一种基于差分进化的鲁棒音频隐写算法

doi:10.11959/j.issn.1000-0801.2021246

Abstract

Abstract:

Audio steganography is to hide secret information into the audio carrier and has become a research hotspot in the field of information hiding.Most of the existing studies focus on minimizing distortion at the expense of steganography capacity, and it is often difficult for them to extract secret information correctly after some common signal processing attacks.Therefore, based on the spread spectrum technology, firstly, the relationship between steganography parameters (i.e., segmented scaling parameters and steganography capacity) and imperceptibility as well as robustness was analyzed.Next, a multi-objective optimization model of audio steganography was presented, in which segmented scaling parameters and steganography capacity were decision variables, imperceptibility and steganography capacity were optimization objectives, and the signal-to-noise ratio was a constraint.Then, a robust audio steganography algorithm based on differential evolution was proposed, including the corresponding encoding, fitness function, crossover and mutation operators.Finally, comparative experimental results show that the proposed steganography algorithm can achieve better robustness against common signal processing attacks on the premise of ensuring imperceptibility and anti-detection.

Key words: audio steganography, steganography parameters, differential evolution, robustness

CLC Number:

TP309.2

Zhaopin SU, Chaoyong SHEN, Guofu ZHANG, Feng YUE, Donghui HU. A robust audio steganography algorithm based on differential evolution[J]. Telecommunications Science, 2021, 37(11): 64-74.

Figures/Tables 13

References 20

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序号	攻击方式
（1）	MP3压缩（128 bit/s）
（2）	重量化（8 bit/s）
（3）	幅值修改（90%）
（4）	重采样：先以原始采样率的一半进行下采样，再以原始采样率进行上采样
（5）	加高斯白噪声
（6）	低通滤波
（7）	中值滤波
（8）	裁剪：每2 000个样本点随机选择5个位置进行裁剪

攻击	（1）	（2）	（3）	（4）	（5）	（6）	（7）	（8）
STC
BER	0.348 1	0.492 1	0.299 1	0.385 5	0.517 8	0.496 1	0.493 9	0.043 0
DWT
BER	0.488 0	0.480 0	0.136	0.177 7	0.438 2	0.465 1	0.136 5	0.157 7
DE
BER	0.016 4	0.001 5	0.004 6	0	0.040 3	0.119 1	0	0.007 3

攻击	（1）	（2）	（3）	（4）	（5）	（6）	（7）	（8）
STC
BER	0.363 4	0.508 5	0.293 4	0.411 1	0.489 3	0.504 4	0.479 0	0.042 7
DWT
BER	0.485 1	0.509 0	0.144 3	0.183 1	0.436 3	0.461 7	0.145 0	0.173 1
DE
BER	0	0.002 6	0.003 4	0	0.115 7	0.194 6	0.007 0	0.021 0

隐写方法	音频数	检测出的数目	正确率
DE	100	20	20%
STC	100	22	22%
DWT	100	18	18%

A robust audio steganography algorithm based on differential evolution

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