一种多组共享的高效组密钥管理方案

An Effective Multiple Group Sharing Group Key Management Solution

单个组的组密钥管理已经提出了许多有效的组密钥管理方案。本文针对多个组相关的情况,给出了一种通用的多组共享组密钥管理方案。对于多组播源应用(如网上电视),该方案能在单个组播源分别授权的前提下大大减少组播的组密钥管理代价。文中对多组共享组密钥管理方案的安全性和资源占用进行了分析。在满足安全性的前提下,该方案显著减少了对内存资源的占用。

Many effective group key management solutions have been presented for single group key management. A general multiple groups sharing group key management solution is given for multiple related groups. A muhicast server with several multicast sources as multiple programs in network TV, which user groups are of overlapping, can be benefitted from our group key management solution based on user group sharing. Our solution has a low cost while each multicast source can be authorized independently. Its security and resource occupying are analyzed. With the promise of security, our solution decreases the memory occupying obviously.