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Quantum Cryptography Security

Hidden probe attacks on ultralong fiber laser key distribution systems

arXiv
Authors: Juan Carlos Garcia-Escartin, Pedro Chamorro-Posada

Year

2017

Paper ID

44245

Status

Preprint

Abstract Read

~2 min

Abstract Words

119

Citations

N/A

Abstract

In ultralong fiber laser key distribution, two sides use standard optical equipment to create kilometer long fiber lasers in a communication link to establish a secret key. Its security rests on the assumption that any attacker would need much more sophisticated equipment and techniques than those of the legitimate user in order to discover the generated key. We present a challenge to that assumption with a hidden probe attack in which the eavesdropper hides a weak signal in the unavoidable noise floor that appears in the laser during amplification and probes with it the configuration of one or both communication parties. We comment how this attack can compromise different proposals for ultralong laser key distribution and propose possible countermeasures.

Why This Paper Matters

  • This paper contributes to the Quantum Cryptography & Security research area in the Quantum Articles archive.
  • It adds a 2017 reference point for readers tracking recent quantum research.
  • In ultralong fiber laser key distribution, two sides use standard optical equipment to create kilometer long fiber lasers in a communication link to establish a secret key.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1708.05230 [2] arXiv https://arxiv.org/abs/1708.05230 [3] Publisher https://arxiv.org/abs/1708.05230

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