International Association for Cryptologic Research

International Association
for Cryptologic Research


Paper: Preventing Pollution Attacks in Multi-Source Network Coding

Shweta Agrawal
David Mandell Freeman
Dan Boneh
Xavier Boyen
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Abstract: Network coding is a method for achieving channel capacity in networks. The key idea is to allow network routers to linearly mix packets as they traverse the network so that recipients receive linear combinations of packets. Network coded systems are vulnerable to pollution attacks where a single malicious node floods the network with bad packets and prevents the receiver from decoding correctly. Cryptographic defenses to these problems are based on homomorphic signatures and MACs. These proposals, however, cannot handle mixing of packets from multiple sources, which is needed to achieve the full benefits of network coding. In this paper we address integrity of multi-source mixing. We propose a security model for this setting and provide a generic construction.
  title={Preventing Pollution Attacks in Multi-Source Network Coding},
  booktitle={IACR Eprint archive},
  keywords={cryptographic protocols / network coding, signatures},
  note={Full version of paper to appear in PKC 2010 14704 received 5 Apr 2010},
  author={Shweta Agrawal and David Mandell Freeman and Dan Boneh and Xavier Boyen},