高島 克幸

研究成果

年別の研究成果 2002 2009 2011 2012 2013 2014 2015 2018 2019 2020 2022

• 26 Conference contribution
• 17 Article
• 3 Conference article
• 1 Chapter

年別の研究成果

年別の研究成果

検索結果

• 2022

  Compact FE for Unbounded Attribute-Weighted Sums for Logspace from SXDH

  Datta, P., Pal, T. & Takashima, K., 2022, Advances in Cryptology – ASIACRYPT 2022 - 28th International Conference on the Theory and Application of Cryptology and Information Security, 2022, Proceedings. Agrawal, S. & Lin, D. (eds.). Springer Science and Business Media Deutschland GmbH, p. 126-159 34 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 13791 LNCS).

  研究成果: Conference contribution

  • Encryption 100%
  • Weighted Sums 89%
  • Attribute 81%
  • Cryptography 70%
  • Simulation 21%
• 2021

  An Efficient Authenticated Key Exchange from Random Self-reducibility on CSIDH

  Kawashima, T., Takashima, K., Aikawa, Y. & Takagi, T., 2021, 23rd International Conference, 2020, Proceedings. Hong, D. (ed.). Springer Science and Business Media Deutschland GmbH, p. 58-84 27 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 12593 LNCS).

  研究成果: Conference contribution

  • Authenticated Key Exchange 100%
  • Key Exchange 27%
  • Isogeny 25%
  • Attack 19%
  • Security Proof 14%
  4 被引用数 (Scopus)

• Efficient attribute-based signatures for unbounded arithmetic branching programs

  Datta, P., Okamoto, T. & Takashima, K., 2021 1月 1, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. 1, p. 25-57 33 p.

  研究成果: Article › 査読

  Open Access

  • Branching Programs 100%
  • Attribute 70%
  • Policy 40%
  • Signature Scheme 39%
  • Hash functions 21%
  3 被引用数 (Scopus)
• 2020

  Decentralized attribute-based encryption and signatures

  Okamoto, T. & Takashima, K., 2020, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E103A, 1, p. 41-73 33 p.

  研究成果: Article › 査読

  Open Access

  • Decentralized 100%
  • Dynamic mechanical analysis 93%
  • Encryption 91%
  • Attribute 74%
  • Cryptography 63%
  11 被引用数 (Scopus)

• Expressive attribute-based encryption with constant-size ciphertexts from the decisional linear assumption

  Takashima, K., 2020, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E103A, 1, p. 74-106 33 p.

  研究成果: Article › 査読

  Open Access

  • Encryption 100%
  • Attribute 81%
  • Cryptography 70%
  • Sparse matrix 65%
  • Pairing 61%
  1 被引用数 (Scopus)

• Group Key Exchange from CSIDH and Its Application to Trusted Setup in Supersingular Isogeny Cryptosystems

  Moriya, T., Takashima, K. & Takagi, T., 2020, Information Security and Cryptology - 15th International Conference, Inscrypt 2019, Revised Selected Papers. Liu, Z. & Yung, M. (eds.). Springer, p. 86-98 13 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 12020 LNCS).

  研究成果: Conference contribution

  • Key Exchange 100%
  • Diffie-Hellman 92%
  • Isogeny 90%
  • Cryptosystem 81%
  • Cryptography 57%
  3 被引用数 (Scopus)

• Hybrid Meet-in-the-Middle Attacks for the Isogeny Path-Finding Problem

  Ikematsu, Y., Fukasaku, R., Kudo, M., Yasuda, M., Takashima, K. & Yokoyama, K., 2020 10月 5, APKC 2020 - Proceedings of the 7th ACM Workshop on ASIA Public-Key Cryptography, Co-located with AsiaCCS 2020. Association for Computing Machinery, Inc, p. 36-44 9 p. (APKC 2020 - Proceedings of the 7th ACM Workshop on ASIA Public-Key Cryptography, Co-located with AsiaCCS 2020).

  研究成果: Conference contribution

  • Quantum cryptography 100%
  • Cryptography 57%
  • Hardness 55%
  • Polynomials 54%

• Unbounded inner product functional encryption from bilinear maps

  Tomida, J. & Takashima, K., 2020 9月 1, In: Japan Journal of Industrial and Applied Mathematics. 37, 3, p. 723-779 57 p.

  研究成果: Article › 査読

  • Bilinear Map 100%
  • Encryption 84%
  • Scalar, inner or dot product 69%
  • Cryptography 59%
  • Polynomials 13%
  6 被引用数 (Scopus)
• 2019

  Efficient Attribute-Based Signatures for Unbounded Arithmetic Branching Programs

  Datta, P., Okamoto, T. & Takashima, K., 2019, Public-Key Cryptography – PKC 2019 - 22nd IACR International Conference on Practice and Theory of Public-Key Cryptography, Proceedings. Sako, K. & Lin, D. (eds.). Springer Verlag, p. 127-158 32 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11442 LNCS).

  研究成果: Conference contribution

  • Branching Programs 100%
  • Attribute 70%
  • Policy 40%
  • Signature Scheme 39%
  • Hash functions 21%
  10 被引用数 (Scopus)

• Fully Secure Functional Encryption with a Large Class of Relations from the Decisional Linear Assumption

  Okamoto, T. & Takashima, K., 2019 10月 1, In: Journal of Cryptology. 32, 4, p. 1491-1573 83 p.

  研究成果: Article › 査読

  Open Access

  • Encryption 100%
  • Cryptography 70%
  • Policy 31%
  • Scalar, inner or dot product 30%
  • Access Structure 30%
  3 被引用数 (Scopus)

• New assumptions on isogenous pairing groups with applications to attribute-based encryption

  Koshiba, T. & Takashima, K., 2019, Information Security and Cryptology – ICISC 2018 - 21st International Conference, Revised Selected Papers. Lee, K. (ed.). Springer Verlag, p. 3-19 17 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11396 LNCS).

  研究成果: Conference contribution

  • Encryption 100%
  • Pairing 92%
  • Attribute 81%
  • Cryptography 70%
  • Security Proof 21%
  1 被引用数 (Scopus)

• One-Round Authenticated Group Key Exchange from Isogenies

  Fujioka, A., Takashima, K. & Yoneyama, K., 2019, Provable Security - 13th International Conference, ProvSec 2019, Proceedings. Steinfeld, R. & Yuen, T. H. (eds.). Springer, p. 330-338 9 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11821 LNCS).

  研究成果: Conference contribution

  • Key Exchange 100%
  • Isogenies 98%
  • Random Oracle Model 48%
  • Diffie-Hellman 46%
  • Invariant 28%
  11 被引用数 (Scopus)

• Supersingular isogeny diffie–hellman authenticated key exchange

  Fujioka, A., Takashima, K., Terada, S. & Yoneyama, K., 2019, Information Security and Cryptology – ICISC 2018 - 21st International Conference, Revised Selected Papers. Lee, K. (ed.). Springer Verlag, p. 177-195 19 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11396 LNCS).

  研究成果: Conference contribution

  • Authenticated Key Exchange 100%
  • Diffie-Hellman 76%
  • Isogeny 75%
  • Isogenies 40%
  • Random Oracle Model 39%
  17 被引用数 (Scopus)
• 2018

  Adaptively Simulation-Secure Attribute-Hiding Predicate Encryption

  Datta, P., Okamoto, T. & Takashima, K., 2018, Advances in Cryptology – ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security, Proceedings. Peyrin, T. & Galbraith, S. (eds.). Springer Verlag, p. 640-672 33 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11273 LNCS).

  研究成果: Conference contribution

  • Encryption 100%
  • Attribute 81%
  • Cryptography 70%
  • Simulation 53%
  • Scalar, inner or dot product 34%
  8 被引用数 (Scopus)

• Multi-party Key Exchange Protocols from Supersingular Isogenies

  Furukawa, S., Kunihiro, N. & Takashima, K., 2018 7月 2, Proceedings of 2018 International Symposium on Information Theory and Its Applications, ISITA 2018. Institute of Electrical and Electronics Engineers Inc., p. 208-212 5 p. 8664316. (Proceedings of 2018 International Symposium on Information Theory and Its Applications, ISITA 2018).

  研究成果: Conference contribution

  • Quantum computers 100%
  • Hardness 56%
  • Cryptography 29%
  14 被引用数 (Scopus)

• Unbounded Inner Product Functional Encryption from Bilinear Maps

  Tomida, J. & Takashima, K., 2018, Advances in Cryptology – ASIACRYPT 2018 - 24th International Conference on the Theory and Application of Cryptology and Information Security, Proceedings. Peyrin, T. & Galbraith, S. (eds.). Springer Verlag, p. 609-639 31 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 11273 LNCS).

  研究成果: Conference contribution

  • Bilinear Map 100%
  • Encryption 84%
  • Scalar, inner or dot product 69%
  • Cryptography 59%
  • Polynomials 13%
  9 被引用数 (Scopus)
• 2017

  New proof techniques for DLIN-based adaptively secure attribute-based encryption

  Takashima, K., 2017, Information Security and Privacy - 22nd Australasian Conference, ACISP 2017, Proceedings. Pieprzyk, J. & Suriadi, S. (eds.). Springer Verlag, p. 85-105 21 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 10342 LNCS).

  研究成果: Conference contribution

  • Encryption 100%
  • Attribute 81%
  • Cryptography 70%
  • Secret Sharing 39%
  • Encoding 28%
  7 被引用数 (Scopus)
• 2016

  Adaptively attribute-hiding (hierarchical) inner product encryption

  Okamoto, T. & Takashima, K., 2016 1月, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E99A, 1, p. 92-117 26 p.

  研究成果: Article › 査読

  • Encryption 100%
  • Attribute 81%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Water 21%
  8 被引用数 (Scopus)
• 2015

  Achieving short ciphertexts or short secret-keys for adaptively secure general inner-product encryption

  Okamoto, T. & Takashima, K., 2015 12月 3, In: Designs, Codes, and Cryptography. 77, 2-3, p. 725-771 47 p.

  研究成果: Article › 査読

  Open Access

  • Encryption 100%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Standard Model 24%
  • Revocation 23%
  34 被引用数 (Scopus)

• Dual pairing vector spaces and their applications

  Okamoto, T. & Takashima, K., 2015 1月 1, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E98A, 1, p. 3-15 13 p.

  研究成果: Article › 査読

  • Encryption 100%
  • Pairing 92%
  • Vector spaces 87%
  • Vector space 73%
  • Cryptography 70%
  9 被引用数 (Scopus)

• Tighter security for efficient lattice cryptography via the rényi divergence of optimized orders

  Takashima, K. & Takayasu, A., 2015, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Springer Verlag, p. 412-431 20 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 9451).

  研究成果: Chapter

  • Cryptography 100%
  • Divergence 81%
  • Gaussian distribution 34%
  • Discrete Distributions 33%
  • Learning 27%
  8 被引用数 (Scopus)
• 2014

  Efficient attribute-based signatures for non-monotone predicates in the standard model

  Okamoto, T. & Takashima, K., 2014 10月 1, In: IEEE Transactions on Cloud Computing. 2, 4, p. 409-421 13 p., 6887292.

  研究成果: Article › 査読

  • Hash functions 100%
  29 被引用数 (Scopus)

• Expressive attribute-based encryption with constant-size ciphertexts from the decisional linear assumption

  Takashima, K., 2014, Security and Cryptography for Networks - 9th International Conference, SCN 2014, Proceedings. Abdalla, M. & de Prisco, R. (eds.). Springer Verlag, p. 298-317 20 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 8642).

  研究成果: Conference contribution

  • Encryption 100%
  • Vector spaces 87%
  • Attribute 81%
  • Cryptography 70%
  • Pairing 61%
  33 被引用数 (Scopus)

• Predicate- and attribute-hiding inner product encryption in a public key setting

  Kawai, Y. & Takashima, K., 2014, In: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 8365 LNCS, p. 113-130 18 p.

  研究成果: Conference article › 査読

  • Encryption 91%
  • Attribute 74%
  • Scalar, inner or dot product 74%
  • Cryptography 63%
  • Proof System 11%
  20 被引用数 (Scopus)

• Recent topics on practical functional encryption

  Takashima, K., 2014, Proceedings - 2014 2nd International Symposium on Computing and Networking, CANDAR 2014. Institute of Electrical and Electronics Engineers Inc., p. 21-27 7 p. 7052159. (Proceedings - 2014 2nd International Symposium on Computing and Networking, CANDAR 2014).

  研究成果: Conference contribution

  • Cryptography 100%
  • Data Sharing 15%
  • Vector spaces 13%
• 2013

  Computing a sequence of 2-isogenies on supersingular elliptic curves

  Yoshida, R. & Takashima, K., 2013 1月, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E96-A, 1, p. 158-165 8 p.

  研究成果: Article › 査読

  • Isogenies 100%
  • Elliptic Curves 65%
  • Torsion Points 47%
  • Isogeny 46%
  • Redundancy 39%
  4 被引用数 (Scopus)

• Decentralized attribute-based signatures

  Okamoto, T. & Takashima, K., 2013, Public-Key Cryptography, PKC 2013 - 16th International Conference on Practice and Theory in Public-Key Cryptography, Proceedings. p. 125-142 18 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 7778 LNCS).

  研究成果: Conference contribution

  Open Access

  • Decentralized 100%
  • Signature Scheme 98%
  • Dynamic mechanical analysis 93%
  • Byproducts 80%
  • Attribute 74%
  106 被引用数 (Scopus)

• Efficient (Hierarchical) inner-product encryption tightly reduced from the decisional linear assumption

  Okamoto, T. & Takashima, K., 2013 1月, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E96-A, 1, p. 42-52 11 p.

  研究成果: Article › 査読

  • Encryption 100%
  • Attribute 81%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Standard Model 24%
  17 被引用数 (Scopus)
• 2012

  Adaptively attribute-hiding (hierarchical) inner product encryption

  Okamoto, T. & Takashima, K., 2012, Advances in Cryptology, EUROCRYPT 2012 - 31st Annual International Conference on the Theory and Applications of Cryptographic Techniques, Proceedings. p. 591-608 18 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 7237 LNCS).

  研究成果: Conference contribution

  Open Access

  • Encryption 100%
  • Attribute 81%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Water 21%
  129 被引用数 (Scopus)

• Fully secure unbounded inner-product and attribute-based encryption

  Okamoto, T. & Takashima, K., 2012, Advances in Cryptology, ASIACRYPT 2012 - 18th International Conference on the Theory and Application of Cryptology and Information Security, Proceedings. p. 349-366 18 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 7658 LNCS).

  研究成果: Conference contribution

  Open Access

  • Encryption 100%
  • Attribute 81%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Standard Model 27%
  145 被引用数 (Scopus)

• Provably-secure cancelable biometrics using 2-DNF evaluation

  Hattori, M., Matsuda, N., Ito, T., Shibata, Y., Takashima, K. & Yoneda, T., 2012, In: Journal of information processing. 20, 2, p. 496-507 12 p.

  研究成果: Article › 査読

  Open Access

  • Biometrics 100%
  • Authentication 86%
  • Cryptography 83%
  10 被引用数 (Scopus)
• 2011

  Achieving short ciphertexts or short secret-keys for adaptively secure general inner-product encryption

  Okamoto, T. & Takashima, K., 2011, Cryptology and Network Security - 10th International Conference, CANS 2011, Proceedings. p. 138-159 22 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 7092 LNCS).

  研究成果: Conference contribution

  • Encryption 100%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Standard Model 28%
  • Revocation 28%
  62 被引用数 (Scopus)

• Efficient attribute-based signatures for non-monotone predicates in the standard model

  Okamoto, T. & Takashima, K., 2011, Public Key Cryptography, PKC 2011 - 14th International Conference on Practice and Theory in Public Key Cryptography, Proceedings. p. 35-52 18 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 6571 LNCS).

  研究成果: Conference contribution

  Open Access

  • Signature Scheme 100%
  • Standard Model 88%
  • Attribute 75%
  • Hash functions 46%
  • Collision 9%
  145 被引用数 (Scopus)

• Some key techniques on pairing vector spaces

  Okamoto, T. & Takashima, K., 2011, Progress in Cryptology, AFRICACRYPT 2011 - 4th International Conference on Cryptology in Africa, Proceedings. p. 380-382 3 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 6737 LNCS).

  研究成果: Conference contribution

  • Pairing 100%
  • Vector spaces 95%
  • Vector space 79%
  • Bilinear Pairings 49%
  • Dual Group 39%
  3 被引用数 (Scopus)
• 2010

  Fully secure functional encryption: Attribute-based encryption and (hierarchical) inner product encryption

  Lewko, A., Okamoto, T., Sahai, A., Takashima, K. & Waters, B., 2010, Advances in Cryptology - Eurocrypt 2010, 29th Annual International Conference on the Theory and Applications of Cryptographic Techniques, Proceedings. p. 62-91 30 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 6110 LNCS).

  研究成果: Conference contribution

  Open Access

  • Encryption 100%
  • Attribute 81%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Bilinear Pairings 19%
  1017 被引用数 (Scopus)

• Fully secure functional encryption with general relations from the decisional linear assumption

  Okamoto, T. & Takashima, K., 2010, Advances in Cryptology - CRYPTO 2010 - 30th Annual Cryptology Conference, Proceedings. p. 191-208 18 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 6223 LNCS).

  研究成果: Conference contribution

  Open Access

  • Encryption 100%
  • Cryptography 70%
  • Scalar, inner or dot product 48%
  • Access Structure 48%
  • Policy 33%
  383 被引用数 (Scopus)
• 2009

  An algorithm for computing a sequence of richelot isogenies

  Takashima, K. & Yoshida, R., 2009, In: Bulletin of the Korean Mathematical Society. 46, 4, p. 789-802 14 p.

  研究成果: Article › 査読

  Open Access

  • Isogenies 100%
  • Isogeny 46%
  • Genus 28%
  • Curve 21%
  3 被引用数 (Scopus)

• Development of ID-Based encryption

  Takashima, K. & Sakagami, T., 2009 6月, In: Mitsubishi Electric Advance. 126, p. 6-8 3 p.

  研究成果: Article › 査読

• Hierarchical predicate encryption for inner-products

  Okamoto, T. & Takashima, K., 2009, Advances in Cryptology - ASIACRYPT 2009 - 15th International Conference on the Theory and Application of Cryptology and Information Security, Proceedings. p. 214-231 18 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 5912 LNCS).

  研究成果: Conference contribution

  Open Access

  • Encryption 100%
  • Scalar, inner or dot product 81%
  • Cryptography 70%
  • Bilinear Pairings 68%
  • Standard Model 48%
  215 被引用数 (Scopus)

• Simple algorithms for computing a sequence of 2-isogenies

  Yoshida, R. & Takashima, K., 2009, In: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). 5461, p. 52-65 14 p.

  研究成果: Conference article › 査読

  • Isogenies 100%
  • Torsion Points 47%
  • Isogeny 46%
  • Redundancy 39%
  • Torsional stress 35%
  3 被引用数 (Scopus)
• 2008

  Efficiently computable distortion maps for supersingular curves

  Takashima, K., 2008, Algorithmic Number Theory - 8th International Symposium, ANTS-VIII, Proceedings. p. 88-101 14 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 5011 LNCS).

  研究成果: Conference contribution

  • Curve 100%
  • Cryptography 67%
  • Endomorphism 52%
  • Genus 43%
  • Open Problems 43%
  9 被引用数 (Scopus)

• Homomorphic encryption and signatures from vector decomposition

  Okamoto, T. & Takashima, K., 2008, Pairing-Based Cryptography - Pairing 2008 - Second International Conference, Proceedings. p. 57-74 18 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 5209 LNCS).

  研究成果: Conference contribution

  • Homomorphic Encryption 100%
  • Eigenvalues and eigenfunctions 55%
  • Cryptography 54%
  • Problem Decomposition 53%
  • Eigenvector 48%
  101 被引用数 (Scopus)
• 2007

  Scaling security of elliptic curves with fast pairing using efficient endomorphisms

  Takashima, K., 2007 1月, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E90-A, 1, p. 152-158 7 p.

  研究成果: Article › 査読

  • Pairing 100%
  • Endomorphism 88%
  • Elliptic Curves 85%
  • Scaling 78%
  • Cryptography 50%
  20 被引用数 (Scopus)
• 2006

  Practical application of lattice basis reduction algorithm to side-channel analysis on (EC)DSA

  Takashima, K., 2006 5月, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E89-A, 5, p. 1255-1262 8 p.

  研究成果: Article › 査読

  • Side-channel Analysis 100%
  • Lattice Basis Reduction 84%
  • Elliptic Curves 49%
  • Attack 18%
  • Countermeasures 13%
  1 被引用数 (Scopus)
• 2005

  New families of hyperelliptic curves with efficient gallant-lambert- vanstone method

  Takashima, K., 2005, In: LECTURE NOTES IN COMPUTER SCIENCE. 3506, p. 279-295 17 p.

  研究成果: Conference article › 査読

  • Hyperelliptic Curves 100%
  • Cryptography 69%
  • Multiplication 39%
  • Family 39%
  • Curve 22%

• Practical modifications of leadbitter et al.'s repeated-bits side-channel analysis on (EC)DSA

  Takashima, K., 2005, Information Security Applications - 6th International Workshop, WISA 2005, Revised Selected Papers. p. 259-270 12 p. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); vol. 3786 LNCS).

  研究成果: Conference contribution

  • Side-channel Analysis 100%
  • Attack 21%
  • Countermeasures 16%
  • Scalar multiplication 13%
  • Exponentiation 13%
  1 被引用数 (Scopus)
• 2002

  Cryptanalysis technique to evaluate the strength of ciphers

  Tokita, T., Sakai, Y. & Takashima, K., 2002 12月, In: Mitsubishi Electric Advance. 100, p. 9-12 4 p.

  研究成果: Article › 査読