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首页> 外文会议>Conference on Algorithms and Systems for Optical Information Processing Ⅴ Jul 31-Aug 2, 2001, San Diego, USA >Interferometric Generation of Random Binary Keys for Secure Optical Communication
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Interferometric Generation of Random Binary Keys for Secure Optical Communication

机译：用于安全光通信的随机二进制密钥的干涉测量生成

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摘要

We have developed an optical key distribution scheme where communicators are able to generate identical binary keys from a wideband optical phase-noise-bearing lightwave. In our scheme, a phase-noise-bearing lightwave is distributed among the communicators via optical fiber, and men converted an intensity modulation by an unequal path length interferometer and converted to a binary stream by a comparator. The use of a broadband noisewave (>100 GHz, ~0.8 nm at 1550 nm), precludes the possibility of an eavesdropper recording the signal in enough detail to analyze the noise in conjunction with the encrypted data processing. Corresponding intensity modulations are produced if both interferometers have the same pathlength inequality to within a certain tolerance. We have demonstrated identical key generation by two independent terminals receiving a distributed optical noisewave for bit positions designated with a "good" validity bit. A separate Ethernet link between the terminals was used to assess the quality of the binary key generation. The system uses three WDM optical channels to transmit the noisewave at 1550 nm, data at 1310 and a probe signal for interferometer stabilization at 1530 nm.
机译：我们已经开发出一种光学密钥分配方案，该方案使通信人员能够从宽带光学相位噪声光波中生成相同的二进制密钥。在我们的方案中，带有相位噪声的光波通过光纤在通信器之间分配，人们用不等长的干涉仪转换了强度调制，并由比较器转换成二进制流。宽带噪声波（> 100 GHz，在1550 nm处约为0.8 nm）的使用，排除了窃听者记录足够详细的信号以结合加密的数据处理来分析噪声的可能性。如果两个干涉仪具有相同的光程长度不等式且在一定的公差范围内，则会产生相应的强度调制。我们已经证明了两个独立的终端产生相同的密钥，这两个终端接收到分布式光学噪声波，用于以“良好”有效位指定的位位置。终端之间的独立以太网链路用于评估二进制密钥生成的质量。该系统使用三个WDM光通道传输1550 nm处的噪声波，1310 nm处的数据和1530 nm处的用于稳定干涉仪的探测信号。

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