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首页> 外文会议>Quantum Communications and Quantum Imaging V; Proceedings of SPIE-The International Society for Optical Engineering; vol.6710 >Quantum Stream Cipher part V: On the optimal modulation scheme and the implementation of deliberate signal randomization
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Quantum Stream Cipher part V: On the optimal modulation scheme and the implementation of deliberate signal randomization

机译：量子流密码第五部分：关于最优调制方案和有意信号随机化的实现

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摘要

This paper considers two issues on the quantum stream cipher by Yuen-2000 (Y-00) protocol. In the fist part of this paper we investigate the optimal modulation scheme for the basic model of the quantum stream cipher by Y-00 protocol, and in the remaining part we study the deliberate signal randomization. For the problem on the optimal modulation scheme, several modulation schemes are investigated for the cipher text-only attacks and the known plaintext attack under the error probability criterion and the information criterion to find the preferable modulation scheme. As a result, it will be shown that the phase shift keying signal yields the best performance among the modulation schemes investigated in our consideration by numerical simulations. After that, the roperty of the randomization technique called the deliberate signal randomization is considered for the cipher text-only attacks and the known plaintext attack in the information criterion. From this, it will be shown by numerical simulations that the amount of leakage of information from the legitimate user to the eavesdropper is reduced by the deliberate signal randomization. At the last section we will mention about the implementation issues of the deliberate signal randomization, taking account of the numerical results.
机译：本文考虑了Yuen-2000（Y-00）协议在量子流密码上的两个问题。在本文的第一部分，我们研究了基于Y-00协议的量子流密码基本模型的最佳调制方案，在其余部分中，我们研究了故意的信号随机化。针对最优调制方案的问题，针对误码率准则和信息准则，针对仅密文攻击和已知明文攻击，研究了几种调制方案，以找到最佳的调制方案。结果，将表明在我们通过数值模拟考虑的所研究的调制方案中，相移键控信号产生了最佳性能。此后，在信息标准中，仅密码文攻击和已知的明文攻击被认为是故意信号随机化的随机技术。由此，通过数值模拟将显示，通过有意的信号随机化，减少了从合法用户到窃听者的信息泄漏量。在最后一节中，我们将考虑数值结果，讨论有意信号随机化的实现问题。

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