articlePhysical Review LettersJun 4, 2007BRONZE OA

Device-Independent Security of Quantum Cryptography against Collective Attacks

AAAntonio AcínNBNicolas BrunnerNGNicolas GisinSMSerge MassarSPStefano Pironio

Institute of Photonic Sciences · Institució Catalana de Recerca i Estudis Avançats · +2 more institutions

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Abstract

We present the optimal collective attack on a quantum key distribution protocol in the "device-independent" security scenario, where no assumptions are made about the way the quantum key distribution devices work or on what quantum system they operate. Our main result is a tight bound on the Holevo information between one of the authorized parties and the eavesdropper, as a function of the amount of violation of a Bell-type inequality.

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Topics & keywords

Topics
Keywords
  • Quantum key distribution
  • Quantum cryptography
  • Computer science
  • Computer security
  • Key (lock)
  • Quantum
  • Cryptography
  • Quantum information
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