On Deniability in Quantum Key Exchange

@inproceedings{Beaver2002OnDI,
  title={On Deniability in Quantum Key Exchange},
  author={Donald Beaver},
  booktitle={EUROCRYPT},
  year={2002}
}
We show that claims of “perfect security” for keys produced by quantum key exchange (QKE) are limited to “privacy” and “integrity.” Unlike a one-time pad, QKE does not necessarily enable Sender and Receiver to pretend later to have established a different key. This result is puzzling in light of Mayers’ “No-Go” theorem showing the impossibility of quantum bit commitment. But even though a simple and intuitive application of Mayers’ protocol transformation appears sufficient to provide… CONTINUE READING

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