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arXiv 2003.122252020-03-27cs.ITcs.NImath.IT

Asymptotically Secure Network Code for Active Attacks and its Application to Network Quantum Key Distribution

Masahito Hayashi, Ning Cai

备注：: arXiv admin note: text overlap with arXiv:1703.00723

英文摘要：

When there exists a malicious attacker in the network, we need to be careful of eavesdropping and contamination. This problem is crucial for network communication when the network is realized by a partially trusted relay of quantum key distribution. We discuss the asymptotic rate in a linear network with the secrecy and robustness conditions when the above type of attacker exists. Also, under the same setting, we discuss the asymptotic rate in a linear network when we impose the secrecy condition alone. Then, we apply these results to the network composed of a partially trusted relay of quantum key distribution, which enables us to realize secure long-distance communication via short-distance quantum key distribution.

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