ISBN: 978-981-09-5471-0 DOI: 10.18178/wcse.2015.04.087
Analysis on the Beam-split Eavesdropping by Eavesdropper with Storage Ability
Abstract— Focusing on QKD systems based on the weak-coherent pulse photon source and BB84
protocol, puting forward the beam- eavesdropping projects simulating eavesdropper with storage
ability--single base-2APD and single base-4APD projects, and obtaining the efficiency of generating
keys in the receiver, the efficiency of eavesdropping in the eavesdropper, eavesdropping-information
proportion and formula for beam-split proportion. Based on the practical sample with transmission
length 10km and average photon number 0.1~0.9, calculate the eavesdropping-information
proportion and get 0.35%~5.79% on account of the beam-split proportion 0.2, 0.3, 0.4 and 0.5.
Results show that current QKD systems with average photon number 0.1 are safe for the beameavesdropping.
Index Terms— QKD, beam- eavesdropping, beam-split proportion, efficiency of eavesdropping, decoy state
Yanbo Wang, Min He, Zhiyong Zhang, Yong Zhu, Zhiyong Xu
Institute of Communication Engineering, PLA University of Science and Technology, CHINA
Cite: Yanbo Wang, Min He, Zhiyong Zhang, Yong Zhu, Zhiyong Xu, "Analysis on the Beam-split Eavesdropping by Eavesdropper with Storage Ability," 2015 The 5th International Workshop on Computer Science and Engineering-Information Processing and Control Engineering (WCSE 2015-IPCE), pp. 521-526, Moscow, Russia, April 15-17, 2015.