Abstract
A new two-party semi-quantum key agreement protocol is proposed with the four-particle χ-type entanglement states. In this protocol, the shared secret key is generated by using Bell measurement, Z-basis measurement, sequence replacement operations and unitary operations. The one-way semi-quantum key agreement protocol can resist the Trojan horse attack naturally and both participant attack and external one. Compared with other similar two-party quantum key agreement protocols, the presented protocol is relatively efficient since the random collapse of quantum entanglement states reduces the requirement on quantum operations, without involving the four-qubit joint measurements.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant Nos. 61871205 and 62161025).
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Liu, C., Cheng, S., Li, HH. et al. New Semi-Quantum Key Agreement Protocol Based on the χ-Type Entanglement States. Int J Theor Phys 61, 60 (2022). https://doi.org/10.1007/s10773-022-05064-3
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DOI: https://doi.org/10.1007/s10773-022-05064-3