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Asymmetric delay attack on an entanglement-based bidirectional clock synchronization protocol
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DOI：10.1063/1.5121489.png)
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We demonstrate an attack on a clock synchronization protocol that attempts to detect tampering of the synchronization channel using polarization-entangled photon pairs. The protocol relies on a symmetrical channel, where propagation delays do not depend on the propagation direction, for correctly deducing the offset between clocks-a condition that could be manipulated using optical circulators, which rely on static magnetic fields to break the reciprocity of propagating electromagnetic fields. Despite the polarization transformation induced within a set of circulators, our attack creates an error in time synchronization while evading detection.
Keyword:
OPTICAL ISOLATION
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IF:
3.6
论文数:
10.4W
被引数:
17.8W
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Possible mechanisms of switching in symmetrical two-ports based on 2D photonic crystals with magneto-optical resonators.png)
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