基于单密钥的特定源多播安全机制

由于多播网络体系结构中多播数据发送不是点对点的方式，因此传统的端到端的安全不适合多播网络体系结构.在多播数据发送前，多播数据的接收者只要公布自己的公/私钥对中的公钥以及在发送加入组成员消息时告诉多播数据的发送者它的一个密钥，而无须知道多播源发送数据的加密密钥;多播数据发送者在每一次发送多播数据时，随机地选出一个密钥对发送的信息进行加密，但该密钥不是直接告诉多播数据接收者;接收者在进行解密数据时，首先必须利用自己的私钥以及发送给多播数据发送者的密钥求得加密数据的密钥，然后才能进行原文解密.

The Strategy of Security of Source Specific Multicast Data Forwarding Based on Single Encrypted Key

In forwarding multicast the way of switching data is not point to point, the traditional security model on end to end is not conformable. The approaches solve the problem, which forwarding multicast data, all of multicast receivers must know a common key code. Before forwarding secure multicast data, the receiver may not know the password, which the source encrypt data with, and it only announces its public key code and the session password, which they negotiate about when the receiver join a multicast group. While the multicast source send multicast data, it stochastically choice the session key, which is encrypted multicast data and is informed the receivers directly. Before the receivers decrypt the cryptograph, they must obtain the session key that is encrypted multicast data.