基于差分统计量的MP3Stego隐写分析算法  

MP3 Steganalysis based on difference statistics

作　　者：郭洪刚[1] 严迪群[1] 王让定[1] 王张琰 王琳[1] 屠林强 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《计算机工程与应用》2015年第7期88-92,共5页Computer Engineering and Applications

基　　金：国家自然科学基金(No.61170137);浙江省重点创新团队项目(No.2010R50009)

摘　　要：通过深入剖析MP3Stego隐写原理,提出了针对MP3Stego隐写检测的新方法。该方法对MP3Stego隐写操作后与隐写之前的量化步长进行对比研究,发现相邻颗粒之间量化步长会比未隐写时有更大的波动,其方差值明显的增大。利用此变化提取检测特征,经重压缩校正后通过模式分类进行隐写分析,实现了对MP3Stego的隐写检测。实验结果表明,所提出的隐写分析方法具有较好的检测准确率和检测性能。A new method is proposed through analyzing Steganographic method of MP3Stego deeply. By comparing quantization steps before and after the operation of Steganography,it is found that after the operation,the quantization steps between adjacent particles would have greater volatility and its variance increases obviously. The difference statistics of quantization steps are extracted as the detection feature. Then Support Vector Machine is applied to realize the Steganalysis. Experimental results show that the proposed Steganalytic analysis method has good detection accuracy and detection performance.

关 键 词：MP3Stego 隐写分析 量化步长 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]