Abstract. We present the development of a multi-user cross-layer security network implemented on the optical code-division multiple access (OCDMA) with newly designed hybrid 2D-modified Walsh code (MWC) along with an algorithmic approach in cryptography domain. Minimum BER value is evaluated on the order of 10 − 50 using our designed MWC, which is comparatively lower than other existing codes. The security performance of the network was analyzed using the probability detection parameter, which was found to be superior apart from few other available existing codes. The enhancement of the quality and grade of security in this network eavesdropper can intercept the designed optical code of OCDMA in the physical layer. It compels one to break the security in the data-layer to access the original code. We also calculated the probability of successful data interception as a function of time complexity. Furthermore, we presented the simulation of the hybrid system using the OptiSystem simulator.

中文翻译：

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通过实施混合二维修改沃尔什码开发安全的光码分多址系统

摘要。我们介绍了在光码分多址 (OCDMA) 上实现的多用户跨层安全网络的开发，该网络采用新设计的混合二维修改沃尔什码 (MWC) 以及密码学领域的算法方法。使用我们设计的 MWC 评估的最小 BER 值约为 10 - 50，这相对低于其他现有代码。使用概率检测参数分析了网络的安全性能，发现除了少数其他可用的现有代码外，该参数更优越。该网络窃听者的质量和安全等级的提高可以在物理层拦截OCDMA设计的光代码。它迫使人们打破数据层的安全性以访问原始代码。我们还计算了成功截获数据的概率作为时间复杂度的函数。此外，我们还介绍了使用 OptiSystem 模拟器对混合动力系统进行的模拟。