Katsuyuki Takashima

Tatsuaki Okamoto, Katsuyuki Takashima: Efficient (Hierarchical) Inner-Product Encryption Tightly Reduced from the Decisional Linear Assumption. IEICE Transactions 96-A(1): 42-52 (2013)

Reo Yoshida, Katsuyuki Takashima: Computing a Sequence of 2-Isogenies on Supersingular Elliptic Curves. IEICE Transactions 96-A(1): 158-165 (2013)

Tatsuaki Okamoto, Katsuyuki Takashima: Decentralized Attribute-Based Signatures. Public Key Cryptography 2013: 125-142

Mitsuhiro Hattori, Nori Matsuda, Takashi Ito, Yoichi Shibata, Katsuyuki Takashima, Takeshi Yoneda: Provably-Secure Cancelable Biometrics Using 2-DNF Evaluation. JIP 20(2): 496-507 (2012)

Tatsuaki Okamoto, Katsuyuki Takashima: Fully Secure Unbounded Inner-Product and Attribute-Based Encryption. ASIACRYPT 2012: 349-366

Tatsuaki Okamoto, Katsuyuki Takashima: Adaptively Attribute-Hiding (Hierarchical) Inner Product Encryption. EUROCRYPT 2012: 591-608

Tatsuaki Okamoto, Katsuyuki Takashima: Fully Secure Unbounded Inner-Product and Attribute-Based Encryption. IACR Cryptology ePrint Archive 2012: 671 (2012)

Tatsuaki Okamoto, Katsuyuki Takashima: Some Key Techniques on Pairing Vector Spaces. AFRICACRYPT 2011: 380-382

Tatsuaki Okamoto, Katsuyuki Takashima: Achieving Short Ciphertexts or Short Secret-Keys for Adaptively Secure General Inner-Product Encryption. CANS 2011: 138-159

Tatsuaki Okamoto, Katsuyuki Takashima: Efficient Attribute-Based Signatures for Non-monotone Predicates in the Standard Model. Public Key Cryptography 2011: 35-52

Tatsuaki Okamoto, Katsuyuki Takashima: Adaptively Attribute-Hiding (Hierarchical) Inner Product Encryption. IACR Cryptology ePrint Archive 2011: 543 (2011)

Tatsuaki Okamoto, Katsuyuki Takashima: Achieving Short Ciphertexts or Short Secret-Keys for Adaptively Secure General Inner-Product Encryption. IACR Cryptology ePrint Archive 2011: 648 (2011)

Tatsuaki Okamoto, Katsuyuki Takashima: Efficient Attribute-Based Signatures for Non-Monotone Predicates in the Standard Model. IACR Cryptology ePrint Archive 2011: 700 (2011)

Tatsuaki Okamoto, Katsuyuki Takashima: Decentralized Attribute-Based Signatures. IACR Cryptology ePrint Archive 2011: 701 (2011)

Tatsuaki Okamoto, Katsuyuki Takashima: Fully Secure Functional Encryption with General Relations from the Decisional Linear Assumption. CRYPTO 2010: 191-208

Allison B. Lewko, Tatsuaki Okamoto, Amit Sahai, Katsuyuki Takashima, Brent Waters: Fully Secure Functional Encryption: Attribute-Based Encryption and (Hierarchical) Inner Product Encryption. EUROCRYPT 2010: 62-91

Allison B. Lewko, Tatsuaki Okamoto, Amit Sahai, Katsuyuki Takashima, Brent Waters: Fully Secure Functional Encryption: Attribute-Based Encryption and (Hierarchical) Inner Product Encryption. IACR Cryptology ePrint Archive 2010: 110 (2010)

Tatsuaki Okamoto, Katsuyuki Takashima: Fully Secure Functional Encryption with General Relations from the Decisional Linear Assumption. IACR Cryptology ePrint Archive 2010: 563 (2010)

Tatsuaki Okamoto, Katsuyuki Takashima: Hierarchical Predicate Encryption for Inner-Products. ASIACRYPT 2009: 214-231

Katsuyuki Takashima: Efficiently Computable Distortion Maps for Supersingular Curves. ANTS 2008: 88-101

Reo Yoshida, Katsuyuki Takashima: Simple Algorithms for Computing a Sequence of 2-Isogenies. ICISC 2008: 52-65

Tatsuaki Okamoto, Katsuyuki Takashima: Homomorphic Encryption and Signatures from Vector Decomposition. Pairing 2008: 57-74

Katsuyuki Takashima: Scaling Security of Elliptic Curves with Fast Pairing Using Efficient Endomorphisms. IEICE Transactions 90-A(1): 152-159 (2007)

Katsuyuki Takashima: A New Type of Fast Endomorphisms on Jacobians of Hyperelliptic Curves and Their Cryptographic Application. IEICE Transactions 89-A(1): 124-133 (2006)

Katsuyuki Takashima: Practical Application of Lattice Basis Reduction Algorithm to Side-Channel Analysis on (EC)DSA. IEICE Transactions 89-A(5): 1255-1262 (2006)

Katsuyuki Takashima: Practical Modifications of Leadbitter et al.'s Repeated-Bits Side-Channel Analysis on (EC)DSA. WISA 2005: 259-270

Katsuyuki Takashima: New Families of Hyperelliptic Curves with Efficient Gallant-Lambert-Vanstone Method. ICISC 2004: 279-295