摘要： 安全性是组播应用的基本需求，安全、高效的组播密钥管理方案是保证组播通信安全的关键。该文在分析组播通信安全需求的基础上，提出一种基于密钥矩阵的组播密钥管理方案。该方案利用密钥对进行密钥更新，适合网络拓扑变化频繁、带宽有限的网络需求。通过比较发现，该方案在通信、存储开销以及计算复杂度方面均优于LKH, Iolus等其他方案。

关键词: 安全组播, 密钥管理, 密钥矩阵, 密钥更新

Abstract: Security is the essential demand of multicast applications, to which a secure and efficient multicast key management scheme is the key. According to the analysis of the security demand of multicast communication, a multicast key management scheme based on key matrix is proposed. The scheme makes use of key pair for rekeying and is suitable for the demand of network, of which the topology dynamically changes and the bandwidth is limited. By compared with the scheme of multicast key management such as LKH and Iolus in communication overhead, key storage and computation complexity, this scheme is much better.

Key words: secure multicast, key management, key matrix, rekeying

中图分类号: 

• TP309