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提出一种新颖的组密钥管理协议,该协议指定Internet上的不可信路由器充当演化节点,组织一棵分层的密钥参数演化树,演化并传送生成会话密钥的相关信息.通信成员被划分为子组后依附在演化节点上,并根据收到的密钥演化信息和自己持有的秘密参数计算出用于安全组通信的会话密钥.该协议的优点为密钥管理负载由树中不能泄露组通信内容的演化节点所分担,且每个演化节点的密钥管理开销独立于组规模,实验结果表明:本文的协议比已有的LKH和IOLUS协议具有更好的可扩展性.
A novel group key management protocol is proposed, which designates an untrusted router on the Internet as an evolution node that organizes a hierarchical key parameter evolutionary tree to evolve and transmit relevant information that generates session keys. Is divided into subgroups and attached to evolution nodes, and according to the received key evolution information and own secret parameters to calculate the session key used for security group communication.The advantage of this protocol is that the key management load is composed of tree Which can not be divulged by the evolutionary nodes of the group communication content. The key management overhead of each evolution node is independent of the group size. Experimental results show that the proposed protocol has better scalability than the existing LKH and IOLUS protocols.