Abstract:

For lack of necessary security mechanism, the border gateway protocol (BGP) faces serious security threats. In proposed BGP security mechanisms, the management of complicated certificatation and excessive storage overhead severely block security solutions from being implemented and deployed in real world. Based on modification of autonomous system alliance’s structure, the proxy re-signature is introduced into security enhanced BGP (SE-BGP) to improve translator trust model. An improved BGP security mechanism named improved SE-BGP is also designed for solving the problem of cross-certification of key nodes between autonomous system alliances. Security analysis and performance evaluation demonstrate that this mechanism continues to reduce the route resource expenses to have better scalability and good security capability. The number of used certificates is about 31% of the SE-BGP.

Key words: border gateway protocol, cross-certification, proxy re-signature, security