中文摘要：

许多以前的广播加密计划能仅仅保证机密，但是不能为广播消息验证完整和真实性。在这篇论文，为特定的网络的一个广播 signcryption 协议基于基于簇的结构被建议。建议协议不仅保证机密而且为广播消息验证完整和真实性。更重要地，建议计划使簇头能没有改变另外的簇成员的秘密钥匙，要用体力地增加或搬迁任何簇成员。而且，建议协议在簇成员之中为关键安装避免巨大的消息交换。安全和性能的分析证明建议协议安全、有效、更实际为特定的网络的协议。

英文摘要：

Many previous broadcast encryption schemes can only guarantee confidentiality but cannot verify integrity and authenticity for broadcast messages. In this paper, a broadcast signcryption protocol for ad hoc networks is proposed based on cluster-based structure. The proposed protocol not only guarantees confidentiality but also verifies integrity and authenticity for broadcast messages. More importantly, the proposed scheme enables the cluster head to robustly add or remove any cluster member without changing secret key of other cluster members. Moreover, the proposed protocol avoids massive message exchange for key setup among cluster members. The analysis of security and performance shows that the proposed protocol is secure, efficient, and more practical protocol for ad hoc networks.