Cryptanalysis and improvement in controlled quantum dialogue using cluster states
- Publication Type:
- Journal Article
- Quantum Information Processing, 2019, 18 (4)
- Issue Date:
|Liu-Chen2019_Article_CryptanalysisAndImprovementInC.pdf||Published Version||338.61 kB|
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© 2019, Springer Science+Business Media, LLC, part of Springer Nature. The controlled quantum dialogue protocol which was put forward recently (Kao and Hwang in Quantum Inf Process 16(5):139, 2017) is analyzed. It shows that a dishonest controller can successfully eavesdrop on the secret messages that the two users send by the different initial state attack or he (she) can disturb communication without being detected by the denial-of-service attack. To improve these security loopholes, a new method to check eavesdropping is given. The correctness and efficiency of this method is proven.
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