Semi-device-independent security of one-way quantum key distribution

  title={Semi-device-independent security of one-way quantum key distribution},
  author={Marcin Pawłowski and Nicolas Brunner},
  journal={Physical Review A},
By testing nonlocality, the security of entanglement-based quantum key distribution (QKD) can be enhanced to being ``device-independent.'' Here we ask whether such a strong form of security could also be established for one-way (prepare and measure) QKD. While fully device-independent security is impossible, we show that security can be guaranteed against individual attacks in a semi-device-independent scenario. In the latter, the devices used by the trusted parties are noncharacterized, but… 

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