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학술대회 Side Channel Attack on Digital Door Lock with Vibration Signal Analysis: Longer Password does not Guarantee Higher Security Level
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하영목, 장수희, 김광원, 윤지원
International Conference on Multisensor Fusion and Integration for Intelligent Systems (MFI) 2017, pp.103-110
17JS1400, 무인이동체 미션컴퓨터용 개방형 SW 프레임워크 기술 개발, 송문섭
Digital door lock system is a widely used physical security system. It restricts unauthorized accesses and protects assets or private spaces. However, once its password has been exposed to unauthorized people, it becomes useless. In this paper, we propose a novel side channel attack model, which enables a cracking of a digital door lock password. We noted that when people press the key-lock button, irrespective of how careful they are, the generated vibrations differ with the location of the button pressed. Our model uses and analyzes the natural phenomenon of vibration to infer passwords. Under our attack, the ease of password inference depends on the number of distinguishable buttons rather than password length. The results of our experiments contradict the commonly held security principle that a longer password guarantees a higher level of security.
KSP 제안 키워드
Higher Level of Security, Password inference, Password length, Physical security, Security level, Side Channel Attacks, attack model, door lock, natural phenomenon, security system, vibration signal analysis