Multi-party quantum covert communication with entanglement private-keys

作者：Cao Dong^*; Song Yao Liang

来源：Journal of Applied Sciences, 2012, 30(1): 52-58.

DOI：10.3969/j.issn.0255-8297.2012.01.009

• Covert communications
• Detection scheme
• Greenberger-Horne-Zeilinger
• Private-key
• Pseudorandom sequences
• Quantum error correcting codes
• Quantum Information
• Random subsets
• Trojan horse

A novel scheme of quantum multi-party covert communication is proposed. Using a pseudo-random sequence, the random subset is selected from a set of Greenberger-Horne-Zeilinger (GHZ) shared private-key for encryption. Quantum information is rotated and hidden by disguising it as noise in a quantum error-correcting code. A subset of detection is constructed and based on the complement of shared private-keys. Based on the detection scheme of typical error, the private-key can be recycled. Compared to other protocols which require more private keys, the proposed scheme can significantly reduce key consumption. The ability of eavesdrop detection is optimized. The optimized scheme is robust to the Trojan horse attacking.

• 出版日期2012
• 单位南京理工大学