A novel basis-splitting eavesdropping scheme in quantum cryptography based on the BB84 protocol

Manish Kumar, Pankaj Kumar Gupta

Nan Zhao, Changhua Zhu, Dongxiao Quan

We propose a novel strategy named basis-splitting scheme to split the intercepted quanta into several portions based on different bases, for eavesdropping in the process of quantum cryptography. Compared with intercept-resend strategy, our simulation results of the basis-splitting scheme under the non-ideal condition show a greater performance, especially with the increase of the length of shifted bits. Consequently our scheme can aid eavesdropper to gather much more useful information.

Norbert Lütkenhaus, Stephen Mark Barnett

Guihua Zeng, Xinmei Wang

An optimal eavesdropping strategy for BB84 protocol in quantum cryptography is proposed. This scheme is based on the `indirect copying'. Under this scheme, eavesdropper can exactly obtain the exchanged information between the legitimate users without being detected.

Carl F. Sabottke, Bhaskar Roy Bardhan, Chris Richardson

Guihua Zeng

A simplified eavesdropping-strategy for BB84 protocol in quantum cryptography (refer to quant-ph/9812022) is proposed. This scheme implements by the `indirect copying' technology. Under this scheme, eavesdropper can exactly obtain the exchanged information between the legitimate users without being detected.