在分析现有的Ad Hoc网络分布式信任方案基础上,提出一种有效的基于簇的密钥管理方案。该方案实现了节点之间的双向认证,具有较强的抗假冒攻击能力和抗重放攻击能力,防止了由于通信一方指定会话密钥产生的安全隐患。仿真结果表明,该方案安全高效,适合主机能量与计算能力受限、通信带宽有限的移动Ad Hoc网络。 Based on the analysis of the existing distributed trust schemes in Ad Hoc networks, an effective key management scheme based on clusters is proposed. The scheme realizes two-way authentication between nodes, has strong counterfeit attack capability and anti-replay attack ability, and prevents the potential safety hazard caused by the designated session key of the communication party. Simulation results show that the scheme is safe and efficient and suitable for mobile Ad Hoc networks with limited host energy and computing power and limited communication bandwidth.