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Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light
Digital signatures are frequently used in data transfer to prevent impersonation, repudiation and message tampering. Currently used classical digital signature schemes rely on public key encryption techniques, where the complexity of so-called ‘one-way' mathematical functions is used to provide...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493646/ https://www.ncbi.nlm.nih.gov/pubmed/23132024 http://dx.doi.org/10.1038/ncomms2172 |
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author | Clarke, Patrick J. Collins, Robert J. Dunjko, Vedran Andersson, Erika Jeffers, John Buller, Gerald S. |
author_facet | Clarke, Patrick J. Collins, Robert J. Dunjko, Vedran Andersson, Erika Jeffers, John Buller, Gerald S. |
author_sort | Clarke, Patrick J. |
collection | PubMed |
description | Digital signatures are frequently used in data transfer to prevent impersonation, repudiation and message tampering. Currently used classical digital signature schemes rely on public key encryption techniques, where the complexity of so-called ‘one-way' mathematical functions is used to provide security over sufficiently long timescales. No mathematical proofs are known for the long-term security of such techniques. Quantum digital signatures offer a means of sending a message, which cannot be forged or repudiated, with security verified by information-theoretical limits and quantum mechanics. Here we demonstrate an experimental system, which distributes quantum signatures from one sender to two receivers and enables message sending ensured against forging and repudiation. Additionally, we analyse the security of the system in some typical scenarios. Our system is based on the interference of phase-encoded coherent states of light and our implementation utilizes polarization-maintaining optical fibre and photons with a wavelength of 850 nm. |
format | Online Article Text |
id | pubmed-3493646 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-34936462012-11-09 Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light Clarke, Patrick J. Collins, Robert J. Dunjko, Vedran Andersson, Erika Jeffers, John Buller, Gerald S. Nat Commun Article Digital signatures are frequently used in data transfer to prevent impersonation, repudiation and message tampering. Currently used classical digital signature schemes rely on public key encryption techniques, where the complexity of so-called ‘one-way' mathematical functions is used to provide security over sufficiently long timescales. No mathematical proofs are known for the long-term security of such techniques. Quantum digital signatures offer a means of sending a message, which cannot be forged or repudiated, with security verified by information-theoretical limits and quantum mechanics. Here we demonstrate an experimental system, which distributes quantum signatures from one sender to two receivers and enables message sending ensured against forging and repudiation. Additionally, we analyse the security of the system in some typical scenarios. Our system is based on the interference of phase-encoded coherent states of light and our implementation utilizes polarization-maintaining optical fibre and photons with a wavelength of 850 nm. Nature Pub. Group 2012-11-06 /pmc/articles/PMC3493646/ /pubmed/23132024 http://dx.doi.org/10.1038/ncomms2172 Text en Copyright © 2012, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
spellingShingle | Article Clarke, Patrick J. Collins, Robert J. Dunjko, Vedran Andersson, Erika Jeffers, John Buller, Gerald S. Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light |
title | Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light |
title_full | Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light |
title_fullStr | Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light |
title_full_unstemmed | Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light |
title_short | Experimental demonstration of quantum digital signatures using phase-encoded coherent states of light |
title_sort | experimental demonstration of quantum digital signatures using phase-encoded coherent states of light |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493646/ https://www.ncbi.nlm.nih.gov/pubmed/23132024 http://dx.doi.org/10.1038/ncomms2172 |
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