The group key management which is efficient to perform the key updating is the foundation to guarantee the security and privacy of Mobile Ad Hoc Networks (MANET). Inspired by the hierarchical access control in the centralized environment, this paper proposes an integrated group key agreement scheme (IGK) to provide hierarchical access control in MANETs when members have accesses to multiple resources. Performance analyses on computation and communication overhead demonstrate that the integrated group key agreement is more efficient than the single group key agreement scheme.%高效并能实时更新密钥的组密钥协商算法是保证无线自组织网络通信内容安全性和私密性的前提.本文针对成员对多个资源拥有不同接入权限的情况,将集中式分级接入控制机制中的密钥管理算法应用于无线自组织网络中,提出了聚合组密钥协商算法IGK.对密钥建立时的计算开销和通信开销的理论分析表明,聚合组密钥协商算法在密钥建立时要优于单组密钥协商算法.
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