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针对实时分布式应用的组密钥动态更新方案

Scheme of re-keying management in real-time distributed group communication
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摘要 针对有实时性需求的分布式组通信应用问题,提出基于哈希函数和BD协议的组密钥更新机制.建立以种子成员为主导的组密钥管理模型,密钥更新主要发生在局部范围,不会引起大范围的信息耦合现象.BD协议降低了组密钥链种子参数的生成时间,从而降低了密钥更新的时间.安全性,健壮性和效率分析表明:提出的组密钥更新机制在满足实时性要求的前提下,能保证信息的前向机密性和后向机密性.相对于Io-lus模型,不仅消除了GSC与GSI处单点失效引发的1toN问题,且不需在GSI处的转发环节,消除了GSI处的数据瓶颈问题. A scheme of re-keying management based on key chain and BD protocol applied to real-time distributed communication is proposed, The scheme sets up a key management model supervised by seed nodes, in which refreshing key mainly occurs locally so that it would not result in the situation of large-scaly exchanging information. The time cost of refreshing key was reduced because of BD protocol reducing the time cost of creating key-chain＇ s seed parameter. Under the analysis of security, robustness and efficiency, the scheme can guarantees forward and backward confidentiality yet still achieves the real-time property. Compared with Iolus model, the proposed scheme resolves the 1 to N problem due to single node failure and avoids data bottleneck occurring at GSI.
作者 杜春来 胡铭曾 张宏莉
机构地区 哈尔滨工业大学计算机网络与信息安全技术研究中心
出处 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2008年第1期73-76,135,共5页 Journal of Harbin Institute of Technology
基金 国家重点基础研究发展规划资助项目(2005CB321806)
关键词 分布式组通信 实时性 BD协议 组密钥更新管理 distributed group communication real-time BD protocol re-keying management
分类号 TP393 [自动化与计算机技术—计算机应用技术]
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参考文献14

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二级参考文献13

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哈尔滨工业大学学报
2008年 第1期

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