天地一体化网络无缝切换和跨域漫游场景下的安全认证增强方案

Secure authentication enhancement scheme for seamless handover and roaming in space information network

由多种异构网络融合而成的天地一体化网络受到了研究者的广泛关注,但是其由于拓扑复杂、用户规模庞大而面临诸多安全威胁,容易出现链路切换和用户跨域漫游的情况。针对天地一体化网络的特点,提出了一种适用于天地一体化网络无缝切换和跨域漫游场景下的安全认证增强方案,基于安全凭证(Token)与散列链的结合,实现了用户与拜访域的双向快速认证,同时支持用户在拜访域中的合理计费。此外,针对天地一体化网络中卫星接入点频繁切换问题,提出了2种无缝切换机制以确保用户通信的连续性。安全性分析结果表明,所提方案不仅满足跨域漫游所必备的安全特性,还能够实现用户在拜访域的合理计费。

Space information network composed of a variety of heterogeneous networks is widely concerned.However,the space information network is facing more security threats and more likely to roam due to its complex topology and large user scale.Considering the characteristics of space information network,a secure authentication enhancement scheme for seamless handover and roaming in space information network was presented.The fast mutual authentication and reasonable accounting between the user and the visiting domain based on the combination of Token and Hash chain was achieved.In addition,two seamless handover mechanisms were proposed to ensure the continuity of user communication.Finally,security analysis indicates that the scheme can not only provide essential security properties,but also achieve reasonable accounting.