Abstract
We present an authenticated ID-based Group Key Agreement (GKA) protocol which requires only one round for its execution. The protocol is contributory, energy-balanced and does not require an online TTP. All these properties and in particular the minimum round requirement, makes the protocol especially suited for ad hoc networks. In the paper, we will demonstrate the security properties of the new GKA protocol and present its communication/computation efficiency. Finally, we will compare the new protocol with all the one-round GKA protocols proposed so far in the literature and show that it outperforms all the ID-based protocols of this category.
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