Abstract
Broadcast authentication is a fundamental security service in distributed sensor networks. This paper presents a new sensor broadcast authentication scheme based on muTESLA. muTESLA is a broadcast authentication protocol whose scalability is limited by its unicast-based initial parameter distribution. The proposed scheme use double key chains to solve the problem to distribute the muTESLA parameters to a large number of sensor nodes. The analysis shows that this scheme is efficient and practical, and can achieve better performance than the previous approaches
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