Abstract
Recently, Wang et al. (J Secur Commun Netw 5(12):1363---1374, 2012) proposed a self-healing group key distribution (SGKD) scheme for resource-constrained wireless networks. They claimed that their proposed SGKD scheme satisfies forward security, backward security and can resist collusion attack. Unfortunately, we found some security flaws in their scheme. In this paper, we present a method to attack this scheme. The attack illustrates that this scheme does not satisfy forward security, which also directly breaks the collusion resistance capability. We also propose an improved scheme with constant storage overhead and satisfactory security.
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