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Collective attack

by Yee Wei Law - Tuesday, 29 August 2023, 5:24 PM
 

The discussion here follows from the discussion of individual attacks.

In a collective attack [Sch10],

  • Eve prepares an ancilla state for each signal coming from Alice and lets it interact with the signal.

  • Eve passes Alice’s signal on to Bob.

References

[ETS18] ETSI, Quantum Key Distribution (QKD); Vocabulary, Group Report ETSI GR QKD 007 v1.1.1, December 2018. Available at https://www.etsi.org/deliver/etsi_gr/QKD/001_099/007/01.01.01_60/gr_qkd007v010101p.pdf.
[Sch10] S. Schauer, Attack Strategies on QKD Protocols, in Applied Quantum Cryptography (C. Kollmitzer and M. Pivk, eds.), Lect. Notes Phys. 797, Springer Berlin Heidelberg, 2010, pp. 71–95. https://doi.org/10.1007/978-3-642-04831-9_5.
[Wol21] R. Wolf, Quantum Key Distribution: An Introduction with Exercises, Springer, Cham, 2021. https://doi.org/10.1007/978-3-030-73991-1.
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