An improved ID-based group key agreement protocol

摘要：

　　ID-based constant round group key agreement protocols are efficient in both computation and communication.But previous protocols do not provide valid message authentication.Based on attacks analysis,an improvement is proposed in this paper.The improved method takes full advantage of the data transmitted in the various stages of the protocol.By guaranteeing freshness of authentication messages,authenticity of the generator of authentication messages and completeness of authenticator,the improved protocol can resists various passive attack and active attack.The forward secrecy of the improved protocol is proved under KY model.Compared with existing methods,the improved protocol is more effective and applicable.

关键词： group key agreement protocol ID forward secrecy non-super-singular elliptic curve KY model

会议类型: 国内会议

会议名称: 第八届中国可信计算与信息安全学术会议

会议地点: 湖北恩施

会议语种:英文

页码: 1-6

在线出版日期: 2014-09-13（万方平台首次上网日期，不代表论文的发表时间）