METHOD FOR DETECTING BLINDING ATTACKS ON PHOTODETECTORS IN A QUANTUM CRYPTOGRAPHY SYSTEM

METHOD FOR DETECTING BLINDING ATTACKS ON PHOTODETECTORS IN A QUANTUM CRYPTOGRAPHY SYSTEM

A method of identifying occurrence of a blinding attack in a quantum cryptography system, and a receiver for a quantum cryptography. The method comprises the steps of providing a light emitter at a receiver of the quantum cryptography system, wherein at least a portion of light emitted from the ligh...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KURTSIEFER, Christian, SHEN, Lijiong
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:A method of identifying occurrence of a blinding attack in a quantum cryptography system, and a receiver for a quantum cryptography. The method comprises the steps of providing a light emitter at a receiver of the quantum cryptography system, wherein at least a portion of light emitted from the light emitter is detectable by a single photon detector of the receiver; switching the light emitter off during a normal operation mode of the single photon detector; measuring a first number of detection events registered in the single photon detector in a first time period, T1, with the light emitter switched on; and identifying the occurrence of the blinding attack based on the first number of detection invents.