Distributed Relay Protocol for Probabilistic Information-Theoretic Security in a Randomly-Compromised Network

  • Travis R. Beals
  • Barry C. Sanders
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5155)

Abstract

We introduce a simple, practical approach with probabilistic information-theoretic security to mitigate one of quantum key distribution’s major limitations: the short maximum transmission distance (~200 km) possible with present day technology. Our scheme uses classical secret sharing techniques to allow secure transmission over long distances through a network containing randomly-distributed compromised nodes. The protocol provides arbitrarily high confidence in the security of the protocol, and modest scaling of resource costs with improvement of the security parameter. Although some types of failure are undetectable, users can take preemptive measures to make the probability of such failures arbitrarily small.

Keywords

quantum key distribution QKD secret sharing information theoretic security 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Travis R. Beals
    • 1
  • Barry C. Sanders
    • 2
  1. 1.Department of PhysicsUniversity of CaliforniaBerkeleyUSA
  2. 2.Institute for Quantum Information ScienceUniversity of CalgaryAlbertaCanada

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