首先阐述了移动adhoc网络中密钥管理的重要性,接着探讨了几种密钥管理的方法,包括局部分布式认证授权中心、完全分布式认证授权中心、自发证书、安全Pebblenets、指示性标志、基于口令验证的密钥交换等,并对这些方法进行了较完整的概括总结和深入的比较分析,最后提出了一些研究移动adhoc网络中密钥管理方法所必须注意的问题。 Firstly, the importance of key management in mobile adhoc networks is expounded. Then, several key management methods are discussed, including distributed local authentication and authorization center, fully distributed authentication and authorization center, spontaneous certificate, secure Pebblenets, Password-based authentication and key exchange. These methods are summarized and compared in-depth. Finally, some problems that must be paid attention to in researching key management methods in mobile ad hoc networks are put forward.