dorsal/arxiv
View SchemaFake-signal-and-cheating attack on quantum secret sharing
| Authors | Fu-Guo Deng, Xi-Han Li, Pan Chen, Chun-Yan Li, Hong-Yu Zhou |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0604060 |
| URL | https://arxiv.org/abs/quant-ph/0604060 |
Abstract
We present a fake-signal-and-cheating attack strategy for the dishonest agent in quantum secret sharing (QSS) to steal the information of the other agents' fully and freely. It is found that almost all the QSS protocols existing, such as the two famous QSS protocols, the Hillery-Bu$\check{z}$ek-Berthiaume [Phys. Rev. A \textbf{59}, 1829 (1999)] and the Karlsson-Koashi-Imoto [Phys. Rev. A \textbf{59}, 162 (1999)], can be eavesdropped freely if the process for the eavesdropping check is accomplished with the cooperation of the dishonest agent. He can sends a fake signal to the other agents after intercepting the original photons and storing them. His action can be hidden with entanglement swapping and cheating when the photons are chosen as the samples for checking eavesdropping. Finally, we present a possible improvement of these QSS protocols' security with decoy photons.
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"abstract": "We present a fake-signal-and-cheating attack strategy for the dishonest agent\nin quantum secret sharing (QSS) to steal the information of the other agents\u0027\nfully and freely. It is found that almost all the QSS protocols existing, such\nas the two famous QSS protocols, the Hillery-Bu$\\check{z}$ek-Berthiaume [Phys.\nRev. A \\textbf{59}, 1829 (1999)] and the Karlsson-Koashi-Imoto [Phys. Rev. A\n\\textbf{59}, 162 (1999)], can be eavesdropped freely if the process for the\neavesdropping check is accomplished with the cooperation of the dishonest\nagent. He can sends a fake signal to the other agents after intercepting the\noriginal photons and storing them. His action can be hidden with entanglement\nswapping and cheating when the photons are chosen as the samples for checking\neavesdropping. Finally, we present a possible improvement of these QSS\nprotocols\u0027 security with decoy photons.",
"arxiv_id": "quant-ph/0604060",
"authors": [
"Fu-Guo Deng",
"Xi-Han Li",
"Pan Chen",
"Chun-Yan Li",
"Hong-Yu Zhou"
],
"categories": [
"quant-ph"
],
"title": "Fake-signal-and-cheating attack on quantum secret sharing",
"url": "https://arxiv.org/abs/quant-ph/0604060"
},
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