动态非对称群组密钥协商协议研究

发布时间：2018-01-01 06:35

本文关键词：动态非对称群组密钥协商协议研究　出处：《大连理工大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着计算机技术及因特网的不断发展,各类面向群组的应用(如网络会议、在线游戏等)不断地涌现并给人们的工作和生活带来了极大的便利。与此同时,黑客及不法分子也广泛地活跃在互联网的各个角落。因此,对群组应用而言,如何为合法用户提供安全可靠的群组通信的问题已变得愈来愈重要。群组密钥协商协议使得双方或多方能够在敌手控制的不安全网络中安全地交换信息及协商出共同的会话密钥。非对称群组密钥协商协议协商得到的会话密钥具有非对称性,即群组加密密钥是公开的,因此任何系统实体都可以充当发送方,但只有群组成员才能解密消息。认证的群组密钥协商协议引入了对群组成员身份进行确认的机制,从而可以有效地防止成员的假冒和抵赖行为。动态群组密钥协商协议研究如何更加高效而安全地解决群组成员发生变化的问题。本文通过分析和研究典型的非对称群组密钥协商协议,首先提出了一种新的基于身份的聚合签名方案并在随机预言机模型下进行了形式化证明,然后在新签名方案的基础上,提出一种新颖的认证的动态非对称群组密钥协商协议。新协议仅需一轮通信即可实现群组成员的多种变化如新成员加入、成员退出和成员同时加入且退出等。此外,新协议满足多种安全性质,如已知密钥安全性、密钥泄露模仿安全性、未知密钥共享安全性、密钥控制安全性、完美前向安全、后向安全、重放攻击安全等。最后,效率分析表明,新协议与已有非对称群组密钥协商协议相比具有更好的表现。
[Abstract]:With the continuous development of computer technology and Internet application, all kinds of group oriented (such as web conferencing, online games) continue to emerge and brings great convenience to people's work and life. At the same time, every corner of hackers and criminals are active on the Internet. Therefore, the group of applications, how to legitimate users to provide safe and reliable group communication has become more and more important. Group key agreement protocol enables two or more parties in an insecure network security control in the exchange of information and agree on a common session key. Asymmetric group key agreement negotiation session key is asymmetric, i.e. group encryption the key is open, so any system entities can act as the sender, but only group members can decrypt the message authentication key agreement. The agreement of group members to confirm the identity of the mechanism, which can effectively prevent counterfeit and denying member behavior. Research on dynamic group key agreement protocol to more efficient and safe solution to group members change. Through the asymmetric group key agreement protocol analysis and Research on typical, first proposed a a new ID based aggregate signature scheme in the random oracle model for a formal proof, then based on the new signature scheme, this paper proposes a novel dynamic authentication asymmetric group key agreement protocol. Many new changes only one round of communication can be realized by group members as new members, members at the same time to join and exit and exit members. In addition, the new protocol to meet a variety of security properties, such as known key security, key compromise impersonation security, unknown. Key sharing security, key control security, perfect forward security, backward security, replay attack security, etc. Finally, efficiency analysis shows that the new protocol has better performance than the existing asymmetric group key agreement protocol.

【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN918.4

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