スマートフォンを利用したサイドチャネル情報の取得に関する基礎研究

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2023/12/01

タイトル(英語): Fundamental Study for Acquiring Side-Channel Information Using Rolling Shutter Effect

著者名: 嶋野　裕一郎（電気通信大学大学院 情報理工学研究科 情報学専攻），宮原　大輝（電気通信大学大学院 情報理工学研究科 情報学専攻），崎山　一男（電気通信大学大学院 情報理工学研究科 情報学専攻）

著者名(英語): Yuichiro Shimano (Department of Informatics, Graduate School of Informatics and Engineering, The University of Electro-Communications), Daiki Miyahara (Department of Informatics, Graduate School of Informatics and Engineering, The University of Electro-Communications), Kazuo Sakiyama (Department of Informatics, Graduate School of Informatics and Engineering, The University of Electro-Communications)

キーワード: ローリングシャッター，イメージセンサ，LED照明，音声再構成，サイドチャネル解析　　rolling shutter，image sensor，LED lighting，audio reconstruction，side channel information

要約(英語): LED devices are becoming increasingly popular because they are more energy-efficient lighting devices than fluorescent ones. Currently, LED devices in IoT devices enable additional functionality, such as network and speaker functions. However, due to those functionalities, we encounter a new risk that LED devices may leak unintended signals, i.e., side-channel information. In this paper, we use audio signals as the side-channel information contained in LED lights. The reason for employing the audio signal is that it is not only a real threat but also suitable for investigating the frequency limits of leaked side-channel information. We use smartphone cameras to obtain the LED light and try to reconstruct the audio signal in the experiments. As a result, we show that information retrieval from the original audio is feasible. Furthermore, the image sensor's specification, such as shutter mechanism, frame rate, and blanking period, is highly related to the precision in acquiring the side-channel information.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.143 No.12 （2023） 特集：電気・電子・情報関係学会東海支部連合大会

本誌掲載ページ: 1180-1186 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/143/12/143_1180/_article/-char/ja/