【摘要】 组播安全问题一直是组播研究的一个难点,该文在以往研究的基础上,通过对大型密钥系统的分析提出了一个基于代理的密钥管理系统;它通过增加在代理上的一次加密过程,将整个组播组划分为若干个子组,分别进行控制;从而使得系统具有良好的可扩展性,也适用于组播成员频繁变化的情况。更多还原

【Abstract】 The problem of multicast security has been a difficulty in multicast research.Based on the analysis of several common key management systems,an agent-based key management system for large-scale multicast is put forward.By increasing an encryption at the agent,the whole multicast group is divided into several subgroups and the subgroups are controlled separately,thus making the system have good scalability and be suitable for frequent changing of multicast members.更多还原