Hybrid authentication based on noisy channels

@article{Korzhik2002HybridAB,
  title={Hybrid authentication based on noisy channels},
  author={Valery I. Korzhik and Guillermo Morales-Luna},
  journal={International Journal of Information Security},
  year={2002},
  volume={1},
  pages={203-210}
}
We consider a cryptographic scenario where some center broadcasts a random binary string to Alice, Bob and Eve over binary symmetric channels with bit error probabilities εA, εB and εE respectively. Alice and Bob share no secret key initially, and their goal is to generate, after public discussion, a common information-theoretically secure key facing an active eavesdropper Eve. Under the condition εA<εE and εB<εE, code authentication (CA) can be used as part of a public discussion protocol to… CONTINUE READING

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