SECURITY METHOD OF MOBILE INTERNET PROTOCOL VERSION 6 BASED SERVER

摘要

A security method of a server-based mobile IPv6(Internet Protocol version 6) system is provided to protect a message from an attack by exchanging keys using a changed PAK(Password-based Authentication Key). Mobile nodes(10a,10b) exchanges security elements which are required for a key exchange, a mutual authentication, and an SA(Security Association), with a server(20) by using a modified PAK. The mobile nodes and the server set an SPD(Security Policy Database) and an SAD(Security Association Database) for an IPsec(Internet Protocol Security) tunnel. When the PAK exchange is completed, a reliable tunnel is formed between the first mobile node and the server. The first mobile node requests a similar key to the server for a reliable communication with a second mobile node. The modified PAK is exchanged between the mobile nodes by using the similar key from the server as a password.