Towards Secure and Practical MACs for Body Sensor Networks


Gong, Z. and Hartel, P.H. and Nikova, S.I. and Zhu, Bo (2009) Towards Secure and Practical MACs for Body Sensor Networks. [Report]

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Abstract:Wireless sensor network (WSN) commonly requires lower level security for public information gathering, whilst body sensor network (BSN) must be secured with strong authenticity to protect personal health information. First in this paper, some practical problems with the Message Authentication Codes (MACs), which are suggested in the current security architectures for WSN, are reconsidered. The analysis exploits the fact that the recommended MACs for WSN, e.g., TinySec (CBC-MAC), MiniSec (OCB-MAC), and SenSec (XCBC-MAC), are not exactly suitable for BSN. Particularly a dedicated attack is elaborated on the XCBC-MAC. Considering the hardware limitations of BSN, we propose a tunable lightweight MAC based on the \textsf{PRESENT} block cipher, which is named \textsf{TuLP}. A 128-bit variant \textsf{TuLP-128} is proposed for a higher resistance against internal collisions. Compared to the existing schemes, our lightweight MACs show better performance and higher energy-efficiency at lower memory usage.
Item Type:Report
Electrical Engineering, Mathematics and Computer Science (EEMCS)
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