Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data
Security of quantum key distribution (QKD) protocols rely solely on quantum physics laws, namely, on the impossibility to distinguish between non-orthogonal quantum states with absolute certainty. Due to this, a potential eavesdropper cannot extract full information from the states stored in their q...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/25/6/956 |
| _version_ | 1797594956739641344 |
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| author | Valeria A. Pastushenko Dmitry A. Kronberg |
| author_facet | Valeria A. Pastushenko Dmitry A. Kronberg |
| author_sort | Valeria A. Pastushenko |
| collection | DOAJ |
| description | Security of quantum key distribution (QKD) protocols rely solely on quantum physics laws, namely, on the impossibility to distinguish between non-orthogonal quantum states with absolute certainty. Due to this, a potential eavesdropper cannot extract full information from the states stored in their quantum memory after an attack despite knowing all the information disclosed during classical post-processing stages of QKD. Here, we introduce the idea of encrypting classical communication related to error-correction in order to decrease the amount of information available to the eavesdropper and hence improve the performance of quantum key distribution protocols. We analyze the applicability of the method in the context of additional assumptions concerning the eavesdropper’s quantum memory coherence time and discuss the similarity of our proposition and the quantum data locking (QDL) technique. |
| first_indexed | 2024-03-11T02:30:01Z |
| format | Article |
| id | doaj.art-c0d21c851fd24c7ab53734c51d0d83e4 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T02:30:01Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-c0d21c851fd24c7ab53734c51d0d83e42023-11-18T10:18:46ZengMDPI AGEntropy1099-43002023-06-0125695610.3390/e25060956Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction DataValeria A. Pastushenko0Dmitry A. Kronberg1Terra Quantum AG, Kronhausstrasse 25, 9000 St. Gallen, SwitzerlandTerra Quantum AG, Kronhausstrasse 25, 9000 St. Gallen, SwitzerlandSecurity of quantum key distribution (QKD) protocols rely solely on quantum physics laws, namely, on the impossibility to distinguish between non-orthogonal quantum states with absolute certainty. Due to this, a potential eavesdropper cannot extract full information from the states stored in their quantum memory after an attack despite knowing all the information disclosed during classical post-processing stages of QKD. Here, we introduce the idea of encrypting classical communication related to error-correction in order to decrease the amount of information available to the eavesdropper and hence improve the performance of quantum key distribution protocols. We analyze the applicability of the method in the context of additional assumptions concerning the eavesdropper’s quantum memory coherence time and discuss the similarity of our proposition and the quantum data locking (QDL) technique.https://www.mdpi.com/1099-4300/25/6/956quantum key distributionquantum informationquantum superadditivityquantum data locking |
| spellingShingle | Valeria A. Pastushenko Dmitry A. Kronberg Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data Entropy quantum key distribution quantum information quantum superadditivity quantum data locking |
| title | Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data |
| title_full | Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data |
| title_fullStr | Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data |
| title_full_unstemmed | Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data |
| title_short | Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data |
| title_sort | improving the performance of quantum cryptography by using the encryption of the error correction data |
| topic | quantum key distribution quantum information quantum superadditivity quantum data locking |
| url | https://www.mdpi.com/1099-4300/25/6/956 |
| work_keys_str_mv | AT valeriaapastushenko improvingtheperformanceofquantumcryptographybyusingtheencryptionoftheerrorcorrectiondata AT dmitryakronberg improvingtheperformanceofquantumcryptographybyusingtheencryptionoftheerrorcorrectiondata |