Controlled quantum secure direct communication method based on five particles
A technology of secure direct communication and particles, which is applied in photon quantum communication, secure communication devices, and key distribution, and can solve problems such as low transmission efficiency
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[0089] 1. Measuring Replay Attacks
[0090] The eavesdropper Eve randomly selects one of the two measurement bases to measure the captured particles, and sends the corresponding particles to the receiver Bob according to the measurement results. Since the decoy photon is randomly selected from two non-orthogonal bases and randomly inserted into the transmitted sequence, the eavesdropper Eve does not know the position and initial state of the decoy photon, so when the eavesdropper Eve performs some operations on the decoy photon will cause an error and will be caught during wiretapping detection. Measuring the detection particle error rate caused by the retransmission attack is 1-(1 / 2) n , where n represents the number of decoy photons.
[0091] 2. Interception of retransmission attacks
[0092] The eavesdropper Eve captures some particles, and then sends a string of particles prepared by himself to the receiver Bob. Similarly, since the eavesdropper Eve does not know the p...
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