Design And Implementation Of An Audio Steganographic System On Android

By using information hiding technology to communication secretly, it is one of themost important technology which assure transfer information safety. Considering timingand space complexity, steganography techniques applied on workstation platform can notbeen deployed on mobile devices.Focusing on these problems, the main research results including: Transferring humanvoice which has characteristic of high redundancy and high using frequency into WAVEformat audio. This kinds of format has high fidelity sound quality, good platformcompatibility. At the same time,it is one of most widely used audio format in mobiledevices; Designed energy differ steganography algorithm which is very suitable for mobileplatform, This algorithm has low time complexity and remarkable robustness; By usingenergy comparison-exchange steps to hiding information;Designed anembedding/extraction scheme by using energy differ algorithm. Accomplishing audiosteganography system on the most common used mobile platform:Android. In thedevelopment processes, using XML language to design friendly, easy to use humaninterface and Java as system language to realize each function,mainly including:usingAndroid inner class to record, saving user’s input secret information and formating them asa protocol; Secret information embeded in WAVE format file through energy differalgorithm; By invoking API, embeded file will be transmited on Wechat which is the mostwidespread use of social software; Users can choose embeded audio file to send to anyfriend in Wechat; In Wechat,receiving embeded audio file to listen, save audio file andalso can extract secret information through energy differ algorithm.The implementation of system on mobile platform Android proved that covertcommunication through audio steganography is entirely feasible, have a role in protectingthe safety of mobile platform. The prototype system has certain value and safetysignificance.