摘要： 为了减轻移动式网络中的三角路由问题，引入一个动态家乡代理为外地的移动式网络提供本地家乡代理的服务。设计了基于AAA机制的动态家乡代理模型，实现了基于数字签名原则和D-H密钥交换算法的移动式网络注册和密钥协商协议，描述了移动式网络节点的数据路由方式。安全性分析表明，动态家乡代理协议安全地实现了移动路由器与动态家乡代理之间的密钥交换，有效防止了中间人攻击和会话拦截攻击，能对实施泛洪攻击的移动节点进行跟踪。

关键词: 网络移动性, 路由优化, 密钥交换, 动态家乡代理

Abstract:

For reducing the “triangle routing” problem in mobile network, a dynamic home agent is introduced to provide local home agent service for the mobile network in the foreign mobile network. A dynamic home agent model based on the AAA scheme is designed, and a mobile network registration and key exchange protocol based on the digital signature scheme and the Diffie-Hellman key exchange algorithm is realized, and the data route method of mobile network nodes is described. The security analysis shows that the presented protocol can realize the key exchange between mobile router and the dynamic home agent securely, defending the man-in-the-middle attacks and session hijacking attacks, and traces the mobile node which commits flooding attack.

Key words: network mobility(NEMO), route optimization, key exchange, dynamic home agent

中图分类号: 

• TP393