摘要
So far, most of the proposed group key exchange (GKE) protocols do not consider the attack when the adversary reveals the parties' ephemeral private keys without their long-term private keys, so these GKE protocols are insecure on this attack. In this paper, for resisting above attack, we propose a dynamic authenticated group key exchange (AGKE) protocol in the ID-based setting. Different from previous ID-based protocols, our protocol does not utilize bilinear pairings, which makes it more efficient. At last, we analyze the security of the protocol in the cCK (enhanced Canetti-Krawczyk) security model.
So far, most of the proposed group key exchange (GKE) protocols do not consider the attack when the adversary reveals the parties' ephemeral private keys without their long-term private keys, so these GKE protocols are insecure on this attack. In this paper, for resisting above attack, we propose a dynamic authenticated group key exchange (AGKE) protocol in the ID-based setting. Different from previous ID-based protocols, our protocol does not utilize bilinear pairings, which makes it more efficient. At last, we analyze the security of the protocol in the cCK (enhanced Canetti-Krawczyk) security model.
基金
Supported by the National Natural Science Foundation ofChina (60773035)