論文 - 油田 健太郎
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マーカーを用いたカメラと加速度センサによるセキュアデバイスペアリング手法の評価
長友誠, 油田健太郎, 岡崎直宣, 朴美娘
IPSJ SIG Technical Reports 2019年5月
記述言語：日本語 掲載種別：研究論文（研究会，シンポジウム資料等）
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Introduction of Fingerspelling for Realizing a User Authentication Method Using s-EMG 査読あり
Yamaba H., Inotani S., Usuzaki S., Takatsuka K., Aburada K., Katayama T., Park M., Okazaki N.
Advances in Intelligent Systems and Computing 927 693 - 701 2019年3月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Advances in Intelligent Systems and Computing
© 2019, Springer Nature Switzerland AG. At the present time, mobile devices such as tablet-type PCs and smart phones have widely penetrated into our daily lives. Therefore, an authentication method that prevents shoulder surfing is needed. We are investigating a new user authentication method for mobile devices that uses surface electromyogram (s-EMG) signals, not screen touching. The s-EMG signals, which are detected over the skin surface, are generated by the electrical activity of muscle fibers during contraction. Muscle movement can be differentiated by analyzing the s-EMG. Taking advantage of the characteristics, we proposed a method that uses a list of gestures as a password in the previous study. In order to realize this method, we have to prepare many gestures that are used to compose passwords. In this paper, we adopted fingerspelling as candidates of such gestures. We measured s-EMG signals of manual kana of The Japanese Sign Language syllabary and examined their ability for the use of passwords of the authentication method.
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Nagatomo M., Aburada K., Yamaba H., Okazaki N., Park M.
Advances in Intelligent Systems and Computing 927 683 - 692 2019年3月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Advances in Intelligent Systems and Computing
© 2019, Springer Nature Switzerland AG. Currently, IoT devices often use wireless technologies to communicate with each other. An example is ad-hoc device pairing such as wireless distribution of meeting materials from a PC to mobile device. The problem in this case is spoofing by an impersonator. In order to solve this problem, we proposed secure device pairing method using similarity between displacement data of a marker displayed on devices and acceleration data obtained from devices. We performed experiments to confirm similarity and whether impersonator can pair with the server. As a result, we found that similarity was low and unstable. Therefore, in this paper, we propose an extended method that marker changes at an interval. These sequence of markers displayed on the device is used to recognize the device by a camera in addition to calculation of the similarity. We performed 3 experiments to confirm the similarity displacement data and examined whether an eavesdropper outside the camera range can perform pairing. Also, we performed pairing of some device together. As a result, average similarity was higher than that of previous method and pairing of three devices succeeded at rate of about 70%.
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CHAMSIN: CaptcHA by caMouflaged StrINg 査読あり
Mukunoki Masayuki, Yamaba Hisaaki, Usuzaki Shotaro, Aburada Kentaro, Katayama Tetsuro, Park Mirang, Okazaki Naonobu
IEICE Communications Express 8 ( 3 ) 55 - 60 2019年3月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：一般社団法人 電子情報通信学会
We propose a new CAPTCHA scheme that uses random dot patterns (RDPs) to prevent highly-developed bots attacks. Human beings can recognize a moving figure filled by a RDP from a background that is filled by another RDP; however, it is impossible to find such figures when they are stationary. Since image recognition by bots is usually carried out frame by frame, it is hard for bots to recognize such moving figures. The proposed CAPTCHA scheme exploits this characteristic. Several experiments were carried out to confirm that the proposed CAPTCHA scheme is usable enough and has enough resistance against bot attacks.
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Investigation on Sharing Signatures of Suspected Malware Files Using Blockchain Technology 査読あり
Ryusei Fuji, Shotaro Usuzaki, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama, Mirang Park, Norio Shiratori, and Naonobu Okazaki
Lecture Notes in Engineering and Computer Science: Proceedings of The International MultiConference of Engineers and Computer Scientists 2019 2019年3月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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Implementation of Arduino Simulator ADVIS Visualizing the Value of Voltage on the Circuit 査読あり
Tetsuro Katayama and Tatsumi Nishida and Yoshihiro Kita and Hisaaki Yamaba and Kentaro Aburada, Naonobu Okazaki
Journal of Robotics, Networking and Artificial Life 5 ( 4 ) 249 - 252 2019年3月
記述言語：英語 掲載種別：研究論文（学術雑誌）
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Application of Pairwise Testing to Test Cases by Boundary Value Analysis in BWDM 査読あり
Futa Hirakoba, Tetsuro Katayama, Yoshihiro Kita, Hisaaki Yamaba, Kentaro Aburada, Naonobu Okazaki
[Proc. 2019 Int’l Conf. on Artificial Life and Robotics (ICAROB 2019) 2019年2月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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Implementation of an Arduino Simulator to Support Circuit Design 査読あり
Tatsumi Nishida, Tetsuro Katayama, Yoshihiro Kita, Hisaaki Yamaba, Kentaro Aburada, Naonobu Okazaki
[Proc. 2019 Int’l Conf. on Artificial Life and Robotics (ICAROB 2019) 2019年2月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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Tamias: a Syntax File Checker for Parsing Expression Grammar 査読あり
Toshihiro Miyaji, Tetsuro Katayama, Yoshihiro Kita, Hisaaki Yamaba, Kentaro Aburada, Naonobu Okazaki
[Proc. 2019 Int’l Conf. on Artificial Life and Robotics (ICAROB 2019) 2019年2月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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Development of Library Fescue Extracting Elements of Attributes and Operations of Class Diagram in UML 査読あり
Keisuke Mori, Tetsuro Katayama, Yoshihiro Kita, Hisaaki Yamaba, Kentaro Aburada, Naonobu Okazaki
[Proc. 2019 Int’l Conf. on Artificial Life and Robotics (ICAROB 2019) 2019年2月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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Use of access characteristics to distinguish legitimate user traffic from DDoS attack traffic 査読あり
Aburada K., Arikawa Y., Usuzaki S., Yamaba H., Katayama T., Park M., Okazaki N.
Artificial Life and Robotics 2019年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Artificial Life and Robotics
© 2019, International Society of Artificial Life and Robotics (ISAROB). Distributed denial of service attacks are a serious threat in the current information society, where the Internet plays an important role as infrastructure. We have been studying ways to mitigate these attacks using a method that distinguishes between legitimate users and attacks. Our previous method was not sufficient because it only analyzed access logs after the attack. In this study, we propose a new method that can distinguish between legitimate users and attacks while the services are running. When the IDS detects an attack, a quarantine server distinguishes legitimate users using access characteristics. The access characteristics are: (1) user follows links, (2) sender accessed a popular page, and (3) the sender’s current average transmission interval. Our experiments confirmed that the proposed method can distinguish between legitimate users and attacks.
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覗き見耐性を持つ小型タッチスクリーン端末における個人認証方式の提案 査読あり
長友誠，渡辺一樹，油田健太郎，岡崎直宣，朴美娘
[2019 Symposium on Cryptography and Information Security (SCIS2019) 2019年1月
記述言語：日本語 掲載種別：研究論文（研究会，シンポジウム資料等）
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A bot detection method focused on HTTP request transmission behavior of clients 査読あり
Ryusei Fuji, Shotaro Usuzaki, Kentaro Aburada, Hisaaki Yamaba, Tetsuro Katayama, Naonobu Okazaki, Mirang Park
Proc. 24rd Int'l Sympo. on Artificial Life and Robotics 2019 (AROB 24rd 2019) 2019年1月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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A Proposal of New Reading Text CAPTCHA using Random Dot Patterns 査読あり
Yamaba H., Usuzaki S., Aburada K., Mukunoki M., Park M., Okazaki N.
Proceedings - 2018 6th International Symposium on Computing and Networking, CANDAR 2018 207 - 212 2018年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Proceedings - 2018 6th International Symposium on Computing and Networking, CANDAR 2018
© 2018 IEEE. According to the growth of troubles caused by malicious programs called bots, CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) comes to be an important role in the current information society. CAPTCHA identifies bots from legitimate human users by requiring some questions that are easy for humans to solve but difficult for bots. However, the progress of computing technology such as Optical Character Recognition (OCR) function. bots come to be able to solve present CAPTCHAs. In order to outcome such troublesome bots, more sophisticated CAPTCHA that requires the high cognitive ability of human beings is desired. In this paper, we propose a new CAPTCHA scheme that uses random dot patterns. Human beings can recognize a moving figure filled by a random dot pattern from a background that is filled by another random dot pattern; however, they lose the figure in the background when the figure pauses. Since image recognition by computer programs is usually carried out frame by frame, it is hard for bots to recognize such a moving figure filled by a random dot pattern from another random dot pattern background. The proposed CAPTCHA scheme exploits this characteristic of random dot patterns. This CAPTCHA requires users to answer a text filled by a random dot pattern that is moving on a background also filled by another random dot pattern. Several experiments were carried out to confirm that the proposed CAPTCHA scheme has enough resistance against bot attacks using representative image recognition methods. Results of the experiments showed that the image recognition methods cannot find out the answer text. Other experiments were also carried out to evaluate the usability of the proposed CAPTCHA scheme. The system usability scheme was adopted in the experiments. The obtained score was 89 that means this CAPTCHA scheme has high usability. These results showed that the CAPTCHA scheme is usable enough and has enough resistance against bot attacks.
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Proposal and evaluation of secure device pairing method with camera and accelerometer 査読あり
Nagatomo M., Aburada K., Okazaki N., Park M.
Proceedings - 2018 6th International Symposium on Computing and Networking Workshops, CANDARW 2018 310 - 315 2018年12月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：Proceedings - 2018 6th International Symposium on Computing and Networking Workshops, CANDARW 2018
© 2018 IEEE. With the advancement of wireless short-range technology, the number of mobile devices is also increasing. Consequently, devices often exchange information using wireless communications, but this communication has vulnerabilities, such as eavesdropping and man-in-the-middle attack. Therefore, it is necessary to perform secure pairing between devices before wireless communication begin. In this paper, we assume that devices are securely paired in limited space, such as a room using wireless communication. The method for secure pairing using Received signal strength (RSS) is simple, but RSS is easy to change due to environmental factors. Recently, pairing methods using camera and accelerometer are studied. However, these methods do not directly detect inclination of the device. We propose the one of secure device pairing method using camera and accelerometer. Our proposed method make the camera read a marker on the display of the device. The marker's inclination corresponds to the device's inclination, hence, we assume that the accuracy is higher than that of existing methods.
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青島地区における避難者の歩行速度を考慮した災害時の避難行動に関するシミュレーション
本田佳鈴，山場久昭，油田健太郎，岡崎直宣
[IPSJ SIG Technical Reports 1 - 8 2018年11月
記述言語：日本語 掲載種別：研究論文（研究会，シンポジウム資料等）
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被疑クライアントのHTTP リクエスト送信挙動に基づいたボット判定手法
藤竜成，山場久昭，油田健太郎，岡崎直宣
[IPSJ SIG Technical Reports 2018年11月
記述言語：日本語 掲載種別：研究論文（研究会，シンポジウム資料等）
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スライドウィンドウを利用したエントロピー手法による軽量なDDoS 攻撃検知手法の検討
臼崎翔太郎，山場久昭，油田健太郎，岡崎直宣
[IPSJ SIG Technical Reports 2018年11月
記述言語：日本語 掲載種別：研究論文（研究会，シンポジウム資料等）
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An Examination of Pairing Method with Camera and Acceleration Sensor 査読あり
Makoto Nagatomo, Kentaro Aburada, Naonobu Okazaki, Mirang Park
The 11th International Conference on Mobile Computing and Ubiquitous Networking 2018年10月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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スマートフォンとウェアラブル端末の加速度センサーを用いたスマートロックにおける歩行認証の検討 査読あり
渡辺一樹，長友誠，油田健太郎，岡崎直宣，朴美娘
コンピュー タセキュリティシンポジウム（CSS2018）論文集 173 - 178 2018年10月
記述言語：日本語 掲載種別：研究論文（学術雑誌）