New Identity-Based Threshold Broadcast Encryption for Ad Hoc Networks

摘要

In this paper, we propose two efficient ID-based threshold broadcast encryption schemes in the standard model for a mobile ad hoc network. In the first scheme, PKG chooses the threshold value and the broadcaster can choose the privileged set. But in our second scheme, the broadcaster can choose the privileged set and the threshold value at the time of encryption. In addition, our schemes are provable security under the decision modified bilinear Diffie-Hellman(MBDH) assumption.