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arXiv quant-ph/0311006quant-ph
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连续变量量子密码是抗非高斯攻击的安全密码

Continuous-variable quantum cryptography is secure against non-gaussian attacks

Frederic Grosshans, Nicolas J. Cerf

摘要:

研究了针对连续变量量子密码体制的任意有限大小相干攻击。它表明,如果可以被窃听者相干攻击的块的大小是固定的,远小于密钥的大小,那么对于一个给定的传输线中的信噪比的最佳攻击是一个单独的高斯攻击。因此,非高斯相干攻击不需要考虑在这种量子密码系统的安全性分析。

英文摘要:

A general study of arbitrary finite-size coherent attacks against continuous-variable quantum cryptographic schemes is presented. It is shown that, if the size of the blocks that can be coherently attacked by an eavesdropper is fixed and much smaller than the key size, then the optimal attack for a given signal-to-noise ratio in the transmission line is an individual gaussian attack. Consequently, non-gaussian coherent attacks do not need to be considered in the security analysis of such quantum cryptosystems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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