On the Security of Quantum Key Distribution Ping-Pong Protocol


Computational based cryptography might not guarantee long term security if computational algorithms, computers, and so on are made remarkable progress. Therefore, quantum cryptography with unconditionally security attracts attention. In this paper, we consider security of a two-way quantum key distribution protocol, so called Ping-Pong protocol. As a result, we introduce not only robustness but also a different information disturbance theorem, which denotes a trade-off relationship between information gain for an eavesdropper and error rate, from the related works for an attack model.

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M. Yoshida, T. Miyadera and H. Imai, "On the Security of Quantum Key Distribution Ping-Pong Protocol," Journal of Quantum Information Science, Vol. 3 No. 1, 2013, pp. 16-19. doi: 10.4236/jqis.2013.31004.

Conflicts of Interest

The authors declare no conflicts of interest.


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