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Aggregated Path Authentication for Efficient BGP Security
Meiyuan Zhao, Sean W. Smith, David M. Nicol
Dartmouth TR2005-541

Abstract: The border gateway protocol (BGP) controls inter-domain routing in the Internet. BGP is vulnerable to many attacks, since routers rely on hearsay information from neighbors. Secure BGP (S-BGP) uses DSA to provide route authentication and mitigate many of these risks. However, many performance and deployment issues prevent S-BGP's real-world deployment. Previous work has explored improving S-BGP processing latencies, but space problems, such as increased message size and memory cost, remain the major obstacles. In this paper, we combine two efficient cryptographic techniques---signature amortization and aggregate signatures---to design new aggregated path authentication schemes. We propose six constructions for aggregated path authentication that substantially improve efficiency of S-BGP's path authentication on both speed and space criteria. Our performance evaluation shows that the new schemes achieve such an efficiency that they may overcome the space obstacles and provide a real-world practical solution for BGP security.


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   Meiyuan Zhao, Sean W. Smith, and David M. Nicol, "Aggregated Path Authentication for Efficient BGP Security." Dartmouth Computer Science Technical Report TR2005-541, May 2005.

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