彩色QR码下密文域可逆信息隐藏方法  

Reversible information hiding method in ciphertext field under color QR code

作　　者：张丽娜[1] 刘苗 杨珺涵 岳恒怡 辛鹏 侯明会 ZHANG Lina;LIU Miao;YANG Junhan;YUE Hengyi;XIN Peng;HOU Minghui(College of Computer Science and Technology,Xi’an University of Science and Technology,Xi’an 710600,China)

机构地区：[1]西安科技大学计算机科学与技术学院,陕西西安710600

出　　处：《西安科技大学学报》2025年第2期362-371,共10页Journal of Xi’an University of Science and Technology

基　　金：西安市科技计划项目(22GXFW0063)。

摘　　要：为了克服QR(Quick Response)码在高安全需求场景下的应用限制,如信息容量不足、加密机制缺失以及安全性较低的问题,提出一种基于彩色QR码下密文域可逆的信息隐藏方法。该方法分为秘密信息预处理、多维秘密信息的嵌入和秘密信息提取3个核心模块。首先,通过将秘密信息划分为文本信息和常规图像2类,利用QR码的纠错机制以及人类视觉系统对图像特征的自然识别能力,分别进行QR码编码和二值化处理,并采用Logistic混沌系统,实现秘密信息的独立加解密;其次,通过设计多维秘密信息的嵌入策略,将公开信息、加密的文本信息和加密的图像信息共3类信息嵌入同一个彩色QR码中;最后,通过设计的颜色映射规则和秘密信息解密算法,从彩色QR码中准确地提取并解密出原始的秘密信息。结果表明:该方法不仅将QR码的信息存储量扩大至原来的3倍,还显著提高了秘密信息的安全性和鲁棒性;该方法还具有良好的抗攻击性和不可感知性,能够有效抵抗各种常见的图像攻击和统计分析攻击。研究结果满足了QR码在高安全需求领域的需求,为该领域提供了新的思路和方法。Aiming at such application limitations of QR(Quick Response)code in high-security scenarios as insufficient information capacity,lack of encryption mechanisms,and relatively low security,a reversible information hiding scheme in the ciphertext domain based on color QR code was proposed.This scheme consists of three core modules:preprocessing of secret information,embedding of multi-dimensional secret information,and extraction of secret information.Firstly,the secret information was classified into two categories,text information and regular images.While leveraging the error correction mechanism of QR code and the human visual system’s natural recognition ability for image features,QR code encoding and binarization processing were performed accordingly.A Logistic chaotic system was employed to achieve independent encryption and decryption of the secret information.Secondly,through the design of an embedding strategy for multi-dimensional secret information,three types of information including public information,encrypted text information and encrypted image information were embedded into the same color QR code.Finally,utilizing the designed color mapping rules and the secret information decryption algorithm,the original secret information was accurately extracted and decrypted from the color QR code.The results show that this scheme increases the information storage capacity of QR code by three times and significantly enhances the security and robustness of the secret information.Additionally,it exhibits excellent anti-attack and imperceptibility capabilities,effectively resisting various common image attacks and statistical analysis attacks.The research findings meet the requirements of QR code in high-security domains,providing new ideas and approaches for this field.

关 键 词：信息隐藏 彩色QR码 Logistic混沌系统 图像加密 

分 类 号：T0302[一般工业技术]