随着无线技术的发展,移动通信成为近年来计算机网络研究的热点。越来越多的移动设备连接到 Internet 上,希望能够在任何地点任何时候访问Internet 而不中断通信。目前,研究者在移动通信方面已经提出了很多解决方案,如Mobile IP、SCTP、SIP 等,但它们都有各自的缺点而不能很好地解决移动问题。IETF 的 HIP工作组建议的主机标识协议(Host Identity Protocol,HIP)是能够同时解决主机移动、安全性和多宿主问题的新协议。HIP 有许多优点,用一种加密的方式进行数据传送,并在 With the development of wireless technology, mobile communication has become a hot spot in computer network in recent years. More and more mobile devices connect to the Internet, hoping to have access to the Internet anytime, anywhere without interrupting communications. At present, researchers have proposed many solutions in mobile communication such as Mobile IP, SCTP, SIP, etc., but they all have their own shortcomings and can not solve the mobile problem well. The HIP Working Group at IETF recommends the Host Identity Protocol (HIP), a new protocol that addresses both host mobility, security and multi-homed problems. HIP has many advantages, in an encrypted way for data transfer, and at