An Improved Secure Certificateless Authenticated Group Key Agreement Protocol

摘要：

In modern collaborative and distributed applications, authenticated group key agreement (AGKA) is one of the important issues. In this paper, we present that one existing certificateless AGKA protocol has some security drawbacks and does not satisfy some security attributes required for AGKA protocols. To overcome its drawbacks, we propose a secure and efficient protocol upon the initial one and a signature scheme proved secure in the random oracle model. The security analysis shows that our improved protocol can achieve Explicit key authentication, Known session key security, Known ephemeral secrets security, Perfect forward security, No key compromise impersonation, No key control and No unknown key share. With respect to efficiency, our protocol only needs three communication rounds. In each protocol run, only three pairing computations are involved for each participant.

关键词： certificateless public key cryptography authenticated group key agreement signature batch verification bilinear map

作者: Manman Geng Futai Zhang

作者单位: College of Computer Science and Technology,Nanjing Normal University Jiangsu Information Security and Confidentiality Technology Engineering Research Center Nanjing,China

会议类型: 国际会议

会议名称: 2009 IEEE International Conference on Intelligent Computing and Intelligent Systems(2009 IEEE 智能计算与智能系统国际会议)

会议地点: 上海

会议语种:英文

页码: 2152-2156

在线出版日期: 2009-11-20（万方平台首次上网日期，不代表论文的发表时间）