Katsuyuki Okeya

57 papers A* 1A 5B 9C 6Misc 11Journal 21Unranked 4
YearRankTypeTitle / Venue / Authors
2010 J jnl
Recursive Double-Size Modular Multiplications from Euclidean and Montgomery Multipliers.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2010 J jnl
Sole Inversion Precomputation for Elliptic Curve Scalar Multiplications.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Erik Dahmen, Katsuyuki Okeya
2010 C conf
Width-3 Joint Sparse Form.
ISPEC
Katsuyuki Okeya, Hidehiro Katou, Yasuyuki Nogami
2009 J jnl
Bipartite modular multiplication with twice the bit-length of multipliers.
Int. J. Inf. Sec.
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2009 J jnl
Faster Double-Size Bipartite Multiplication out of Montgomery Multipliers.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2009 B conf
Recursive Double-Size Modular Multiplications without Extra Cost for Their Quotients.
CT-RSA
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2008 C conf
A Black Hen Lays White Eggs.
CARDIS
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2008 C conf
Digital Signatures Out of Second-Preimage Resistant Hash Functions.
PQCrypto
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2008 J jnl
Montgomery Multiplication with Twice the Bit-Length of Multipliers.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2008 Misc conf
Public Key Authentication with Memory Tokens.
WISA
Camille Vuillaume, Katsuyuki Okeya, Erik Dahmen, Johannes Buchmann
2008 J jnl
Short-Memory Scalar Multiplication for Koblitz Curves.
IEEE Trans. Computers
Camille Vuillaume, Katsuyuki Okeya, Tsuyoshi Takagi
2008 C conf
Side Channel Analysis of Some Hash Based MACs: A Response to SHA-3 Requirements.
ICICS
Praveen Gauravaram, Katsuyuki Okeya
2008 J jnl
Side Channel Attacks against Hash-Based MACs with PGV Compression Functions.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya
2008 B conf
Skew Frobenius Map and Efficient Scalar Multiplication for Pairing-Based Cryptography.
CANS
Yumi Sakemi, Yasuyuki Nogami, Katsuyuki Okeya, Hidehiro Katou, Yoshitaka Morikawa
2007 J jnl
A New Upper Bound for the Minimal Density of Joint Representations in Elliptic Curve Cryptosystems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi
2007 Misc conf
Affine Precomputation with Sole Inversion in Elliptic Curve Cryptography.
ACISP
Erik Dahmen, Katsuyuki Okeya, Daniel Schepers
2007 J jnl
Affine Precomputation with Sole Inversion in Elliptic Curve Cryptography.
IACR Cryptol. ePrint Arch.
Erik Dahmen, Katsuyuki Okeya, Daniel Schepers
2007 Misc conf
An Update on the Side Channel Cryptanalysis of MACs Based on Cryptographic Hash Functions.
INDOCRYPT
Praveen Gauravaram, Katsuyuki Okeya
2007 Misc conf
Double-Size Bipartite Modular Multiplication.
ACISP
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2007 A conf
MAME: A Compression Function with Reduced Hardware Requirements.
CHES
Hirotaka Yoshida, Dai Watanabe, Katsuyuki Okeya, Jun Kitahara, Hongjun Wu, Özgül Küçük, Bart Preneel
2007 B conf
Merkle Signatures with Virtually Unlimited Signature Capacity.
ACNS
Johannes Buchmann, Erik Dahmen, Elena Klintsevich, Katsuyuki Okeya, Camille Vuillaume
2006 J jnl
Defeating Simple Power Analysis on Koblitz Curves.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Camille Vuillaume, Katsuyuki Okeya, Tsuyoshi Takagi
2006 J jnl
Enhanced Exhaustive Search Attack on Randomized BSD Type Countermeasure.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Dong-Guk Han, Katsuyuki Okeya, Tae Hyun Kim, Yoon Sung Hwang, Beomin Kim, Young-Ho Park
2006 B conf
Flexible Exponentiation with Resistance to Side Channel Attacks.
ACNS
Camille Vuillaume, Katsuyuki Okeya
2006 C conf
Generic Cryptanalysis of Combined Countermeasures with Randomized BSD Representations.
CARDIS
Tae Hyun Kim, Dong-Guk Han, Katsuyuki Okeya, Jongin Lim
2006 J jnl
Security Analysis of the SPA-Resistant Fractional Width Method.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2006 J jnl
Security analysis of CRT-based cryptosystems.
Int. J. Inf. Sec.
Katsuyuki Okeya, Tsuyoshi Takagi
2006 Misc conf
Side Channel Attacks Against HMACs Based on Block-Cipher Based Hash Functions.
ACISP
Katsuyuki Okeya
2006 J jnl
Side Channel Attacks on Message Authentication Codes.
Inf. Media Technol.
Katsuyuki Okeya, Tetsu Iwata
2006 B conf
Unbridle the Bit-Length of a Crypto-coprocessor with Montgomery Multiplication.
Selected Areas in Cryptography
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
2005 — conf
An Advanced Method for Joint Scalar Multiplications on Memory Constraint Devices.
ESAS
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi
2005 J jnl
Cryptanalysis of Ha-Moon's Countermeasure of Randomized Signed Scalar Multiplication.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Dong-Guk Han
2005 Misc conf
Efficient Representations on Koblitz Curves with Resistance to Side Channel Attacks.
ACISP
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2005 J jnl
On the Importance of Protecting in SFLASH against Side Channel Attacks.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2005 A conf
Short Memory Scalar Multiplication on Koblitz Curves.
CHES
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2005 — conf
Side Channel Attacks on Message Authentication Codes.
ESAS
Katsuyuki Okeya, Tetsu Iwata
2004 B conf
Cryptanalysis of the Countermeasures Using Randomized Binary Signed Digits.
ACNS
Dong-Guk Han, Katsuyuki Okeya, Tae Hyun Kim, Yoon Sung Hwang, Young-Ho Park, Souhwan Jung
2004 Misc conf
On the Exact Flexibility of the Flexible Countermeasure Against Side Channel Attacks.
ACISP
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2004 — conf
On the Importance of Protecting Delta in SFLASH against Side Channel Attacks.
ITCC (2)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
2004 J jnl
SCA-Resistant and Fast Elliptic Scalar Multiplication Based on wNAF.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Tsuyoshi Takagi
2004 B conf
Security Analysis of CRT-Based Cryptosystems.
ACNS
Katsuyuki Okeya, Tsuyoshi Takagi
2004 A* conf
Signed Binary Representations Revisited.
CRYPTO
Katsuyuki Okeya, Katja Schmidt-Samoa, Christian Spahn, Tsuyoshi Takagi
2004 J jnl
Signed Binary Representations Revisited.
IACR Cryptol. ePrint Arch.
Katsuyuki Okeya, Katja Schmidt-Samoa, Christian Spahn, Tsuyoshi Takagi
2003 A conf
A More Flexible Countermeasure against Side Channel Attacks Using Window Method.
CHES
Katsuyuki Okeya, Tsuyoshi Takagi
2003 J jnl
A Simple Power Attack on a Randomized Addition-Subtraction Chains Method for Elliptic Curve Cryptosystems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Kouichi Sakurai
2003 B conf
A multiple power analysis breaks the advanced version of the randomized addition-subtraction chains countermeasure against side channel attacks.
ITW
Katsuyuki Okeya, Kouichi Sakurai
2003 Misc conf
Side Channel Attack on Ha-Moon's Countermeasure of Randomized Signed Scalar Multiplication.
INDOCRYPT
Katsuyuki Okeya, Dong-Guk Han
2003 B conf
The Width-w NAF Method Provides Small Memory and Fast Elliptic Scalar Multiplications Secure against Side Channel Attacks.
CT-RSA
Katsuyuki Okeya, Tsuyoshi Takagi
2003 J jnl
Use of Montgomery Trick in Precomputation of Multi-Scalar Multiplication in Elliptic Curve Cryptosystems.
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Kouichi Sakurai
2002 J jnl
A Scalar Multiplication Algorithm with Recovery of the
IEICE Trans. Fundam. Electron. Commun. Comput. Sci.
Katsuyuki Okeya, Kouichi Sakurai
2002 C conf
A Second-Order DPA Attack Breaks a Window-Method Based Countermeasure against Side Channel Attacks.
ISC
Katsuyuki Okeya, Kouichi Sakurai
2002 A conf
Fast Multi-scalar Multiplication Methods on Elliptic Curves with Precomputation Strategy Using Montgomery Trick.
CHES
Katsuyuki Okeya, Kouichi Sakurai
2002 Misc conf
On Insecurity of the Side Channel Attack Countermeasure Using Addition-Subtraction Chains under Distinguishability between Addition and Doubling.
ACISP
Katsuyuki Okeya, Kouichi Sakurai
2001 Misc conf
A Fast Scalar Multiplication Method with Randomized Projective Coordinates on a Montgomery-Form Elliptic Curve Secure against Side Channel Attacks.
ICISC
Katsuyuki Okeya, Kunihiko Miyazaki, Kouichi Sakurai
2001 A conf
Efficient Elliptic Curve Cryptosystems from a Scalar Multiplication Algorithm with Recovery of the y-Coordinate on a Montgomery-Form Elliptic Curve.
CHES
Katsuyuki Okeya, Kouichi Sakurai
2000 — conf
Elliptic Curves with the Montgomery-Form and Their Cryptographic Applications.
Public Key Cryptography
Katsuyuki Okeya, Hiroyuki Kurumatani, Kouichi Sakurai
2000 Misc conf
Power Analysis Breaks Elliptic Curve Cryptosystems even Secure against the Timing Attack.
INDOCRYPT
Katsuyuki Okeya, Kouichi Sakurai