Cryptology ePrint Archive: Report 2010/183
Preventing Pollution Attacks in Multi-Source Network Coding
Shweta Agrawal and Dan Boneh and Xavier Boyen and David Mandell Freeman
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.
Category / Keywords: cryptographic protocols / network coding, signatures
Publication Info: Full version of paper to appear in PKC 2010
Date: received 5 Apr 2010
Contact author: dfreeman at cs stanford edu
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Version: 20100409:144826 (All versions of this report)
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