IEICE Trans

Takeshi SHIMOYAMA

A Setup-Free Threshold Encryption Scheme for the Bitcoin Protocol and Its Applications Goichiro HANAOKA Yusuke SAKAI Toshiya SHIMIZU Takeshi SHIMOYAMA SeongHan SHIN
Publication: Publication Date: 2020/01/01 Vol. E103-A No. 1 pp. 150-164 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: threshold encryption, ECDSA, Bitcoin, provable security, implementation,
	Summary \| Full Text:PDF

Key Length Estimation of Pairing-Based Cryptosystems Using η_T Pairing over GF(3ⁿ) Naoyuki SHINOHARA Takeshi SHIMOYAMA Takuya HAYASHI Tsuyoshi TAKAGI
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2014/01/01 Vol. E97-A No. 1 pp. 236-244 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Foundations Keyword: pairing-based cryptosystems, discrete logarithm problem, finite field, key length,
	Summary \| Full Text:PDF

Preimage Attacks on the Step-Reduced RIPEMD-128 and RIPEMD-160 Chiaki OHTAHARA Yu SASAKI Takeshi SHIMOYAMA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2012/10/01 Vol. E95-A No. 10 pp. 1729-1739 Type of Manuscript: PAPER Category: Cryptography and Information Security Keyword: RIPEMD-128, RIPEMD-160, hash, preimage, meet-in-the-middle,
	Summary \| Full Text:PDF

Forgery Attacks on Time-Stamp, Signed PDF and X.509 Certificate Kouichi ITOH Tetsuya IZU Wakaha OGATA Takeshi SHIMOYAMA Masahiko TAKENAKA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/01/01 Vol. E92-A No. 1 pp. 67-75 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Digital Signature Keyword: Bleichenbacher's forgery attack, RSASSA-PKCS-v1_5, time-stamp, PDF, X.509 certificate, Acrobat, Acrobat Reader,
	Summary \| Full Text:PDF

A Strict Evaluation on the Number of Conditions for SHA-1 Collision Search Jun YAJIMA Terutoshi IWASAKI Yusuke NAITO Yu SASAKI Takeshi SHIMOYAMA Thomas PEYRIN Noboru KUNIHIRO Kazuo OHTA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2009/01/01 Vol. E92-A No. 1 pp. 87-95 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Hash Function Keyword: hash function, collision search, SHA-1, disturbance vector,
	Summary \| Full Text:PDF

Development of the Lead-Free Brush Material for the High-Load Starter Ryoichi HONBO Youichi MURAKAMI Koichiro SAWA Hiroyuki WAKABAYASHI Naruhiko INAYOSHI Kyoji INUKAI Takeshi SHIMOYAMA Naoki MORITA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2007/08/01 Vol. E90-C No. 8 pp. 1634-1642 Type of Manuscript: PAPER Category: Electromechanical Devices and Components Keyword: carbon brush, starter, lead, wear, tribology,
	Summary \| Full Text:PDF

Development of the Lead-Free Carbon Brush Material for Starters Ryoichi HONBO Koichiro SAWA Youichi MURAKAMI Hiroyuki WAKABAYASHI Naruhiko INAYOSHI Kyoji INUKAI Takeshi SHIMOYAMA Naoki MORITA
Publication: IEICE TRANSACTIONS on Electronics Publication Date: 2005/08/01 Vol. E88-C No. 8 pp. 1675-1681 Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--) Category: Automotive Application Keyword: carbon brush, lead free, starter, wear, corrosion,
	Summary \| Full Text:PDF

Theoretical Analysis of χ² Attack on RC6 Masahiko TAKENAKA Takeshi SHIMOYAMA Takeshi KOSHIBA
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2004/01/01 Vol. E87-A No. 1 pp. 28-36 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Symmetric Cipher Keyword: RC6, χ² attack, transition matrix,
	Summary \| Full Text:PDF

An Efficient Interpolation Attack Shiho MORIAI Takeshi SHIMOYAMA Toshinobu KANEKO
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2000/01/25 Vol. E83-A No. 1 pp. 39-47 Type of Manuscript: Special Section PAPER (Special Section on Cryptography and Information Security) Category: Keyword: cryptanalysis, block cipher, interpolation attack, computer algebra system, SNAKE,
	Summary \| Full Text:PDF

Improved Higher Order Differential Attack and Its Application to Nyberg-Knudsen's Designed Block Cipher Takeshi SHIMOYAMA Shiho MORIAI Toshinobu KANEKO Shigeo TSUJII
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 1999/09/25 Vol. E82-A No. 9 pp. 1971-1980 Type of Manuscript: PAPER Category: Information Security Keyword: block cipher, higher order differential attack, KN cipher, algebraic equation,
	Summary \| Full Text:PDF