Steganograph

Steganograph is a Dart library which supports hiding mesages in images using Least Significant Bit steganography.

Install 🚀

In the pubspec.yaml of your Flutter/Dart project, add the following dependency:

dependencies:
  steganograph: ^2.0.0

Import the package in your project 📥

import 'package:steganograph/steganograph.dart';

Embed messages 🔏

// this returns an image file with the resulting image unaltered
// except now it has some secret embedded message
File? stegoImageFile = await Steganograph.cloak(
    image: File('sample_image.jpg'),
    message: 'Some secret message',
    outputFilePath: 'result.png',
  );

Or

Uint8List? stegoImageBytes = await Steganograph.cloakBytes(
    imageBytes: Uint8List(...), // cover image byte array
    message: 'Some secret message',
    outputFilePath: 'result.png',
  );

Extract embedded messages 📨

String? message = await Steganograph.uncloak(File('result.png'));

// Or

String? message = await Steganograph.uncloakBytes(stegoImageBytes);

Supported image formats 🗂

Currently, you can embed messages in:

• PNG
• JPEG
• WebP
• BMP
• GIF
• ICO
• PNM
• PSD

Contributions 🫱🏾‍🫲🏼

Feel free to contribute to this project.

If you find a bug or want a feature, but don't know how to fix/implement it, please fill an issue.
If you fixed a bug or implemented a feature, please send a pull request.