Cryptanalysis and improvement in controlled quantum dialogue using cluster states
- 63 Downloads
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.
KeywordsControlled quantum dialogue Cluster state Different initial state attack Denial-of-service attack
This work was supported by National Natural Science Foundation of China (Grant Nos. 61502101 and 61871120), and Natural Science Foundation of Jiangsu Province, China (Grant Nos. BK20140651 and BK20171458) and the Six Talent Peaks Project of Jiangsu Province (Grant No. XYDXX-003).
- 1.Bennett, C.H., Brassard, G.: Quantum cryptography: public key distribution and coin tossing. In: Proceedings of IEEE International Conference on Computers, Systems and Signal Processing, Bangalore, India, pp. 175–179 (1984)Google Scholar
- 7.Li, X.H.: Quantum secure direct communication. Acta Phys. Sin. 64(16), 0160307 (2015)Google Scholar
- 11.Liu, Z.H., Chen, H.W.: Comment on “improvement of controlled bidirectional quantum direct communication using a GHZ state” [Chin. Phys. Lett. 30 (2013) 040305]. Chin. Phys. Lett. 30(7), 079901 (2013)Google Scholar