一种基于Gray码规则的彩色图像量子隐写方案

为提高量子隐写的安全性和隐写容量, 设计一种基于Gray码规则的隐写方案. 该方案以彩色图像作为载体, 先将秘密信息划分为3 bit段, 再将每段秘密信息基于Gray码规则嵌入载体像素RGB通道的LSB(least significant bit)中, 完成信息嵌入过程； 提取是嵌入的逆过程, 先从载体像素RGB通道提取出3 bit秘密信息段, 再将其拼接还原为原始秘密信息. 该方案每个载体像素可容纳3 bit秘密信息, 具有较高的嵌入容量； 基于Gray码的嵌入规则, 有效提高了嵌入方案的安全性. 仿真结果表明, 该方案在嵌入容量和安全性方面均优于其他同类方案.

A Quantum Steganography Scheme Based on Gray Code Rules for Color Images

In order to  improve the security and  capacity of quantum steganography, we  designed a steganography scheme based on Gray code rules. The scheme took the  color images as carrier,  firstly,  the secret information was divided into 3 bit segments, and then each  segment of secret information was embedded into the least significant bit (LSB) of the RGB channel of carrier pixel based on Gray code rule to complete the information embedding process. Extracting is the inverse process of embedding, firstly,  3 bit secret information segments were extracted from the RGB channel of the carrier pixel, and then they were spliced and restored  to the original secret information. Each carrier  pixel of the scheme could  contain 3 bits of secret information, which had a high embedding capacity. The embedding rules based on Gray code effectively improved the security of the embedding scheme. The simulation results show that the proposed scheme is superior to  other similar  schemes in terms of embedding capacity and security.