Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited Storage
Quantum cryptography allows for unconditionally secure communication against an eavesdropper endowed with unlimited computational power and perfect technologies, who is only constrained by the laws of physics. We review recent results showing that, under the assumption that the eavesdropper can stor...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2015-05-01
|
| Series: | Entropy |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1099-4300/17/5/3194 |
| _version_ | 1811183915210113024 |
|---|---|
| author | Cosmo Lupo |
| author_facet | Cosmo Lupo |
| author_sort | Cosmo Lupo |
| collection | DOAJ |
| description | Quantum cryptography allows for unconditionally secure communication against an eavesdropper endowed with unlimited computational power and perfect technologies, who is only constrained by the laws of physics. We review recent results showing that, under the assumption that the eavesdropper can store quantum information only for a limited time, it is possible to enhance the performance of quantum key distribution in both a quantitative and qualitative fashion. We consider quantum data locking as a cryptographic primitive and discuss secure communication and key distribution protocols. For the case of a lossy optical channel, this yields the theoretical possibility of generating secret key at a constant rate of 1 bit per mode at arbitrarily long communication distances. |
| first_indexed | 2024-04-11T13:04:52Z |
| format | Article |
| id | doaj.art-404df8fcf4af4dcf973f09efd6dcb66f |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-11T13:04:52Z |
| publishDate | 2015-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-404df8fcf4af4dcf973f09efd6dcb66f2022-12-22T04:22:49ZengMDPI AGEntropy1099-43002015-05-011753194320410.3390/e17053194e17053194Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited StorageCosmo Lupo0Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USAQuantum cryptography allows for unconditionally secure communication against an eavesdropper endowed with unlimited computational power and perfect technologies, who is only constrained by the laws of physics. We review recent results showing that, under the assumption that the eavesdropper can store quantum information only for a limited time, it is possible to enhance the performance of quantum key distribution in both a quantitative and qualitative fashion. We consider quantum data locking as a cryptographic primitive and discuss secure communication and key distribution protocols. For the case of a lossy optical channel, this yields the theoretical possibility of generating secret key at a constant rate of 1 bit per mode at arbitrarily long communication distances.http://www.mdpi.com/1099-4300/17/5/3194quantum cryptographyquantum data lockingquantum enigma machine |
| spellingShingle | Cosmo Lupo Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited Storage Entropy quantum cryptography quantum data locking quantum enigma machine |
| title | Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited Storage |
| title_full | Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited Storage |
| title_fullStr | Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited Storage |
| title_full_unstemmed | Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited Storage |
| title_short | Quantum Data Locking for Secure Communication against an Eavesdropper with Time-Limited Storage |
| title_sort | quantum data locking for secure communication against an eavesdropper with time limited storage |
| topic | quantum cryptography quantum data locking quantum enigma machine |
| url | http://www.mdpi.com/1099-4300/17/5/3194 |
| work_keys_str_mv | AT cosmolupo quantumdatalockingforsecurecommunicationagainstaneavesdropperwithtimelimitedstorage |