Title :
An analysis of the eavesdropping threshold of quantum cryptography protocol
Author :
Nan, Zhao ; Chang-xing, Pei
Author_Institution :
State Key Lab. of Integrated Services Networks, Xidian Univ., Xi´´an, China
Abstract :
This paper establishes a channel model by analyzing various factors which affect the quantum state in the process of practical quantum communication, and derives, through calculation and simulation, a new formula for a safety threshold of eavesdropping discrimination by the BB84 Protocol. This formula can be used to estimate the safety communication threshold of the BB84 Protocol in non-ideal channels. The method for estimating the practical safety thresholds can decide more accurately whether or not eavesdropping exists in the process of quantum cipher key distribution, thus raising the safety and efficiency of communication process.
Keywords :
cryptographic protocols; quantum cryptography; BB84 protocol; channel model; eavesdropping threshold; quantum cipher key distribution; quantum communication; quantum cryptography protocol; Communication channels; Mean square error methods; Measurement uncertainty; Noise; Protocols; Quantum mechanics; Safety; BB84 Protocol; bit error rate; channel model; safety threshold;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
DOI :
10.1109/CECNET.2011.5768168
