Katsuyuki Takashima

发表

Decentralized Attribute-Based Signatures

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2013, Public Key Cryptography.

Efficient (Hierarchical) Inner-Product Encryption Tightly Reduced from the Decisional Linear Assumption

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2013, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Hierarchical Predicate Encryption for Inner-Products

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2009, ASIACRYPT.

Computational Aspects of Jacobian Varieties and Their Cryptographic Applications

Katsuyuki Takashima, 2009 .

Efficient Attribute-Based Signatures for Non-Monotone Predicates in the Standard Model

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2014, IEEE Transactions on Cloud Computing.

Homomorphic Encryption and Signatures from Vector Decomposition

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2008, Pairing.

One-Round Authenticated Group Key Exchange from Isogenies

Atsushi Fujioka, Kazuki Yoneyama, Katsuyuki Takashima, 2019, IACR Cryptol. ePrint Arch..

New Families of Hyperelliptic Curves with Efficient Gallant-Lambert-Vanstone Method

Katsuyuki Takashima, 2004, ICISC.

Unbounded Inner Product Functional Encryption from Bilinear Maps

Junichi Tomida, Katsuyuki Takashima, 2018, IACR Cryptol. ePrint Arch..

Constructing an efficient hash function from $3$-isogenies

Tsuyoshi Takagi, Katsuyuki Takashima, Hikari Tachibana, 2017, JSIAM Lett..

Expressive Attribute-Based Encryption with Constant-Size Ciphertexts from the Decisional Linear Assumption

Katsuyuki Takashima, 2014, SCN.

Provably-Secure Cancelable Biometrics Using 2-DNF Evaluation

Takashi Ito, Katsuyuki Takashima, Mitsuhiro Hattori, 2012, J. Inf. Process..

Fully Secure Functional Encryption with General Relations from the Decisional Linear Assumption

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2010, IACR Cryptol. ePrint Arch..

Supersingular Isogeny Diffie-Hellman Authenticated Key Exchange

Atsushi Fujioka, Kazuki Yoneyama, Katsuyuki Takashima, 2018, IACR Cryptol. ePrint Arch..

Recent Topics on Practical Functional Encryption

Katsuyuki Takashima, 2014, 2014 Second International Symposium on Computing and Networking.

Système de chiffrement, procédé de chiffrement et programme de chiffrement

Tatsuaki Okamoto, Katsuyuki Takashima, Tatsuaki Okamoto, 2013 .

Adaptively Simulation-Secure Attribute-Hiding Predicate Encryption

Tatsuaki Okamoto, Pratish Datta, Katsuyuki Takashima, 2018, ASIACRYPT.

Fully-Anonymous Functional Proxy-Re-Encryption

Yutaka Kawai, Katsuyuki Takashima, K. Takashima, 2013, IACR Cryptol. ePrint Arch..

2014 Second International Symposium on Computing and Networking

Xiaohong Jiang, Takayuki Morikawa, Maurice Margenstern, 2014 .

Dual Pairing Vector Spaces and Their Applications

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2015, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Simple Algorithms for Computing a Sequence of 2-Isogenies

Katsuyuki Takashima, Reo Yoshida, K. Takashima, 2009, ICISC.

Fully Secure Functional Encryption: Attribute-Based Encryption and (Hierarchical) Inner Product Encryption

Allison Bishop, Brent Waters, Amit Sahai, 2010, EUROCRYPT.

Efficiently Computable Distortion Maps for Supersingular Curves

Katsuyuki Takashima, K. Takashima, 2008, ANTS.

Predicate- and Attribute-Hiding Inner Product Encryption in a Public Key Setting

Yutaka Kawai, Katsuyuki Takashima, 2013, Pairing.

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

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2015, Des. Codes Cryptogr..

Tighter Security for Efficient Lattice Cryptography via the Rényi Divergence of Optimized Orders

Atsushi Takayasu, Katsuyuki Takashima, 2015, ProvSec.

Some Key Techniques on Pairing Vector Spaces

Tatsuaki Okamoto, Katsuyuki Takashima, 2011, AFRICACRYPT.

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

Tsuyoshi Takagi, Katsuyuki Takashima, Tomoki Moriya, 2019, Inscrypt.

Dispositif de génération de cryptogramme, système de communication de cryptogramme et dispositif de génération de paramètre de groupe

Katsuyuki Takashima, 2007 .

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

Masaya Yasuda, Ryoya Fukasaku, Yasuhiko Ikematsu, 2020, APKC@AsiaCCS.

New Assumptions on Isogenous Pairing Groups with Applications to Attribute-Based Encryption

Takeshi Koshiba, Katsuyuki Takashima, 2018, ICISC.

A New Type of Fast Endomorphisms on Jacobians of Hyperelliptic Curves and Their Cryptographic Application

Katsuyuki Takashima, K. Takashima, 2006, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Fully Secure Unbounded Inner-Product and Attribute-Based Encryption

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2012, ASIACRYPT.

Practical Application of Lattice Basis Reduction Algorithm to Side-Channel Analysis on (EC)DSA

Katsuyuki Takashima, 2006, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

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

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2018, Journal of Cryptology.

Efficient Attribute-Based Signatures for Unbounded Arithmetic Branching Programs

Tatsuaki Okamoto, Pratish Datta, Katsuyuki Takashima, 2019, Public Key Cryptography.

On the Role of Mathematical Sciences in Cryptography

Katsuyuki Takashima, 2018 .

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

Tsuyoshi Takagi, Katsuyuki Takashima, Yusuke Aikawa, 2020, IACR Cryptol. ePrint Arch..

Decentralized Attribute-Based Encryption and Signatures

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2020, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Computing a Sequence of 2-Isogenies on Supersingular Elliptic Curves

Katsuyuki Takashima, Reo Yoshida, 2013, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Système de cryptage

Katsuyuki Takashima, Tatsuaki Okamoto, 2013 .

Practical Modifications of Leadbitter et al.'s Repeated-Bits Side-Channel Analysis on (EC)DSA

Katsuyuki Takashima, K. Takashima, 2005, WISA.

Multi-party Key Exchange Protocols from Supersingular Isogenies

Noboru Kunihiro, Katsuyuki Takashima, Satoshi Furukawa, 2018, 2018 International Symposium on Information Theory and Its Applications (ISITA).

New Proof Techniques for DLIN-Based Adaptively Secure Attribute-Based Encryption

Katsuyuki Takashima, K. Takashima, 2017, ACISP.

Scaling Security of Elliptic Curves with Fast Pairing Using Efficient Endomorphisms

Katsuyuki Takashima, 2007, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Verschlüsselungssystem, verschlüsselungsverfahren und verschlüsselungsprogramm

Katsuyuki Takashima, Tatsuaki Okamoto, 2013 .

Adaptively Attribute-Hiding (Hierarchical) Inner Product Encryption

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2012, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

Efficient Attribute-Based Signatures for Non-Monotone Predicates in the Standard Model

Tatsuaki Okamoto, Katsuyuki Takashima, T. Okamoto, 2014, IEEE Transactions on Cloud Computing.

Efficient Algorithms for Isogeny Sequences and Their Cryptographic Applications

Katsuyuki Takashima, K. Takashima, 2017, CREST Crypto-Math Project.

Pairing Cryptography Meets Isogeny: A New Framework of Isogenous Pairing Groups

Takeshi Koshiba, Katsuyuki Takashima, 2016, IACR Cryptol. ePrint Arch..

Decomposed Richelot isogenies of Jacobian varieties of hyperelliptic curves and generalized Howe curves pdf

Katsuyuki Takashima, Toshiyuki Katsura, K. Takashima, 2021, ArXiv.

Efficient Attribute-Based Signatures for Unbounded Arithmetic Branching Programs

Pratish Datta, Katsuyuki Takashima, Tatsuaki Okamoto, 2021 .