Hideki Imai

Manabu Inuma, Akira Otsuka, Hideki Imai: A Theoretical Framework for Constructing Matching Algorithms Secure against Wolf Attack. IEICE Transactions 96-D(2): 357-364 (2013)

Chen Yuan, Haibin Kan, Xin Wang, Hideki Imai: A construction method of matroidal networks. SCIENCE CHINA Information Sciences 55(11): 2445-2453 (2012)

Masakazu Yoshida, Manabu Hagiwara, Takayuki Miyadera, Hideki Imai: A Numerical Evaluation of Entanglement Sharing Protocols Using Quantum LDPC CSS Codes. IEICE Transactions 95-A(9): 1561-1569 (2012)

Miodrag J. Mihaljevic, Sugata Gangopadhyay, Goutam Paul, Hideki Imai: Internal state recovery of grain-v1 employing normality order of the filter function. IET Information Security 6(2): 55-64 (2012)

Miodrag J. Mihaljevic, Sugata Gangopadhyay, Goutam Paul, Hideki Imai: Internal state recovery of keystream generator LILI-128 based on a novel weakness of the employed Boolean function. Inf. Process. Lett. 112(21): 805-810 (2012)

Miodrag J. Mihaljevic, Sugata Gangopadhyay, Goutam Paul, Hideki Imai: Generic cryptographic weakness of k-normal Boolean functions in certain stream ciphers and cryptanalysis of grain-128. Periodica Mathematica Hungarica 65(2): 205-227 (2012)

Kenta Kasai, Manabu Hagiwara, Hideki Imai, Kohichi Sakaniwa: Quantum Error Correction Beyond the Bounded Distance Decoding Limit. IEEE Transactions on Information Theory 58(2): 1223-1230 (2012)

Manabu Hagiwara, Marc P. C. Fossorier, Hideki Imai: Fixed Initialization Decoding of LDPC Codes Over a Binary Symmetric Channel. IEEE Transactions on Information Theory 58(4): 2321-2329 (2012)

Kohei Kasamatsu, Takahiro Matsuda, Goichiro Hanaoka, Hideki Imai: Ciphertext Policy Multi-dimensional Range Encryption. ICISC 2012: 247-261

Masakazu Yoshida, Takayuki Miyadera, Hideki Imai: Quantum key distribution using Mean King problem with modified measurement schemes. ISITA 2012: 317-321

Xuedi Song, Kazukuni Kobara, Kentaro Imafuku, Hideki Imai: HB^♭ protocol for lightweight authentication; Its information theoretic indistinguishability against MITM attack watching reader's response. ISITA 2012: 536-540

Kohei Kasamatsu, Takahiro Matsuda, Keita Emura, Nuttapong Attrapadung, Goichiro Hanaoka, Hideki Imai: Time-Specific Encryption from Forward-Secure Encryption. SCN 2012: 184-204

Rafael Dowsley, Jörn Müller-Quade, Akira Otsuka, Goichiro Hanaoka, Hideki Imai, Anderson C. A. Nascimento: Universally Composable and Statistically Secure Verifiable Secret Sharing Scheme Based on Pre-Distributed Data. IEICE Transactions 94-A(2): 725-734 (2011)

Arisa Fujii, Go Ohtake, Goichiro Hanaoka, Nuttapong Attrapadung, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: Secure Broadcast System with Simultaneous Individual Messaging. IEICE Transactions 94-A(6): 1328-1337 (2011)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Threshold Anonymous Password-Authenticated Key Exchange Secure against Insider Attacks. IEICE Transactions 94-D(11): 2095-2110 (2011)

Miodrag J. Mihaljevic, Hideki Imai, Michael David, Kazukuni Kobara, Hajime Watanabe: On advanced cryptographic techniques for information security of smart grid AMI. CSIIRW 2011: 64

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A secure public cloud storage system. ICITST 2011: 103-109

Manabu Hagiwara, Kenta Kasai, Hideki Imai, Kohichi Sakaniwa: Spatially coupled quasi-cyclic quantum LDPC codes. ISIT 2011: 638-642

Kenta Kasai, Manabu Hagiwara, Hideki Imai, Kohichi Sakaniwa: Non-binary quasi-cyclic quantum LDPC codes. ISIT 2011: 653-657

Hideki Imai, Atsuhiro Yamagishi: CRYPTREC (Japanese Cryptographic Algorithm Evaluation Project). Encyclopedia of Cryptography and Security (2nd Ed.) 2011: 285-288

Manabu Hagiwara, Kenta Kasai, Hideki Imai, Kohichi Sakaniwa: Spatially Coupled Quasi-Cyclic Quantum LDPC Codes. CoRR abs/1102.3181 (2011)

Masayuki Abe, Yang Cui, Hideki Imai, Eike Kiltz: Efficient hybrid encryption from ID-based encryption. Des. Codes Cryptography 54(3): 205-240 (2010)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Anonymous Password-Authenticated Key Exchange: New Construction and Its Extensions. IEICE Transactions 93-A(1): 102-115 (2010)

Nuttapong Attrapadung, Hideki Imai: Dual-Policy Attribute Based Encryption: Simultaneous Access Control with Ciphertext and Key Policies. IEICE Transactions 93-A(1): 116-125 (2010)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: An RSA-Based Leakage-Resilient Authenticated Key Exchange Protocol Secure against Replacement Attacks, and Its Extensions. IEICE Transactions 93-A(6): 1086-1101 (2010)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Security Analysis of Two Augmented Password-Authenticated Key Exchange Protocols. IEICE Transactions 93-A(11): 2092-2095 (2010)

Alexandra Boldyreva, Hideki Imai, Kazukuni Kobara: How to Strengthen the Security of RSA-OAEP. IEEE Transactions on Information Theory 56(11): 5876-5886 (2010)

Hanane Fathi, SeongHan Shin, Kazukuni Kobara, Hideki Imai: Purpose-restricted Anonymous Mobile Communications Using Anonymous Signatures in Online Credential Systems. Wireless Personal Communications 54(1): 225-236 (2010)

Jin Tamura, Kazukuni Kobara, Hanane Fathi, Hideki Imai: A Note on a Fatal Error of Optimized LFC Private Information Retrieval Scheme and Its Corrected Results. Financial Cryptography Workshops 2010: 47-56

Tomohiro Sekino, Yang Cui, Kazukuni Kobara, Hideki Imai: Privacy Enhanced RFID Using Quasi-Dyadic Fix Domain Shrinking. GLOBECOM 2010: 1-5

Rei Yoshida, Yang Cui, Tomohiro Sekino, Rie Shigetomi, Akira Otsuka, Hideki Imai: Practical Searching over Encrypted Data by Private Information Retrieval. GLOBECOM 2010: 1-5

Manabu Hagiwara, Marc P. C. Fossorier, Hideki Imai: LDPC codes with fixed initialization decoding over binary symmetric channel. ISIT 2010: 784-788

Yasunori Onda, SeongHan Shin, Kazukuni Kobara, Hideki Imai: How to distinguish on-line dictionary attacks and password mis-typing in two-factor authentication. ISITA 2010: 571-576

Miodrag J. Mihaljevic, Hajime Watanabe, Hideki Imai: A low complexity authentication protocol based on pseudorandomness, randomness and homophonic coding. ISITA 2010: 690-695

Miodrag J. Mihaljevic, Hideki Imai: A Security evaluation of certain stream ciphers which involve randomness and coding. ISITA 2010: 789-794

Miodrag J. Mihaljevic, Sugata Gangopadhyay, Goutam Paul, Hideki Imai: A generic weakness of the k-normal Boolean functions exposed to dedicated algebraic attack. ISITA 2010: 911-916

Masakazu Yoshida, Takayuki Miyadera, Hideki Imai: On the security of the quantum key distribution using the Mean King Problem. ISITA 2010: 917-912

Rafael Dowsley, Goichiro Hanaoka, Hideki Imai, Anderson C. A. Nascimento: Round-Optimal Deniable Ring Authentication in the Presence of Big Brother. WISA 2010: 307-321

Akira Otsuka, Hideki Imai: Unconditionally Secure Electronic Voting. Towards Trustworthy Elections 2010: 107-123

Kenta Kasai, Manabu Hagiwara, Hideki Imai, Kohichi Sakaniwa: Quantum Error Correction beyond the Bounded Distance Decoding Limit. CoRR abs/1007.1778 (2010)

Miodrag J. Mihaljevic, Frédérique E. Oggier, Hideki Imai: Homophonic Coding Design for Communication Systems Employing the Encoding-Encryption Paradigm. CoRR abs/1012.5895 (2010)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Security Proof of AugPAKE. IACR Cryptology ePrint Archive 2010: 334 (2010)

Miodrag J. Mihaljevic, Hideki Imai: An approach for stream ciphers design based on joint computing over random and secret data. Computing 85(1-2): 153-168 (2009)

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: An improvement of discrete Tardos fingerprinting codes. Des. Codes Cryptography 52(3): 339-362 (2009)

Masayuki Abe, Yang Cui, Hideki Imai, Kaoru Kurosawa: Tag-KEM from Set Partial Domain One-Way Permutations. IEICE Transactions 92-A(1): 42-52 (2009)

Yang Cui, Eiichiro Fujisaki, Goichiro Hanaoka, Hideki Imai, Rui Zhang: Formal Security Treatments for IBE-to-Signature Transformation: Relations among Security Notions. IEICE Transactions 92-A(1): 53-66 (2009)

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Hideki Imai, Takashi Kitagawa, Kazuto Ogawa, Hajime Watanabe: An Efficient 2-Secure and Short Random Fingerprint Code and Its Security Evaluation. IEICE Transactions 92-A(1): 197-206 (2009)

José Carrijo, Rafael Tonicelli, Hideki Imai, Anderson C. A. Nascimento: A Novel Probabilistic Passive Attack on the Protocols HB and HB⁺. IEICE Transactions 92-A(2): 658-662 (2009)

Huanfei Ma, Haibin Kan, Hideki Imai: A New Quaternion Design for Space-Time-Polarization Block Code with Full Diversity. IEICE Transactions 92-B(2): 671-674 (2009)

Go Ohtake, Kazuto Ogawa, Goichiro Hanaoka, Hideki Imai: A Trade-off Traitor Tracing Scheme. IEICE Transactions 92-D(5): 859-875 (2009)

Rui Zhang, Hideki Imai: Combining Public Key Encryption with Keyword Search and Public Key Encryption. IEICE Transactions 92-D(5): 888-896 (2009)

Yang Cui, Goichiro Hanaoka, Hideki Imai: CCA-Secure Public Key Encryption without Group-Dependent Hash Functions. IEICE Transactions 92-D(5): 967-970 (2009)

Rui Zhang, Hideki Imai: Strong Anonymous Signature. IEICE Transactions 92-A(10): 2487-2491 (2009)

Manabu Hagiwara, Marc P. C. Fossorier, Takashi Kitagawa, Hideki Imai: Smallest Size of Circulant Matrix for Regular (3, L) and (4, L) Quasi-Cyclic LDPC Codes with Girth 6. IEICE Transactions 92-A(11): 2891-2894 (2009)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Very-Efficient Anonymous Password-Authenticated Key Exchange and Its Extensions. AAECC 2009: 149-158

Yang Cui, Kirill Morozov, Kazukuni Kobara, Hideki Imai: Efficient Constructions of Deterministic Encryption from Hybrid Encryption and Code-Based PKE. AAECC 2009: 159-168

Manabu Hagiwara, Takahiro Yoshida, Hideki Imai: Bounds on the Number of Users for Random 2-Secure Codes. AAECC 2009: 239-242

Nuttapong Attrapadung, Hideki Imai: Dual-Policy Attribute Based Encryption. ACNS 2009: 168-185

Rui Zhang, Goichiro Hanaoka, Hideki Imai: A generic construction of useful client puzzles. ASIACCS 2009: 70-79

Rui Zhang, Hideki Imai: Constructing Better KEMs with Partial Message Recovery. Inscrypt 2009: 303-312

Yoshihiro Kojima, Rie Shigetomi, Manabu Inuma, Akira Otsuka, Hideki Imai: A Matching Algorithm Secure against the Wolf Attack in Biometric Authentication Systems. COST 2101/2102 Conference 2009: 293-300

Takahiro Matsuda, Goichiro Hanaoka, Kanta Matsuura, Hideki Imai: An Efficient Encapsulation Scheme from Near Collision Resistant Pseudorandom Generators and Its Application to IBE-to-PKE Transformations. CT-RSA 2009: 16-31

Manabu Inuma, Akira Otsuka, Hideki Imai: Theoretical Framework for Constructing Matching Algorithms in Biometric Authentication Systems. ICB 2009: 806-815

Yang Cui, Mingmei Li, Kazuya Yokoyama, Hideki Imai: Efficient and Adaptively Secure Append-Only Signature. ICC 2009: 1-5

Masatoshi Noguchi, Manabu Inuma, Rie Shigetomi, Hideki Imai: An Image Sanitizing Scheme Using Digital Watermarking. ICICS 2009: 474-482

Nuttapong Attrapadung, Hideki Imai: Attribute-Based Encryption Supporting Direct/Indirect Revocation Modes. IMA Int. Conf. 2009: 278-300

Peng Yang, Rui Zhang, Kanta Matsuura, Hideki Imai: Generic Construction of Stateful Identity Based Encryption. ISC 2009: 338-346

Nuttapong Attrapadung, Hideki Imai: Conjunctive Broadcast and Attribute-Based Encryption. Pairing 2009: 248-265

Shigenori Yamakawa, Yang Cui, Kazukuni Kobara, Hideki Imai: Lightweight broadcast authentication protocols reconsidered. WCNC 2009: 3076-3081

Manabu Inuma, Akira Otsuka, Hideki Imai: Theoretical framework for constructing matching algorithms in biometric authentication systems. CoRR abs/0904.1284 (2009)

Rafael Tonicelli, Rafael Dowsley, Goichiro Hanaoka, Hideki Imai, Jörn Müller-Quade, Akira Otsuka, Anderson C. A. Nascimento: Information-Theoretically Secure Oblivious Polynomial Evaluation in the Commodity-Based Model. IACR Cryptology ePrint Archive 2009: 270 (2009)

Rafael Dowsley, Goichiro Hanaoka, Hideki Imai, Anderson C. A. Nascimento: Reducing the Ciphertext Size of Dolev-Dwork-Naor like Public Key Cryptosystems. IACR Cryptology ePrint Archive 2009: 271 (2009)

Rafael Dowsley, Jörn Müller-Quade, Akira Otsuka, Goichiro Hanaoka, Hideki Imai, Anderson C. A. Nascimento: Universally Composable and Statistically Secure Verifiable Secret Sharing Scheme Based on Pre-Distributed Data. IACR Cryptology ePrint Archive 2009: 273 (2009)

Hideki Imai, Manabu Hagiwara: Error-correcting codes and cryptography. Appl. Algebra Eng. Commun. Comput. 19(3): 213-228 (2008)

Hanane Fathi, SeongHan Shin, Kazukuni Kobara, Hideki Imai: Protocols for purpose-restricted anonymous communications in IP-based wireless networks. Computer Communications 31(15): 3662-3671 (2008)

Ryo Nojima, Hideki Imai, Kazukuni Kobara, Kirill Morozov: Semantic security for the McEliece cryptosystem without random oracles. Des. Codes Cryptography 49(1-3): 289-305 (2008)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Secure Authenticated Key Exchange Protocol for Credential Services. IEICE Transactions 91-A(1): 139-149 (2008)

Kazukuni Kobara, Hideki Imai: IVs to Skip for Immunizing WEP against FMS Attack. IEICE Transactions 91-B(1): 164-171 (2008)

Kunihiko Miyazaki, Goichiro Hanaoka, Hideki Imai: Invisibly Sanitizable Digital Signature Scheme. IEICE Transactions 91-A(1): 392-402 (2008)

Masashi Une, Akira Otsuka, Hideki Imai: Wolf Attack Probability: A Theoretical Security Measure in Biometric Authentication Systems. IEICE Transactions 91-D(5): 1380-1389 (2008)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: RSA-Based Password-Authenticated Key Exchange, Revisited. IEICE Transactions 91-D(5): 1424-1438 (2008)

Yang Cui, Kazukuni Kobara, Kanta Matsuura, Hideki Imai: Lightweight Privacy-Preserving Authentication Protocols Secure against Active Attack in an Asymmetric Way. IEICE Transactions 91-D(5): 1457-1465 (2008)

Takahiro Matsuda, Nuttapong Attrapadung, Goichiro Hanaoka, Kanta Matsuura, Hideki Imai: A Strongly Unforgeable Signature under the CDH Assumption without Collision Resistant Hash Functions. IEICE Transactions 91-D(5): 1466-1476 (2008)

SeongHan Shin, Hanane Fathi, Kazukuni Kobara, Neeli R. Prasad, Hideki Imai: A New Security Architecture for Personal Networks and Its Performance Evaluation. IEICE Transactions 91-B(7): 2255-2264 (2008)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Secure Construction for Threshold Anonymous Password-Authenticated Key Exchange. IEICE Transactions 91-A(11): 3312-3324 (2008)

Valery I. Korzhik, Hideki Imai, Junji Shikata, Guillermo Morales-Luna, Ekaterina Gerling: On the Use of Bhattacharyya Distance as a Measure of the Detectability of Steganographic Systems. T. Data Hiding and Multimedia Security 3: 23-32 (2008)

Hideki Imai, Goichiro Hanaoka, Ueli M. Maurer, Yuliang Zheng: Introduction to the Special Issue on Information Theoretic Security. IEEE Transactions on Information Theory 54(6): 2405-2407 (2008)

Anderson C. A. Nascimento, João Barros, Stefan Skludarek, Hideki Imai: The Commitment Capacity of the Gaussian Channel Is Infinite. IEEE Transactions on Information Theory 54(6): 2785-2789 (2008)

Rui Zhang, Hideki Imai: Strong Anonymous Signatures. Inscrypt 2008: 60-71

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A security framework for personal networks. COMSWARE 2008: 682-690

Hisashi Oguma, Akira Yoshioka, Makoto Nishikawa, Rie Shigetomi, Akira Otsuka, Hideki Imai: New Attestation Based Security Architecture for In-Vehicle Communication. GLOBECOM 2008: 1909-1914

Huanfei Ma, Qinghui Lan, Haibin Kan, Hideki Imai: A Novel Quaternion Design Construction For STBC. ICC 2008: 2791-2795

Takahiro Matsuda, Goichiro Hanaoka, Kanta Matsuura, Hideki Imai: Simple CCA-Secure Public Key Encryption from Any Non-Malleable Identity-Based Encryption. ICISC 2008: 1-19

Goichiro Hanaoka, Hideki Imai, Kazuto Ogawa, Hajime Watanabe: Chosen Ciphertext Secure Public Key Encryption with a Simple Structure. IWSEC 2008: 20-33

Sihan Qing, Hideki Imai, Guilin Wang (Eds.): Information and Communications Security, 9th International Conference, ICICS 2007, Zhengzhou, China, December 12-15, 2007, Proceedings. Lecture Notes in Computer Science 4861, Springer 2008, isbn 978-3-540-77047-3

José Carrijo, Rafael Tonicelli, Hideki Imai, Anderson C. A. Nascimento: A Novel Probabilistic Passive Attack on the Protocols HB and HB+. IACR Cryptology ePrint Archive 2008: 231 (2008)

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: An improvement of discrete Tardos fingerprinting codes. IACR Cryptology ePrint Archive 2008: 338 (2008)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Secure Threshold Anonymous Password-Authenticated Key Exchange Protocol. IACR Cryptology ePrint Archive 2008: 537 (2008)

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Security evaluation of certain broadcast encryption schemes employing a generalized time-memory-data trade-off. IEEE Communications Letters 11(12): 988-990 (2007)

Nuttapong Attrapadung, Hideki Imai: Practical Broadcast Encryption from Graph-Theoretic Techniques and Subset-Incremental-Chain Structure. IEICE Transactions 90-A(1): 187-203 (2007)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: An Efficient and Leakage-Resilient RSA-Based Authenticated Key Exchange Protocol with Tight Security Reduction. IEICE Transactions 90-A(2): 474-490 (2007)

Kazuto Ogawa, Goichiro Hanaoka, Hideki Imai: Traitor Tracing Scheme Secure against Adaptive Key Exposure and its Application to Anywhere TV Service. IEICE Transactions 90-A(5): 1000-1011 (2007)

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Birthday Paradox Based Security Analysis of Certain Broadcast Encryption Schemes. IEICE Transactions 90-A(6): 1248-1251 (2007)

Nuttapong Attrapadung, Jun Furukawa, Takeshi Gomi, Goichiro Hanaoka, Hideki Imai, Rui Zhang: Efficient Identity-Based Encryption with Tight Security Reduction. IEICE Transactions 90-A(9): 1803-1813 (2007)

Thi Lan Anh Phan, Goichiro Hanaoka, Kanta Matsuura, Hideki Imai: Key-Insulated Public Key Encryption with Auxiliary Helper Key: Model, Constructions and Formal Security Proofs. IEICE Transactions 90-A(9): 1814-1829 (2007)

Kazuto Ogawa, Goichiro Hanaoka, Hideki Imai: Extension of Broadcasting Service by Using Electronic Tokens. IEICE Transactions 90-D(11): 1741-1750 (2007)

Marc P. C. Fossorier, Kazukuni Kobara, Hideki Imai: Modeling Bit Flipping Decoding Based on Nonorthogonal Check Sums With Application to Iterative Decoding Attack of McEliece Cryptosystem. IEEE Transactions on Information Theory 53(1): 402-411 (2007)

Marc P. C. Fossorier, Miodrag J. Mihaljevic, Hideki Imai: Modeling Block Decoding Approaches for the Fast Correlation Attack. IEEE Transactions on Information Theory 53(12): 4728-4737 (2007)

Koji Nuida, Satoshi Fujitsu, Manabu Hagiwara, Takashi Kitagawa, Hajime Watanabe, Kazuto Ogawa, Hideki Imai: An Improvement of Tardos's Collusion-Secure Fingerprinting Codes with Very Short Lengths. AAECC 2007: 80-89

Shigenori Yamakawa, Yang Cui, Kazukuni Kobara, Manabu Hagiwara, Hideki Imai: On the Key-Privacy Issue of McEliece Public-Key Encryption. AAECC 2007: 168-177

Ronald Cramer, Goichiro Hanaoka, Dennis Hofheinz, Hideki Imai, Eike Kiltz, Rafael Pass, Abhi Shelat, Vinod Vaikuntanathan: Bounded CCA2-Secure Encryption. ASIACRYPT 2007: 502-518

Rui Zhang, Hideki Imai: Generic Combination of Public Key Encryption with Keyword Search and Public Key Encryption. CANS 2007: 159-174

Rui Zhang, Goichiro Hanaoka, Hideki Imai: Orthogonality between Key Privacy and Data Privacy, Revisited. Inscrypt 2007: 313-327

Jun Furukawa, Hideki Imai: An Efficient Aggregate Shuffle Argument Scheme. Financial Cryptography 2007: 260-274

Makoto Sugita, Mitsuru Kawazoe, Ludovic Perret, Hideki Imai: Algebraic Cryptanalysis of 58-Round SHA-1. FSE 2007: 349-365

Masashi Une, Akira Otsuka, Hideki Imai: Wolf Attack Probability: A New Security Measure in Biometric Authentication Systems. ICB 2007: 396-406

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai: Optimization of Tardos's Fingerprinting Codes in a Viewpoint of Memory Amount. Information Hiding 2007: 279-293

Kazuto Ogawa, Go Ohtake, Goichiro Hanaoka, Hideki Imai: Trade-Off Traitor Tracing. INDOCRYPT 2007: 331-340

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Secure Threshold Anonymous Password-Authenticated Key Exchange Protocol. IWSEC 2007: 444-458

Takahiro Matsuda, Goichiro Hanaoka, Kanta Matsuura, Hideki Imai: A Practical Provider Authentication System for Bidirectional Broadcast Service. KES (3) 2007: 967-974

Kazuto Ogawa, Goichiro Hanaoka, Kazukuni Kobara, Kanta Matsuura, Hideki Imai: Anonymous Pay-TV System with Secure Revenue Sharing. KES (3) 2007: 984-991

Yang Cui, Kazukuni Kobara, Kanta Matsuura, Hideki Imai: Lightweight Asymmetric Privacy-Preserving Authentication Protocols Secure against Active Attack. PerCom Workshops 2007: 223-228

Takahiro Matsuda, Nuttapong Attrapadung, Goichiro Hanaoka, Kanta Matsuura, Hideki Imai: A CDH-Based Strongly Unforgeable Signature Without Collision Resistant Hash Function. ProvSec 2007: 68-84

Yang Cui, Eiichiro Fujisaki, Goichiro Hanaoka, Hideki Imai, Rui Zhang: Formal Security Treatments for Signatures from Identity-Based Encryption. ProvSec 2007: 218-227

Rei Yoshida, Rie Shigetomi, Kazuki Yoshizoe, Akira Otsuka, Hideki Imai: A Privacy Protection Scheme for a Scalable Control Method in Context-Dependent Services. WEWoRC 2007: 1-12

Toru Hashimoto, Takashi Itoh, Masazumi Ueba, Hisato Iwai, Hideichi Sasaoka, Kazukuni Kobara, Hideki Imai: Comparative Studies in Key Disagreement Correction Process on Wireless Key Agreement System. WISA 2007: 173-187

Masayuki Abe, Yang Cui, Hideki Imai, Eike Kiltz: Efficient Hybrid Encryption from ID-Based Encryption. IACR Cryptology ePrint Archive 2007: 23 (2007)

Yang Cui, Eiichiro Fujisaki, Goichiro Hanaoka, Hideki Imai, Rui Zhang: Formal Security Treatments for IBE-to-Signature Transformation: Relations among Security Notions. IACR Cryptology ePrint Archive 2007: 30 (2007)

Goichiro Hanaoka, Junji Shikata, Yumiko Hanaoka, Hideki Imai: Unconditionally Secure Anonymous Encryption and Group Authentication. Comput. J. 49(3): 310-321 (2006)

Makoto Sugita, Mitsuru Kawazoe, Hideki Imai: Relation between the XL Algorithm and Gröbner Basis Algorithms. IEICE Transactions 89-A(1): 11-18 (2006)

Masayuki Abe, Hideki Imai: Flaws in Robust Optimistic Mix-Nets and Stronger Security Notions. IEICE Transactions 89-A(1): 99-105 (2006)

Tetsutaro Kobayashi, Kazumaro Aoki, Hideki Imai: Efficient Algorithms for Tate Pairing. IEICE Transactions 89-A(1): 134-143 (2006)

Abdulrahman Alharby, Hideki Imai: Security Protocols Protection Based on Anomaly Detection. IEICE Transactions 89-D(1): 189-200 (2006)

Jun Furukawa, Hideki Imai: An Efficient Group Signature Scheme from Bilinear Maps. IEICE Transactions 89-A(5): 1328-1338 (2006)

Rie Shigetomi, Akira Otsuka, Jun Furukawa, Keith Martin, Hideki Imai: A Provably Secure Refreshable Partially Anonymous Token and Its Applications. IEICE Transactions 89-A(5): 1396-1406 (2006)

Kazukuni Kobara, Hideki Imai: Key-Dependent Weak IVs and Weak Keys in WEP - How to Trace Conditions Back to Their Patterns - . IEICE Transactions 89-A(8): 2198-2206 (2006)

Hanane Fathi, SeongHan Shin, Kazukuni Kobara, Shyam S. Chakraborty, Hideki Imai, Ramjee Prasad: LR-AKE-Based AAA for Network Mobility (NEMO) Over Wireless Links. IEEE Journal on Selected Areas in Communications 24(9): 1725-1737 (2006)

Goichiro Hanaoka, Yumiko Hanaoka, Manabu Hagiwara, Hajime Watanabe, Hideki Imai: Unconditionally Secure Chaffing-and-Winnowing: A Relationship Between Encryption and Authentication. AAECC 2006: 154-162

Yang Cui, Kazukuni Kobara, Hideki Imai: On Achieving Chosen Ciphertext Security with Decryption Errors. AAECC 2006: 173-182

Peng Yang, Takashi Kitagawa, Goichiro Hanaoka, Rui Zhang, Kanta Matsuura, Hideki Imai: Applying Fujisaki-Okamoto to Identity-Based Encryption. AAECC 2006: 183-192

Manabu Hagiwara, Goichiro Hanaoka, Hideki Imai: A Short Random Fingerprinting Code Against a Small Number of Pirates. AAECC 2006: 193-202

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: A General Formulation of Algebraic and Fast Correlation Attacks Based on Dedicated Sample Decimation. AAECC 2006: 203-214

Kazuto Ogawa, Goichiro Hanaoka, Hideki Imai: Adaptively Secure Traitor Tracing Against Key Exposure and Its Application to Anywhere TV Service. ACISP 2006: 123-135

Takashi Kitagawa, Peng Yang, Goichiro Hanaoka, Rui Zhang, Hajime Watanabe, Kanta Matsuura, Hideki Imai: Generic Transforms to Acquire CCA-Security for Identity Based Encryption: The Cases of FOpkc and REACT. ACISP 2006: 348-359

Masayuki Abe, Yang Cui, Hideki Imai, Kaoru Kurosawa: Tag-KEM from Set Partial Domain One-Way Permutations. ACISP 2006: 360-370

Jian Wang, Miodrag J. Mihaljevic, Lein Harn, Hideki Imai: A Hierarchical Key Management Approach for Secure Multicast. ARCS 2006: 422-434

Nuttapong Attrapadung, Jun Furukawa, Hideki Imai: Forward-Secure and Searchable Broadcast Encryption with Short Ciphertexts and Private Keys. ASIACRYPT 2006: 161-177

Nuttapong Attrapadung, Jun Furukawa, Takeshi Gomi, Goichiro Hanaoka, Hideki Imai, Rui Zhang: Efficient Identity-Based Encryption with Tight Security Reduction. CANS 2006: 19-36

Kunihiko Miyazaki, Goichiro Hanaoka, Hideki Imai: Digitally signed document sanitizing scheme based on bilinear maps. ASIACCS 2006: 343-354

SeongHan Shin, Kazukuni Kobara, Hideki Imai: An Elliptic Curve Based Authenticated Key Agreement Protocol for Wireless Security. CIS 2006: 767-777

SeongHan Shin, Hanane Fathi, Mohamed Imine, Kazukuni Kobara, Neeli R. Prasad, Hideki Imai: A New Security Architecture for Personal Networks. GLOBECOM 2006

Jun Furukawa, Kaoru Kurosawa, Hideki Imai: An Efficient Compiler from Sigma-Protocol to 2-Move Deniable Zero-Knowledge. ICALP (2) 2006: 46-57

Tatsuyuki Matsushita, Hideki Imai: Hierarchical Key Assignment for Black-Box Tracing with Efficient Ciphertext Size. ICICS 2006: 92-111

Marc P. C. Fossorier, Miodrag J. Mihaljevic, Hideki Imai, Yang Cui, Kanta Matsuura: An Algorithm for Solving the LPN Problem and Its Application to Security Evaluation of the HB Protocols for RFID Authentication. INDOCRYPT 2006: 48-62

Ryo Nojima, Kazukuni Kobara, Hideki Imai: Efficient Shared-Key Authentication Scheme from Any Weak Pseudorandom Function. INDOCRYPT 2006: 303-316

SeongHan Shin, Kazukuni Kobara, Hideki Imai: An Authentication and Key Exchange Protocol for Secure Credential Services. ISC 2006: 443-458

Nuttapong Attrapadung, Yang Cui, David Galindo, Goichiro Hanaoka, Ichiro Hasuo, Hideki Imai, Kanta Matsuura, Peng Yang, Rui Zhang: Relations Among Notions of Security for Identity Based Encryption Schemes. LATIN 2006: 130-141

SeongHan Shin, Mohamed Imine, Hanane Fathi, Kazukuni Kobara, Neeli R. Prasad, Hideki Imai: A Leakage-Resilient and Forward-Secure Authenticated Key Exchange Protocol for Private Personal Area Networks. PIMRC 2006: 1-5

Goichiro Hanaoka, Yumiko Hanaoka, Hideki Imai: Parallel Key-Insulated Public Key Encryption. Public Key Cryptography 2006: 105-122

Akira Otsuka, Rie Shigetomi, Hideki Imai: Lightweight Privacy for Ubiquitous Devices. SMC 2006: 1233-1237

Masataka Suzuki, Kazukuni Kobara, Hideki Imai: Privacy Enhanced and Light Weight RFID System without Tag Synchronization and Exhaustive Search. SMC 2006: 1250-1255

Hanane Fathi, SeongHan Shin, Kazukuni Kobara, Hideki Imai: Next Wireless Security Architecture for MJPv6. SMC 2006: 1256-1261

Thi Lan Anh Phan, Yumiko Hanaoka, Goichiro Hanaoka, Kanta Matsuura, Hideki Imai: Reducing the Spread of Damage of Key Exposures in Key-Insulated Encryption. VIETCRYPT 2006: 366-384

Marc P. C. Fossorier, Hideki Imai, Shu Lin, Alain Poli (Eds.): Applied Algebra, Algebraic Algorithms and Error-Correcting Codes, 16th International Symposium, AAECC-16, Las Vegas, NV, USA, February 20-24, 2006, Proceedings. Lecture Notes in Computer Science 3857, Springer 2006, isbn 3-540-31423-7

Koji Nuida, Manabu Hagiwara, Hajime Watanabe, Hideki Imai: Optimal probabilistic fingerprinting codes using optimal finite random variables related to numerical quadrature. CoRR abs/cs/0610036 (2006)

Makoto Sugita, Mitsuru Kawazoe, Hideki Imai: Gröbner Basis Based Cryptanalysis of SHA-1. IACR Cryptology ePrint Archive 2006: 98 (2006)

Marc P. C. Fossorier, Miodrag J. Mihaljevic, Hideki Imai, Yang Cui, Kanta Matsuura: A Novel Algorithm for Solving the LPN Problem and its Application to Security Evaluation of the HB Protocol for RFID Authentication. IACR Cryptology ePrint Archive 2006: 197 (2006)

Goichiro Hanaoka, Hideki Imai: A Generic Construction of CCA-Secure Cryptosystems without NIZKP for a Bounded Number of Decryption Queries. IACR Cryptology ePrint Archive 2006: 408 (2006)

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Key management with minimized secret storage employing an erasure channel approach. IEEE Communications Letters 9(8): 741-743 (2005)

Kunihiko Miyazaki, Mitsuru Iwamura, Tsutomu Matsumoto, Ryôichi Sasaki, Hiroshi Yoshiura, Satoru Tezuka, Hideki Imai: Digitally Signed Document Sanitizing Scheme with Disclosure Condition Control. IEICE Transactions 88-A(1): 239-246 (2005)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Simple Leakage-Resilient Authenticated Key Establishment Protocol, Its Extensions, and Applications. IEICE Transactions 88-A(3): 736-754 (2005)

Tatsuyuki Matsushita, Hideki Imai: A Flexible-Revocation Scheme for Efficient Public-Key Black-Box Traitor Tracing. IEICE Transactions 88-A(4): 1055-1062 (2005)

JaeGwi Choi, Goichiro Hanaoka, KyungHyune Rhee, Hideki Imai: How to Break COT-Based Fingerprinting Schemes and Design New One. IEICE Transactions 88-A(10): 2800-2807 (2005)

Hanane Fathi, SeongHan Shin, Kazukuni Kobara, Shyam S. Chakraborty, Hideki Imai, Ramjee Prasad: Leakage-resilient security architecture for mobile IPv6 in wireless overlay networks. IEEE Journal on Selected Areas in Communications 23(11): 2182-2193 (2005)

Hideki Imai, Jörn Müller-Quade, Anderson C. A. Nascimento, Pim Tuyls, Andreas Winter: An information theoretical model for quantum secret sharing. Quantum Information & Computation 5(1): 69-80 (2005)

Jun Furukawa, Hideki Imai: An Efficient Group Signature Scheme from Bilinear Maps. ACISP 2005: 455-467

Abdulrahman Alharby, Hideki Imai: IDS False Alarm Reduction Using Continuous and Discontinuous Patterns. ACNS 2005: 192-205

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Efficient and Leakage-Resilient Authenticated Key Transport Protocol Based on RSA. ACNS 2005: 269-284

Rui Zhang, Jun Furukawa, Hideki Imai: Short Signature and Universal Designated Verifier Signature Without Random Oracles. ACNS 2005: 483-498

Nuttapong Attrapadung, Hideki Imai: Graph-Decomposition-Based Frameworks for Subset-Cover Broadcast Encryption and Efficient Instantiations. ASIACRYPT 2005: 100-120

Yumiko Hanaoka, Goichiro Hanaoka, Junji Shikata, Hideki Imai: Identity-Based Hierarchical Strongly Key-Insulated Encryption and Its Application. ASIACRYPT 2005: 495-514

Haruhiro Yoshimoto, Rie Shigetomi, Hideki Imai: How to Protect Peer-to-Peer Online Games from Cheats. CIG 2005

Rui Zhang, Hideki Imai: Improvements on Security Proofs of Some Identity Based Encryption Schemes. CISC 2005: 28-41

Yang Cui, Kazukuni Kobara, Hideki Imai: A Generic Conversion with Optimal Redundancy. CT-RSA 2005: 104-117

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Security Weaknesses of Certain Broadcast Encryption Schemes. DRMTICS 2005: 228-245

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: A Novel Broadcast Encryption Based on Time-Bound Cryptographic Keys. DRMTICS 2005: 258-276

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Lower-Bound of Complexity for RSA-Based Password-Authenticated Key Exchange. EuroPKI 2005: 191-205

Hanane Fathi, Kazukuni Kobara, Shyam S. Chakraborty, Hideki Imai, Ramjee Prasad: On the impact of security on latency in WLAN 802.11b. GLOBECOM 2005: 5

Jian Wang, Lein Harn, Hideki Imai: Key Management for Multicast Fingerprinting. ICISS 2005: 191-204

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Simplified Leakage-Resilient Authenticated Key Exchange Protocol with Optimal Memory Size. ICN (2) 2005: 944-952

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Cryptanalysis of Keystream Generator by Decimated Sample Based Algebraic and Fast Correlation Attacks. INDOCRYPT 2005: 155-168

Abdulrahman Alharby, Hideki Imai: Hybrid Intrusion Detection Model Based on Ordered Sequences. MMM-ACNS 2005: 352-365

Hideki Imai: Trends and Challenges for Securer Cryptography in Practice. Mycrypt 2005: 1

Hideki Imai, SeongHan Shin, Kazukuni Kobara: Authenticated key exchange for wireless security. WCNC 2005: 1180-1186

SeongHan Shin, Kazukuni Kobara, Hideki Imai: A Secure Network Storage System with Information Privacy. WEWoRC 2005: 22-31

Hideki Imai, Atsuhiro Yamagishi: Cryptrec. Encyclopedia of Cryptography and Security 2005

Kazuto Ogawa, Goichiro Hanaoka, Hideki Imai: A Secure Traitor Tracing Scheme against Key Exposure. CoRR abs/cs/0508011 (2005)

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Time-Data-Memory Trade-Off Based Cryptanalysis of Certain Broadcast Encryption Schemes. IACR Cryptology ePrint Archive 2005: 99 (2005)

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Security Proof of "Efficient and Leakage-Resilient Authenticated Key Transport Protocol Based on RSA". IACR Cryptology ePrint Archive 2005: 190 (2005)

Nuttapong Attrapadung, Yang Cui, Goichiro Hanaoka, Hideki Imai, Kanta Matsuura, Peng Yang, Rui Zhang: Relations Among Notions of Security for Identity Based Encryption Schemes. IACR Cryptology ePrint Archive 2005: 258 (2005)

Nuttapong Attrapadung, Benoît Chevallier-Mames, Jun Furukawa, Takeshi Gomi, Goichiro Hanaoka, Hideki Imai, Rui Zhang: Efficient Identity-Based Encryption with Tight Security Reduction. IACR Cryptology ePrint Archive 2005: 320 (2005)

Goichiro Hanaoka, Junji Shikata, Yuliang Zheng, Hideki Imai: Efficient Unconditionally Secure Digital Signatures. IEICE Transactions 87-A(1): 120-130 (2004)

Goichiro Hanaoka, Kazuto Ogawa, Itsuro Murota, Go Ohtake, Keigo Majima, Seiichi Gohshi, Kimiyuki Oyamada, Seiichi Namba, Hideki Imai: Managing Encryption and Key Publication Independently in Digital Rights Management Systems. IEICE Transactions 87-A(1): 160-172 (2004)

Motohiko Isaka, Marc P. C. Fossorier, Hideki Imai: On the suboptimality of iterative decoding for turbo-like and LDPC codes with cycles in their graph representation. IEEE Transactions on Communications 52(5): 845-854 (2004)

Tadashi Minowa, Hideki Ochiai, Hideki Imai: Phase-noise effects on turbo trellis-coded over M-ary coherent channels. IEEE Transactions on Communications 52(8): 1333-1343 (2004)

Goichiro Hanaoka, Hideki Imai, Jörn Müller-Quade, Anderson C. A. Nascimento, Akira Otsuka, Andreas Winter: Information Theoretically Secure Oblivious Polynomial Evaluation: Model, Bounds, and Constructions. ACISP 2004: 62-73

Rui Zhang, Goichiro Hanaoka, Hideki Imai: On the Security of Cryptosystems with All-or-Nothing Transform. ACNS 2004: 76-90

Anderson C. A. Nascimento, Jörn Müller-Quade, Akira Otsuka, Goichiro Hanaoka, Hideki Imai: Unconditionally Non-interactive Verifiable Secret Sharing Secure against Faulty Majorities in the Commodity Based Model. ACNS 2004: 355-368

Tatsuyuki Matsushita, Hideki Imai: A Public-Key Black-Box Traitor Tracing Scheme with Sublinear Ciphertext Size Against Self-Defensive Pirates. ASIACRYPT 2004: 260-275

Gwénolé Ars, Jean-Charles Faugère, Hideki Imai, Mitsuru Kawazoe, Makoto Sugita: Comparison Between XL and Gröbner Basis Algorithms. ASIACRYPT 2004: 338-353

Anderson C. A. Nascimento, Jörn Müller-Quade, Hideki Imai: Bit String Commitment Reductions with a Non-zero Rate. CT-RSA 2004: 179-193

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Secret-Public Storage Trade-Off for Broadcast Encryption Key Management. ICICS 2004: 375-387

Rui Zhang, Goichiro Hanaoka, Junji Shikata, Hideki Imai: On the Security of Multiple Encryption or CCA-security+CCA-security=CCA-security? Public Key Cryptography 2004: 360-374

Miodrag J. Mihaljevic, Hideki Imai: The Decimated Sample Based Improved Algebraic Attacks on the Nonlinear Filters. SCN 2004: 310-323

Jin Tamura, Kazukuni Kobara, Hideki Imai, Ramjee Prasad: Application of trust-metrics for evaluating performance system in ad-hoc networks with privacy. WCNC 2004: 108-113

Mira Kim, Kazukuni Kobara, Hideki Imai: Dynamic Fingerprinting over Broadcast Using Revocation Scheme. WISA 2004: 251-263

Makoto Sugita, Mitsuru Kawazoe, Hideki Imai: Relation between XL algorithm and Gröbner Bases Algorithms. IACR Cryptology ePrint Archive 2004: 112 (2004)

Yumiko Hanaoka, Goichiro Hanaoka, Junji Shikata, Hideki Imai: Identity-Based Hierarchical Strongly Key-Insulated Encryption and Its Application. IACR Cryptology ePrint Archive 2004: 338 (2004)

Kazukuni Kobara, Hideki Imai: On the one-wayness against chosen-plaintext attacks of the Loidreau's modified McEliece PKC. IEEE Transactions on Information Theory 49(12): 3160-3168 (2003)

Anderson C. A. Nascimento, Akira Otsuka, Hideki Imai, Jörn Müller-Quade: Unconditionally Secure Homomorphic Pre-distributed Commitments. AAECC 2003: 87-97

Masayuki Abe, Hideki Imai: Flaws in Some Robust Optimistic Mix-Nets. ACISP 2003: 39-50

Goichiro Hanaoka, Kazuto Ogawa, Itsuro Murota, Go Ohtake, Keigo Majima, Kimiyuki Oyamada, Seiichi Gohshi, Seiichi Namba, Hideki Imai: Separating Encryption and Key Issuance in Digital Rights Management Systems. ACISP 2003: 365-376

Rui Zhang, Hideki Imai: Round Optimal Distributed Key Generation of Threshold Cryptosystem Based on Discrete Logarithm Problem. ACNS 2003: 96-110

SeongHan Shin, Kazukuni Kobara, Hideki Imai: Leakage-Resilient Authenticated Key Establishment Protocols. ASIACRYPT 2003: 155-172

Nuttapong Attrapadung, Kazukuni Kobara, Hideki Imai: Sequential Key Derivation Patterns for Broadcast Encryption and Key Predistribution Schemes. ASIACRYPT 2003: 374-391

Nuttapong Attrapadung, Kazukuni Kobara, Hideki Imai: Broadcast encryption with short keys and transmissions. Digital Rights Management Workshop 2003: 55-66

Yang Cui, Kazukuni Kobara, Hideki Imai: Compact Conversion Schemes for the Probabilistic OW-PCA Primitives. ICICS 2003: 269-279

Andreas Winter, Anderson C. A. Nascimento, Hideki Imai: Commitment Capacity of Discrete Memoryless Channels. IMA Int. Conf. 2003: 35-51

Anderson C. A. Nascimento, Jörn Müller-Quade, Akira Otsuka, Goichiro Hanaoka, Hideki Imai: Unconditionally Secure Homomorphic Pre-distributed Bit Commitment and Secure Two-Party Computations. ISC 2003: 151-164

Goichiro Hanaoka, Junji Shikata, Yumiko Hanaoka, Hideki Imai: The Role of Arbiters in Asymmetric Authentication Schemes. ISC 2003: 428-441

Yodai Watanabe, Junji Shikata, Hideki Imai: Equivalence between Semantic Security and Indistinguishability against Chosen Ciphertext Attacks. Public Key Cryptography 2003: 71-84

Rie Shigetomi, Akira Otsuka, Hideki Imai: Anonymous authentication scheme for XML security standard with Refreshable Tokens. XML Security 2003: 86-93

Andreas Winter, Anderson C. A. Nascimento, Hideki Imai: Commitment Capacity of Discrete Memoryless Channels. CoRR cs.CR/0304014 (2003)

Kazukuni Kobara, Hideki Imai: Pretty-Simple Password-Authenticated Key-Exchange Under Standard Assumptions. IACR Cryptology ePrint Archive 2003: 38 (2003)

Andreas Winter, Anderson C. A. Nascimento, Hideki Imai: Commitment Capacity of Discrete Memoryless Channels. IACR Cryptology ePrint Archive 2003: 165 (2003)

Rui Zhang, Goichiro Hanaoka, Junji Shikata, Hideki Imai: On the Security of Multiple Encryption or CCA-security+CCA-security=CCA-security? IACR Cryptology ePrint Archive 2003: 181 (2003)

Goichiro Hanaoka, Tsuyoshi Nishioka, Yuliang Zheng, Hideki Imai: A Hierarchical Non-interactive Key-Sharing Scheme with Low Memory Size and High Resistance against Collusion Attacks. Comput. J. 45(3): 293-303 (2002)

Hideki Ochiai, Hideki Imai: Performance analysis of deliberately clipped OFDM signals. IEEE Transactions on Communications 50(1): 89-101 (2002)

Mohammad Ghulam Rahman, Hideki Imai: Security in Wireless Communication. Wireless Personal Communications 22(2): 213-228 (2002)

Goichiro Hanaoka, Junji Shikata, Yumiko Hanaoka, Hideki Imai: Unconditionally Secure Anonymous Encryption and Group Authentication. ASIACRYPT 2002: 81-99

Junji Shikata, Goichiro Hanaoka, Yuliang Zheng, Hideki Imai: Security Notions for Unconditionally Secure Signature Schemes. EUROCRYPT 2002: 434-449

Motohiko Isaka, Marc P. C. Fossorier, Hideki Imai: Iterative reliability-based decoding of turbo-like codes. ICC 2002: 1495-1500

Kanta Matsuura, Hideki Imai: Digital Timestamps for Dispute Settlement in Electronic Commerce: Generation, Verification, and Renewal. ICEIS 2002: 962-967

Yumiko Hanaoka, Goichiro Hanaoka, Junji Shikata, Hideki Imai: Unconditionally Secure Key Insulated Cryptosystems: Models, Bounds and Constructions. ICICS 2002: 85-96

Rie Shigetomi, Akira Otsuka, Takahide Ogawa, Hideki Imai: An Anonymous Loan System Based on Group Signature Scheme. ISC 2002: 244-256

Shoko Yonezawa, Goichiro Hanaoka, Junji Shikata, Hideki Imai: Traceability Schemes for Signed Documents. ISC 2002: 257-271

Goichiro Hanaoka, Junji Shikata, Yuliang Zheng, Hideki Imai: Efficient and Unconditionally Secure Digital Signatures and a Security Analysis of a Multireceiver Authentication Code. Public Key Cryptography 2002: 64-79

Kazukuni Kobara, Hideki Imai: New Chosen-Plaintext Attacks on the One-Wayness of the Modified McEliece PKC Proposed at Asiacrypt 2000. Public Key Cryptography 2002: 237-251

Paul Camion, Miodrag J. Mihaljevic, Hideki Imai: Two Alerts for Design of Certain Stream Ciphers: Trapped LFSR and Weak Resilient Function over GF(q). Selected Areas in Cryptography 2002: 196-213

Yodai Watanabe, Junji Shikata, Hideki Imai: Equivalence between semantic security and indistinguishability against chosen ciphertext attacks. IACR Cryptology ePrint Archive 2002: 33 (2002)

Kazukuni Kobara, Hideki Imai: OAEP++ : A Very Simple Way to Apply OAEP to Deterministic OW-CPA Primitives. IACR Cryptology ePrint Archive 2002: 130 (2002)

Anderson C. A. Nascimento, Jörn Müller-Quade, Hideki Imai: Quantum Identification Protocol with Technologically Bounded Parties. Electronic Notes in Discrete Mathematics 6: 15-24 (2001)

Motohiko Isaka, Hideki Imai: On the iterative decoding of multilevel codes. IEEE Journal on Selected Areas in Communications 19(5): 935-943 (2001)

Hideki Ochiai, Hideki Imai: On the distribution of the peak-to-average power ratio in OFDM signals. IEEE Transactions on Communications 49(2): 282-289 (2001)

Makoto Sugita, Kazukuni Kobara, Hideki Imai: Security of Reduced Version of the Block Cipher Camellia against Truncated and Impossible Differential Cryptanalysis. ASIACRYPT 2001: 193-207

Yuji Watanabe, Goichiro Hanaoka, Hideki Imai: Efficient Asymmetric Public-Key Traitor Tracing without Trusted Agents. CT-RSA 2001: 392-407

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: Fast Correlation Attack Algorithm with List Decoding and an Application. FSE 2001: 196-210

Tadashi Minowa, Hideki Imai: Decoding of high-rate turbo codes using a syndrome trellis. ICC 2001: 74-78

Kazukuni Kobara, Hideki Imai: Semantically Secure McEliece Public-Key Cryptosystems-Conversions for McEliece PKC. Public Key Cryptography 2001: 19-35

Hirotaka Komaki, Yuji Watanabe, Goichiro Hanaoka, Hideki Imai: Efficient Asymmetric Self-Enforcement Scheme with Public Traceability. Public Key Cryptography 2001: 225-239

Jörn Müller-Quade, Hideki Imai: More Robust Multiparty Protocols with Oblivious Transfer. CoRR cs.CR/0101020 (2001)

Kazukuni Kobara, Hideki Imai: Pretty-Simple Password-Authenticated Key-Exchange Protocol. CoRR cs.CR/0110024 (2001)

Xian-Mo Zhang, Yuliang Zheng, Hideki Imai: Relating Differential Distribution Tables to Other Properties of of Substitution Boxes. Des. Codes Cryptography 19(1): 45-63 (2000)

Hideki Ochiai, Marc P. C. Fossorier, Hideki Imai: On decoding of block codes with peak-power reduction in OFDM systems. IEEE Communications Letters 4(7): 226-228 (2000)

Hideki Ochiai, Hideki Imai: Performance of the deliberate clipping with adaptive symbol selection for strictly band-limited OFDM systems. IEEE Journal on Selected Areas in Communications 18(11): 2270-2277 (2000)

Robert Morelos-Zaragoza, Marc P. C. Fossorier, Shu Lin, Hideki Imai: Multilevel coded modulation for unequal error protection and multistage decoding .I. Symmetric constellations. IEEE Transactions on Communications 48(2): 204-213 (2000)

Motohiko Isaka, Marc P. C. Fossorier, Robert Morelos-Zaragoza, Shu Lin, Hideki Imai: Multilevel coded modulation for unequal error protection and multistage decoding. II. Asymmetric constellations. IEEE Transactions on Communications 48(5): 774-786 (2000)

Makoto Sugita, Kazukuni Kobara, Kazuhiro Uehara, Shuji Kubota, Hideki Imai: Relationships among Differential, Truncated Differential, Impossible Differential Cryptanalyses against Word-Oriented Block Ciphers like RIJNDAEL, E2. AES Candidate Conference 2000: 242-254

Goichiro Hanaoka, Junji Shikata, Yuliang Zheng, Hideki Imai: Unconditionally Secure Digital Signature Schemes Admitting Transferability. ASIACRYPT 2000: 130-142

Hideki Imai, Atsuhiro Yamagishi: CRYPTREC Project - Cryptographic Evaluation Project for the Japanese Electronic Government. ASIACRYPT 2000: 399-400

Yuji Watanabe, Hideki Imai: Reducing the round complexity of a sealed-bid auction protocol with an off-line TTP. ACM Conference on Computer and Communications Security 2000: 80-86

Miodrag J. Mihaljevic, Marc P. C. Fossorier, Hideki Imai: A Low-Complexity and High-Performance Algorithm for the Fast Correlation Attack. FSE 2000: 196-212

Daisuke Nojiri, Goichiro Hanaoka, Hideki Imai: A Practical Implementation of Hierarchically Structured Key Predistribution System and Its Evaluation. ISW 2000: 224-236

Hideki Imai, Yuliang Zheng (Eds.): Public Key Cryptography, Third International Workshop on Practice and Theory in Public Key Cryptography, PKC 2000, Melbourne, Victoria, Australia, January 18-20, 2000, Proceedings. Lecture Notes in Computer Science 1751, Springer 2000, isbn 3-540-66967-1

Jörn Müller-Quade, Hideki Imai: Anonymous Oblivious Transfer. CoRR cs.CR/0011004 (2000)

Hideki Ochiai, Hideki Imai: Performance of OFDM-CDMA with Simple Peak Power Reduction. European Transactions on Telecommunications 10(4): 391-398 (1999)

Marc P. C. Fossorier, Miodrag J. Mihaljevic, Hideki Imai: Reduced complexity iterative decoding of low-density parity check codes based on belief propagation. IEEE Transactions on Communications 47(5): 673-680 (1999)

Yuliang Zheng, Xian-Mo Zhang, Hideki Imai: Restriction, Terms and Nonlinearity of Boolean Functions. Theor. Comput. Sci. 226(1-2): 207-223 (1999)

Marc P. C. Fossorier, Miodrag J. Mihaljevic, Hideki Imai: Critical Noise for Convergence of Iterative Probabilistic Decoding with Belief Propagation in Cryptographic Applications. AAECC 1999: 282-293

Junji Shikata, Yuliang Zheng, Joe Suzuki, Hideki Imai: Optimizing the Menezes-Okamoto-Vanstone (MOV) Algorithm for Non-supersingular Elliptic Curves. ASIACRYPT 1999: 86-102

Goichiro Hanaoka, Tsuyoshi Nishioka, Yuliang Zheng, Hideki Imai: An Efficient Hierarchical Identity-Based Key-Sharing Method Resistant against Collusion-Attacks. ASIACRYPT 1999: 348-362

Ryuichi Harasawa, Junji Shikata, Joe Suzuki, Hideki Imai: Comparing the MOV and FR Reductions in Elliptic Curve Cryptography. EUROCRYPT 1999: 190-205

Markus Breitbach, Hideki Imai: On Channel Capacity and Modulation of Watermarks in Digital Still Images. Financial Cryptography 1999: 125-139

Goichiro Hanaoka, Tsuyoshi Nishioka, Yuliang Zheng, Hideki Imai: Optimal Construction of Unconditionally Secure ID-Based Key Sharing Scheme for Large-Scale Networks. ICICS 1999: 157-168

Kazukuni Kobara, Hideki Imai: On the Channel Capacity of Narrow-Band Subliminal Channels. ICICS 1999: 309-323

Yuji Watanabe, Hideki Imai: Active Rebooting Method for Proactivized System: How to Enhance the Security against Latent Virus Attacks. ISW 1999: 118-135

Tsuyoshi Nishioka, Goichiro Hanaoka, Hideki Imai: A New Digital Signature Scheme on ID-Based Key-Sharing Infrastructures. ISW 1999: 259-270

Yuji Watanabe, Hideki Imai: Shared Generation of Random Number with Timestamp: How to Cope with the Leakage of the CA's Secret. Public Key Cryptography 1999: 290-305

Marc P. C. Fossorier, Hideki Imai, Shu Lin, Alain Poli (Eds.): Applied Algebra, Algebraic Algorithms and Error-Correcting Codes, 13th International Symposium, AAECC-13, Honolulu, Hawaii, USA, November 15-19, 1999, Proceedings. Lecture Notes in Computer Science 1719, Springer 1999, isbn 3-540-66723-7

Hideki Imai, Yuliang Zheng (Eds.): Public Key Cryptography, Second International Workshop on Practice and Theory in Public Key Cryptography, PKC '99, Kamakura, Japan, March 1-3, 1999, Proceedings. Lecture Notes in Computer Science 1560, Springer 1999, isbn 3-540-65644-8

Yuliang Zheng, Hideki Imai: How to Construct Efficient Signcryption Schemes on Elliptic Curves. Inf. Process. Lett. 68(5): 227-233 (1998)

Robert Morelos-Zaragoza, Tadao Kasami, Shu Lin, Hideki Imai: On block-coded modulation using unequal error protection codes over Rayleigh-fading channels. IEEE Transactions on Communications 46(1): 1-4 (1998)

Robert Morelos-Zaragoza, Hideki Imai: Binary multilevel convolutional codes with unequal error protection capabilities. IEEE Transactions on Communications 46(7): 850-853 (1998)

Goichiro Hanaoka, Yuliang Zheng, Hideki Imai: LITESET: A Light-Weight Secure Electronic Transaction Protocol. ACISP 1998: 215-226

Kazukuni Kobara, Hideki Imai: A successive carrier-transmission model for narrow-band subliminal channels. ICISC 1998: 179-187

Yuliang Zheng, Hideki Imai: Compact and Unforgeable Key Establishment over an ATM Network. INFOCOM 1998: 411-418

Miodrag J. Mihaljevic, Yuliang Zheng, Hideki Imai: A Cellular Automaton Based Fast One-Way Hash Function Suitable for Hardware Implementation. Public Key Cryptography 1998: 217-233

Kanta Matsuura, Yuliang Zheng, Hideki Imai: Compact and Flexible Resolution of CBT Multicast Key-Distribution. WWCA 1998: 190-205

Hideki Imai, Yuliang Zheng (Eds.): Public Key Cryptography, First International Workshop on Practice and Theory in Public Key Cryptography, PKC '98, Pacifico Yokohama, Japan, February 5-6, 1998, Proceedings. Lecture Notes in Computer Science 1431, Springer 1998, isbn 3-540-64693-0

Xian-Mo Zhang, Yuliang Zheng, Hideki Imai: Duality of Boolean functions and its cryptographic significance. ICICS 1997: 159-169

Kazukuni Kobara, Hideki Imai: Self-synchronized message randomization methods for subliminal channels. ICICS 1997: 325-334

P. CharnKeitKong, Hideki Imai, Kazuhiko Yamaguchi: On classes of rate k/(k+1) convolutional codes and their decoding techniques. IEEE Transactions on Information Theory 42(6): 2181-2193 (1996)

Kazukuni Kobara, Hideki Imai: Limiting the Visible Space Visual Secret Sharing Schemes and Their Application to Human Identification. ASIACRYPT 1996: 185-195

Ahmed Saifuddin, Ryuji Kohno, Hideki Imai: Integrated receiver structure of staged decoder and CCI canceller for CDMA with multilevel coded modulation. European Transactions on Telecommunications 6(1): 9-19 (1995)

Keiichi Iwamura, Yasunori Dohi, Hideki Imai: A Design of Reed-Solomon Decoder with Systolic Array Structure. IEEE Trans. Computers 44(1): 118-122 (1995)

Hideki Imai: Information Security Aspects of Spread Spectrum Systems. ASIACRYPT 1994: 193-208

Young C. Yoon, Ryuji Kohno, Hideki Imai: A Spread-Spectrum Multiaccess System with Cochannel Interference Cancellation for Multipath Fading Channels. IEEE Journal on Selected Areas in Communications 11(7): 1067-1075 (1993)

Yuichi Saitoh, Hideki Imai: Some Codes for Correcting and Detecting Unidirectional Byte Errors. IEEE Trans. Computers 42(5): 547-552 (1993)

Yuichi Saitoh, Hideki Imai: Generalized concatenated codes for channels where unidirectional byte errors are predominant. IEEE Transactions on Information Theory 39(3): 1014-1022 (1993)

Yuichi Saitoh, Ikuyo Ibe, Hideki Imai: Peak-Shift and Bit Error-Correction with Channel Side Information in Runlength-Limited Sequences. AAECC 1993: 304-315

Hideki Imai, Ronald L. Rivest, Tsutomu Matsumoto (Eds.): Advances in Cryptology - ASIACRYPT '91, International Conference on the Theory and Applications of Cryptology, Fujiyoshida, Japan, November 11-14, 1991, Proceedings. Lecture Notes in Computer Science 739, Springer 1993, isbn 3-540-57332-1

Tsutomu Matsumoto, Hideki Imai, Chi-Sung Laih, Sung-Ming Yen: On Verifiable Implicit Asking Protocols for RSA Computation. AUSCRYPT 1992: 296-307

Manuel Cerecedo, Tsutomu Matsumoto, Hideki Imai: Non-Interactive Generation of Shared Pseudorandom Sequences. AUSCRYPT 1992: 385-396

Keiichi Iwamura, Tsutomu Matsumoto, Hideki Imai: High-Speed Implementation Methods for RSA Scheme. EUROCRYPT 1992: 221-238

Keiichi Iwamura, Tsutomu Matsumoto, Hideki Imai: Systolic-Arrays for Modular Exponentiation Using Montgomery Method (Extended Abstract). EUROCRYPT 1992: 477-481

Ryuji Kohno, Hideki Imai: Combination of decoding of error-correcting codes and equalization for channels with intersymbol interference. Discrete Applied Mathematics 33(1-3): 129-146 (1991)

Yuichi Saitoh, Hideki Imai: Multiple unidirectional byte error-correcting codes. IEEE Transactions on Information Theory 37(3): 903-908 (1991)

Yuichi Saitoh, Hideki Imai: Random and Byte Error Correcting Codes for Asymmetric or Undirectional Error Control. AAECC 1991: 403-413

Chaosheng Shu, Tsutomu Matsumoto, Hideki Imai: A Multi-Purpose Proof System - for Identity and Membership Proofs. ASIACRYPT 1991: 397-411

Ryuji Kohno, Hideki Imai, Mitsutoshi Hatori, Subbarayan Pasupathy: Combination of an Adaptive Array Antenna and a Canceller of Interference for Direct-Sequence Spread-Spectrum Multiple-Access System. IEEE Journal on Selected Areas in Communications 8(4): 675-681 (1990)

Ryuji Kohno, Hideki Imai, Mitsutoshi Hatori, Subbarayan Pasupathy: An Adaptive Canceller of Cochannel Interference for Spread-Spectrum Multiple-Access Communication Networks in a Power Line. IEEE Journal on Selected Areas in Communications 8(4): 691-699 (1990)

Yuichi Saitoh, Kazuhiko Yamaguchi, Hideki Imai: Some new binary codes correcting asymmetric/unidirectional errors. IEEE Transactions on Information Theory 36(3): 645-647 (1990)

Kazuhiko Yamaguchi, Hideki Imai: Periodic Sequences for Absolute Type Shaft Encoders. AAECC 1990: 36-45

Yuichi Saitoh, Hideki Imai: Constructions of Codes Correcting Burst Asymmetric Errors. AAECC 1990: 59-70

Ryuji Kohno, Choonsik Yim, Hideki Imai: Trellis Coded Modulation Based on Time-Varying Mapping and Encoders for Utilitzing a Channel Intersymbol Interference. AAECC 1990: 132-143

Yuliang Zheng, Tsutomu Matsumoto, Hideki Imai: Duality between Two Cryptographic Primitives. AAECC 1990: 379-390

Yuliang Zheng, Tsutomu Matsumoto, Hideki Imai: Structural Properties of One-way Hash Functions. CRYPTO 1990: 285-302

Kwangjo Kim, Tsutomu Matsumoto, Hideki Imai: A Recursive Construction Method of S-boxes Satisfying Strict Avalanche Criterion. CRYPTO 1990: 564-574

Yuliang Zheng, Tsutomu Matsumoto, Hideki Imai: On the Construction of Block Ciphers Provably Secure and Not Relying on Any Unproved Hypotheses. CRYPTO 1989: 461-480

Yuliang Zheng, Tsutomu Matsumoto, Hideki Imai: Impossibility and Optimality Results on Constructing Pseudorandom Permutations (Extended Abstract). EUROCRYPT 1989: 412-422

Kazuhiko Yamaguchi, Hideki Imai: A Study on Imai-Hirakawa Trellis-Coded Modulation Schemes. AAECC 1988: 443-453

Tsutomu Matsumoto, Koki Kato, Hideki Imai: Speeding Up Secret Computations with Insecure Auxiliary Devices. CRYPTO 1988: 497-506

Tsutomu Matsumoto, Hideki Imai: Public Quadratic Polynominal-Tuples for Efficient Signature-Verification and Message-Encryption. EUROCRYPT 1988: 419-453

Hirokazu Okano, Hideki Imai: A Construction Method of High-Speed Decoders Using ROMS's for Bose-Chaudhuri-Hocquenghem and Reed-Solomon Codes. IEEE Trans. Computers 36(10): 1165-1171 (1987)

Hideki Imai, Tsutomu Matsumoto: Coding Theory and its Applications in Japan. AAECC 1987: 301-305

Tsutomu Matsumoto, Hideki Imai: On the Key Predistribution System: A Practical Solution to the Key Distribution Problem. CRYPTO 1987: 185-193