tuanbaros / android-steganography

A simple android module for fully transparent hiding any string within an image.

android_steganography

android_steganography is a simple module for fully transparent hiding any string within an image. This technique is known as LSB (Least Significant Bit) steganography

Require

• API 21 or higher
• Use Android X

Usage

Dependency

Add to root/build.gradle

repositories {
    jcenter()
    maven { url 'https://jitpack.io' }
  }

Include the library in your app/build.gradle

dependencies{
    compile 'com.github.tuanbaros:android-steganography:master-SNAPSHOT'
}

Initial

import tuannt.simple.steganography.Stegy;

Stegy.init("your context");

How to encode message into an image?

• Create an EncodeRequest

EncodeRequest encodeRequest = new EncodeRequest(bitmap, "your message", "your key");

• Encode and callback

Stegy.encodeStringIntoImage(MainActivity.this, encodeRequest, new StegyCallback<Bitmap>() {
    @Override
    public void onSuccess(Bitmap data) {
        // todo
    }

    @Override
    public void onError(String error) {
        // todo
    }
});

How to decode message from an image?

• Create a DecodeRequest

DecodeRequest decodeRequest = new DecodeRequest(bitmap, "your key");

• Decode and callback

Stegy.decodeStringFromImage(MainActivity.this, decodeRequest, new StegyCallback<String>() {
    @Override
    public void onSuccess(String data) {
        // todo
    }

    @Override
    public void onError(String error) {
        // todo
    }
});

References

• https://en.wikipedia.org/wiki/Steganography
• https://securitydaily.net/gioi-thieu-ky-thuat-giau-tin-trong-anh-steganography-phan-2/