Takeshi Shimoyama

70 papers A* 6A 4B 2C 6Misc 13Journal 28Unranked 11

Year	Rank	Type	Title / Venue / Authors
2021	J	`jnl`	A New Schnorr Multi-Signatures to Support Both Multiple Messages Signing and Key Aggregation. J. Inf. Process. Rikuhiro Kojima, Dai Yamamoto, Takeshi Shimoyama, Kouichi Yasaki, Kazuaki Nimura
2020	—	`conf`	A Novel Scheme of Schnorr Multi-signatures for Multiple Messages with Key Aggregation. BWCCA Rikuhiro Kojima, Dai Yamamoto, Takeshi Shimoyama, Kouichi Yasaki, Kazuaki Nimura
2020	J	`jnl`	A Setup-Free Threshold Encryption Scheme for the Bitcoin Protocol and Its Applications. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Goichiro Hanaoka, Yusuke Sakai, Toshiya Shimizu, Takeshi Shimoyama, SeongHan Shin
2017	J	`jnl`	Analysis of decreasing squared-sum of Gram-Schmidt lengths for short lattice vectors. J. Math. Cryptol. Masaya Yasuda, Kazuhiro Yokoyama, Takeshi Shimoyama, Jun Kogure, Takeshi Koshiba
2017	C	`conf`	Block Cipher Modes of Operation for Heterogeneous Format Preserving Encryption. ISPEC Toshiya Shimizu, Takeshi Shimoyama
2017	C	`conf`	Recovering Attacks Against Linear Sketch in Fuzzy Signature Schemes of ACNS 2015 and 2016. ISPEC Masaya Yasuda, Takeshi Shimoyama, Masahiko Takenaka, Narishige Abe, Shigefumi Yamada, Junpei Yamaguchi
2016	J	`jnl`	Computational hardness of IFP and ECDLP. Appl. Algebra Eng. Commun. Comput. Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Tetsuya Izu
2015	J	`jnl`	New packing method in somewhat homomorphic encryption and its applications. Secur. Commun. Networks Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Kazuhiro Yokoyama, Takeshi Koshiba
2015	—	`conf`	Privacy-Preserving Fuzzy Commitment for Biometrics via Layered Error-Correcting Codes. FPS Masaya Yasuda, Takeshi Shimoyama, Narishige Abe, Shigefumi Yamada, Takashi Shinzaki, Takeshi Koshiba
2015	—	`conf`	Secure Data Devolution: Practical Re-encryption with Auxiliary Data in LWE-based Somewhat Homomorphic Encryption. SCC@ASIACCS Masaya Yasuda, Takeshi Koshiba, Takeshi Shimoyama, Jun Kogure, Kazuhiro Yokoyama
2015	Misc	`conf`	Secure Statistical Analysis Using RLWE-Based Homomorphic Encryption. ACISP Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Kazuhiro Yokoyama, Takeshi Koshiba
2014	J	`jnl`	Key Length Estimation of Pairing-Based Cryptosystems Using IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2014	J	`jnl`	On the exact decryption range for Gentry-Halevi's implementation of fully homomorphic encryption. J. Math. Cryptol. Masaya Yasuda, Kazuhiro Yokoyama, Takeshi Shimoyama, Jun Kogure, Takeshi Koshiba
2014	Misc	`conf`	Privacy-Preserving Wildcards Pattern Matching Using Symmetric Somewhat Homomorphic Encryption. ACISP Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Kazuhiro Yokoyama, Takeshi Koshiba
2013	—	`conf`	Packed Homomorphic Encryption Based on Ideal Lattices and Its Application to Biometrics. CD-ARES Workshops Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Kazuhiro Yokoyama, Takeshi Koshiba
2013	—	`conf`	Practical Packing Method in Somewhat Homomorphic Encryption. DPM/SETOP Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Kazuhiro Yokoyama, Takeshi Koshiba
2013	—	`conf`	Secure pattern matching using somewhat homomorphic encryption. CCSW Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Kazuhiro Yokoyama, Takeshi Koshiba
2012	—	`conf`	Analysis of Lattice Reduction Attack against the Somewhat Homomorphic Encryption Based on Ideal Lattices. EuroPKI Masaya Yasuda, Jun Yajima, Takeshi Shimoyama, Jun Kogure
2012	A	`conf`	Breaking Pairing-Based Cryptosystems Using η T Pairing over GF(397). ASIACRYPT Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi
2012	J	`jnl`	Breaking pairing-based cryptosystems using η IACR Cryptol. ePrint Arch. Takuya Hayashi, Takeshi Shimoyama, Naoyuki Shinohara, Tsuyoshi Takagi
2012	C	`conf`	Key Length Estimation of Pairing-Based Cryptosystems Using η T Pairing. ISPEC Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2012	J	`jnl`	Key Length Estimation of Pairing-based Cryptosystems using η IACR Cryptol. ePrint Arch. Naoyuki Shinohara, Takeshi Shimoyama, Takuya Hayashi, Tsuyoshi Takagi
2012	Misc	`conf`	On the Strength Comparison of the ECDLP and the IFP. SCN Masaya Yasuda, Takeshi Shimoyama, Jun Kogure, Tetsuya Izu
2012	J	`jnl`	Preimage Attacks on the Step-Reduced RIPEMD-128 and RIPEMD-160. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Chiaki Ohtahara, Yu Sasaki, Takeshi Shimoyama
2011	Misc	`conf`	Preimage Attacks on Full-ARIRANG (Poster). ACISP Chiaki Ohtahara, Keita Okada, Yu Sasaki, Takeshi Shimoyama
2011	Misc	`conf`	Preimage Attacks on Full-ARIRANG: Analysis of DM-Mode with Middle Feed-Forward. WISA Chiaki Ohtahara, Keita Okada, Yu Sasaki, Takeshi Shimoyama
2010	J	`jnl`	A Combinatorics Proliferation Model with Threshold for Malware Countermeasure. Inf. Media Technol. Kazumasa Omote, Takeshi Shimoyama, Satoru Torii
2010	J	`jnl`	A Combinatorics Proliferation Model with Threshold for Malware Countermeasure. J. Inf. Process. Kazumasa Omote, Takeshi Shimoyama, Satoru Torii
2010	—	`conf`	CAIRN: Dedicated Integer Factoring Devices. NBiS Tetsuya Izu, Jun Kogure, Takeshi Shimoyama
2010	Misc	`conf`	Matrix Representation of Conditions for the Collision Attack of SHA-1 and Its Application to the Message Modification. IWSEC Jun Yajima, Takeshi Shimoyama
2010	Misc	`conf`	Preimage Attacks on Step-Reduced RIPEMD-128 and RIPEMD-160. Inscrypt Chiaki Ohtahara, Yu Sasaki, Takeshi Shimoyama
2009	J	`jnl`	A Strict Evaluation on the Number of Conditions for SHA-1 Collision Search. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Jun Yajima, Terutoshi Iwasaki, Yusuke Naito, Yu Sasaki, Takeshi Shimoyama, Thomas Peyrin, Noboru Kunihiro, Kazuo Ohta
2009	J	`jnl`	Forgery Attacks on Time-Stamp, Signed PDF and X.509 Certificate. IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Kouichi Itoh, Tetsuya Izu, Wakaha Ogata, Takeshi Shimoyama, Masahiko Takenaka
2008	A	`conf`	A strict evaluation method on the number of conditions for the SHA-1 collision search. AsiaCCS Jun Yajima, Terutoshi Iwasaki, Yusuke Naito, Yu Sasaki, Takeshi Shimoyama, Noboru Kunihiro, Kazuo Ohta
2008	J	`jnl`	Extending Bleichenbacher's Forgery Attack. Inf. Media Technol. Tetsuya Izu, Takeshi Shimoyama, Masahiko Takenaka
2008	J	`jnl`	Extending Bleichenbacher's Forgery Attack. J. Inf. Process. Tetsuya Izu, Takeshi Shimoyama, Masahiko Takenaka
2007	C	`conf`	A Combinatorics Proliferation Model to Determine the Timing for Blocking Scanning Malware. SECRYPT Kazumasa Omote, Takeshi Shimoyama, Satoru Torii
2007	Misc	`conf`	A New Strategy for Finding a Differential Path of SHA-1. ACISP Jun Yajima, Yu Sasaki, Yusuke Naito, Terutoshi Iwasaki, Takeshi Shimoyama, Noboru Kunihiro, Kazuo Ohta
2007	B	`conf`	Analysis on Bleichenbacher's Forgery Attack. ARES Tetsuya Izu, Masahiko Takenaka, Takeshi Shimoyama
2007	A	`conf`	CAIRN 2: An FPGA Implementation of the Sieving Step in the Number Field Sieve Method. CHES Tetsuya Izu, Jun Kogure, Takeshi Shimoyama
2007	J	`jnl`	Development of the Lead-Free Brush Material for the High-Load Starter. IEICE Trans. Electron. Ryoichi Honbo, Youichi Murakami, Koichiro Sawa, Hiroyuki Wakabayashi, Naruhiko Inayoshi, Kyoji Inukai, Takeshi Shimoyama, Naoki Morita
2007	Misc	`conf`	Experiments on the Linear Algebra Step in the Number Field Sieve. IWSEC Kazumaro Aoki, Takeshi Shimoyama, Hiroki Ueda
2007	C	`conf`	How to Forge a Time-Stamp Which Adobe's Acrobat Accepts. IMACC Tetsuya Izu, Takeshi Shimoyama, Masahiko Takenaka
2007	J	`jnl`	Low-Density Attack Revisited. IACR Cryptol. ePrint Arch. Tetsuya Izu, Jun Kogure, Takeshi Koshiba, Takeshi Shimoyama
2007	J	`jnl`	Low-density attack revisited. Des. Codes Cryptogr. Tetsuya Izu, Jun Kogure, Takeshi Koshiba, Takeshi Shimoyama
2007	—	`conf`	Timing to Block Scanning Malwares by Using Combinatorics Proliferation Model. ICETE (Selected Papers) Kazumasa Omote, Takeshi Shimoyama, Satoru Torii
2007	Misc	`conf`	Two Methods for Speeding Up Similarity Measurement for Profile Data. IKE Takeshi Shimoyama, Yoichi Muraoka
2006	J	`jnl`	How to Construct Sufficient Condition in Searching Collisions of MD5. IACR Cryptol. ePrint Arch. Yu Sasaki, Yusuke Naito, Jun Yajima, Takeshi Shimoyama, Noboru Kunihiro, Kazuo Ohta
2006	—	`conf`	How to Construct Sufficient Conditions for Hash Functions. VIETCRYPT Yu Sasaki, Yusuke Naito, Jun Yajima, Takeshi Shimoyama, Noboru Kunihiro, Kazuo Ohta
2006	A	`conf`	Improved Collision Search for SHA-0. ASIACRYPT Yusuke Naito, Yu Sasaki, Takeshi Shimoyama, Jun Yajima, Noboru Kunihiro, Kazuo Ohta
2006	J	`jnl`	Message Modification for Step 21-23 on SHA-0. IACR Cryptol. ePrint Arch. Yusuke Naito, Yu Sasaki, Takeshi Shimoyama, Jun Yajima, Noboru Kunihiro, Kazuo Ohta
2005	Misc	`conf`	Analysis on the Clockwise Transposition Routing for Dedicated Factoring Devices. WISA Tetsuya Izu, Noboru Kunihiro, Kazuo Ohta, Takeshi Shimoyama
2005	J	`jnl`	Development of the Lead-Free Carbon Brush Material for Starters. IEICE Trans. Electron. Ryoichi Honbo, Koichiro Sawa, Youichi Murakami, Hiroyuki Wakabayashi, Naruhiko Inayoshi, Kyoji Inukai, Takeshi Shimoyama, Naoki Morita
2005	J	`jnl`	Wang's sufficient conditions of MD5 are not sufficient. IACR Cryptol. ePrint Arch. Jun Yajima, Takeshi Shimoyama
2004	J	`jnl`	GNFS Factoring Statistics of RSA-100, 110, ..., 150. IACR Cryptol. ePrint Arch. Kazumaro Aoki, Yuji Kida, Takeshi Shimoyama, Hiroki Ueda
2004	J	`jnl`	Theoretical Analysis of chi IEICE Trans. Fundam. Electron. Commun. Comput. Sci. Masahiko Takenaka, Takeshi Shimoyama, Takeshi Koshiba
2003	Misc	`conf`	Theoretical Analysis of chi ACISP Masahiko Takenaka, Takeshi Shimoyama, Takeshi Koshiba
2002	Misc	`conf`	Differential Cryptanalysis of a Reduced-Round SEED. SCN Hitoshi Yanami, Takeshi Shimoyama
2002	A*	`conf`	Differential and Linear Cryptanalysis of a Reduced-Round SC2000. FSE Hitoshi Yanami, Takeshi Shimoyama, Orr Dunkelman
2002	A*	`conf`	Multiple Linear Cryptanalysis of a Reduced Round RC6. FSE Takeshi Shimoyama, Masahiko Takenaka, Takeshi Koshiba
2002	J	`jnl`	Theoretical Analysis of "Correlations in RC6". IACR Cryptol. ePrint Arch. Masahiko Takenaka, Takeshi Shimoyama, Takeshi Koshiba
2001	A*	`conf`	The Block Cipher SC2000. FSE Takeshi Shimoyama, Hitoshi Yanami, Kazuhiro Yokoyama, Masahiko Takenaka, Kouichi Itoh, Jun Yajima, Naoya Torii, Hidema Tanaka
1999	A*	`conf`	Interpolation Attacks of the Block Cipher: SNAKE. FSE Shiho Moriai, Takeshi Shimoyama, Toshinobu Kaneko
1998	B	`conf`	Higher Order Differential Attack Using Chosen Higher Order Differences. Selected Areas in Cryptography Shiho Moriai, Takeshi Shimoyama, Toshinobu Kaneko
1998	A*	`conf`	Higher Order Differential Attak of CAST Cipher. FSE Shiho Moriai, Takeshi Shimoyama, Toshinobu Kaneko
1998	A*	`conf`	Quadratic Relation of S-box and Its Application to the Linear Attack of Full Round DES. CRYPTO Takeshi Shimoyama, Toshinobu Kaneko
1997	C	`conf`	Improved fast software implementation of block ciphers. ICICS Takeshi Shimoyama, Seiichi Amada, Shiho Moriai
1997	—	`conf`	Improving the Higher Order Differential Attack and Cryptanalysis of the ISW Takeshi Shimoyama, Shiho Moriai, Toshinobu Kaneko
1996	J	`jnl`	Localization and Primary Decomposition of Polynomial Ideals. J. Symb. Comput. Takeshi Shimoyama, Kazuhiro Yokoyama
1994	J	`jnl`	A Gröbner Basis Method for Modules over Rings of Differential Operators. J. Symb. Comput. Toshinori Oaku, Takeshi Shimoyama