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Towards secure and practical MACs for body sensor networks. (English) Zbl 1252.94067
Roy, Bimal (ed.) et al., Progress in cryptology – INDOCRYPT 2009. 10th international conference on cryptology in India, New Delhi, India, December 13–16, 2009. Proceedings. Berlin: Springer (ISBN 978-3-642-10627-9/pbk). Lecture Notes in Computer Science 5922, 182-198 (2009).
Summary: In this paper, some practical problems with the message authentication codes (MACs), which are suggested in the current security architectures for wireless sensor network (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 body sensor network (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 PRESENT block cipher, which is named TuLP. A 128-bit variant TuLP-128 is proposed for a higher resistance against internal collisions. Compared to the existing schemes, our lightweight MACs are time and resource efficient on hardware-constrained devices.
For the entire collection see [Zbl 1178.94007].
94A60 Cryptography
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