Quantum stream cipher part III: design of keyed randomization and experiment
Quantum stream cipher part III: design of keyed randomization and experiment
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量子流密码第三部分：密钥随机化设计和实验
DOI：
10.1117/12.613080
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Masaru Fuse
中科院分区：
文献类型：
--
作者：
O. Hirota;T. Usuda;Masaru Fuse
本文提出了一种密钥随机化的设计方案，并进行了基于Yuen协议的量子流密码实验，实现了Gbps的长距离随机流密码。对于为什么Y-00比任何类型的传统流密码都更安全，给出了一个简单的解释，展示了Y-00具有密钥随机化，例如重叠选择密钥：OSK。也就是说，带有OSK的无噪声Y-00相当于传统的流密码，但噪声是不可避免的。所以人们可以很容易地看到，噪音提高了安全性。此外，我们还给出了强度调制方案的实现设计，并报道了通过20~40 km长的传输线实现1 Gbps OSK随机化量子流密码的实验演示。这可能为要求安全、高速、体积小、免维护、价格低的广泛市场应用提供了一条途径。
In this talk, we present a design of keyed randomization, and an experiment for quantum stream cipher by Yuen protocol which can realize a randomized stream cipher with Gbps for long distance. A simple explanation of why Y-00 is more secure than any type of the conventional stream cipher is given, showing Y-00 with keyed randomization, for example, overlapping selection keying:OSK. That is, the noiseless Y-00 with OSK is equivalent of the conventional stream cipher, but the noise is inevitable. So one can easily see that the security is enhanced by the noise. In addition, we give a design for the implementation of the intensity modulation scheme and report the experimental demonstration of 1 Gbps quantum stream cipher with OSK randomization through 20~40 km long transmission line. This may provide a way to go toward the broad market applications which require security, high speed, compact size, maintenance free, and low price.