基于格雷码映射和LSB的彩色图像量子隐写算法  

Quantum Steganography Based on Reflected Gray Code and LSB for Color Images

作　　者：肖红[1] 陈欣燕 XIAO Hong;CHEN Xinyan(School of Computer and Information Technology,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学计算机与信息技术学院,黑龙江大庆163318

出　　处：《吉林大学学报（信息科学版）》2022年第2期219-230,共12页Journal of Jilin University（Information Science Edition）

基　　金：黑龙江省自然科学基金资助项目(JJ2019LH0212)。

摘　　要：针对现有基于LSB(Least Significant Bit)的量子图像隐写方案嵌入容量较低的问题,提出了一种基于格雷码规则的彩色图像量子隐写方案。首先将秘密信息置乱,然后将其划分为6比特段,最后使用格雷码规则将前3位嵌入载体图像RGB(Red Green Blue)通道的第2 LSB中,其余3位嵌入到载体图像RGB通道的LSB中。按照嵌入规则,隐写图像的LSB与嵌入秘密比特的差异高达近50%,提高了嵌入信息的安全性;提取是嵌入的逆过程。设计了相关操作的量子线路,在经典计算机上的仿真结果表明,该方案的嵌入容量高达每像素6 bit,不仅在嵌入容量方面优于现有方案,同时也有较高的安全性,这表明采用格雷码规则实施量子隐写的研究方案是可行的。In order to solve the problem of low embedding capacity of the existing quantum image stegography schemes based on LSB(Least Significant Bit), a novel color image quantum stegography scheme based on reflected Gray code rule is proposed. The secret information is scrambled first, and then it is divided into 6-bit segments. Finally, the first 3 bits are embedded in the second LSB of the RGB channel of the cover image, and the remaining 3 bits are embedded in the LSB of the RGB channel of the cover image using reflected-Gray code rules. According to the embedding rules, the difference between the embedded secret bit and the LSB of the stego-image is almost as high as 50%, which further guarantees the security of embedded information. Extracting is the inverse process of embedding. A quantum circuit for related operations is designed. The simulation results on the classical computer show that the embedding capacity of this scheme is as high as 6 bits per pixel, which is superior to the existing scheme in terms of embedding capacity, and has higher security. Therefore, it is feasible to implement the research scheme of quantum steganography by using Gray code rule.

关 键 词：量子图像处理 量子图像隐写 格雷码 最低有效位 嵌入容量 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]