| 2020 | ISITA | How to Detect Malicious Behaviors in a Card-Based Majority Voting Protocol with Three Inputs. | Yoshiki Abe, Mitsugu Iwamoto, Kazuo Ohta |
| 2020 | ISITA | A Key Recovery Algorithm Using Random Key Leakage from AES Key Schedule. | Tomoki Uemura, Yohei Watanabe, Yang Li, Noriyuki Miura, Mitsugu Iwamoto, Kazuo Sakiyama, Kazuo Ohta |
| 2020 | ProvSec | Achieving Pairing-Free Aggregate Signatures using Pre-Communication between Signers. | Kaoru Takemure, Yusuke Sakai, Bagus Santoso, Goichiro Hanaoka, Kazuo Ohta |
| 2019 | TCC | Efficient Private PEZ Protocols for Symmetric Functions. | Yoshiki Abe, Mitsugu Iwamoto, Kazuo Ohta |
| 2018 | ISITA | Card-Based Majority Voting Protocols with Three Inputs Using Three Cards. | Yohei Watanabe, Yoshihisa Kuroki, Shinnosuke Suzuki, Yuta Koga, Mitsugu Iwamoto, Kazuo Ohta |
| 2016 | CANS | Probabilistic Generation of Trapdoors: Reducing Information Leakage of Searchable Symmetric Encryption. | Kenichiro Hayasaka, Yutaka Kawai, Yoshihiro Koseki, Takato Hirano, Kazuo Ohta, Mitsugu Iwamoto |
| 2016 | CANS | Efficient Card-Based Cryptographic Protocols for Millionaires' Problem Utilizing Private Permutations. | Takeshi Nakai, Yuuki Tokushige, Yuto Misawa, Mitsugu Iwamoto, Kazuo Ohta |
| 2016 | IWSEC | Simple, Secure, and Efficient Searchable Symmetric Encryption with Multiple Encrypted Indexes. | Takato Hirano, Mitsuhiro Hattori, Yutaka Kawai, Nori Matsuda, Mitsugu Iwamoto, Kazuo Ohta, Yusuke Sakai, Tatsuji Munaka |
| 2015 | ACISP | Dynamic Threshold Public-Key Encryption with Decryption Consistency from Static Assumptions. | Yusuke Sakai, Keita Emura, Jacob C. N. Schuldt, Goichiro Hanaoka, Kazuo Ohta |
| 2014 | ACNS | Reset Indifferentiability from Weakened Random Oracle Salvages One-Pass Hash Functions. | Yusuke Naito, Kazuki Yoneyama, Kazuo Ohta |
| 2014 | CCS | Privacy-preserving smart metering with verifiability for both billing and energy management. | Kazuma Ohara, Yusuke Sakai, Fumiaki Yoshida, Mitsugu Iwamoto, Kazuo Ohta |
| 2014 | ISITA | Cheating on a visual secret sharing scheme under a realistic scenario. | Pichanee Lumyong, Mitsugu Iwamoto, Kazuo Ohta |
| 2014 | ITW | A new model of Client-Server Communications under information theoretic security. | Mitsugu Iwamoto, Tsukasa Omino, Yuichi Komano, Kazuo Ohta |
| 2014 | SCN | Improved Indifferentiable Security Analysis of PHOTON. | Yusuke Naito, Kazuo Ohta |
| 2013 | SECRYPT | Meet-in-the-Middle Preimage Attacks Revisited - New Results on MD5 and HAVAL. | Yu Sasaki, Wataru Komatsubara, Yasuhide Sakai, Lei Wang, Mitsugu Iwamoto, Kazuo Sakiyama, Kazuo Ohta |
| 2012 | FDTC | An Efficient Countermeasure against Fault Sensitivity Analysis Using Configurable Delay Blocks. | Sho Endo, Yang Li, Naofumi Homma, Kazuo Sakiyama, Kazuo Ohta, Takafumi Aoki |
| 2012 | ICISC | Key-Dependent Weakness of AES-Based Ciphers under Clockwise Collision Distinguisher. | Toshiki Nakasone, Yang Li, Yu Sasaki, Mitsugu Iwamoto, Kazuo Ohta, Kazuo Sakiyama |
| 2012 | ISPEC | New Truncated Differential Cryptanalysis on 3D Block Cipher. | Takuma Koyama, Lei Wang, Yu Sasaki, Kazuo Sakiyama, Kazuo Ohta |
| 2012 | IWSEC | Polynomial-Advantage Cryptanalysis of 3D Cipher and 3D-Based Hash Function. | Lei Wang, Yu Sasaki, Kazuo Sakiyama, Kazuo Ohta |
| 2012 | IWSEC | Boomerang Distinguishers for Full HAS-160 Compression Function. | Yu Sasaki, Lei Wang, Yasuhiro Takasaki, Kazuo Sakiyama, Kazuo Ohta |
| 2012 | PKC | On the Security of Dynamic Group Signatures: Preventing Signature Hijacking. | Yusuke Sakai, Jacob C. N. Schuldt, Keita Emura, Goichiro Hanaoka, Kazuo Ohta |
| 2011 | AINA | Yet Another Sanitizable and Deletable Signatures. | Tetsuya Izu, Masami Izumi, Noboru Kunihiro, Kazuo Ohta |
| 2011 | CHES | On the Power of Fault Sensitivity Analysis and Collision Side-Channel Attacks in a Combined Setting. | Amir Moradi, Oliver Mischke, Christof Paar, Yang Li, Kazuo Ohta, Kazuo Sakiyama |
| 2011 | CHES | Uniqueness Enhancement of PUF Responses Based on the Locations of Random Outputting RS Latches. | Dai Yamamoto, Kazuo Sakiyama, Mitsugu Iwamoto, Kazuo Ohta, Takao Ochiai, Masahiko Takenaka, Kouichi Itoh |
| 2011 | FC | A Study on Computational Formal Verification for Practical Cryptographic Protocol: The Case of Synchronous RFID Authentication. | Yoshikazu Hanatani, Miyako Ohkubo, Shin'ichiro Matsuo, Kazuo Sakiyama, Kazuo Ohta |
| 2011 | FDTC | Fault Sensitivity Analysis Against Elliptic Curve Cryptosystems. | Hikaru Sakamoto, Yang Li, Kazuo Ohta, Kazuo Sakiyama |
| 2011 | ISIT | Security notions for information theoretically secure encryptions. | Mitsugu Iwamoto, Kazuo Ohta |
| 2011 | IWSEC | Experimental Verification of Super-Sbox Analysis - Confirmation of Detailed Attack Complexity. | Yu Sasaki, Naoyuki Takayanagi, Kazuo Sakiyama, Kazuo Ohta |
| 2011 | ProvSec | Security of Practical Cryptosystems Using Merkle-Damgrd Hash Function in the Ideal Cipher Model. | Yusuke Naito, Kazuki Yoneyama, Lei Wang, Kazuo Ohta |
| 2010 | ASIACRYPT | Non-full-active Super-Sbox Analysis: Applications to ECHO and Grstl. | Yu Sasaki, Yang Li, Lei Wang, Kazuo Sakiyama, Kazuo Ohta |
| 2010 | CHES | Fault Sensitivity Analysis. | Yang Li, Kazuo Sakiyama, Shigeto Gomisawa, Toshinori Fukunaga, Junko Takahashi, Kazuo Ohta |
| 2010 | DATE | Improved countermeasure against Address-bit DPA for ECC scalar multiplication. | Masami Izumi, Jun Ikegami, Kazuo Sakiyama, Kazuo Ohta |
| 2010 | DATE | Power Variance Analysis breaks a masked ASIC implementation of AES. | Yang Li, Kazuo Sakiyama, Lejla Batina, Daisuke Nakatsu, Kazuo Ohta |
| 2010 | IWSEC | A Generic Method for Reducing Ciphertext Length of Reproducible KEMs in the RO Model. | Yusuke Sakai, Goichiro Hanaoka, Kaoru Kurosawa, Kazuo Ohta |
| 2010 | IWSEC | Universally Composable NBAC-Based Fair Voucher Exchange for Mobile Environments. | Kazuki Yoneyama, Masayuki Terada, Sadayuki Hongo, Kazuo Ohta |
| 2010 | SECRYPT | Proxiable Designated Verifier Signature. | Mebae Ushida, Kazuo Ohta, Yutaka Kawai, Kazuki Yoneyama |
| 2010 | WISA | Combination of SW Countermeasure and CPU Modification on FPGA against Power Analysis. | Daisuke Nakatsu, Yang Li, Kazuo Sakiyama, Kazuo Ohta |
| 2009 | ACNS | Algorithmic Tamper Proof (ATP) Counter Units for Authentication Devices Using PIN. | Yuichi Komano, Kazuo Ohta, Hideyuki Miyake, Atsushi Shimbo |
| 2009 | ASIACRYPT | How to Confirm Cryptosystems Security: The Original Merkle-Damgrd Is Still Alive! | Yusuke Naito, Kazuki Yoneyama, Lei Wang, Kazuo Ohta |
| 2009 | ICICS | Security Evaluation of a DPA-Resistant S-Box Based on the Fourier Transform. | Yang Li, Kazuo Sakiyama, Shin-ichi Kawamura, Yuichi Komano, Kazuo Ohta |
| 2009 | ISPEC | Secret Handshake: Strong Anonymity Definition and Construction. | Yutaka Kawai, Kazuki Yoneyama, Kazuo Ohta |
| 2009 | IWSEC | Bit-Free Collision: Application to APOP Attack. | Lei Wang, Yu Sasaki, Kazuo Sakiyama, Kazuo Ohta |
| 2008 | ACNS | Attribute-Based Encryption with Partially Hidden Encryptor-Specified Access Structures. | Takashi Nishide, Kazuki Yoneyama, Kazuo Ohta |
| 2008 | CCS | A strict evaluation method on the number of conditions for the SHA-1 collision search. | Jun Yajima, Terutoshi Iwasaki, Yusuke Naito, Yu Sasaki, Takeshi Shimoyama, Noboru Kunihiro, Kazuo Ohta |
| 2008 | EuroCrypt | New Key-Recovery Attacks on HMAC/NMAC-MD4 and NMAC-MD5. | Lei Wang, Kazuo Ohta, Noboru Kunihiro |
| 2008 | ProvSec | Leaky Random Oracle (Extended Abstract). | Kazuki Yoneyama, Satoshi Miyagawa, Kazuo Ohta |
| 2008 | WISA | Sanitizable and Deletable Signature. | Tetsuya Izu, Noboru Kunihiro, Kazuo Ohta, Makoto Sano, Masahiko Takenaka |
| 2008 | WISA | Extension of Secret Handshake Protocols with Multiple Groups in Monotone Condition. | Yutaka Kawai, Shotaro Tanno, Takahiro Kondo, Kazuki Yoneyama, Noboru Kunihiro, Kazuo Ohta |
| 2007 | ACISP | A New Strategy for Finding a Differential Path of SHA-1. | Jun Yajima, Yu Sasaki, Yusuke Naito, Terutoshi Iwasaki, Takeshi Shimoyama, Noboru Kunihiro, Kazuo Ohta |
| 2007 | CCS | Ring signatures: universally composable definitions and constructions. | Kazuki Yoneyama, Kazuo Ohta |
| 2007 | FSE | New Message Difference for MD4. | Yu Sasaki, Lei Wang, Kazuo Ohta, Noboru Kunihiro |
| 2007 | ICICS | Modeling Agreement Problems in the Universal Composability Framework. | Masayuki Terada, Kazuki Yoneyama, Sadayuki Hongo, Kazuo Ohta |
| 2007 | ISPEC | A Sanitizable Signature Scheme with Aggregation. | Tetsuya Izu, Noboru Kunihiro, Kazuo Ohta, Masahiko Takenaka, Takashi Yoshioka |
| 2007 | PKC | Multiparty Computation for Interval, Equality, and Comparison Without Bit-Decomposition Protocol. | Takashi Nishide, Kazuo Ohta |
| 2006 | ASIACRYPT | Improved Collision Search for SHA-0. | Yusuke Naito, Yu Sasaki, Takeshi Shimoyama, Jun Yajima, Noboru Kunihiro, Kazuo Ohta |
| 2006 | CCS | Problems on the MR micropayment schemes. | Masahiro Mambo, Moiss Salinas-Rosales, Kazuo Ohta, Noboru Kunihiro |
| 2006 | FC | Provably Secure Electronic Cash Based on Blind Multisignature Schemes. | Yoshikazu Hanatani, Yuichi Komano, Kazuo Ohta, Noboru Kunihiro |
| 2005 | ICISC | Improved Collision Attack on MD4 with Probability Almost 1. | Yusuke Naito, Yu Sasaki, Noboru Kunihiro, Kazuo Ohta |
| 2005 | WISA | Analysis on the Clockwise Transposition Routing for Dedicated Factoring Devices. | Tetsuya Izu, Noboru Kunihiro, Kazuo Ohta, Takeshi Shimoyama |
| 2004 | ICICS | Taxonomic Consideration to OAEP Variants and Their Security. | Yuichi Komano, Kazuo Ohta |
| 2004 | IGARSS | Tight correlations between forest parameters and backscattering coefficient derived by the L-band airborne SAR (PiSAR). | Manabu Watanabe, Masanobu Shimada, Ake Rosenqvist, Shakil Ahmad Romshoo, Kazuo Ohta, Takeo Tadono, Masayuki Matsuoka, Ryoichi Furuta |
| 2003 | CRYPTO | Efficient Universal Padding Techniques for Multiplicative Trapdoor One-Way Permutation. | Yuichi Komano, Kazuo Ohta |
| 2001 | CCS | Accountable-subgroup multisignatures: extended abstract. | Silvio Micali, Kazuo Ohta, Leonid Reyzin |
| 1998 | CRYPTO | On Concrete Security Treatment of Signatures Derived from Identification. | Kazuo Ohta, Tatsuaki Okamoto |
| 1997 | ICICS | On strict estimation method of provable security against differential and linear cryptanalysis. | Yasuyoshi Kaneko, Shiho Moriai, Kazuo Ohta |
| 1995 | CRYPTO | Improving the Search Algorithm for the Best Linear Expression. | Kazuo Ohta, Shiho Moriai, Kazumaro Aoki |
| 1994 | CCS | How to Simultaneously Exchange Secrets by General Assumptions. | Tatsuaki Okamoto, Kazuo Ohta |
| 1994 | CRYPTO | Linear Cryptanalysis of the Fast Data Encipherment Algorithm. | Kazuo Ohta, Kazumaro Aoki |
| 1993 | CRYPTO | Differential Attack on Message Authentication Codes. | Kazuo Ohta, Mitsuru Matsui |
| 1992 | ASIACRYPT | A Practical Secret Voting Scheme for Large Scale Elections. | Atsushi Fujioka, Tatsuaki Okamoto, Kazuo Ohta |
| 1992 | EuroCrypt | Secure Bit Commitment Function against Divertibility. | Kazuo Ohta, Tatsuaki Okamoto, Atsushi Fujioka |
| 1991 | ASIACRYPT | Results of Switching-Closure-Test on FEAL (Extended Abstract). | Hikaru Morita, Kazuo Ohta, Shoji Miyaguchi |
| 1991 | ASIACRYPT | A Digital Multisignature Scheme Based on the Fiat-Shamir Scheme. | Kazuo Ohta, Tatsuaki Okamoto |
| 1991 | CRYPTO | A Switching Closure Test to Analyze Cryptosystems. | Hikaru Morita, Kazuo Ohta, Shoji Miyaguchi |
| 1991 | CRYPTO | Universal Electronic Cash. | Tatsuaki Okamoto, Kazuo Ohta |
| 1991 | EuroCrypt | Interactive Bi-Proof Systems and Undeniable Signature Schemes. | Atsushi Fujioka, Tatsuaki Okamoto, Kazuo Ohta |
| 1991 | EuroCrypt | Direct Zero Knowledge Proofs of Computational Power in Five Rounds. | Tatsuaki Okamoto, David Chaum, Kazuo Ohta |
| 1990 | ASIACRYPT | Meet-in-the-Middle Attack on Digital Signature Schemes. | Kazuo Ohta, Kenji Koyama |
| 1990 | CRYPTO | How to Utilize the Randomness of Zero-Knowledge Proofs. | Tatsuaki Okamoto, Kazuo Ohta |
| 1990 | EuroCrypt | Confirmation that Some Hash Functions Are Not Collision Free. | Shoji Miyaguchi, Kazuo Ohta, Masahiko Iwata |
| 1990 | EuroCrypt | Membership Authentication for Hierarchical Multigroups Using the Extended Fiat-Shamir Scheme. | Kazuo Ohta, Tatsuaki Okamoto, Kenji Koyama |
| 1989 | CRYPTO | Disposable Zero-Knowledge Authentications and Their Applications to Untraceable Electronic Cash. | Tatsuaki Okamoto, Kazuo Ohta |
| 1989 | EuroCrypt | Divertible Zero Knowledge Interactive Proofs and Commutative Random Self-Reducibility. | Tatsuaki Okamoto, Kazuo Ohta |
| 1988 | CRYPTO | A Modification of the Fiat-Shamir Scheme. | Kazuo Ohta, Tatsuaki Okamoto |
| 1988 | EuroCrypt | Security of Improved Identity-Based Conference Key Distribution Systems. | Kenji Koyama, Kazuo Ohta |
| 1987 | CRYPTO | Identity-based Conference Key Distribution Systems. | Kenji Koyama, Kazuo Ohta |