广义双随机相位编码系统中以QR码为载体的信息加密及无损恢复

项目名称： 广义双随机相位编码系统中以QR码为载体的信息加密及无损恢复

项目编号： No.61505091

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 秦怡

作者单位： 南阳师范学院

项目金额： 20万元

中文摘要： 作为光学信息安全的重要研究课题之一，广义双随机相位编码系统存在着严重的安全问题及应用局限，其中包括：对各种密码学攻击表现脆弱，安全性低；密文为复数，必须采用干涉方法记录，而干涉装置对稳定性要求极高；在基于该系统的多图像加密方法中，解密图像受串扰噪声影响严重，而现有方法对提高其质量效果有限。.本项目拟以QR码(Quick Response Code)为信息载体，利用QR码的抗噪声和容错特性，开展以下研究：设计仅利用密文强度和加密密钥完全恢复原始明文的解密算法；发展广义双随机相位编码系统中的密文水印技术；揭示多图像加密中影响串扰噪声的因素，实现大容量信息的无损恢复。本项目的研究将有助于提高广义双随机相位编码系统的安全性，增强加密及解密过程的可操作性，提高系统的加密效率，为推动广义双随机相位编码系统的应用提供重要的理论依据。

中文关键词： 光学信息安全；广义双随机相位编码；QR码

英文摘要： The general double random phase encoding system (GDRPE), which is considered as one of the most important optical encryption schemes, suffers from security leaks and has some limits for application. First of all, it is vulnerable to some cryptography attacks. Second, its ciphertext is complex and should be recorded by an interferometric architecture, which requires high stability. In addition, the multiple-image encryption strategy based on it has low quality decrypted images due to the cross-talk problem. In order to resolve these problems, we will perform.researches by taking advantages of the QR code, which include: developing the plaintext retrieval algorithms employing only the intensity of ciphertext and the secret keys; developing the watermarking techniques and strategies for ciphertext protection; realizing multiple-image encryption and complete information retrieval. The implementation of this scheme will improve the security level of GDRPE and facilitate the encryption process. It also will raise the efficiency of encryption and therefore provide an important theoretic basis for applications of GDRPE.

英文关键词： Optical information security;General double random phase encoding;QR code