基于码分复用的音频文件大容量可逆信息隐藏算法  

High Capacity Reversible Data Hiding Algorithm for Audio Files Based on Code Division Multiplexing

作　　者：马宾 侯金程 王春鹏 李健 施云庆 MA Bin;HOU Jin-cheng;WANG Chun-peng;LI Jian;SHI Yun-qing(School of Computer Science and Technology(School of Cyber Security),Qilu University of Technology,Jinan 250300,China;Electrical and Computer Engineering,New Jersey Institute of Technology,Newark,New Jersey 07102,USA)

机构地区：[1]齐鲁工业大学计算机科学与技术学院(网络空间安全学院),济南2503002 [2]新泽西理工大学电子与计算机工程系,新泽西州纽瓦07102

出　　处：《计算机科学》2021年第9期298-305,共8页Computer Science

基　　金：国家自然科学基金(61872203,61802212)。

摘　　要：针对音频文件可逆信息隐藏算法嵌入容量小、安全性不高的问题,文中提出了一种基于码分复用(Code Division Multiplexing,CDM)的音频文件大容量可逆信息隐藏(Reversible Data Hiding,RDH)算法。所提算法采用正交扩展序列将秘密信息可逆地嵌入音频文件中,不但可以保障所嵌入信息的无损提取,而且能够完全恢复原始音频信号;同时,基于嵌入向量的正交特性,将机密信息叠加嵌入到原始载体图像中,在嵌入过程中,不同嵌入向量中的大部分元素相互抵消,使得所提算法在大容量信息嵌入的情况下可取得更高的音频保真能力。而且,接收方只有采用相同的嵌入向量才能实现嵌入信息的正确提取与原始音频信息的无损恢复,有效提升了算法的安全性能。实验结果表明,与其他音频可逆信息隐藏算法相比,基于码分复用(CDM)的音频文件可逆信息隐藏(RDH)算法在相同文件失真情况下具有更大的可逆信息嵌入容量。Aiming at the problem of small embedding capacity and low security of reversible data hiding algorithm for audio files,a reversible data hiding(RDH)algorithm for audio files based on code division multiplexing(CDM)is proposed in this paper.The orthogonal spreading sequences are employed to carry secret message.For reversible data hiding in the proposed scheme,they enable the original image can be recovered completely after the secret data having been extracted accurately.At the same time,according the orthogonal character of the embedding vector,the secret data can be overlapping embedded into the audio files and most elements of the sequence are mutually canceled in the process of the data embedding,and thus higher audio fidelity ability is obtained even at large data embedding capacity.Moreover,only the receiver who holds the same embedding vector as the sender can restore the embedded information and the original audio file losslessly,which improves the security performance of the algorithm effectively.Experimental results show that,compared with other audio reversible data hiding algorithms,the CDM based reversible data hiding(RDH)algorithm of audio file can achieve higher data embedding capacity at same audio distortion.

关 键 词：可逆信息隐藏(RDH) 音频文件 码分复用(CDM) 大容量 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]