An Improved Broadcast Authentication Protocol for Wireless Sensor Networks Based on the Self-Reinitializable Hash Chains

<div>Comparison of time consumption in publication, verification, and recombination phases. (a) The base station stores the whole hash chain. (b) The base station only stores the seed of hash chain. The lower right corner of the figure is a partial enlargement.</div>

Security and Communication Networks

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Figure 5

Figure 5: An Improved Broadcast Authentication Protocol for Wireless Sensor Networks Based on the Self-Reinitializable Hash Chains 