dorsal/arxiv
View SchemaQuantum Key Distribution with Classical Bob
| Authors | Michel Boyer, Dan Kenigsberg, Tal Mor |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0703107 |
| URL | https://arxiv.org/abs/quant-ph/0703107 |
| DOI | 10.1103/PhysRevLett.99.140501 |
Abstract
Secure key distribution among two remote parties is impossible when both are classical, unless some unproven (and arguably unrealistic) computation-complexity assumptions are made, such as the difficulty of factorizing large numbers. On the other hand, a secure key distribution is possible when both parties are quantum. What is possible when only one party (Alice) is quantum, yet the other (Bob) has only classical capabilities? We present a protocol with this constraint, and prove its robustness against attacks: we prove that any attempt of an adversary to obtain information (and even a tiny amount of information) necessarily induces some errors that the legitimate users could notice.
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"abstract": "Secure key distribution among two remote parties is impossible when both are\nclassical, unless some unproven (and arguably unrealistic)\ncomputation-complexity assumptions are made, such as the difficulty of\nfactorizing large numbers. On the other hand, a secure key distribution is\npossible when both parties are quantum.\n What is possible when only one party (Alice) is quantum, yet the other (Bob)\nhas only classical capabilities? We present a protocol with this constraint,\nand prove its robustness against attacks: we prove that any attempt of an\nadversary to obtain information (and even a tiny amount of information)\nnecessarily induces some errors that the legitimate users could notice.",
"arxiv_id": "quant-ph/0703107",
"authors": [
"Michel Boyer",
"Dan Kenigsberg",
"Tal Mor"
],
"categories": [
"quant-ph",
"cs.CR"
],
"doi": "10.1103/PhysRevLett.99.140501",
"title": "Quantum Key Distribution with Classical Bob",
"url": "https://arxiv.org/abs/quant-ph/0703107"
},
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