dorsal/arxiv
View SchemaImproving the security of multiparty quantum secret sharing against Trojan horse attack
| Authors | Fu-Guo Deng, Xi-Han Li, Hong-Yu Zhou, Zhan-jun Zhang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0506194 |
| URL | https://arxiv.org/abs/quant-ph/0506194 |
| DOI | 10.1103/PhysRevA.72.044302 |
| Journal | Physical Review A 72, 044302 (2005) |
Abstract
We analyzed the security of the multiparty quantum secret sharing (MQSS) protocol recently proposed by Zhang, Li and Man [Phys. Rev. A \textbf{71}, 044301 (2005)] and found that this protocol is secure for any other eavesdropper except for the agent Bob who prepares the quantum signals as he can attack the quantum communication with a Trojan horse. That is, Bob replaces the single-photon signal with a multi-photon one and the other agent Charlie cannot find this cheating as she does not measure the photons before they runs back from the boss Alice, which reveals that this MQSS protocol is not secure for Bob. Finally, we present a possible improvement of the MQSS protocol security with two single-photon measurements and six unitary operations.
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"abstract": "We analyzed the security of the multiparty quantum secret sharing (MQSS)\nprotocol recently proposed by Zhang, Li and Man [Phys. Rev. A \\textbf{71},\n044301 (2005)] and found that this protocol is secure for any other\neavesdropper except for the agent Bob who prepares the quantum signals as he\ncan attack the quantum communication with a Trojan horse. That is, Bob replaces\nthe single-photon signal with a multi-photon one and the other agent Charlie\ncannot find this cheating as she does not measure the photons before they runs\nback from the boss Alice, which reveals that this MQSS protocol is not secure\nfor Bob. Finally, we present a possible improvement of the MQSS protocol\nsecurity with two single-photon measurements and six unitary operations.",
"arxiv_id": "quant-ph/0506194",
"authors": [
"Fu-Guo Deng",
"Xi-Han Li",
"Hong-Yu Zhou",
"Zhan-jun Zhang"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.72.044302",
"journal_ref": "Physical Review A 72, 044302 (2005)",
"title": "Improving the security of multiparty quantum secret sharing against Trojan horse attack",
"url": "https://arxiv.org/abs/quant-ph/0506194"
},
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