基于身份的可认证非对称群组密钥协商协议

发布时间：2018-03-21 17:35

本文选题：群组密钥协商　切入点：非对称加密　出处：《计算机研究与发展》2014年08期 　论文类型：期刊论文

【摘要】：非对称群组密钥协商协议(asymmetric group key agreement,AGKA)能使群组内部成员安全地传递信息.随着大规模分布式网络协同计算的发展,参加安全协同计算的成员可能来自于不同领域、不同时区、不同云端及不同类型的网络.现有的AGKA不能满足来自于跨域及异构网络之间群组成员的安全信息交换,且安全性仅局限于抗被动攻击.提出一种基于身份的可认证非对称群组密钥协商协议(identity-based authenticated asymmetric group key agreement,IB-AAGKA),该协议实现一轮非对称群组密钥协商,解决群组成员因时区差异而不能保持多轮在线密钥协商的问题;可实现匿名性与可认证性;支持节点的动态群组密钥更新,实现了群组密钥向前保密与向后保密安全性.在decisional bilinear Diffie-Hellman(DBDH)困难假设下,证明了协议的安全性,并分析了协议的性能.
[Abstract]:Asymmetric group key agreement can enable members within groups to communicate information securely. With the development of cooperative computing in large-scale distributed networks, members participating in security cooperative computing may come from different fields and time zones. Different cloud and different types of networks. The existing AGKA can not satisfy the security information exchange between group members from cross-domain and heterogeneous networks. The security is limited to passive attack. An identity-based authenticated asymmetric group key agreement protocol named identity-based authenticated group key agreement (IB-AAGKAA) is proposed, which implements a round of asymmetric group key agreement. Solve the problem that group members can not maintain multiple rounds of online key agreement because of time zone difference; can realize anonymity and authentication; support dynamic group key update of nodes. Under the difficult assumption of decisional bilinear Diffie-Hellman (DBDH), the security of the protocol is proved and the performance of the protocol is analyzed.
【作者单位】：郑州轻工业学院计算机与通信工程学院;北京理工大学计算机学院;
【基金】：国家自然科学基金项目(61272511)
【分类号】：TN918.4

【相似文献】