 2020)

Secret Sharing with Statistical Privacy and Computational Relaxed Non-malleability. - Tasuku Narita; Fuyuki Kitagawa; Yusuke Yoshida; Keisuke Tanaka (ICISC, 2020)

Evaluation of task difficulty based on fluctuation characteristics in writing task. - Keisuke Tanaka; Ken Arai; Masafumi Uchida (Artif. Life Robotics, 2020)

Lightweight Virtual Payment Channels. - Maxim Jourenko; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2020)

Payment Trees: Low Collateral Payments for Payment Channel Networks. - Maxim Jourenko; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2020)

Non-Committing Encryption with Constant Ciphertext Expansion from Standard Assumptions. - Yusuke Yoshida; Fuyuki Kitagawa; Keita Xagawa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2020)

Environmental Adaptive Privacy Preserving Contact Tracing System for Respiratory Infectious Diseases. - Pengfei Wang; Xiangyu Su; Maxim Jourenko; Zixian Jiang; Mario Larangeira; Keisuke Tanaka (CSS, 2021)

Forward Secure Message Franking. - Hiroki Yamamuro; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (ICISC, 2021)

Ring Signature With Unconditional Anonymity in the Plain Model. - Keisuke Hara; Keisuke Tanaka (IEEE Access, 2021)

Evaluation of handwriting task difficulty based on detrended fluctuation analysis. - Keisuke Tanaka; Masafumi Uchida (Artif. Life Robotics, 2021)

Turn-Based Communication Channels. - Carlo Brunetta; Mario Larangeira; Bei Liang; Aikaterini Mitrokotsa; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2021)

Interhead Hydra Two Heads are Better than One. - Maxim Jourenko; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2021)

Fully Anonymous Group Signature with Verifier-Local Revocation. - Ai Kitagawa; Yusuke Sakai 001; Keita Emura; Goichiro Hanaoka; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2021)

Receiver Selective Opening CCA Secure Public Key Encryption from Various Assumptions. - Yi Lu 020; Keisuke Hara; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Watermarkable Signature with Computational Function Preserving. - Kyohei Sudo; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Redactable Signature with Compactness from Set-Commitment. - Masayuki Tezuka; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2021)

Fine-Grained Cryptography Revisited. - Shohei Egashira; Yuyu Wang 001; Keisuke Tanaka (J. Cryptol., 2021)

Simple and Generic Constructions of Succinct Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (J. Cryptol., 2021)

Tightly secure ring signatures in the standard model. - Keisuke Hara; Keisuke Tanaka (Theor. Comput. Sci., 2021)

Efficient Two-Party Exponentiation from Quotient Transfer. - Yi Lu 020; Keisuke Hara; Kazuma Ohara; Jacob C. N. Schuldt; Keisuke Tanaka (ACNS, 2022)

Analysis of (U, U+V)-code Problem with Gramian over Binary and Ternary Fields. - Ichiro Iwata; Yusuke Yoshida; Keisuke Tanaka (ICISC, 2022)

Pointcheval-Sanders Signature-Based Synchronized Aggregate Signature. - Masayuki Tezuka; Keisuke Tanaka (ICISC, 2022)

Multikey Verifiable Homomorphic Encryption. - Yi Lu 020; Keisuke Hara; Keisuke Tanaka (IEEE Access, 2022)

How to Prove Work: With Time or Memory. - Xiangyu Su; Mario Larangeira; Keisuke Tanaka (IEEE Access, 2022)

Environmental Adaptive Privacy Preserving Contact Tracing System: A Construction From Public Key Rerandomizable BLS Signatures. - Pengfei Wang; Xiangyu Su; Maxim Jourenko; Zixian Jiang; Mario Larangeira; Keisuke Tanaka (IEEE Access, 2022)

Generic transformation from broadcast encryption to round-optimal deniable ring authentication. - Keisuke Hara; Takahiro Matsuda 002; Goichiro Hanaoka; Keisuke Tanaka (Des. Codes Cryptogr., 2022)

Bid-Matching Problem and Score-Based Consensus for Peer-to-Peer Energy Trading. - Xiangyu Su; Xavier Défago; Mario Larangeira; Kazuyuki Mori; Takuya Oda; Yuta Okumura; Yasumasa Tamura; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2022)

Receiver Selective Opening Chosen Ciphertext Secure Identity-Based Encryption. - Keisuke Hara; Takahiro Matsuda 002; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2022)

CCA Security and Trapdoor Functions via Key-Dependent-Message Security. - Fuyuki Kitagawa; Takahiro Matsuda 002; Keisuke Tanaka (J. Cryptol., 2022)

Obfustopia Built on Secret-Key Functional Encryption. - Fuyuki Kitagawa; Ryo Nishimaki; Keisuke Tanaka (J. Cryptol., 2022)

1-out-of-n Oblivious Signatures: Security Revisited and a Generic Construction with an Efficient Communication Cost. - Masayuki Tezuka; Keisuke Tanaka (ICISC (1), 2023)

Provably Secure Blockchain Protocols from Distributed Proof-of-Deep-Learning. - Xiangyu Su; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2023)

Auditable Attribute-Based Credentials Scheme and Its Applications in Contact Tracing. - Pengfei Wang; Xiangyu Su; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2023)

Forward Secure Message Franking with Updatable Reporting Tags. - Hiroki Yamamuro; Keisuke Hara; Masayuki Tezuka; Yusuke Yoshida; Keisuke Tanaka (IEICE Trans. Fundam. Electron. Commun. Comput. Sci., 2023)

Auditable Attribute-Based Credentials Scheme and Its Application in Contact Tracing. - Pengfei Wang; Xiangyu Su; Mario Larangeira; Keisuke Tanaka (ACNS (1), 2024)

Optimizing Liveness for Blockchain-Based Sealed-Bid Auctions in Rational Settings. - Maozhou Huang; Xiangyu Su; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2024)

On the Relationship between FuncCPA and FuncCPA+. - Takumi Shinozaki; Keisuke Tanaka; Masayuki Tezuka; Yusuke Yoshida (IACR Cryptol. ePrint Arch., 2024)

Double Auction Meets Blockchain: Consensus from Scored Bid-Assignment. - Xiangyu Su; Xavier Défago; Mario Larangeira; Kazuyuki Mori; Takuya Oda; Yasumasa Tamura; Keisuke Tanaka (ACNS (1), 2025)

Universally Composable Relaxed Asymmetric Password-Authenticated Key Exchange. - Shuya Hanai; Keisuke Tanaka; Masayuki Tezuka; Yusuke Yoshida (IACR Cryptol. ePrint Arch., 2025)

Adaptively Secure Blockchain-Aided Decentralized Storage Networks: Formalization and Generic Construction. - Xiangyu Su; Yuma Tamagawa; Mario Larangeira; Keisuke Tanaka (IACR Cryptol. ePrint Arch., 2025)