Entropy | |
Finite Key Size Analysis of Two-Way Quantum Cryptography | |
Jesni Shamsul Shaari1  | |
[1] Faculty of Science, International Islamic University Malaysia (IIUM), Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Kuantan, Pahang, |
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关键词: quantum cryptography; quantum measurement theory; entropy and other measures of information; | |
DOI : 10.3390/e17052723 | |
来源: mdpi | |
【 摘 要 】
Quantum cryptographic protocols solve the longstanding problem of distributing a shared secret string to two distant users by typically making use of one-way quantum channel. However, alternative protocols exploiting two-way quantum channel have been proposed for the same goal and with potential advantages. Here, we overview a security proof for two-way quantum key distribution protocols, against the most general eavesdropping attack, that utilize an entropic uncertainty relation. Then, by resorting to the “smooth” version of involved entropies, we extend such a proof to the case of finite key size. The results will be compared to those available for one-way protocols showing some advantages.
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland
【 预 览 】
Files | Size | Format | View |
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RO202003190013242ZK.pdf | 557KB | download |