dorsal/arxiv
View SchemaInsecurity Of Imperfect Quantum Bit Seal
| Authors | H. F. Chau |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0503031 |
| URL | https://arxiv.org/abs/quant-ph/0503031 |
| DOI | 10.1016/j.physleta.2006.01.022 |
Abstract
Quantum bit seal is a way to encode a classical bit quantum mechanically so that everyone can obtain non-zero information on the value of the bit. Moreover, such an attempt should have a high chance of being detected by an authorized verifier. Surely, a reader looks for a way to get the maximum amount of information on the sealed bit and at the same time to minimize her chance of being caught. And a verifier picks a sealing scheme that maximizes his chance of detecting any measurement of the sealed bit. Here, I report a strategy that passes all measurement detection procedures at least half of the time for all quantum bit sealing schemes. This strategy also minimizes a reader's chance of being caught under a certain scheme. In this way, I extend the result of Bechmann-Pasquinucci et al. by proving that quantum seal is insecure in the case of imperfect sealed bit recovery.
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"abstract": "Quantum bit seal is a way to encode a classical bit quantum mechanically so\nthat everyone can obtain non-zero information on the value of the bit.\nMoreover, such an attempt should have a high chance of being detected by an\nauthorized verifier. Surely, a reader looks for a way to get the maximum amount\nof information on the sealed bit and at the same time to minimize her chance of\nbeing caught. And a verifier picks a sealing scheme that maximizes his chance\nof detecting any measurement of the sealed bit. Here, I report a strategy that\npasses all measurement detection procedures at least half of the time for all\nquantum bit sealing schemes. This strategy also minimizes a reader\u0027s chance of\nbeing caught under a certain scheme. In this way, I extend the result of\nBechmann-Pasquinucci et al. by proving that quantum seal is insecure in the\ncase of imperfect sealed bit recovery.",
"arxiv_id": "quant-ph/0503031",
"authors": [
"H. F. Chau"
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"categories": [
"quant-ph"
],
"doi": "10.1016/j.physleta.2006.01.022",
"title": "Insecurity Of Imperfect Quantum Bit Seal",
"url": "https://arxiv.org/abs/quant-ph/0503031"
},
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