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Published in:
2010 | OriginalPaper | Chapter
AES Data Encryption in a ZigBee Network: Software or Hardware?
Authors : Geoffrey Ottoy, Tom Hamelinckx, Bart Preneel, Lieven De Strycker, Jean-Pierre Goemaere
Published in: Security and Privacy in Mobile Information and Communication Systems
Publisher: Springer Berlin Heidelberg
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This paper describes the experiments which have been conducted to determine the optimal implementation concept for AES (Advanced Encryption Standard) data encryption in a ZigBee network [1,2]. Two concepts have been considered. The first one is a AES128-CBC hardware co-processor embedded on a Spartan 3A FPGA. The second configuration implements the same cryptographic algorithm on the processor which controls the ZigBee nodes. The ZigBee modules in the network contain an 8-bit microcontroller which takes care of the ZigBee protocol stack –and the encryption calculations in the second case. Both approaches are examined and compared. In this paper we show that –in general– a software implementation is feasible in a ZigBee network, though a low-power hardware cryptographic co-processor could prove to be useful in some cases.