Research Achievements - Original paper -

Blind Decryption and Private Information Delivery

Akihiro Yamamura

Communications in Computer and Information Science   1644   165 - 179   2023.07  [Refereed]

Research paper (journal)   Single author

DOI

Decentralised renewable electricity certificates using smart meters and blockchain

Yuki Sato, Szilard Zsolt Fazekas, Akihiro Yamamura

LNNS (International Congress on Information and Communication Technology)   693   983 - 990   2023.07  [Refereed]

Research paper (journal)  

DOI

Selection Strategy of F4-Style Algorithm to Solve MQ Problems Related to MPKC

Takashi Kurokawa , Takuma Ito , Naoyuki Shinohara , Akihiro Yamamura , Shigenori Uchiyama

Cryptography ( Cryptography )  7 ( 1 )   2023.04  [Refereed]

Research paper (journal)   Domestic Co-author

DOI DOI2

Latin Hexahedra and Related Combinatorial Structures

Akihiro Yamamura

CALDAM 2023, LNCS, Springer-Verlag ( Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) )  13947   351 - 362   2023.02  [Refereed]

Research paper (journal)   Single author

DOI

Two-Way Jumping Automata

Szilard Zsolt Fazekas, Kaito Hoshi, Akihiro Yamamura

FAW 2020, LNCS, Springer-Verlag   12340   108 - 120   2020.10  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Groupoid Action and Rearrangement Problem of Bicolor Arrays by Prefix Reversals

Akihiro Yamamura, Riki Kase, and Tatiana B. Jajcayova

CSR 2020, LNCS, Springer-Verlag   12159   419 - 431   2020.07  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Enhancement of Automata with Jumping Modes

Szilard Zsolt Fazekas, Kaito Hoshi, Akihiro Yamamura

AUTOMATA 2019, LNCS, Springer-Verlag ( Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) )  11525   62 - 76   2019.06  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Rearrangement Problem of Multidimensional Arrays by Prefix Reversals

Akihiro Yamamura

Electronic Proceedings in Theoretical Computer Science   252   9 - 10   2017.09  [Invited]

Research paper (journal)   Single author

Application of the firefly algorithm to the uncapacitated facility location problem

Kohei Tsuya, Mayumi Takaya, Akihiro Yamamura

Journal of Intelligent & Fuzzy Systems   32 ( 4 ) 3201 - 3208   2017.03  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Spined Product Decompositions of Orthocryptogroups

Akihiro Yamamura

Springer Proceedings in Mathematics & Statistics   174   31 - 44   2016.11  [Refereed]  [Invited]

Research paper (journal)   Single author

DOI

One-Way Jumping Finite Automata

Hiroyuki Chigahara, Szilard Zsolt Fazekas, Akihiro Yamamura

International Journal of Foundations of Computer Science   27 ( 3 ) 391 - 405   2016.06  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Rearranging Two Dimensional Arrays by Prefix Reversals

Akihiro Yamamura

RP 2015, LNCS, Springer-Verlag   9328   153 - 165   2015.01  [Refereed]

Research paper (journal)   Single author

Comparative Study of Monte-Carlo Tree Search and Alpha-Beta Pruning in Amazons

Hikari Kato, Szilard Zsolt Fazekas, Mayumi Takaya, Akihiro Yamamura

ICT-EurAsia/CONFENIS 2015, LNCS, Springer-Verlag   9357   139 - 148   2015.01  [Refereed]

Research paper (journal)   Domestic Co-author

Fitness Function in ABC Algorithm for Uncapacitated Facility Location Problem

Yusuke Watanabe, Mayumi Takaya, Akihiro Yamamura

ICT-EurAsia/CONFENIS 2015, LNCS, Springer-Verlag   9357   129 - 138   2015.01  [Refereed]

Research paper (journal)   Domestic Co-author

Analysis of a Monte Carlo Tree Search in Knight-Amazons

H.Kato, M.Takaya, A.Yamamura

Procedia Computer Science   62   31 - 38   2015.01  [Refereed]

Research paper (journal)   Domestic Co-author

CAPTCHA Suitable for Smartphones

Yusuke Tsuruta, Mayumi Takaya, Akihiro Yamamura

ICT-EurAsia 2013, LNCS, Springer-Verlag   7804   554 - 563   2014.01  [Refereed]

Research paper (journal)   Domestic Co-author

Security Analysis of Public Key Encryptions Based on Conjugacy Search Problem

Akihiro Yamamura

ICT-EurAsia 2014, LNCS, Springer-Verlag   8407   2014.01  [Refereed]

Research paper (journal)   Single author

Certificate-based proxy decryption systems with revocability in the standard model

Lihua Wang, Jun Shao, Zhenfu Cao, Masahiro Mambo, Akihiro Yamamura, Licheng Wang

Information Sciences   247   188 - 201   2013.01  [Refereed]

Research paper (journal)   Domestic Co-author

Reverse Turing Test using Touchscreens and CAPTCHA

M. Takaya, Y. Tsuruta, A. Yamamura

Journal of Wireless Mobile Networks, Ubiquitous Computing, and Dependable Applications   4 ( 3 ) 41 - 57   2013.01  [Refereed]  [Invited]

Research paper (journal)   Domestic Co-author

Recognition of One-Stroke Symbols by Humans and Computers

M.Takaya, H. Kato, T. Komatsubara, Y. Watanabe, A. Yamamura

Procedia - Social and Behavioral Sciences   97   2013.01  [Refereed]

Research paper (journal)   Domestic Co-author

More efficient threshold signature scheme in gap Diffie-Hellman group

D.Nyang, A.Yamamura

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E92-A   1720 - 1723   2009.01  [Refereed]

Research paper (journal)   International Co-author

Quasicrystals and Tiling Semigroups

Akihiro Yamamura

ICMR 2009, CD Proceedings     183 - 188   2009.01

Research paper (journal)  

Updating Quantum Cryptography Report ver. 1

Donna Dodson, Mikio Fujiwara, Philippe Grangier, Masahito Hayashi, Kentaro Imafuku, Ken-ichi Kitayama, Prem Kumar, Christian Kurtsiefer, Gaby Lenhart, Norbert Luetkenhaus, Tsutomu Matsumoto, William J. Munro, Tsuyoshi Nishioka, Momtchil Peev, Masahide Sasaki, Yutaka Sata, Atsushi Takada, Masahiro Takeoka, Kiyoshi Tamaki, Hidema Tanaka, Yasuhiro Tokura, Akihisa Tomita, Morio Toyoshima, Rodney van Meter, Atsuhiro Yamagishi, Yoshihisa Yamamoto, Akihiro Yamamura

arXiv:0905.4325     2009.01

Research paper (journal)  

Classification of hash functions suitable for real-life systems

Y.Hirai, T.Kurokawa, S.Matsuo, H.Tanaka, A.Yamamura

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E91-A   64 - 73   2008.01

Research paper (journal)  

Current status of Japanese government PKI systems

Yasuo Miyakawa, Takashi Kurokawa, Akihiro Yamamura, Yasushi Matsumoto

EuroPKI 2008, LNCS, Springer-Verlag   5057   104 - 117   2008.01

Research paper (journal)  

Mechanism of homomorphic encryptions

A.Yamamura

数理解析研究所講究録   1604   31 - 36   2008.01

Research paper (journal)  

Privacy enhancing credentials

J.Nakazato, L.Wang, A.Yamamura

ASIAN2007, LNCS, Springer-Verlag,   4846   55 - 61   2007.01

Research paper (journal)  

Threshold anonymous group identification and zero-knowledge proof

A.Yamamura, T.Kurokawa, J.Nakazato

ACISP2007, LNCS, Springer-Verlag   4586   370   2007.01

Research paper (journal)  

Homomorphic encryptions of sums of groups

A.Yamamura

AAECC 2007, LNCS, Springer-Verlag   4851   357 - 366   2007.01

Research paper (journal)  

Asymmetric secret key ciphers and encrypted data retrieval schemes

A.Yamamura

数理解析研究所講究録   1562   2007.01

Research paper (journal)  

Embedding theorem for HNN extensions of inverse semigroups

A.Yamamura

Journal of Pure and Applied Algebra   210   521   2007.01

Research paper (journal)  

A certificate-based proxy cryptosystem with revocable proxy decryption power

L.Wang, J.Shao, Z.Cao, M.Mambo, A.Yamamura

Indocrypt 2007, LNCS, Springer-Verlag   4859   297 - 311   2007.01

Research paper (journal)  

Graph methods in inverse semigroups

数理解析研究所講究録   1503   64 - 69   2006.01

Research paper (journal)  

Classification of hash functions suitable for real-life systems

Y.Hirai, T.Kurokawa, S.Matsuo, H.Tanaka, A.Yamamura

Second Cryptographic Hash Workshop CD proceedeings     40558   2006.01

Research paper (journal)  

Schutzenberger graphs and embedding theorems

A.Yamamura

数理解析研究所講究録   1437   59 - 65   2005.01

Research paper (journal)  

Homomorphic encryption functions and cryptographic protocols

A.Yamamura, T.Kurokawa, T.Jajcayova

数理解析研究所講究録   1437   97 - 106   2005.01

Research paper (journal)  

Oblivious transfer and private information retrieval based on the p-subgroup assumption

A.Yamamura, T,Jajcayova, T.Kurokawa

SOFSEM 2005 Communications, Slovak Society for Computer Science     101 - 110   2005.01

Research paper (journal)  

A trial of the interception of display image using emanation of electromagnetic wave

H.Tanaka, O.Takizawa, A.Yamamura

Journal of the National Institute of Information and Communications Technology   52   213 - 223   2005.01

Research paper (journal)  

Secret sharing scheme using natural language text

O.Takizawa, K.Makino, A.Yamamura

Journal of the National Institute of Information and Communications Technology   52   173 - 183   2005.01

Research paper (journal)  

Error detection and authentication in quantum key destribution

A.Yamamura, Hirokazu Ishizuka

Journal of the National Institute of Information and Communications Technology   52   141 - 151   2005.01

Research paper (journal)  

A functional cryptosystem using a group action

A.Yamamura

Journal of the National Institute of Information and Communications Technology   52   101   2005.01

Research paper (journal)  

Sungroup membership problem and its applications to infromation security

A.Yamamura, T.Saito

Journal of the National Institute of Information and Communications Technology   52   89 - 99   2005.01

Research paper (journal)  

Anonymous password-based authenticated key exchange

D.Q.Viet, A.Yamamura, H.Tanaka

Indocrypt 2005, LNCS, Springer-Verlag   3797   244 - 257   2005.01

Research paper (journal)  

Evaluation and Improvement of the TEMPEST Fonts

H.Tanaka, O.Takizawa, A.Yamamura

WISA2004, LNCS, Springer-Verlag   3325   457 - 469   2004.01

Research paper (journal)  

A class of inverse monoids acting on ordered forests

Akihiro Yamamura

Journal of Algebra   281   15 - 67   2004.01  [Refereed]

Research paper (journal)   Single author

DOI

Subgroup membership problems and applications to information security

A.Yamamura, T.Saito

Scientiae Mathematicae Japonicae   57   25 - 41   2003.01

Research paper (journal)  

A key agreement protocol securer than DLOG

Akihiro Yamamura, Kaoru Kurosawa

International Conference on Words, Languages and Combinatorics III, World Scientific ( World Scientific )    450 - 465   2003.01  [Refereed]

Research paper (journal)   Domestic Co-author

DOI

Formal language theoretical approach to secret sharing schemes

O.Takizawa, A.Yamamura

数理解析研究所講究録   1268   40 - 46   2002.01

Research paper (journal)  

Embedding theorems for groups presented via partial automorphisms

A.Yamamura

Third International Algebraic Conference in the Ukraine, Natsional. Akad. Nauk Ukrani, Inst. Mat., Kiev     364 - 376   2002.01

Research paper (journal)  

Embedding theorems for groups presented via partial automorphisms: A generalization of semidirect products and HNN extensions

Akihiro Yamamura

International Journal of Algebra and Computations   12   51 - 84   2002.01  [Refereed]

Research paper (journal)   Single author

DOI

The decision Diffie-Hellman assumption and the quadratic residuosity assumption

T.Saito, T.Koshiba, A.Yamamura

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences   E84-A   165 - 171   2001.01

Research paper (journal)  

Error detection and authentication in quantum key distribution

A.Yamamura, H.Ishizuka

ACISP2001, LNCS, Springer-Verlag   2119   2001.01

Research paper (journal)  

Private information retrieval based on the subgroup membership problem

A.Yamamura, T.Saito

ACISP2001, LNCS, Springer-Verlag   2119   206 - 220   2001.01

Research paper (journal)  

Subgroup membership problems ans its applications to information security

A.Yamamura

数理解析研究所講究録   1222   64   2001.01

Research paper (journal)  

Van Kampen diagrams and E-unitary coextensions

A.Yamamura

数理解析研究所講究録   1222   74 - 82   2001.01

Research paper (journal)  

Presentations of Bruck-Reilly extensions and decision problems

A.Yamamura

Semigroup Forum   62   79 - 97   2001.01  [Refereed]

Research paper (journal)   Single author

DOI

Locally full HNN extensions of inverse semigroups

A.Yamamura

Journal of Australian Mathematics Society   70   235 - 272   2001.01

Research paper (journal)  

Generic algorithms and key agreement protocols based on group actions

A.Yamamura, K.Kurosawa

ISAAC2001, LNCS, Springer-Verlag   2223   208 - 218   2001.01

Research paper (journal)  

Quantum cryptoanalysis of block ciphers

A.Yamamura, H.Ishizuka

数理解析研究所講究録   1166   235 - 243   2000.01

Research paper (journal)  

A functional cryptosystem using a group action

A.Yamamura

ACISP99, LNCS, Springer-Verlag   1578   314 - 325   1999.01

Research paper (journal)  

HNN extensions of finite semilattices

A.Yamamura

数理解析研究所講究録   1106   1999.01

Research paper (journal)  

HNN extensions of semilattices

Akihiro Yamamura

International Journal of Algebra and Computations   9   555 - 596   1999.01  [Refereed]

Research paper (journal)   Single author

DOI

Bass-Serre theory and inverse monoids

J.Meakin, A.Yamamura

Semigroups and Applications, World Scientific     125   1998.01

Research paper (journal)  

Public-key cryptosystems using the modular group

A.Yamamura

PKC98, LNCS, Springer-Verlag   1431   1998.01

Research paper (journal)  

HNN extensions of inverse semigroups and applications

Akihiro Yamamura

International Journal of Algebra and Computations   7   605 - 624   1997.01  [Refereed]

Research paper (journal)   Single author

DOI