中文摘要：

组密钥管理是组通信安全的核心问题.目前研究的组密钥管理方案大都源于树状结构,而限高树密钥结构能够通过限制树的高度来保证组密钥管理协议的性能.提出了采用限高树密钥结构的分布式TGDH组密钥管理协议.

英文摘要：

Group key management is the key of secure group communication. Most group key management schemes are based on key tree, and height limited key tree limits the height of tree to be more efficient. This paper presents a TGDH group key management protocol based on height limited tree.