| 一种以AAC压缩音频为载体的隐写方法 |
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| 引用本文： | 王昱洁,郭立,王翠平.一种以AAC压缩音频为载体的隐写方法[J].小型微型计算机系统,2011,32(7). |
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| 作者姓名： | 王昱洁 郭立 王翠平 |
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| 作者单位： | 1. 中国科学技术大学电子科学与技术系,安徽合肥,230027;合肥工业大学计算机与信息学院,安徽合肥,230009
2. 中国科学技术大学电子科学与技术系,安徽合肥,230027 |
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| 基金项目： | 国家自然科学基金项目(60772032)资助 |
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| 摘 要： | 通过对AAC编码原理的研究,提出一种基于MDCT量化系数小值区的秘密信息嵌入方法,从而实现了一种能在AAC压缩文件中隐藏大量秘密信息的隐写算法.算法先部分解码载体AAC文件,根据码表搜索出小值区,再通过码字得到一组量化系数,按规则修改每组的最后一个量化系数,然后进行部分编码得到嵌入后的AAC文件.该隐写算法可实现盲提取,且运算复杂度较低.实验结果表明,算法的嵌入容量较高,具有良好的不可感知性,并具有一定的抗隐写分析性,能够抵抗常用的LSB隐写分析方法以及Harmsen提出的基于加性噪声的隐写分析方法.
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| 关 键 词： | AAC 音频隐写 MDCT量化系数 隐写分析 |
Steganography Method for Advanced Audio Coding |
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| WANG Yu-jie,GUO Li,WANG Cui-ping.Steganography Method for Advanced Audio Coding[J].Mini-micro Systems,2011,32(7). |
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| Authors: | WANG Yu-jie GUO Li WANG Cui-ping |
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| Affiliation: | WANG Yu-jie1,2,GUO Li1,WANG Cui-ping11(Department of Electronic Science and Technology,University of Science and Technology of China,Hefei 230027,China)2(School of Computer and Information,Hefei University of Techonology,Hefei 230009,China) |
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| Abstract: | An information hiding method on little data region of quantized MDCT coefficients which can embed a great deal of secret information into AAC files is proposed based on the research of AAC coding standard.The proposed algorithm first partly decodes the cover AAC file to search for the little data region under code books,and then gets a set of quantized coefficients by a code word,and modifies the last quantized coefficient according to rules,and finally partly encodes to get the embedded AAC file.The secret... |
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| Keywords: | AAC audio steganography quantized MDCT coefficients steganalysis |
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