Networking

Cooperative Defense Against Pollution Attacks in Network Coding Using SpaceMac

Download Now Free registration required

Executive Summary

Intra-session network coding is inherently vulnerable to pollution attacks. In this paper, first, the authors introduce a novel homomorphic MAC scheme called SpaceMac, which allows an intermediate node to verify whether received packets belong to a specific subspace, even if the subspace is expanding over time. Then, they use SpaceMac as a building block to design a cooperative scheme that provides complete defense against pollution attacks: it can detect polluted packets early at intermediate nodes, and it can identify the exact location of all, even colluding, attackers, thus making it possible to eliminate them.

  • Format: PDF
  • Size: 779.11 KB