组播安全及其改进的源认证

安全组播通信的主要挑战之一是源认证,而其关键是为组播通信提供可靠的安全机制。然而,现在的组播协议仅提供部分解决办法。鉴于这些原因,作者首先阐述组播通信的主要安全问题——源认证。其次,基于发送方和接收方间初始的不精确时间同步,提出了一个非常有效的方法,此方法能作到数据包一到,就允许接收方认证大部分包。

Multicast Security and Its Improved Sourse Authentication

One of the main challenges of securing multicast communication is source authentication. It is therefore critical to provide sound security mechanisms for multicast communication. However, existing protocols for multicast offer only partial solutions. In view of these reasons, the authors first address one major security problem of multicast communication: source authentication. Second, based on initial loose time synchronization between the sender and the receiver, the authors present a very efficient solution that allows receivers to authenticate most packets as soon as they arrive.