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《采用纠缠私钥实现多方量子隐蔽通信》.pdf
30 1 Vol. 30 No. 1
20121 JOURNAL OF APPLIED SCIENCES — Electronics and Information Engineering Jan. 2012
DOI: 10.3969/j.issn.0255-8297.2012.01.009
1. 210094
2. 210003
.
.
.
.
TN918.7 0255-8297(2012)01-0052-07
Multi-party Quantum Covert Communication with Entanglement
Private-Keys
CAO Dong , SONG Yao-liang
1. School of Electronic Engineering and Optoelectronic Technology, Nanjing University
of Science and Technology, Nanjing 210094, China
2. College of communication and Information Engineering, Nanjing University
of Posts and Telecommunication, Nanjing 210003, China
Abstract: 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.
Keywords: information security, covert communication, quantum cryptography, entanglement private-key
.
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