Fake state attack on practically decoy state quantum key distribution

Details Fake state attack on practically decoy state quantum key distribution Fake state attack on practically decoy state quantum key distribution

2012-02-15

arxiv.org/abs/1202.3201v1

Physics

Quantum Physics

Scientific paper

In this paper, security of practically decoy state quantum key distribution under fake state attack is considered. If quantum key distribution is insecure under this type of attack, decoy sources can not also provide it with enough security. Strictly analysis shows that Eve should eavesdrop with the aid of photon-number-resolving instruments. In practical implementation of decoy state quantum key distribution where statistical fluctuation is considered, however, Eve can attack it successfully with threshold detectors.

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