Katsuyuki Okeya

Publication Activity (10 Years)

Years Active: 2000-2010
Publications (10 Years): 0

Publications

Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
Recursive Double-Size Modular Multiplications from Euclidean and Montgomery Multipliers. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2010)
Katsuyuki Okeya, Hidehiro Katou, Yasuyuki Nogami
Width-3 Joint Sparse Form. ISPEC (2010)
Erik Dahmen, Katsuyuki Okeya
Sole Inversion Precomputation for Elliptic Curve Scalar Multiplications. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (6) (2010)
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
Faster Double-Size Bipartite Multiplication out of Montgomery Multipliers. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (8) (2009)
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
Bipartite modular multiplication with twice the bit-length of multipliers. Int. J. Inf. Sec. 8 (1) (2009)
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
Recursive Double-Size Modular Multiplications without Extra Cost for Their Quotients. CT-RSA (2009)
Katsuyuki Okeya
Side Channel Attacks against Hash-Based MACs with PGV Compression Functions. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2008)
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
A Black Hen Lays White Eggs. CARDIS (2008)
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
Montgomery Multiplication with Twice the Bit-Length of Multipliers. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2008)
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
Digital Signatures Out of Second-Preimage Resistant Hash Functions. PQCrypto (2008)
Camille Vuillaume, Katsuyuki Okeya, Erik Dahmen, Johannes Buchmann
Public Key Authentication with Memory Tokens. WISA (2008)
Yumi Sakemi, Yasuyuki Nogami, Katsuyuki Okeya, Hidehiro Katou, Yoshitaka Morikawa
Skew Frobenius Map and Efficient Scalar Multiplication for Pairing-Based Cryptography. CANS (2008)
Camille Vuillaume, Katsuyuki Okeya, Tsuyoshi Takagi
Short-Memory Scalar Multiplication for Koblitz Curves. IEEE Trans. Computers 57 (4) (2008)
Praveen Gauravaram, Katsuyuki Okeya
Side Channel Analysis of Some Hash Based MACs: A Response to SHA-3 Requirements. ICICS (2008)
Erik Dahmen, Katsuyuki Okeya, Daniel Schepers
Affine Precomputation with Sole Inversion in Elliptic Curve Cryptography. IACR Cryptol. ePrint Arch. 2007 (2007)
Hirotaka Yoshida, Dai Watanabe, Katsuyuki Okeya, Jun Kitahara, Hongjun Wu, Özgül Küçük, Bart Preneel
MAME: A Compression Function with Reduced Hardware Requirements. CHES (2007)
Johannes Buchmann, Erik Dahmen, Elena Klintsevich, Katsuyuki Okeya, Camille Vuillaume
Merkle Signatures with Virtually Unlimited Signature Capacity. ACNS (2007)
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
Double-Size Bipartite Modular Multiplication. ACISP (2007)
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi
A New Upper Bound for the Minimal Density of Joint Representations in Elliptic Curve Cryptosystems. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2007)
Praveen Gauravaram, Katsuyuki Okeya
An Update on the Side Channel Cryptanalysis of MACs Based on Cryptographic Hash Functions. INDOCRYPT (2007)
Erik Dahmen, Katsuyuki Okeya, Daniel Schepers
Affine Precomputation with Sole Inversion in Elliptic Curve Cryptography. ACISP (2007)
Tae Hyun Kim, Dong-Guk Han, Katsuyuki Okeya, Jongin Lim
Generic Cryptanalysis of Combined Countermeasures with Randomized BSD Representations. CARDIS (2006)
Katsuyuki Okeya
Side Channel Attacks Against HMACs Based on Block-Cipher Based Hash Functions. ACISP (2006)
Camille Vuillaume, Katsuyuki Okeya, Tsuyoshi Takagi
Defeating Simple Power Analysis on Koblitz Curves. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2006)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
Security Analysis of the SPA-Resistant Fractional Width Method. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2006)
Katsuyuki Okeya, Tetsu Iwata
Side Channel Attacks on Message Authentication Codes. Inf. Media Technol. 1 (2) (2006)
Dong-Guk Han, Katsuyuki Okeya, Tae Hyun Kim, Yoon Sung Hwang, Beomin Kim, Young-Ho Park
Enhanced Exhaustive Search Attack on Randomized BSD Type Countermeasure. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2006)
Katsuyuki Okeya, Tsuyoshi Takagi
Security analysis of CRT-based cryptosystems. Int. J. Inf. Sec. 5 (3) (2006)
Camille Vuillaume, Katsuyuki Okeya
Flexible Exponentiation with Resistance to Side Channel Attacks. ACNS (2006)
Masayuki Yoshino, Katsuyuki Okeya, Camille Vuillaume
Unbridle the Bit-Length of a Crypto-coprocessor with Montgomery Multiplication. Selected Areas in Cryptography (2006)
Katsuyuki Okeya, Dong-Guk Han
Cryptanalysis of Ha-Moon's Countermeasure of Randomized Signed Scalar Multiplication. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2005)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
Efficient Representations on Koblitz Curves with Resistance to Side Channel Attacks. ACISP (2005)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
On the Importance of Protecting in SFLASH against Side Channel Attacks. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2005)
Katsuyuki Okeya, Tetsu Iwata
Side Channel Attacks on Message Authentication Codes. ESAS (2005)
Erik Dahmen, Katsuyuki Okeya, Tsuyoshi Takagi
An Advanced Method for Joint Scalar Multiplications on Memory Constraint Devices. ESAS (2005)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
Short Memory Scalar Multiplication on Koblitz Curves. CHES (2005)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
On the Exact Flexibility of the Flexible Countermeasure Against Side Channel Attacks. ACISP (2004)
Dong-Guk Han, Katsuyuki Okeya, Tae Hyun Kim, Yoon Sung Hwang, Young-Ho Park, Souhwan Jung
Cryptanalysis of the Countermeasures Using Randomized Binary Signed Digits. ACNS (2004)
Katsuyuki Okeya, Tsuyoshi Takagi
SCA-Resistant and Fast Elliptic Scalar Multiplication Based on wNAF. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2004)
Katsuyuki Okeya, Tsuyoshi Takagi, Camille Vuillaume
On the Importance of Protecting Delta in SFLASH against Side Channel Attacks. ITCC (2) (2004)
Katsuyuki Okeya, Tsuyoshi Takagi
Security Analysis of CRT-Based Cryptosystems. ACNS (2004)
Katsuyuki Okeya, Katja Schmidt-Samoa, Christian Spahn, Tsuyoshi Takagi
Signed Binary Representations Revisited. CRYPTO (2004)
Katsuyuki Okeya, Katja Schmidt-Samoa, Christian Spahn, Tsuyoshi Takagi
Signed Binary Representations Revisited. IACR Cryptol. ePrint Arch. 2004 (2004)
Katsuyuki Okeya, Kouichi Sakurai
A Simple Power Attack on a Randomized Addition-Subtraction Chains Method for Elliptic Curve Cryptosystems. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (5) (2003)
Katsuyuki Okeya, Kouichi Sakurai
A multiple power analysis breaks the advanced version of the randomized addition-subtraction chains countermeasure against side channel attacks. ITW (2003)
Katsuyuki Okeya, Tsuyoshi Takagi
A More Flexible Countermeasure against Side Channel Attacks Using Window Method. CHES (2003)
Katsuyuki Okeya, Kouichi Sakurai
Use of Montgomery Trick in Precomputation of Multi-Scalar Multiplication in Elliptic Curve Cryptosystems. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2003)
Katsuyuki Okeya, Tsuyoshi Takagi
The Width-w NAF Method Provides Small Memory and Fast Elliptic Scalar Multiplications Secure against Side Channel Attacks. CT-RSA (2003)
Katsuyuki Okeya, Dong-Guk Han
Side Channel Attack on Ha-Moon's Countermeasure of Randomized Signed Scalar Multiplication. INDOCRYPT (2003)
Katsuyuki Okeya, Kouichi Sakurai
-Coordinate on the Montgomery Form and Analysis of Efficiency for Elliptic Curve Cryptosystems. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. (1) (2002)
Katsuyuki Okeya, Kouichi Sakurai
A Second-Order DPA Attack Breaks a Window-Method Based Countermeasure against Side Channel Attacks. ISC (2002)
Katsuyuki Okeya, Kouichi Sakurai
Fast Multi-scalar Multiplication Methods on Elliptic Curves with Precomputation Strategy Using Montgomery Trick. CHES (2002)
Katsuyuki Okeya, Kouichi Sakurai
On Insecurity of the Side Channel Attack Countermeasure Using Addition-Subtraction Chains under Distinguishability between Addition and Doubling. ACISP (2002)
Katsuyuki Okeya, Kunihiko Miyazaki, Kouichi Sakurai
A Fast Scalar Multiplication Method with Randomized Projective Coordinates on a Montgomery-Form Elliptic Curve Secure against Side Channel Attacks. ICISC (2001)
Katsuyuki Okeya, Kouichi Sakurai
Efficient Elliptic Curve Cryptosystems from a Scalar Multiplication Algorithm with Recovery of the y-Coordinate on a Montgomery-Form Elliptic Curve. CHES (2001)
Katsuyuki Okeya, Kouichi Sakurai
Power Analysis Breaks Elliptic Curve Cryptosystems even Secure against the Timing Attack. INDOCRYPT (2000)
Katsuyuki Okeya, Hiroyuki Kurumatani, Kouichi Sakurai
Elliptic Curves with the Montgomery-Form and Their Cryptographic Applications. Public Key Cryptography (2000)