Two-party quantum key agreement against collective noise
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In this paper, two two-party quantum key agreement protocols are proposed with logical \(\chi \)-states and logical Bell states. These two protocols can be immune to the collective-dephasing noise and the collective-rotation noise, respectively. They make full use of the measurement correlation property of multi-particle entangled states and the delayed measurement technique. This ensures that two participants can exchange the secret keys of each other and fairly establishes a shared key. There is no information leakage problem when establishing a shared key. The use of the delayed measurement technique and the decoy state technology makes the two protocols resist against both participant and outsider attacks. Furthermore, the two protocols are congenitally free from the Trojan horse attacks and have high qubit efficiency.
KeywordsQuantum cryptography Quantum key agreement Collective noise Logical \(\chi \)-state Logical Bell state
This work is supported by the National Natural Science Foundation of China (Grant Nos. 61373171, 61472472).
- 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, pp. 175–179. Bangalore, India (1984)Google Scholar
- 6.Hsueh, C.C., Chen, C.Y.: Quantum key agreement protocol with maximally entangled states. In: Proceedings of the 14th Information Security Conference (ISC 2004), pp. 236-242. National Taiwan University of Science and Technology, Taipei, 10–11 June 2004Google Scholar
- 10.Tsai, C.W., Hwang, T.: On “quantum key agreement protocol”. Taiwan. R.O.C, Technical Report, C-S-I-E, NCKU (2009)Google Scholar
- 11.Tsai, C.W., Chong, S.K., Hwang, T.: Comment on quantum key agreement protocol with maximally entangled states. In: Proceedings of the 20th Cryptology and Information Security Conference (CISC 2010), pp. 210–213. National Chiao Tung University, Hsinchu, 27–28 May 2010Google Scholar