光学干涉原理和随机相位编码技术在非对称图像加密系统中的应用研究

项目名称： 光学干涉原理和随机相位编码技术在非对称图像加密系统中的应用研究

项目编号： No.61205006

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 信息四处

项目作者： 汪小刚

作者单位： 浙江农林大学

项目金额： 24万元

中文摘要： 双随机相位编码技术是光学理论在信息安全领域的重大运用，但基于该技术的对称图像加密系统存在的安全隐患不可忽视；基于光学干涉理论的图像加密方法的研究则是最近这几年光学图像安全领域出现的新热点。一方面，纯相位加密在传统的线性光学加密系统中已经表现出更为安全的特点；另一方面，图像的非对称加密技术的研究仍有待开展。将纯相位加密技术运用到非对称图像加密领域的研究工作目前在国内外还未见文献报道。进一步,项目在基于双随机相位编码技术加密系统研究的基础上,拟采用类似基于干涉原理进行图像加密的方式，运用解析的手段将图像分解成相位板及振幅板，并研究此类方法中的"轮廓显现问题"。最后，本项目的研究工作还将致力于拓展两种技术在图像加密中的联合运用。

中文关键词： 图像加密；随机相位编码；干涉；光学加密；

英文摘要： Double random phase encoding (DRPE) technique is a significant application of optical principle in the field of information security. However, some results have indicated that the symmetrical DRPE-based encryption schemes have some weakness against attacks. In recent years, much effort has been devoted to the image encoding methods that based on the optical interference principle. On the one hand, the fully phase encryption techniques are more secure than amplitude encryption in the classical DRPE-based systems, on the other hand, a secure asymmetric cryptography has yet to be developed. The study of the asymmetric fully-phase encryption, which has not been reported so far, is one of the important contents of our research project. Based on the DRPE-based encryption systems, target images can be converted into one or more phase-only masks or amplitude masks that produced analytically in the encryption process by adopting the similar process of interference-based methods. And the silhouette problem of our protocols, which has presented in the earlier interference-based encryption methods, would be studied in the project. Additionally, this project will also devote to the research on the conjunctive application of the DRPE technique and optical interference principle.

英文关键词： Image encryption；Random phase encoding；Opitcal interference；Optical encrytion；