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Quantum Information Processing

One-insider attack of quantum secret sharing protocol with collective eavesdropping-check

Jianhong Shi, ShengLi Zhang, Hailong Zhang, Zhenggang Chang

Published Oct 14, 2013• 1 citation
Publisher
DOI
10.1007/s11128-013-0653-2

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Security of the one-way quantum secret sharing (QSS) schemes based on entanglement and a collective eavesdropping check is analyzed in the case of considerable quantum channel losses. An opaque cheat attack scheme is presented for the dishonest agent, which reveals that these QSS schemes are completely insecure for transmission efficiencies lower than 50%. That is, the dishonest agent can eavesdrop fully and freely in almost all the one-way QSS schemes based on entanglement if the quantum channel induces 50% losses, including the two pioneer works, the Hillery-Bu\v{z}ek-Berthiaume scheme and the Karlsson-Koashi-Imoto scheme. Finally, we present two ways for possible improvement of these schemes.

•May 2, 2007•0 citations
Security of the one-way quantum secret sharing (QSS) schemes based on entanglement and a collective eavesdropping check is analyzed in the case of considerable quantum channel losses. An opaque cheat attack scheme is presented for the dishonest agent, which reveals that these QSS schemes are completely insecure for transmission efficiencies lower than 50%. That is, the dishonest agent can eavesdrop fully and freely in almost all the one-way QSS schemes based on entanglement if the quantum channel induces 50% losses, including the two pioneer works, the Hillery-Bu\v{z}ek-Berthiaume scheme and the Karlsson-Koashi-Imoto scheme. Finally, we present two ways for possible improvement of these schemes.