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Conference Paper Side Channel Attack on Digital Door Lock with Vibration Signal Analysis: Longer Password does not Guarantee Higher Security Level
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Authors
Youngmok Ha, Soo-Hee Jang, Kwang-Won Kim, Ji Won Yoon
Issue Date
2017-11
Citation
International Conference on Multisensor Fusion and Integration for Intelligent Systems (MFI) 2017, pp.103-110
Language
English
Type
Conference Paper
DOI
https://dx.doi.org/10.1109/MFI.2017.8170414
Project Code
17JS1400, The Development of Open SW Framework Technology for Mission Computer of Unmanned Vehicle, Song Moon Sub
Abstract
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 Keywords
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