【摘要】 许多协同与分布式应用涉及到在不安全网络上的通信,因此,安全性是这些应用的重要需求。组密钥协商协议是进行安全组通信的基本构造块。基于树结构与门限的思想,王志伟等人提出了一个高效的组密钥协商协议(TTS协议),并认为他们的协议是安全的。但是,这一协议存在严重的安全漏洞,因此是不可以使用的。更多还原

【Abstract】 Many collaborative and distributed applications involve communication over open networks.Security thus is an important requirement.Group key agreement protocol is one of the basic building blocks in securing group communication.Based on tree and threshold idea Wang et al.proposed an efficient group key agreement protocol(TTS)and claimed that their protocol is secure.However,a serious security flaw is found in their protocol so that TTS protocol cannot be used.更多还原