Papers - OKAZAKI Naonobu
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Proposal of a Synchronous Data Transfer Protocol Suitable for FDDI with RSVP Mechanism Reviewed
共著者：M. Yabe, T. Fujii, Y. Koui, T. Ideguchi, Y. Baba, N. Okazaki
Proc. the 1998 IEEE Asia Pacific Conference on Communications, pp.191-195 1998.10
Language：English Publishing type：Research paper (international conference proceedings)
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Proposal of a Key Sharing Method for Secure Communication Systems Reviewed
Mirang PARK, Akira WATANABE, Naonobu OKAZAKI and Tetsuo IDEGUCHI
Proc. the Taiwan-Japan Joint Workshop on The Latest Development of Telecommunication Research (TJCOM98) 113 - 118 1998.1
Language：English Publishing type：Research paper (international conference proceedings)
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Proposal and Evaluation for Application Methods of RSVP over FDDI Reviewed
Yuuji KOUI, Naonobu OKAZAKI, Tetsuo IDEGUCHI, Shoichiro SENO, Masayuki YABE and Akira WATANABE
Proc. the 1997 International Symposium on Communications (ISCOM’97) 404 - 408 1997.12
Language：English Publishing type：Research paper (international conference proceedings)
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Application of RSVP over FDDI using Synchronous Data Transmission Class Method Reviewed
共著者：M. Yabe, N. Okazaki, Y. Koui, T. Ideguchi, S. Seno, N. Tsubone
Proc. the Third Asia-Pacific Conference on Communications, pp.187-191 1997.12
Language：English Publishing type：Research paper (international conference proceedings)
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Performance Estimate of Compression Characteristics on Wide Area Network Reviewed
共著者：Y. Saito, N. Okazaki, S. Seno, T. Ideguchi, Y. Koui, M. Yabe
Proc. the Third Asia-Pacific Conference on Communications, pp.1323-1327 1997.12
Language：English Publishing type：Research paper (international conference proceedings)
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Proposal and Evaluation of a New Time Critical Communication Protocol on LAN Reviewed
共著者：N. Okazaki, T. Fujii, S. Seno, Y. Koui, T. Ideguchi, M. Yabe
Proc. the Asia-Pacific Symposium on Information and Telecommunication Technologies, pp.141-145 1997.3
Language：English Publishing type：Research paper (international conference proceedings)
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A New Test Sequence Generation Method for Interoperability Testing Reviewed
共著者：N. Okazaki, M. R. Park, K. Takahashi, N. Shiratori
Protocol Test Systems 7th workshop, Chapman & Hall, pp.243 - 258 1994.6
Authorship：Lead author Language：English Publishing type：Research paper (scientific journal)
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Test Sequence Generation for Multiprocess Communication Systems Reviewed
共著者：N. Okazaki, M. R. Park, M. Ohta, K. Takahashi
Proc. the 1993 Asia Pacific Conference on Communications, pp.210-214 1993.8
Language：English Publishing type：Research paper (international conference proceedings)
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Test Sequence Generation for Interoperability Testing Considering Parallel Processes Reviewed
Naonobu OKAZAKI, Mi Rang PARK, Setsuko MIKAMI, Kaoru TAKAHASHI and Masataka OHTA
Proc. the 6th Joint Conference on Communication, Networks and Switching Systems 107 - 112 1993.6
Language：English Publishing type：Research paper (international conference proceedings)
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MASUDA SHINYA, SUZUKI HIDEKAZU, OKAZAKI NAONOBU, WATANABE AKIRA
IPSJ Journal 47 ( 7 ) 2258 - 2266 2006.7
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：Information Processing Society of Japan (IPSJ)
Threats to network security have become a serious problem, and encryption technologies for communications are an important issue these days. Although the security of IPsec ESP (a typical existing cipher communication technology) is strong, it has such problems that it can not be used in the environment where it coexists with NAT and firewalls, and that there also causes some degradation of throughput. For such reasons, ESP is used only for some limited applications such as VPN (Virtual Private Network). In this paper, we propose a new cipher communication protocol, called PCCOM (Practical Cipher COMmunication), that can verify the identity of the corresponding counterpart and assure the integrity of packets in the environment where it coexists with NAT and firewalls, without changing the format of the original packets. To confirm the effectiveness of PCCOM, we installed a trial system in FreeBSD, and confirmed the coexistibility with NAT and firewalls. We also measured its throughput, and good performance was confirmed owing to "no change" of the packet format.
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色の恒常性を利用したCAPTCHAの機械攻撃耐性の評価と分析
永井 麻裕, 臼崎 翔太郎, 油田 健太郎, 山場 久昭, 椋木 雅之, 岡崎 直宣
情報処理学会火の国情報シンポジウム2022論文集 ( B12-4 ) 1 - 8 2022.3
Authorship：Last author Language：Japanese Publishing type：Research paper (other academic)
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ウィンドウサイズ調整型監視によるリアルタイム性DDoS攻撃検知手法の検討
溝口 李佳, 臼﨑 翔太郎, 油田 健太郎, 山場 久昭, 岡崎 直宣
情報処理学会火の国情報シンポジウム2022論文集 ( B12-5 ) 1 - 8 2022.3
Authorship：Last author Language：Japanese Publishing type：Research paper (other academic)
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継続的な認証及び異なる歩行速度での二つの端末を用いた異常検知による歩行認証の研究
渡辺 一樹、油田 健太郎、岡崎 直宣、朴 美娘
IPSJ SIG Technical Reports 2021-SPT-41 ( 16 ) 2021.3
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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ウェアラブル端末を用いた覗き見耐性を持つジェスチャー認証手法の提案と評価
嘉藤 鴻介、渡辺 一樹、油田 健太郎、岡崎 直宣、朴 美娘
IPSJ SIG Technical Reports 2021-SPT-41 ( 17 ) 2021.3
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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分散機械学習における勾配の 異常検知を用いたブロックチェーンシステムの提案とその実現性の評価
長友 誠、油田 健太郎、岡崎 直宣、朴 美娘
IPSJ SIG Technical Reports 2020-CSEC-88 ( 22 ) 2020.3
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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スマー トウォッチにおけるジェスチャを用いた個人認証方式の提案と評価
長友 誠、小関朋奈，渡辺 一樹、油田 健太郎、岡崎 直宣、朴 美娘
2020 Symposium on Cryptography and Information Security (SCIS2020) ( 1E2-1 ) 2020.1
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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ブロックチェーンを用いた不正ログイン対策の検討
藤 竜成, 臼崎 翔太郎, 油田 健太郎, 朴 美娘, 白鳥 則郎, 岡崎 直宣
CSS2019 1336 - 1342 2019.10
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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ブロックチェーンを用いた分散機械学習におけるパラメータ異常検知システムの提案
長友 誠, 油田 健太郎, 岡崎 直宣, 朴 美娘
CSS2019 1343 - 1348 2019.10
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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複数ウィンドウサイズの効率的監視によるバースト形態に依らないDDoS攻撃検出手法の検討
臼崎 翔太郎, 油田 健太郎, 山場 久昭, 朴 美娘, 岡崎 直宣
情報処理学会マルチメディア，分散，協調とモバイルシンポジウム（DICOMO2019）論文集 495 - 504 2019.7
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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スマートロックにおける異常検知を用いた二つの端末の加速度による歩行認証の提案 Reviewed
渡辺 一樹, 長友 誠, 油田 健太郎, 岡崎 直宣, 朴 美娘
情報処理学会マルチメディア，分散，協調とモバイルシンポジウム（DICOMO2019）論文集 1155 - 1160 2019.7
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)