Random Linear Network Coding: A free cipher?

Details Random Linear Network Coding: A free cipher? Random Linear Network Coding: A free cipher?

2007-05-12

arxiv.org/abs/0705.1789v1

Computer Science

Information Theory

5 pages, 2 figures, Accepted for the IEEE International Symposium on Information Theory, Nice, France, June, 2007

Scientific paper

We consider the level of information security provided by random linear network coding in network scenarios in which all nodes comply with the communication protocols yet are assumed to be potential eavesdroppers (i.e. "nice but curious"). For this setup, which differs from wiretapping scenarios considered previously, we develop a natural algebraic security criterion, and prove several of its key properties. A preliminary analysis of the impact of network topology on the overall network coding security, in particular for complete directed acyclic graphs, is also included.

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