Cryptology ePrint Archive: Report 2008/326
Two attacks on a sensor network key distribution scheme of Cheng and Agrawal
M. B. Paterson and D. R. Stinson
Abstract: A sensor network key distribution scheme
for hierarchical sensor networks was recently proposed by
Cheng and Agrawal. A feature of their scheme is that
pairwise keys exist between any pair of high-level nodes
(which are called cluster heads) and between any (low-level)
sensor node and the nearest cluster head. We present two attacks on their scheme.
The first attack can be applied for certain
parameter sets. If it is applicable, then this attack can result in the
compromise of most if not all of
the sensor node keys after a small number of cluster heads are compromised.
The second attack can always be applied, though it is weaker.
Category / Keywords: cryptographic protocols / key management
Publication Info: submitted for publication
Date: received 28 Jul 2008
Contact author: dstinson at uwaterloo ca
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Version: 20080803:025450 (All versions of this report)
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