Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
IT |
2011-07-22 11:00 |
Okayama |
Okayama University |
[Special Talk]
On sparse signals Yoshitaka Morikawa (Okayama Univ) IT2011-19 |
[more] |
IT2011-19 pp.53-58 |
ISEC |
2010-12-15 13:00 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
Higher Degree Traces for Rational Point Groups of Non Symmetric Ordinary Pairings Yasuyuki Nogami, Shoichi Takeuchi (Okayama Univ.), Tomoko K. Matsushima (Polytechnic Univ.), Satoshi Uehara (Univ. of Kitakyushu), Yoshitaka Morikawa (Okayama Univ.) ISEC2010-65 |
Recently, pairing--based cryptographies have received attentions. A part of its security is based on elliptic curve disc... [more] |
ISEC2010-65 pp.1-8 |
IT |
2010-07-22 11:05 |
Tokyo |
Kogakuin University |
Classification of MRCPs and Type-I CVMA Modified for Its Prime Field Multiplication Yusuke Takai, Kenta Nekado, Yasuyuki Nogami, Yoshitaka Morikawa, Hiroto Kagotani (Okayama Univ.) IT2010-14 |
Cyclic vector multiplication algorithm (CVMA) has been originally proposed as a vector multiplication algorithm for elem... [more] |
IT2010-14 pp.19-24 |
MI |
2010-07-09 14:05 |
Tokushima |
Tokusima Univ. Kogyo-Kaikan Bldg. |
An implementation of IIR Hilbert transformer for CT reconstructions Hiroshi Tsutsu (Okayama Univ.), Kazuhisa Hayashi (Hitachizosen Corp.), Hiroaki Morimoto (Okayama Univ.), Junichi Murakami (Kagawa college), Yoshitaka Morikawa (Okayama Univ.) MI2010-43 |
(To be available after the conference date) [more] |
MI2010-43 pp.33-37 |
MI |
2010-07-09 14:30 |
Tokushima |
Tokusima Univ. Kogyo-Kaikan Bldg. |
An IIR Ramp Filter for Filtered Backprojection Reconstruction of X-ray CT Kazuhisa Hayashi (Hitachizosen Corp.), Hiroshi Tsutsu, Hiroaki Morimoto (Okayama Univ.), Junichi Murakami (Kagawa college), Yoshitaka Morikawa (Okayama Univ.) MI2010-44 |
It will be soon possible to be able to observe the moving 3D heart by X-ray CT in real time. Helical CT (HCT) is said to... [more] |
MI2010-44 pp.39-44 |
ISEC, IPSJ-CSEC, SITE, ICSS [detail] |
2010-07-02 16:35 |
Aomori |
Hirosaki University |
Cost Estimates of CNTW Attack against EMV Signatures Yumi Sakemi (Okayama Univ.), Tetsuya Izu, Masahiko Takenaka (FUJITSU Lab.), Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) ISEC2010-36 SITE2010-32 ICSS2010-42 |
Specification of EMV signatures is an ISO/IEC 9796-2 compliant format with extra redundancy, and used for certifying cre... [more] |
ISEC2010-36 SITE2010-32 ICSS2010-42 pp.195-201 |
IT, ISEC, WBS |
2010-03-05 10:50 |
Nagano |
Nagano-Engineering Campus, Shinshu University |
Existing Probability of Gauss Period Normal Basis Kenta Nekado, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) IT2009-134 ISEC2009-142 WBS2009-113 |
Recently, for several pairing-based cryptographic applications, convenient basis which can construct extension field for... [more] |
IT2009-134 ISEC2009-142 WBS2009-113 pp.403-407 |
ISEC |
2009-12-16 15:20 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
GLV Method for Non-Supersingular Paring-Friendly Curves of Embedding Degree 1 Shoichi Takeuchi, Tetsuya Izuta, Yumi Sakemi, Kazushi Nishii, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) ISEC2009-76 |
Recently, some pairing-based cryptographies that uses a non-supersingular pairing-friendly curve whose order has large p... [more] |
ISEC2009-76 pp.37-41 |
ISEC |
2009-12-16 15:45 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
A Construction Method of Basis Conversion Matrix by Using Small Multiplicative Group for Cryptographic Applications Hidehiro Kato, Yasuyuki Nogami (Okayama Univ.), Satoshi Uehara (The Univ. of Kitakyushu), Yoshitaka Morikawa (Okayama Univ.) ISEC2009-77 |
Several methods for finding a basis conversion matrix between two different bases in extension field F_{p^m}... [more] |
ISEC2009-77 pp.43-50 |
ISEC |
2009-09-25 15:20 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
An Implementation of Tate Pairing with Non-Supersingular Curves of Embedding degree 1 Tetsuya Izuta, Yumi Sakemi, Kazushi Nishii, Shoichi Takeuchi, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) ISEC2009-48 |
Recently, pairing-based cryptographic applications such as ID-based cryptography have received much attention. On the ot... [more] |
ISEC2009-48 pp.59-64 |
ISEC, IPSJ-CSEC, SITE, ICSS [detail] |
2009-07-03 09:30 |
Akita |
Akita University |
Accelerating Cross Twisted Ate Pairing with Ordinary Pairing Friendly Curve of Composite Order That Has Two Large Prime Factors Yumi Sakemi, Kazushi Nishii, Tetsuya Izuta, Tatsuya Yuasa, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) ISEC2009-25 SITE2009-17 ICSS2009-39 |
Recently, pairing-based cryptographic applications such as ID-based cryptography have received much attention. On the ot... [more] |
ISEC2009-25 SITE2009-17 ICSS2009-39 pp.125-129 |
ISEC |
2009-05-22 13:50 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
A Consideration on Generating Ordinary Pairing Friendly Curve of Composite Order That Has Two Large Prime Factors Kazushi Nishii, Yumi Sakemi, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) ISEC2009-8 |
Recently, pairing-based cryptographic applications such as ID-basedcryptography have received muchattention.
On the ot... [more] |
ISEC2009-8 pp.51-54 |
ISEC |
2009-05-22 14:15 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
An Improvement of Cyclic Vector Multiplication Algorithm based on Gauss period Normal Basis Erika Yanagi, Kenta Nekado, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) ISEC2009-9 |
This paper first introduces cyclic vector multiplication algorithm (CVMA) that is a multiplication algorithm with Gauss ... [more] |
ISEC2009-9 pp.55-60 |
ISEC, SITE, IPSJ-CSEC |
2008-07-25 14:40 |
Fukuoka |
Fukuoka Institute of System LSI Design Industry |
A Consideration on Efficient Exponentiation in Extension Field for Pairing-based Cryptography Tomoki Yoshida, Hidehiro Kato, Kenta Nekado, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) ISEC2008-49 |
In recent years, pairing-based cryptographies such as ID-base cryptography and group signature have been studied.
These... [more] |
ISEC2008-49 pp.101-108 |
MI |
2008-01-26 13:00 |
Okinawa |
Naha-Bunka-Tenbusu |
Improvement of Image Quality in Denoising X-ray CT
-- Precise Estimation of Universal Gaussian Mixture Distribution Model -- Motohiro Tabuchi, Nobumoto Yamane, Yoshitaka Morikawa (Okayama Univ.) MI2007-127 |
The authors have been proposed a denoising method for the X-ray CT image using an adaptive Wiener filter(AWF) based on t... [more] |
MI2007-127 pp.349-356 |
ISEC |
2007-09-07 13:55 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. |
An Implementation of a Pairing-Based Group Signature Scheme with Verifier-Local Revocation Yuta Hira, Hidehiro Kato, Toru Nakanishi, Yasuyuki Nogami, Nobuo Funabiki, Yoshitaka Morikawa (Okayama Univ.) ISEC2007-83 |
Group signature scheme is one of signature schemes which keep signer's identity information secret. A pairing-based grou... [more] |
ISEC2007-83 pp.69-76 |
IT |
2007-07-20 11:00 |
Hyogo |
Kobe Univ. |
Normal Basis Efficient for Trace Calculation in Odd Characteristic Extension Field of Even Degree Kenta Nekado, Hiroaki Nasu, Ryo Nanba, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) IT2007-18 |
Some public-key cryptographies require an extension field as the definition field. When we implement arithmetic operatio... [more] |
IT2007-18 pp.19-22 |
IT |
2007-07-20 11:25 |
Hyogo |
Kobe Univ. |
Constructing Self-Dual Normal Bases in Odd-Degree Extension Field Yumi Sakemi, Hiroaki Nasu, Ryo Nanba, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) IT2007-19 |
A self-dual normal basis only exists in odd-degree extension field when characteristic $p$ is an odd prime.
However, a ... [more] |
IT2007-19 pp.23-27 |
ISEC, SITE, IPSJ-CSEC |
2006-07-20 09:30 |
Okayama |
Okayama Univ. |
A Translation Matrix between Two Isomorphic Extension Fields via Optimal Normal Basis Representation Ryo Nanba, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) |
Some extension fields efficient for fast implementation have been proposed. These extension fields adopt unique modular ... [more] |
ISEC2006-9 SITE2006-6 pp.1-6 |
ISEC, SITE, IPSJ-CSEC |
2006-07-20 09:55 |
Okayama |
Okayama Univ. |
Square Root Calculation Algorithm over Type-II All One Polynomial Field Hidehiro Kato (Okayama Univ.), Wang Feng, Yasuyuki Nogami, Yoshitaka Morikawa (Okayama Univ.) |
The authors proposes a square root (SQRT) algorithm in Fpm (m = r0r1 ・ ・ ・ rn.12d, ri : odd prime,
d > 0 : integer). We... [more] |
ISEC2006-10 SITE2006-7 pp.7-12 |