as4pgc

Hide files inside audio files.

Use "Audio Steganography for Pretty Good Concealment" to compress, encrypt, and hide small files of any type inside compressed audio files (e.g. MP3, FLAC, OGG, OPUS) or inside uncompressed files (.WAV).

Installation

• Install system dependencies:

  sudo apt update
  sudo apt install ffmpeg sox libsox-fmt-mp3 libsox-fmt-all python3-tk python3-pyqt5

• For development (optional):

  sudo apt install python3-dev build-essential libasound2-dev ffmpeg sox libsox-fmt-mp3 libsox-fmt-all python3-tk python3-pyqt5

• Upgrade Python tooling and install the package:

  pip install --upgrade pip setuptools
  pip install as4pgc

For Windows you can download ffmpeg from here: https://www.ffmpeg.org/

WARNING: the current version was not yet tested on Windows, e.g. installation and use of sox.

How to use it?

Hide a file of any type inside an .mp3 file:

  as4pgc -w secret.zip carrier.mp3

Use option -p to activate plots and track signal processing steps.

Use option -v to output details.

  as4pgc -p -v -w secret.zip carrier.mp3

Then recover the hidden file:

  as4pgc -r stego.mp3

Use the option -h for more information:

  as4pgc -h

Configuration settings can be adapted in config.ini. For detailed documentation check the Article in Code Project. The link is provided further below.

PyPi Project

https://pypi.org/project/as4pgc/

Article in Code Project

https://www.codeproject.com/Articles/5313626/Audio-Steganography-for-Pretty-Good-Concealing-AS4

Article in GitHub

https://github.com/ClarkFieseln/AS4PGC

License

(c) 2026 Clark Fieseln

This repository is licensed under the MIT license. See LICENSE for details.