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Homomorphic MACs: MAC-Based Integrity for Network Coding

  • Shweta Agrawal
  • Dan Boneh
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5536)

Abstract

Network coding has been shown to improve the capacity and robustness in networks. However, since intermediate nodes modify packets en-route, integrity of data cannot be checked using traditional MACs and checksums. In addition, network coded systems are vulnerable to pollution attacks where a single malicious node can flood the network with bad packets and prevent the receiver from decoding the packets correctly. Signature schemes have been proposed to thwart such attacks, but they tend to be too slow for online per-packet integrity.

Here we propose a homomorphic MAC which allows checking the integrity of network coded data. Our homomorphic MAC is designed as a drop-in replacement for traditional MACs (such as HMAC) in systems using network coding.

Keywords

Signature Scheme Intermediate Node Network Code Sign Algorithm Security Game 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Shweta Agrawal
    • 1
  • Dan Boneh
    • 2
  1. 1.The University of Texas at AustinUSA
  2. 2.Stanford UniversityUSA

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