Steganalysis of LSB Steganography in wav Audio
Yang Yi-xian · Jisuanji gongcheng · 2008
This paper analyses the Least Significant Bit(LSB) embedding scheme in wav audio and constructs the probability model of switch rule between wav audio’s sample values.Based on the probability model,it analyses the feasibility of using Chi-square detection,Sample Pairs Analysis(SPA) algorithm and Differential Image Histogram(DIH) algorithm to detect LSB steganography in wav audio.Experimental results show that the three algorithms can detect LSB steganography in 8-bit and 16-bit coded wav audio effectively.When the embedding ratio of this two coding manner is above 3% and 20% respectively,the correct rate of stego-audio’s judgments can reach 100%.