Friday, August 18, 2017 2:00 pm
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2:00 pm
EDT (GMT -04:00)
Active beam splitting attack applied to coherent-state based QKD protocols
Dmitry Kronberg, Lomonosov Moscow State University
We consider a new type of attack on a coherent state-based quantum key distribution protocols (like coherent one-way (COW) or differential phase-shift (DPS) protocol). The main idea of the attack consists in measuring individually the intercepted states and sending the rest of them unchanged. In some cases, this attack can be considered as a generalization of well-known beam-splitting attack and unambiguous state discrimination attack.