Abstract
This study concerns security issues of the emerging Wireless Body Sensor Network (WBSN) formed by biomedical sensors worn on or implanted in the human body for mobile healthcare applications. A novel authenticated symmetric-key establishment scheme is proposed for WBSN, which fully exploits the physiological features obtained by network entities via the body channel available in WBSN but not other wireless networks. The self-defined Intrinsic Shared Secret (ISS) is used to replace the pre-deployment of secrets among network entities, which thus eliminates centralized services or authorities essential in existing protocols, and resolves the key transport problem in the pure symmetric-key cryptosystem for WBSN as well. The security properties of the proposed scheme are demonstrated in terms of its attack complexity and the types of attacks it can resist. Besides, the scheme can be implemented under a light-weight way in WBSN systems. Due to the importance of the ISS concept, the analysis on using false acceptance/false rejection method to evaluate the performance of ISS for its usage in the scheme is also demonstrated.
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Supported by the High Technology Research and Development Program of Jiangsu Province (No.BG2005001) and Hong Kong Innovation and Technology Fund (No.ITS/99/02).
Communication author: Bao Shudi, born in 1977, female, Ph.D. candidate, National Mobile Communications Research Lab, Southeast University, Nanjing 210096, China.
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Bao, S., Poon Carmen, C.Y., Shen, L. et al. Authenticated symmetric-key establishment for medical body sensor networks. J. of Electron.(China) 24, 421–427 (2007). https://doi.org/10.1007/s11767-006-0152-z
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DOI: https://doi.org/10.1007/s11767-006-0152-z
Key words
- Wireless Body Sensor Network (WBSN)
- Network security
- Authenticated key establishment
- Physiological feature