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计算机工程 ›› 2007, Vol. 33 ›› Issue (11): 129-131. doi: 10.3969/j.issn.1000-3428.2007.11.048

• 安全技术 • 上一篇    下一篇

一种分层分组式组播密钥管理方案

徐彦彦1,徐正全1,陈 曦2   

  1. (1. 武汉大学测绘遥感信息工程国家重点实验室多媒体通信工程中心,武汉 430079;2. 中国船舶重工集团公司第701研究所,武汉 430070)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-06-05 发布日期:2007-06-05

De-centralized Multicast Key Management Scheme

XU Yanyan1, XU Zhengquan1, CHEN Xi2   

  1. (1. Multimedia Communication Engineering Center, State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University Wuhan 430079; 2. China Ship Building Industry Corporation-No.701 Research and Development Institute, Wuhan 430070)
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-06-05 Published:2007-06-05

摘要: 给出了一种分层分组式组播密钥管理方案,介绍了这种方案的主要思想,分析了优缺点。这种方案可扩展性好,密钥更新代价低,当数据在不同子组间传输时,有效地解决了其它分层分组式方案中普遍存在的对数据多次加密/解密造成的传输效率低下的问题,同时也保证了组播组前向/后向安全。

关键词: 组播, 密钥管理, 密钥更新, 分层分组

Abstract: This paper presents a new de-centralized multicast key management scheme. The main idea is introduced and its advantages and disadvantages are analyzed. The scheme is scalable, re-key cost effective. When data is transmitted among different subgroups, the problem of low efficiency in data transmission caused by multiple encryptions/decryptions in existing de-centralized schemes is solved. Also the forward/backward secrecy is guaranteed.

Key words: Multicast, Key management, Re-key, De-centralized

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