时空半导体激光器同步及其在彩色图像加密中的应用
Synchronization of spatiotemporal semiconductor lasers and its application in color image encryption
摘要：
光学混沌是一个以高维非线性为特征的研究热点，其主要原因是光反馈的延迟诱导动力学、高带宽和易于模块化实现。鉴于这些事实，这增加了足够的混乱和扩散性质的保密通信，我们探讨时空半导体激光器系统中的同步现象。该系统被用于两阶段彩色图像加密过程。该系统产生的高维混沌吸引子产生完全随机的混沌时间序列，这是理想的安全编码的消息。因此，所示的方案是一个两阶段的加密方法，它提供了足够高的混乱和扩散特性的混沌密码系统采用独特的数据集处理的混沌序列。在这种新的密码学方法中，混沌相位掩模表示为图像，使用混沌序列作为图像的元素。该方案大大改变了图像元素的位置。下一个附加的安全层进一步沿着三色平面在很大程度上改变了原始图像的统计信息。加密过程中的中间结果证明了未经授权的用户无法破译密码图像。详尽的统计测试表明，该方案是强大的抗噪声和抵抗常见的攻击，由于双重屏蔽的加密和相关的偏微分方程系统的无穷维。
英文摘要：
Optical chaos is a topic of current research characterized by high-dimensional nonlinearity which is attributed to the delay-induced dynamics, high bandwidth and easy modular implementation of optical feedback. In light of these facts, which adds enough confusion and diffusion properties for secure communications, we explore the synchronization phenomena in spatiotemporal semiconductor laser systems. The novel system is used in a two-phase colored image encryption process. The high-dimensional chaotic attractor generated by the system produces a completely randomized chaotic time series, which is ideal in the secure encoding of messages. The scheme thus illustrated is a two-phase encryption method, which provides sufficiently high confusion and diffusion properties of chaotic cryptosystem employed with unique data sets of processed chaotic sequences. In this novel method of cryptography, the chaotic phase masks are represented as images using the chaotic sequences as the elements of the image. The scheme drastically permutes the positions of the picture elements. The next additional layer of security further alters the statistical information of the original image to a great extent along the three-color planes. The intermediate results during encryption demonstrate the infeasibility for an unauthorized user to decipher the cipher image. Exhaustive statistical tests conducted validate that the scheme is robust against noise and resistant to common attacks due to the double shield of encryption and the infinite dimensionality of the relevant system of partial differential equations.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
