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  1. Kamaruddin S, Shaari JS, Kolenderski P
    Sci Rep, 2020 Apr 03;10(1):5847.
    PMID: 32246055 DOI: 10.1038/s41598-020-62812-3
    We consider the counterfactual protocol proposed in Phys. Rev. Lett., 103, 230501 (2009) within a device independent framework and show how its security can easily be compromised. Capitalising on the fact that the protocol is based on the use of a single photon entanglement phenomenon, we propose an equivalent protocol. It can be made secure within such a pessimistic framework against a supra-quantum Eve limited only by the no-signalling principle. The equivalence the protocol demonstrates the possibility of device independent framework for counterfactual quantum cryptography.
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