Device calibration impacts security of quantum key distribution.

@article{Jain2011DeviceCI,
  title={Device calibration impacts security of quantum key distribution.},
  author={Nitin Jain and Christoffer Wittmann and Lars Lydersen and Carlos Wiechers and Dominique Elser and Christoph Marquardt and Vadim Makarov and Gerd Leuchs},
  journal={Physical review letters},
  year={2011},
  volume={107 11},
  pages={
          110501
        }
}
Characterizing the physical channel and calibrating the cryptosystem hardware are prerequisites for establishing a quantum channel for quantum key distribution (QKD). Moreover, an inappropriately implemented calibration routine can open a fatal security loophole. We propose and experimentally demonstrate a method to induce a large temporal detector efficiency mismatch in a commercial QKD system by deceiving a channel length calibration routine. We then devise an optimal and realistic strategy… Expand

Figures, Tables, and Topics from this paper

Preventing Calibration Attacks on the Local Oscillator in Continuous-Variable Quantum Key Distribution
Establishing an information-theoretic secret key between two parties using a quantum key distribution (QKD) system is only possible when an accurate characterization of the quantum channel and properExpand
Measurement-Device-Independent Quantum Cryptography
In theory, quantum key distribution (QKD) provides information-theoretic security based on the laws of physics. Owing to the imperfections of real-life implementations, however, there is a big gapExpand
Quantum man-in-the-middle attack on the calibration process of quantum key distribution
TLDR
This paper reveals the security risk of the calibration process of a passive-basis-choice BB84 QKD system by launching a quantum man-in-the-middle attack which intercepts all calibration signals and resends faked ones, and proposes a basis-dependent detector efficiency mismatch (BEM) based faked states attack on a single photon BB84QKD to stress the threat of BEM. Expand
Preventing Quantum Hacking in Continuous Variable Quantum Key Distribution
Security loopholes have been shown for discrete-variable Quantum Key Distribution (QKD). Here, we propose and provide experimental evidence of an attack targeting a continuous-variable QKD system. WeExpand
Hacking on decoy-state quantum key distribution system with partial phase randomization
TLDR
It is shown that partial phase randomization is not sufficient to guarantee the security of phase-encoding QKD systems with weak coherent states, and the eavesdropper is able to steal all the key information without discovered by the users. Expand
Experimental demonstration of polarization encoding measurement-device-independent quantum key distribution.
TLDR
This work paves the way for the realization of a MDI-QKD network, in which the users only need compact and low-cost state-preparation devices and can share complicated and expensive detectors provided by an untrusted network server. Expand
Timing attacks on practical quantum cryptographic systems
With photons being the only available candidates for long-distance quantum communication, most quantum cryptographic devices are physically realized as optical systems that operate a securityExpand
Quantum key distribution: vulnerable if imperfectly implemented
  • G. Leuchs
  • Physics, Engineering
  • Optics/Photonics in Security and Defence
  • 2013
We report several vulnerabilities found in Clavis2, the flagship quantum key distribution (QKD) system from ID Quantique. We show the hacking of a calibration sequence run by Clavis2 to synchronizeExpand
Decoy-state measurement-device-independent quantum key distribution with mismatched-basis statistics
TLDR
Considering the finite size effect, this paper studies the decoy-state MDI-QKD protocol with mismatched-basis events statistics by performing full parameter optimization, and the simulation result shows that this scheme is very practical. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 32 REFERENCES
Phys
  • Rev. A 74, 022313
  • 2006
Nature Commun
  • Nature Commun
  • 2011
PRL
  • PRL
  • 2011
Phys
  • Rev. A 83, 032306
  • 2011
Phys. Rev. A
  • Phys. Rev. A
  • 2011
Nat. Photon
  • Nat. Photon
  • 2010
Opt. Express New J. Phys
  • Opt. Express New J. Phys
  • 2010
l i b a b o r p k c i l c
  • Photon. 4,
  • 2010
New J
  • Phys. 11, 065003
  • 2009
New J. Phys
  • New J. Phys
  • 2009
...
1
2
3
4
...