穿越自治系统联盟的域间路由安全机制

Inter-domain routing security mechanism for crossing autonomous system alliance

通过对SE-BGP(security enhanced BGP)的研究与分析,发现此方案不仅无法认证动态变化的跨联盟AS(autonomous system),也无法抵御其自身所发起的主动攻击。为了解决SE-BGP存在的安全问题,设计了二层跨联盟等级结构CAHS(cross-alliance hierarchical structure),基于CAHS结构,借鉴护照签证思想,利用递增散列——Ad HASH(additive hash)的特性提出了一种跨联盟安全机制SCA-BGP(secure crossing alliance for BGP)。该机制具有更高的安全性,可以有效地认证跨联盟AS的身份及行为授权,还可对其所携带的信息进行安全验证。实验分析表明,SCA-BGP可以有效地减少所需证书的规模和额外的时间开销,具有更好的可扩展性和网络收敛性能。

Through studying and analyzing SE-BGP （security enhanced BGP）, it was found that it couldn＇t validate thecross-alliance AS （autonomous system） and defense the self-lannched active attack. To solve the security problems,two-layer cross-alliance hierarchical structure CAHS （cross-alliance hierarchical structure） was designed. Based onCAHS, using the idea of passport visa and the features of AdHASH （additive hash）, a cross-alliance BGP securitymechanism SCA-BGP （secure crossing alliance for BGP） was proposed. The mechanism has higher security, which isable to effectively validate the identities and behavior authorization of the cross-alliance AS as well as the message car-ried by them. The experiment results show that SCA-BGP can effectively reduce the certificate scale and extra time over-head to get better scalability and convergence performance.