stego-wave

Simple tool for .wav LSB steganography.

Usage

Command Line Parameters

• --write, --read

  • Operation type. One, and only one, of those flags bust be used, either to write a steganographic object or to read from one.

• --host=<filepath>

  • The path to the .wav file used as a host, i.e., the file containing the hidden data. Must be used for reading from a file or writing to one.

• --result=<filepath>

  • The path to the file containing the result of the operation. For write operations, the stego object and, for read operations, the hidden message.

• message=<filepath>

  • Used only for write operations. The path to the file containing the message you want to hide.

Example

Writing the contents of hello.txt to stego.wav over music.wav:

stego-wave --write --host=music.wav --message=hello.txt --resut=stego.wav

And to read the message form the result:

stego-wave --read --host=stego.wav --result=hello.txt

Setup

If you don't have common-lisp installed and is using linux, follow these steps for a quick setup:

• install sbcl
• install quicklisp
• clone this repository at ~/.quicklisp/local-projects

In theory, you should be ready to go. For additional ease of use, install maid and use the maidfile.md to run development tasks.

Roadmap

Header:

• Detect and handle RIFX files. Currently only working with RIFF
• Detect bits per sample, so that files with lower bits per sample get more capacity. Currently assuming all files have 16 bits per sample.
• Detect the exact size of header, so that we can start writing the message exactly after the header is read. Currently assumig headers of 64 bytes.

General

• Generalize to work with any RIFF file. Currently assumes only .WAV files.
• Add more steganographic methods, such as frequency spread,

Bugs:

• SBCL will fail for large message sizes (error: Heap exhausted, game over.). The program should be refactored to write the message as it reads it from the file, which would be the proper Lisp way of doing this.

References

1. WAVE Audio File Format, Library of Congress

2. WAVE PCM soundfile format, soundfile++: A Soundfile Reading/Writing Library in C++

3. Hiding Data in Wave Files. International Conference in Recent Trends in Information Technology and Computer Science (ICRTITCS - 2012). By Pushpa Aigal, Pramod Vasambekar.