Improved key integrity checking for high-speed quantum key distribution using combinatorial group testing with strongly selective family design
Improved key integrity checking for high-speed quantum key distribution using combinatorial group testing with strongly selective family design
复制标题
使用具有强选择性系列设计的组合组测试改进高速量子密钥分发的密钥完整性检查
DOI:
10.1007/s11128-014-0737-7
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发表时间:
2014-02
影响因子:
2.5
通讯作者:
Hui, Lucas C. K.
中科院分区:
文献类型:
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作者:
Wang, Xuan;Niu, Xiamu;Yiu, S. M.;Hui, Lucas C. K.
Key integrity checking is a necessary process in practical quantum key distribution (QKD) to check whether there is any error bit escaped from the previous error correction procedure. The traditional single-hash method may become a bottleneck in high-speed QKD since it has to discard all the key bits even if just one error bit exists. In this paper, we propose an improved scheme using combinatorial group testing (CGT) based on strong selective family design to verify key integrity in fine granularity and consequently improve the total efficiency of key generation after the error correction procedure. Code shortening technique and parallel computing are also applied to enhance the scheme’s flexibility and to accelerate the computation. Experimental results show that the scheme can identify the rare error bits precisely and thus avoid dropping the great majority of correct bits, while the overhead is reasonable. For a-bit key, the disclosed information for public comparison is 800 bits (about 0.076 % of the key bits), reducing 256 bits when compared with the previous CGT scheme. Besides, with an Intel®quad-cores CPU at 3.40 GHz and 8 GB RAM, the computational times are 3.0 and 6.3 ms for hashing and decoding, respectively, which are reasonable in real applications and will not cause significant latency in practical QKD systems.
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DOI:
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发表时间:
2008-01
期刊:
--
影响因子:
--
作者:
P. Indyk
通讯作者:
P. Indyk
DOI:
10.4018/978-1-7998-6677-0.ch001
发表时间:
2021
期刊:
Limitations and Future Applications of Quantum Cryptography
影响因子:
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作者:
S. Billewar;G. Londhe;Sunil Ghane
通讯作者:
S. Billewar;G. Londhe;Sunil Ghane
影响因子:
1.5
作者:
Christian Monyk
通讯作者:
Christian Monyk
DOI:
10.1007/s003400050574
发表时间:
1998
期刊:
Applied Physics B
影响因子:
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作者:
H. Zbinden;H. Bechmann-Pasquinucci;N. Gisin;G. Ribordy
通讯作者:
H. Zbinden;H. Bechmann-Pasquinucci;N. Gisin;G. Ribordy
DOI:
10.1007/978-1-4614-6940-7
发表时间:
--
期刊:
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影响因子:
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作者:
通讯作者:
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