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
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
CLC Number:
XU Yanyan; XU Zhengquan; CHEN Xi. De-centralized Multicast Key Management Scheme[J]. Computer Engineering, 2007, 33(11): 129-131.
徐彦彦;徐正全;陈 曦. 一种分层分组式组播密钥管理方案[J]. 计算机工程, 2007, 33(11): 129-131.