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TouchKey : Touch to Generate Symmetric Keys by Skin Electric Potentials Induced by Powerline Radiation
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- Miao, Yuchen (author)
- Zhejiang Univ, Hangzhou, Peoples R China
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- Gu, Chaojie (author)
- Zhejiang Univ, Hangzhou, Peoples R China
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- Yan, Zhenyu (author)
- Chinese Univ Hong Kong, Hong Kong, Peoples R China
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- Lin, Qi (author)
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- (creator_code:org_t)
- Association for Computing Machinery (ACM), 2023
- 2023
- English.
- In: Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies-Imwut. - : Association for Computing Machinery (ACM). - 2474-9567. ; 7:2
- Journal article (peer-reviewed)
Abstract
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- Secure device pairing is important to wearables. Existing solutions either degrade usability due to the need of specific actions like shaking, or they lack universality due to the need of dedicated hardware like electrocardiogram sensors. This paper proposes TOUCHKEY, a symmetric key generation scheme that exploits the skin electric potential (SEP) induced by powerline electromagnetic radiation. The SEP is ubiquitously accessible indoors with analog-to-digital converters widely available on Internet of Things devices. Our measurements show that the SEP has high randomness and the SEPs measured at two close locations on the same human body are similar. Extensive experiments show that TOUCHKEY achieves a high key generation rate of 345 bit/s and an average success rate of 99.29%. Under a range of adversary models including active and passive attacks, TOUCHKEY shows a low false acceptance rate of 0.86%, which outperforms existing solutions. Besides, the overall execution time and energy usage are 0.44 s and 2.716 mJ, which make it suitable for resource-constrained devices.
Keyword
- Key generation
- wearables
- induced body electric potential
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Miao, Yuchen
- Gu, Chaojie
- Yan, Zhenyu
- Chau, Sze Yiu
- Tan, Rui
- Lin, Qi
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- Hu, Wen
- He, Shibo
- Chen, Jiming
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- Uppsala University
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