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논문 기본 정보

자료유형
학술저널
저자정보
Yeongjin Mun (Chungnam National University) Hyungseup Kim (Chungnam National University) Byeoncheol Lee (Chungnam National University) Kwonsang Han (Chungnam National University) Jaesung Kim (Chungnam National University) Ji-Hoon Kim (Ewha Womans University) Byong-Deok Choi (Hanyang University) Dong Kyue Kim (Hanyang University) Hyoungho Ko (Chungnam National University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.19 No.3
발행연도
2019.6
수록면
260 - 269 (10page)
DOI
10.5573/JSTS.2019.19.3.260

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초록· 키워드

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Invasive physical attacks on integrated circuits (ICs), such as de-packaging, focused ion beam (FIB) chip editing, and micro-probing attempts, constitute security threats for chips with potentially valuable information, such as smart cards. Using a state-of-the-art circuit-editing technique, an attacker can remove an IC’s top metal layer, leaving its secure information exposed to micro-probing attacks. Security ICs can be seriously threatened by such attacks and thus require on-chip countermeasures. Conventional active shields, however, have difficulty coping with physical attacks based on FIB chip editing (i.e., bypassing the top metal shield). This study presents a novel countermeasure against physical attacks based on the use of a reconfigurable metal shield for both top metal removal and microprobing attack detection. This shield consists of two circuits: an FIB chip editing detection circuit consisting of a random number generator and a micro-probing attempt detection circuit consisting of two conditionally synchronized ring oscillators. Both circuits share a randomly reconfigured top metal shield, which represents a promising solution for security against state-of-the-art invasive attacks.

목차

Abstract
I. INTRODUCTION
II. RECONFIGURABLE TOP METAL SHIELD
III. EXPERIMENTAL RESULTS
IV. CONCLUSIONS
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