为了Ad Hoc网络能够更好的应用和发展,必须有效的解决其安全隐患,由于Ad Hoc网络中不存在可信任的中心,其密钥管理就显得尤为重要。文中提出了一种改进的Ad Hoc网络密钥管理方案。改进后的方案采用可验证的秘密共享、公钥加密和随机数相结合的技术。分析结果表明,该方案进一步提高了安全性,同时降低了计算量。 In order to Ad Hoc network can be better applied and developed, it must effectively address its security risks, because Ad Hoc network does not exist in a trusted center, its key management is particularly important. In this paper, an improved Ad Hoc network key management scheme is proposed. The improved scheme uses verifiable secret sharing, public key encryption and random number combining technology. The analysis results show that the scheme further improves the security and reduces the computation.