三维校园虚拟漫游系统的设计与实现

本文以山东泰山学院为例,介绍了三维校园虚拟漫游系统的设计和开发流程.参照泰山学院校园的实际情况,借助3Dmax进行建模、调节光线并添加贴图和材质;为了使系统实现真正的3D效果,又运用3D视景仿真软件进行调整,并设置了自动漫游和天气等信息使系统更具有真实性,最终完成了三维校园虚拟漫游系统的开发.     

A new provably-secure key agreement protocol for roaming in mobile networks

Protocols for authentication and key establishment have special requirements in a wireless environment. This paper presents a new key agreement protocol HAKA （home server aided key agreement） for roaming scenario. It is carried out by a mobile user and a foreign server with the aid of a home server, which provides all necessary authentications of the three parties. The session key can be obtained by no one except for the mobile user and the foreign server. HAKA is based on Diffie-Hellman key exchange and a secure hash function without using any asymmetric encryption. The protocol is proved secure in Canetti-Krawczyk （CK） model.