Experimental Investigation of Security Issues in O-CDMA
Experimental Investigation of Security Issues in O-CDMA
复制标题
DOI：
10.1109/jlt.2006.883661
复制
发表时间：
2006-11
影响因子：
4.7
通讯作者：
Zhi Jiang;D. Leaird;A. Weiner
中科院分区：
文献类型：
--
作者：
Zhi Jiang;D. Leaird;A. Weiner
本文通过实验验证了两码键控频谱相位编码光码分多址（O-CDMA）系统中窃听者从孤立用户处提取数据的两个漏洞。其中一个漏洞源于编码过程中相位到幅度转换导致的频谱下降，这允许使用窄带可调谐光学滤波器和简单的能量检测器进行窃听。演示了一种改进的O-CDMA发射机方案，该方案掩盖了此漏洞。第二个特别严重的漏洞允许使用差相移键控接收器进行窃听。这两个漏洞都来自编码和信令方案中的结构，该结构允许窃听者使用相对简单的硬件并且不尝试学习代码即可恢复数据
In this paper, two vulnerabilities that allow an eavesdropper to extract data from an isolated user in a two-code-keying spectrally phase-coded optical-code-division-multiple-access (O-CDMA) system are experimentally demonstrated. One of these vulnerabilities stems from spectral dips that result from phase-to-amplitude conversion in the encoding process, which allows eavesdropping by using a narrowband tunable optical filter and a simple energy detector. A modified O-CDMA transmitter scheme that masks this vulnerability is demonstrated. A second, especially serious, vulnerability allows eavesdropping by using a differential-phase-shift-keying receiver. Both of these vulnerabilities arise from a structure in the coding and signaling schemes that allow an eavesdropper to recover data, with relatively simple hardware and without attempting to learn the codes