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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 17 of 17  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
NS, IN
(Joint)
2022-03-11
14:50
Online Online Enhancing Resilience of an MQTT Broker Using Immunity-Based Attack Detection -- Detection and Prevention of DoS Attacks against Use-After-Free Vulnerabilities --
Takeshi Okamoto (KAIT) NS2021-158
Smartification of public services is being promoted, but smart public services are at risk of cyberattacks. One of cyber... [more] NS2021-158
pp.212-217
NS, IN
(Joint)
2018-03-02
15:20
Miyazaki Phoenix Seagaia Resort Method for Generating a Data Set to Detect Cyber Attacks for Autonomous and Distributed Internet Security Infrastructure
Yusei Katsura, Hiroyuki Kimiyama (Tokyo Denki Univ.), Akihiro Nakao (Tokyo Univ.), Naoki Yonezaki, Tomoaki Tsutsumi, Kaoru Sano (Tokyo Denki Univ.), Takeshi Okamoto, Mitsuru Maruyama (Kanagawa Institutes of Technology), Hiroshi Kobayashi (Tokyo Denki Univ.) NS2017-238
We proposed "Autonomous and distributed Internet security (AIS) infrastructure" that enables to protect our resources on... [more] NS2017-238
pp.397-401
IA, IN
(Joint)
2017-12-15
14:10
Hiroshima Hiroshima City Univ. A study of gini importance-based header feature selection methods for cyber attack detection
Yuta Kazato, Yuichi Nakatani, Takeshi Okamoto, Akira Shibata (NTT) IN2017-61
Growing the expansion of network services and IoT devices, the risk of cyber attacks is increased by high-frequency and ... [more] IN2017-61
pp.91-96
MBE, BioX 2017-07-29
17:25
Tokushima Tokushima University Security Evaluation of USB-Based Fingerprint Authentication Products under Spoofing Attacks using a Forged Fingerprint with Conductive Ink
Takeshi Okamoto, Kaito Tanimoto (Kanagawa Inst. of Tech.) BioX2017-23 MBE2017-32
This paper presents tolerance and security evaluations of 22 USB-based fingerprint authentication products using a finge... [more] BioX2017-23 MBE2017-32
pp.73-76
BioX, ITE-ME, ITE-IST 2015-06-29
14:00
Ishikawa Kanazawa University, Kakuma Campus Security Evaluation for Leakage of a Fingerprint Image from USB-Based Fingerprint Authentication Systems
Daigo Sato, Takeshi Okamoto, Naoto Umehara (KAIT) BioX2015-6
The growing availability of fingerprint authentication systems has resulted in a drop in their price, and their increase... [more] BioX2015-6
pp.39-44
ICSS 2015-03-03
17:05
Okinawa Meio Univiersity A Study on CAPTCHA System Using Differential Awkwardness-Objects
Michitomo Yamguchi (Meiji Univ.), Takeshi Okamoto (Tsukuba Univ. of Tech.), Hiroaki Kikuchi (Meiji Univ.) ICSS2014-72
CAPTCHAs have been accepted as a technique which prevents unauthorized access by bots. Several researchers point out tha... [more] ICSS2014-72
pp.55-60
NS, OCS, PN
(Joint)
2012-06-21
13:55
Yamagata Yamagata Univ. Long-haul Transmission of 127 Gb/s PM-QPSK Signal with Real-Time DSP-based full CD Compensation at the Receiver
Manabu Arikawa, Takeshi Okamoto, Mitsunori Muraki, Daisaku Ogasahara, Emmanuel Le Taillandier de Gabory, Toshiharu Ito, Kiyoshi Fukuchi (NEC) OCS2012-10
(Advance abstract in Japanese is available) [more] OCS2012-10
pp.7-12
CPM, OPE, R 2010-04-16
13:50
Tokyo Kikai-Shinko-Kaikan Bldg. 10Gb/s-80km Transmission Characteristics of a Compact Tunable Light Source Monolithically Integrated with Mach-Zehnder Modulator via DC Mirror
Takeshi Okamoto, Kenji Mizutani, Kiyotaka Tsuruoka, Shinya Sudo, Mineto Sato, Koji Kudo, Tomoaki Kato, Kenji Sato (NEC) R2010-3 CPM2010-3 OPE2010-3
Recently, in order to reduce footprint of the transmitters and transponders, small form factor modules (TOSA, etc.) have... [more] R2010-3 CPM2010-3 OPE2010-3
pp.11-15
LQE, CPM, EMD, OPE 2008-08-29
09:25
Miyagi Touhoku Univ. A Compact Widely Wavelength-Tunable Laser Diode Monolithically Integrated with a Ring/MZI Loop-Filter
Takeshi Okamoto, Shinya Sudo, Kiyotaka Tsuruoka, Mads L. Nielsen, Kenji Mizutani, Kenji Sato, Koji Kudo (NEC) EMD2008-46 CPM2008-61 OPE2008-76 LQE2008-45
Widely wavelength-tunable lasers with low power consumption and low cost are indispensable for dense wavelength division... [more] EMD2008-46 CPM2008-61 OPE2008-76 LQE2008-45
pp.75-78
SANE 2008-06-26
14:15
Ibaraki Tsukuba Space Center (JAXA) Design of Electric Power System of Quasi-Zenith Satellite -1 (QZS-1)
Shirou Kawakita, Akihiro Matsumoto, Noriyasu Inaba, Koji Terada (JAXA), Hideaki Koakutsu, Takashi Tazawa, Masato Kudo, Takeshi Okamoto (MELCO) SANE2008-20
Electric power system of the Quasi-Zenith Satellite - 1 (QZS-1) has been developed for higher robustness and survivabili... [more] SANE2008-20
pp.41-44
ISEC 2008-05-16
16:35
Tokyo Kikai-Shinko-Kaikan Bldg. Strongly Unforgeable ID-based Signatures Without Random Oracles
Chifumi Sato (C4 Technology), Takeshi Okamoto, Eiji Okamoto (Univ. of Tsukuba) ISEC2008-15
There is an open problem to construct ID-based signature schemes which satisfy strongly EUF-ID-CMA, without random oracl... [more] ISEC2008-15
pp.99-106
LQE, OPE, OCS 2007-11-01
16:15
Fukuoka   Wideband External Cavity Wavelength Tunable Laser by Utilizing an SOA with Coupled Quantum Well Active Layer
Koji Kudo, Shinya Sudo, Mads L. Nielsen, Kenji Mizutani, Takeshi Okamoto, Kiyotaka Tsuruoka, Takao Morimoto, Tomoaki Kato, Kenji Sato (NEC) OCS2007-52 OPE2007-107 LQE2007-93
We have developed a wideband SOA as gain chip of a wide band (C+L) tunable laser by introducing coupled QWs. Low thresho... [more] OCS2007-52 OPE2007-107 LQE2007-93
pp.57-60
ISEC 2007-09-07
11:40
Tokyo Kikai-Shinko-Kaikan Bldg. Sender Authenticated Key Agreements Without Random Oracles
Chifumi Sato (C4 Technology), Takeshi Okamoto, Eiji Okamoto (Univ. of Tsukuba) ISEC2007-80
The purpose of this paper is to study sender authenticated key agreements by a third party, which uses the received para... [more] ISEC2007-80
pp.49-55
ISEC 2007-05-18
15:10
Tokyo Kikai-Shinko-Kaikan Bldg. A multiplication formula on degenerate divisors of genus 4 hyperelliptic curves
Naoki Kanayama, Takehiro Yamaguchi, Takeshi Okamoto, Eiji Okamoto (Tsukuba Univ.) ISEC2007-11
We show an pairing-friendly genus 4 hyperelliptic curve over finite fields of characteristic 2 and prove an scalar multi... [more] ISEC2007-11
pp.69-76
ISEC 2006-12-13
13:20
Tokyo Kikai-Shinko-Kaikan Bldg. Proposal for an improvement of computing Twisted Ate pairing
Seiichi Matsuda, Naoki Kanayama, Takeshi Okamoto, Eiji Okamoto (Tsukuba Univ.)
 [more] ISEC2006-106
pp.29-34
ISEC, IPSJ-CSEC, SITE 2005-07-21
13:00
Iwate Iwate Prefectural University Construction of Oblivious Signatures
Nobuyuki Shiina, Takeshi Okamoto, Eiji Okamoto (Tsukuba Univ.)
(To be available after the conference date) [more] ISEC2005-31 SITE2005-29
pp.165-171
ISEC, LOIS 2004-11-09
10:15
Osaka Osaka Univ. Transformation-Free Proxy Cryptosystems with Limited Authorization
Lihua Wang (Tsukuba Univ.), Zhenfu Cao (Shanghai Jiao Tong Univ.), Eiji Okamoto, Ying Miao, Takeshi Okamoto (Tsukuba Univ.)
In this paper transformation-free proxy cryptosystems with limited
authorization (TFP systems) are studied. The TFP sys... [more]
ISEC2004-88 OIS2004-55
pp.23-28
 Results 1 - 17 of 17  /   
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